Merge branch 'dygraph' into dygraph_doc

631fd9fd · xiaoting · GitHub · 8520dd1e · 90b968d5 · 631fd9fd
Unverified Commit 631fd9fd authored Dec 10, 2020 by xiaoting Committed by GitHub Dec 10, 2020
20 changed files
--- a/deploy/hubserving/ocr_system/module.py
+++ b/deploy/hubserving/ocr_system/module.py
@@ -3,20 +3,16 @@ from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
-import argparse
-import ast
-import copy
-import math
 import os
+import sys
+sys.path.insert(0, ".")
 import time
-from paddle.fluid.core import AnalysisConfig, create_paddle_predictor, PaddleTensor
 from paddlehub.common.logger import logger
 from paddlehub.module.module import moduleinfo, runnable, serving
-from PIL import Image
 import cv2
 import numpy as np
-import paddle.fluid as fluid
 import paddlehub as hub
 from tools.infer.utility import base64_to_cv2
@@ -52,7 +48,7 @@ class OCRSystem(hub.Module):
                )
        cfg.ir_optim = True
        cfg.enable_mkldnn = enable_mkldnn
        self.text_sys = TextSystem(cfg)
    def read_images(self, paths=[]):
@@ -67,9 +63,7 @@ class OCRSystem(hub.Module):
            images.append(img)
        return images
-    def predict(self,
+    def predict(self, images=[], paths=[]):
-                       images=[],
-                       paths=[]):
        """
        Get the chinese texts in the predicted images.
        Args:
@@ -104,13 +98,11 @@ class OCRSystem(hub.Module):
            for dno in range(dt_num):
                text, score = rec_res[dno]
-                rec_res_final.append(
+                rec_res_final.append({
-                    {
+                    'text': text,
-                        'text': text,
+                    'confidence': float(score),
-                        'confidence': float(score),
+                    'text_region': dt_boxes[dno].astype(np.int).tolist()
-                        'text_region': dt_boxes[dno].astype(np.int).tolist()
+                })
-                    }
-                )
            all_results.append(rec_res_final)
        return all_results
@@ -123,7 +115,7 @@ class OCRSystem(hub.Module):
        results = self.predict(images_decode, **kwargs)
        return results
 if __name__ == '__main__':
    ocr = OCRSystem()
    image_path = [
@@ -131,4 +123,4 @@ if __name__ == '__main__':
        './doc/imgs/12.jpg',
    ]
    res = ocr.predict(paths=image_path)
    print(res)
\ No newline at end of file
--- a/deploy/hubserving/ocr_system/params.py
+++ b/deploy/hubserving/ocr_system/params.py
@@ -10,16 +10,17 @@ class Config(object):
 def read_params():
    cfg = Config()
    #params for text detector
    cfg.det_algorithm = "DB"
-    cfg.det_model_dir = "./inference/ch_det_mv3_db/"
+    cfg.det_model_dir = "./inference/ch_ppocr_mobile_v1.1_det_infer/"
-    cfg.det_max_side_len = 960
+    cfg.det_limit_side_len = 960
+    cfg.det_limit_type = 'max'
    #DB parmas
-    cfg.det_db_thresh =0.3
+    cfg.det_db_thresh = 0.3
-    cfg.det_db_box_thresh =0.5
+    cfg.det_db_box_thresh = 0.5
-    cfg.det_db_unclip_ratio =2.0
+    cfg.det_db_unclip_ratio = 2.0
    #EAST parmas
    cfg.det_east_score_thresh = 0.8
@@ -28,7 +29,7 @@ def read_params():
    #params for text recognizer
    cfg.rec_algorithm = "CRNN"
-    cfg.rec_model_dir = "./inference/ch_rec_mv3_crnn/"
+    cfg.rec_model_dir = "./inference/ch_ppocr_mobile_v1.1_rec_infer/"
    cfg.rec_image_shape = "3, 32, 320"
    cfg.rec_char_type = 'ch'
@@ -38,6 +39,15 @@ def read_params():
    cfg.rec_char_dict_path = "./ppocr/utils/ppocr_keys_v1.txt"
    cfg.use_space_char = True
+    #params for text classifier
+    cfg.use_angle_cls = True
+    cfg.cls_model_dir = "./inference/ch_ppocr_mobile_v1.1_cls_infer/"
+    cfg.cls_image_shape = "3, 48, 192"
+    cfg.label_list = ['0', '180']
+    cfg.cls_batch_num = 30
+    cfg.cls_thresh = 0.9
    cfg.use_zero_copy_run = False
+    cfg.use_pdserving = False
    return cfg
--- a/deploy/hubserving/readme.md
+++ b/deploy/hubserving/readme.md
+[English](readme_en.md) | 简体中文
+PaddleOCR提供2种服务部署方式：
+- 基于PaddleHub Serving的部署：代码路径为"`./deploy/hubserving`"，按照本教程使用；
+- 基于PaddleServing的部署：代码路径为"`./deploy/pdserving`"，使用方法参考[文档](../../deploy/pdserving/readme.md)。
+# 基于PaddleHub Serving的服务部署
+hubserving服务部署目录下包括检测、识别、2阶段串联三种服务包，请根据需求选择相应的服务包进行安装和启动。目录结构如下：
+```
+deploy/hubserving/
+  └─  ocr_cls     分类模块服务包
+  └─  ocr_det     检测模块服务包
+  └─  ocr_rec     识别模块服务包
+  └─  ocr_system  检测+识别串联服务包
+```
+每个服务包下包含3个文件。以2阶段串联服务包为例，目录如下：
+```
+deploy/hubserving/ocr_system/
+  └─  __init__.py    空文件，必选
+  └─  config.json    配置文件，可选，使用配置启动服务时作为参数传入
+  └─  module.py      主模块，必选，包含服务的完整逻辑
+  └─  params.py      参数文件，必选，包含模型路径、前后处理参数等参数
+```
+## 快速启动服务
+以下步骤以检测+识别2阶段串联服务为例，如果只需要检测服务或识别服务，替换相应文件路径即可。
+### 1. 准备环境
+```shell
+# 安装paddlehub  
+pip3 install paddlehub --upgrade -i https://pypi.tuna.tsinghua.edu.cn/simple
+```
+### 2. 下载推理模型
+安装服务模块前，需要准备推理模型并放到正确路径。默认使用的是v1.1版的超轻量模型，默认模型路径为：
+```
+检测模型：./inference/ch_ppocr_mobile_v1.1_det_infer/
+识别模型：./inference/ch_ppocr_mobile_v1.1_rec_infer/
+方向分类器：./inference/ch_ppocr_mobile_v1.1_cls_infer/
+```  
+**模型路径可在`params.py`中查看和修改。** 更多模型可以从PaddleOCR提供的[模型库](../../doc/doc_ch/models_list.md)下载，也可以替换成自己训练转换好的模型。
+### 3. 安装服务模块
+PaddleOCR提供3种服务模块，根据需要安装所需模块。
+* 在Linux环境下，安装示例如下：
+```shell
+# 安装检测服务模块：  
+hub install deploy/hubserving/ocr_det/
+# 或，安装分类服务模块：  
+hub install deploy/hubserving/ocr_cls/
+# 或，安装识别服务模块：  
+hub install deploy/hubserving/ocr_rec/
+# 或，安装检测+识别串联服务模块：  
+hub install deploy/hubserving/ocr_system/
+```
+* 在Windows环境下(文件夹的分隔符为`\`)，安装示例如下：
+```shell
+# 安装检测服务模块：  
+hub install deploy\hubserving\ocr_det\
+# 或，安装分类服务模块：  
+hub install deploy\hubserving\ocr_cls\
+# 或，安装识别服务模块：  
+hub install deploy\hubserving\ocr_rec\
+# 或，安装检测+识别串联服务模块：
+hub install deploy\hubserving\ocr_system\
+```
+### 4. 启动服务
+#### 方式1. 命令行命令启动（仅支持CPU）
+**启动命令：**  
+```shell
+$ hub serving start --modules [Module1==Version1, Module2==Version2, ...] \
+                    --port XXXX \
+                    --use_multiprocess \
+                    --workers \
+```  
+**参数：**  
+|参数|用途|  
+|-|-|  
+|--modules/-m|PaddleHub Serving预安装模型，以多个Module==Version键值对的形式列出<br>*`当不指定Version时，默认选择最新版本`*|  
+|--port/-p|服务端口，默认为8866|  
+|--use_multiprocess|是否启用并发方式，默认为单进程方式，推荐多核CPU机器使用此方式<br>*`Windows操作系统只支持单进程方式`*|
+|--workers|在并发方式下指定的并发任务数，默认为`2*cpu_count-1`，其中`cpu_count`为CPU核数|  
+如启动串联服务：  ```hub serving start -m ocr_system```  
+这样就完成了一个服务化API的部署，使用默认端口号8866。
+#### 方式2. 配置文件启动（支持CPU、GPU）
+**启动命令：**  
+```hub serving start -c config.json```  
+其中，`config.json`格式如下：
+```python
+{
+    "modules_info": {
+        "ocr_system": {
+            "init_args": {
+                "version": "1.0.0",
+                "use_gpu": true
+            },
+            "predict_args": {
+            }
+        }
+    },
+    "port": 8868,
+    "use_multiprocess": false,
+    "workers": 2
+}
+```
+- `init_args`中的可配参数与`module.py`中的`_initialize`函数接口一致。其中，**当`use_gpu`为`true`时，表示使用GPU启动服务**。  
+- `predict_args`中的可配参数与`module.py`中的`predict`函数接口一致。
+**注意:**  
+- 使用配置文件启动服务时，其他参数会被忽略。
+- 如果使用GPU预测(即，`use_gpu`置为`true`)，则需要在启动服务之前，设置CUDA_VISIBLE_DEVICES环境变量，如：```export CUDA_VISIBLE_DEVICES=0```，否则不用设置。
+- **`use_gpu`不可与`use_multiprocess`同时为`true`**。
+如，使用GPU 3号卡启动串联服务：  
+```shell
+export CUDA_VISIBLE_DEVICES=3
+hub serving start -c deploy/hubserving/ocr_system/config.json
+```  
+## 发送预测请求
+配置好服务端，可使用以下命令发送预测请求，获取预测结果:  
+```python tools/test_hubserving.py server_url image_path```  
+需要给脚本传递2个参数：  
+- **server_url**：服务地址，格式为  
+`http://[ip_address]:[port]/predict/[module_name]`  
+例如，如果使用配置文件启动分类，检测、识别，检测+分类+识别3阶段服务，那么发送请求的url将分别是：  
+`http://127.0.0.1:8865/predict/ocr_det`  
+`http://127.0.0.1:8866/predict/ocr_cls`  
+`http://127.0.0.1:8867/predict/ocr_rec`  
+`http://127.0.0.1:8868/predict/ocr_system`  
+- **image_path**：测试图像路径，可以是单张图片路径，也可以是图像集合目录路径  
+访问示例：  
+```python tools/test_hubserving.py http://127.0.0.1:8868/predict/ocr_system ./doc/imgs/```
+## 返回结果格式说明
+返回结果为列表（list），列表中的每一项为词典（dict），词典一共可能包含3种字段，信息如下：
+|字段名称|数据类型|意义|
+|----|----|----|
+|angle|str|文本角度|
+|text|str|文本内容|
+|confidence|float| 文本识别置信度或文本角度分类置信度|
+|text_region|list|文本位置坐标|
+不同模块返回的字段不同，如，文本识别服务模块返回结果不含`text_region`字段，具体信息如下：
+| 字段名/模块名 | ocr_det | ocr_cls | ocr_rec | ocr_system |
+|  ----  |  ----  |  ----  |  ----  |  ----  |
+|angle| | ✔ | | ✔ |
+|text| | |✔|✔|
+|confidence| |✔ |✔|✔|
+|text_region| ✔| | |✔ |
+**说明：** 如果需要增加、删除、修改返回字段，可在相应模块的`module.py`文件中进行修改，完整流程参考下一节自定义修改服务模块。
+## 自定义修改服务模块
+如果需要修改服务逻辑，你一般需要操作以下步骤（以修改`ocr_system`为例）：  
+- 1、 停止服务  
+```hub serving stop --port/-p XXXX```  
+- 2、 到相应的`module.py`和`params.py`等文件中根据实际需求修改代码。  
+例如，如果需要替换部署服务所用模型，则需要到`params.py`中修改模型路径参数`det_model_dir`和`rec_model_dir`，如果需要关闭文本方向分类器，则将参数`use_angle_cls`置为`False`，当然，同时可能还需要修改其他相关参数，请根据实际情况修改调试。 **强烈建议修改后先直接运行`module.py`调试，能正确运行预测后再启动服务测试。**
+- 3、 卸载旧服务包  
+```hub uninstall ocr_system```  
+- 4、 安装修改后的新服务包  
+```hub install deploy/hubserving/ocr_system/```  
+- 5、重新启动服务  
+```hub serving start -m ocr_system```  
--- a/deploy/hubserving/readme_en.md
+++ b/deploy/hubserving/readme_en.md
+English | [简体中文](readme.md)
+PaddleOCR provides 2 service deployment methods:
+- Based on **PaddleHub Serving**: Code path is "`./deploy/hubserving`". Please follow this tutorial.
+- Based on **PaddleServing**: Code path is "`./deploy/pdserving`". Please refer to the [tutorial](../../deploy/pdserving/readme.md) for usage.
+# Service deployment based on PaddleHub Serving  
+The hubserving service deployment directory includes three service packages: detection, recognition, and two-stage series connection. Please select the corresponding service package to install and start service according to your needs. The directory is as follows:  
+```
+deploy/hubserving/
+  └─  ocr_det     detection module service package
+  └─  ocr_cls     angle class module service package
+  └─  ocr_rec     recognition module service package
+  └─  ocr_system  two-stage series connection service package
+```
+Each service pack contains 3 files. Take the 2-stage series connection service package as an example, the directory is as follows:  
+```
+deploy/hubserving/ocr_system/
+  └─  __init__.py    Empty file, required
+  └─  config.json    Configuration file, optional, passed in as a parameter when using configuration to start the service
+  └─  module.py      Main module file, required, contains the complete logic of the service
+  └─  params.py      Parameter file, required, including parameters such as model path, pre- and post-processing parameters
+```
+## Quick start service
+The following steps take the 2-stage series service as an example. If only the detection service or recognition service is needed, replace the corresponding file path.
+### 1. Prepare the environment
+```shell
+# Install paddlehub  
+pip3 install paddlehub --upgrade -i https://pypi.tuna.tsinghua.edu.cn/simple
+```
+### 2. Download inference model
+Before installing the service module, you need to prepare the inference model and put it in the correct path. By default, the ultra lightweight model of v1.1 is used, and the default model path is:  
+```
+detection model: ./inference/ch_ppocr_mobile_v1.1_det_infer/
+recognition model: ./inference/ch_ppocr_mobile_v1.1_rec_infer/
+text direction classifier: ./inference/ch_ppocr_mobile_v1.1_cls_infer/
+```  
+**The model path can be found and modified in `params.py`.** More models provided by PaddleOCR can be obtained from the [model library](../../doc/doc_en/models_list_en.md). You can also use models trained by yourself.
+### 3. Install Service Module
+PaddleOCR provides 3 kinds of service modules, install the required modules according to your needs.
+* On Linux platform, the examples are as follows.
+```shell
+# Install the detection service module:
+hub install deploy/hubserving/ocr_det/
+# Or, install the angle class service module:
+hub install deploy/hubserving/ocr_cls/
+# Or, install the recognition service module:
+hub install deploy/hubserving/ocr_rec/
+# Or, install the 2-stage series service module:
+hub install deploy/hubserving/ocr_system/
+```
+* On Windows platform, the examples are as follows.
+```shell
+# Install the detection service module:
+hub install deploy\hubserving\ocr_det\
+# Or, install the angle class service module:
+hub install deploy\hubserving\ocr_cls\
+# Or, install the recognition service module:
+hub install deploy\hubserving\ocr_rec\
+# Or, install the 2-stage series service module:
+hub install deploy\hubserving\ocr_system\
+```
+### 4. Start service
+#### Way 1. Start with command line parameters (CPU only)
+**start command：**  
+```shell
+$ hub serving start --modules [Module1==Version1, Module2==Version2, ...] \
+                    --port XXXX \
+                    --use_multiprocess \
+                    --workers \
+```  
+**parameters：**  
+|parameters|usage|  
+|-|-|  
+|--modules/-m|PaddleHub Serving pre-installed model, listed in the form of multiple Module==Version key-value pairs<br>*`When Version is not specified, the latest version is selected by default`*|
+|--port/-p|Service port, default is 8866|  
+|--use_multiprocess|Enable concurrent mode, the default is single-process mode, this mode is recommended for multi-core CPU machines<br>*`Windows operating system only supports single-process mode`*|
+|--workers|The number of concurrent tasks specified in concurrent mode, the default is `2*cpu_count-1`, where `cpu_count` is the number of CPU cores|  
+For example, start the 2-stage series service:  
+```shell
+hub serving start -m ocr_system
+```  
+This completes the deployment of a service API, using the default port number 8866.  
+#### Way 2. Start with configuration file（CPU、GPU）
+**start command：**  
+```shell
+hub serving start --config/-c config.json
+```  
+Wherein, the format of `config.json` is as follows:
+```python
+{
+    "modules_info": {
+        "ocr_system": {
+            "init_args": {
+                "version": "1.0.0",
+                "use_gpu": true
+            },
+            "predict_args": {
+            }
+        }
+    },
+    "port": 8868,
+    "use_multiprocess": false,
+    "workers": 2
+}
+```
+- The configurable parameters in `init_args` are consistent with the `_initialize` function interface in `module.py`. Among them, **when `use_gpu` is `true`, it means that the GPU is used to start the service**.
+- The configurable parameters in `predict_args` are consistent with the `predict` function interface in `module.py`.
+**Note:**  
+- When using the configuration file to start the service, other parameters will be ignored.
+- If you use GPU prediction (that is, `use_gpu` is set to `true`), you need to set the environment variable CUDA_VISIBLE_DEVICES before starting the service, such as: ```export CUDA_VISIBLE_DEVICES=0```, otherwise you do not need to set it.
+- **`use_gpu` and `use_multiprocess` cannot be `true` at the same time.**  
+For example, use GPU card No. 3 to start the 2-stage series service:
+```shell
+export CUDA_VISIBLE_DEVICES=3
+hub serving start -c deploy/hubserving/ocr_system/config.json
+```  
+## Send prediction requests
+After the service starts, you can use the following command to send a prediction request to obtain the prediction result:  
+```shell
+python tools/test_hubserving.py server_url image_path
+```  
+Two parameters need to be passed to the script:
+- **server_url**：service address，format of which is
+`http://[ip_address]:[port]/predict/[module_name]`  
+For example, if the detection, recognition and 2-stage serial services are started with provided configuration files, the respective `server_url` would be:  
+`http://127.0.0.1:8865/predict/ocr_det`  
+`http://127.0.0.1:8866/predict/ocr_cls`  
+`http://127.0.0.1:8867/predict/ocr_rec`  
+`http://127.0.0.1:8868/predict/ocr_system`  
+- **image_path**：Test image path, can be a single image path or an image directory path
+**Eg.**
+```shell
+python tools/test_hubserving.py http://127.0.0.1:8868/predict/ocr_system ./doc/imgs/
+```
+## Returned result format
+The returned result is a list. Each item in the list is a dict. The dict may contain three fields. The information is as follows:
+|field name|data type|description|
+|----|----|----|
+|angle|str|angle|
+|text|str|text content|
+|confidence|float|text recognition confidence|
+|text_region|list|text location coordinates|
+The fields returned by different modules are different. For example, the results returned by the text recognition service module do not contain `text_region`. The details are as follows:
+| field name/module name | ocr_det | ocr_cls | ocr_rec | ocr_system |
+|  ----  |  ----  |  ----  |  ----  |  ----  |
+|angle| | ✔ | | ✔ |
+|text| | |✔|✔|
+|confidence| |✔ |✔|✔|
+|text_region| ✔| | |✔ |
+**Note：** If you need to add, delete or modify the returned fields, you can modify the file `module.py` of the corresponding module. For the complete process, refer to the user-defined modification service module in the next section.
+## User defined service module modification
+If you need to modify the service logic, the following steps are generally required (take the modification of `ocr_system` for example):
+- 1. Stop service
+```shell
+hub serving stop --port/-p XXXX
+```
+- 2. Modify the code in the corresponding files, like `module.py` and `params.py`, according to the actual needs.  
+For example, if you need to replace the model used by the deployed service, you need to modify model path parameters `det_model_dir` and `rec_model_dir` in `params.py`. If you want to turn off the text direction classifier, set the parameter `use_angle_cls` to `False`. Of course, other related parameters may need to be modified at the same time. Please modify and debug according to the actual situation. It is suggested to run `module.py` directly for debugging after modification before starting the service test.  
+- 3. Uninstall old service module
+```shell
+hub uninstall ocr_system
+```
+- 4. Install modified service module
+```shell
+hub install deploy/hubserving/ocr_system/
+```
+- 5. Restart service
+```shell
+hub serving start -m ocr_system
+```
--- a/doc/doc_ch/add_new_algorithm.md
+++ b/doc/doc_ch/add_new_algorithm.md
+# 添加新算法
+PaddleOCR将一个算法分解为以下几个部分，并对各部分进行模块化处理，方便快速组合出新的算法。
+* 数据加载和处理
+* 网络
+* 后处理
+* 损失函数
+* 指标评估
+* 优化器
+下面将分别对每个部分进行介绍，并介绍如何在该部分里添加新算法所需模块。
+## 数据加载和处理
+数据加载和处理由不同的模块(module)组成，其完成了图片的读取、数据增强和label的制作。这一部分在[ppocr/data](../../ppocr/data)下。 各个文件及文件夹作用说明如下:
+```bash
+ppocr/data/
+├── imaug             # 图片的读取、数据增强和label制作相关的文件
+│   ├── label_ops.py  # 对label进行变换的modules
+│   ├── operators.py  # 对image进行变换的modules
+│   ├──.....
+├── __init__.py
+├── lmdb_dataset.py   # 读取lmdb的数据集的dataset
+└── simple_dataset.py # 读取以`image_path\tgt`形式保存的数据集的dataset
+```
+PaddleOCR内置了大量图像操作相关模块，对于没有没有内置的模块可通过如下步骤添加:
+1. 在 [ppocr/data/imaug](../../ppocr/data/imaug) 文件夹下新建文件，如my_module.py。
+2. 在 my_module.py 文件内添加相关代码，示例代码如下:
+```python
+class MyModule:
+    def __init__(self, *args, **kwargs):
+        # your init code
+        pass
+    def __call__(self, data):
+        img = data['image']
+        label = data['label']
+        # your process code
+        data['image'] = img
+        data['label'] = label
+        return data
+```
+3. 在 [ppocr/data/imaug/\__init\__.py](../../ppocr/data/imaug/__init__.py) 文件内导入添加的模块。
+数据处理的所有处理步骤由不同的模块顺序执行而成，在config文件中按照列表的形式组合并执行。如:
+```yaml
+# angle class data process
+transforms:
+  - DecodeImage: # load image
+      img_mode: BGR
+      channel_first: False
+  - MyModule:
+      args1: args1
+      args2: args2
+  - KeepKeys:
+      keep_keys: [ 'image', 'label' ] # dataloader will return list in this order
+```
+## 网络
+网络部分完成了网络的组网操作，PaddleOCR将网络划分为四部分，这一部分在[ppocr/modeling](../../ppocr/modeling)下。 进入网络的数据将按照顺序(transforms->backbones->
+necks->heads)依次通过这四个部分。
+```bash
+├── architectures # 网络的组网代码
+├── transforms    # 网络的图像变换模块
+├── backbones     # 网络的特征提取模块
+├── necks         # 网络的特征增强模块
+└── heads         # 网络的输出模块
+```
+PaddleOCR内置了DB,EAST,SAST,CRNN和Attention等算法相关的常用模块，对于没有内置的模块可通过如下步骤添加，四个部分添加步骤一致，以backbones为例:
+1. 在 [ppocr/modeling/backbones](../../ppocr/modeling/backbones) 文件夹下新建文件，如my_backbone.py。
+2. 在 my_backbone.py 文件内添加相关代码，示例代码如下:
+```python
+import paddle
+import paddle.nn as nn
+import paddle.nn.functional as F
+class MyBackbone(nn.Layer):
+    def __init__(self, *args, **kwargs):
+        super(MyBackbone, self).__init__()
+        # your init code
+        self.conv = nn.xxxx
+    def forward(self, inputs):
+        # your necwork forward
+        y = self.conv(inputs)
+        return y
+```
+3. 在 [ppocr/modeling/backbones/\__init\__.py](../../ppocr/modeling/backbones/__init__.py)文件内导入添加的模块。
+在完成网络的四部分模块添加之后，只需要配置文件中进行配置即可使用，如:
+```yaml
+Architecture:
+  model_type: rec
+  algorithm: CRNN
+  Transform:
+    name: MyTransform
+    args1: args1
+    args2: args2
+  Backbone:
+    name: MyBackbone
+    args1: args1
+  Neck:
+    name: MyNeck
+    args1: args1
+  Head:
+    name: MyHead
+    args1: args1
+```
+## 后处理
+后处理实现解码网络输出获得文本框或者识别到的文字。这一部分在[ppocr/postprocess](../../ppocr/postprocess)下。
+PaddleOCR内置了DB,EAST,SAST,CRNN和Attention等算法相关的后处理模块，对于没有内置的组件可通过如下步骤添加:
+1. 在 [ppocr/postprocess](../../ppocr/postprocess) 文件夹下新建文件，如 my_postprocess.py。
+2. 在 my_postprocess.py 文件内添加相关代码，示例代码如下:
+```python
+import paddle
+class MyPostProcess:
+    def __init__(self, *args, **kwargs):
+        # your init code
+        pass
+    def __call__(self, preds, label=None, *args, **kwargs):
+        if isinstance(preds, paddle.Tensor):
+            preds = preds.numpy()
+        # you preds decode code
+        preds = self.decode_preds(preds)
+        if label is None:
+            return preds
+        # you label decode code
+        label = self.decode_label(label)
+        return preds, label
+    def decode_preds(self, preds):
+        # you preds decode code
+        pass
+    def decode_label(self, preds):
+        # you label decode code
+        pass
+```
+3. 在 [ppocr/postprocess/\__init\__.py](../../ppocr/postprocess/__init__.py)文件内导入添加的模块。
+在后处理模块添加之后，只需要配置文件中进行配置即可使用，如:
+```yaml
+PostProcess:
+  name: MyPostProcess
+  args1: args1
+  args2: args2
+```
+## 损失函数
+损失函数用于计算网络输出和label之间的距离。这一部分在[ppocr/losses](../../ppocr/losses)下。
+PaddleOCR内置了DB,EAST,SAST,CRNN和Attention等算法相关的损失函数模块，对于没有内置的模块可通过如下步骤添加:
+1. 在 [ppocr/losses](../../ppocr/losses) 文件夹下新建文件，如 my_loss.py。
+2. 在 my_loss.py 文件内添加相关代码，示例代码如下:
+```python
+import paddle
+from paddle import nn
+class MyLoss(nn.Layer):
+    def __init__(self, **kwargs):
+        super(MyLoss, self).__init__()
+        # you init code
+        pass
+    def __call__(self, predicts, batch):
+        label = batch[1]
+        # your loss code
+        loss = self.loss(input=predicts, label=label)
+        return {'loss': loss}
+```
+3. 在 [ppocr/losses/\__init\__.py](../../ppocr/losses/__init__.py)文件内导入添加的模块。
+在损失函数添加之后，只需要配置文件中进行配置即可使用，如:
+```yaml
+Loss:
+  name: MyLoss
+  args1: args1
+  args2: args2
+```
+## 指标评估
+指标评估用于计算网络在当前batch上的性能。这一部分在[ppocr/metrics](../../ppocr/metrics)下。 PaddleOCR内置了检测，分类和识别等算法相关的指标评估模块，对于没有内置的模块可通过如下步骤添加:
+1. 在 [ppocr/metrics](../../ppocr/metrics) 文件夹下新建文件，如my_metric.py。
+2. 在 my_metric.py 文件内添加相关代码，示例代码如下:
+```python
+class MyMetric(object):
+    def __init__(self, main_indicator='acc', **kwargs):
+        # main_indicator is used for select best model
+        self.main_indicator = main_indicator
+        self.reset()
+    def __call__(self, preds, batch, *args, **kwargs):
+        # preds is out of postprocess
+        # batch is out of dataloader
+        labels = batch[1]
+        cur_correct_num = 0
+        cur_all_num = 0
+        # you metric code
+        self.correct_num += cur_correct_num
+        self.all_num += cur_all_num
+        return {'acc': cur_correct_num / cur_all_num, }
+    def get_metric(self):
+        """
+        return metircs {
+                 'acc': 0,
+                 'norm_edit_dis': 0,
+            }
+        """
+        acc = self.correct_num / self.all_num
+        self.reset()
+        return {'acc': acc}
+    def reset(self):
+        # reset metric
+        self.correct_num = 0
+        self.all_num = 0
+```
+3. 在 [ppocr/metrics/\__init\__.py](../../ppocr/metrics/__init__.py)文件内导入添加的模块。
+在指标评估模块添加之后，只需要配置文件中进行配置即可使用，如:
+```yaml
+Metric:
+  name: MyMetric
+  main_indicator: acc
+```
+## 优化器
+优化器用于训练网络。优化器内部还包含了网络正则化和学习率衰减模块。 这一部分在[ppocr/optimizer](../../ppocr/optimizer)下。 PaddleOCR内置了`Momentum`,`Adam`
+和`RMSProp`等常用的优化器模块，`Linear`,`Cosine`,`Step`和`Piecewise`等常用的正则化模块与`L1Decay`和`L2Decay`等常用的学习率衰减模块。
+对于没有内置的模块可通过如下步骤添加，以`optimizer`为例:
+1. 在 [ppocr/optimizer/optimizer.py](../../ppocr/optimizer/optimizer.py) 文件内创建自己的优化器，示例代码如下:
+```python
+from paddle import optimizer as optim
+class MyOptim(object):
+    def __init__(self, learning_rate=0.001, *args, **kwargs):
+        self.learning_rate = learning_rate
+    def __call__(self, parameters):
+        # It is recommended to wrap the built-in optimizer of paddle
+        opt = optim.XXX(
+            learning_rate=self.learning_rate,
+            parameters=parameters)
+        return opt
+```
+在优化器模块添加之后，只需要配置文件中进行配置即可使用，如:
+```yaml
+Optimizer:
+  name: MyOptim
+  args1: args1
+  args2: args2
+  lr:
+    name: Cosine
+    learning_rate: 0.001
+  regularizer:
+    name: 'L2'
+    factor: 0
+```
\ No newline at end of file
--- a/doc/doc_ch/algorithm_overview.md
+++ b/doc/doc_ch/algorithm_overview.md
@@ -41,8 +41,8 @@ PaddleOCR基于动态图开源的文本识别算法列表：
 - [x]  CRNN([paper](https://arxiv.org/abs/1507.05717))（ppocr推荐）
 - [x]  Rosetta([paper](https://arxiv.org/abs/1910.05085))
 - [x]  STAR-Net([paper](http://www.bmva.org/bmvc/2016/papers/paper043/index.html))
- [ ]  RARE([paper](https://arxiv.org/abs/1603.03915v1))
+- [ ]  RARE([paper](https://arxiv.org/abs/1603.03915v1)) coming soon
- [ ]  SRN([paper](https://arxiv.org/abs/2003.12294))
+- [ ]  SRN([paper](https://arxiv.org/abs/2003.12294)) coming soon
 参考[DTRB](https://arxiv.org/abs/1904.01906)文字识别训练和评估流程，使用MJSynth和SynthText两个文字识别数据集训练，在IIIT, SVT, IC03, IC13, IC15, SVTP, CUTE数据集上进行评估，算法效果如下：
@@ -55,4 +55,5 @@ PaddleOCR基于动态图开源的文本识别算法列表：
 |STAR-Net|Resnet34_vd|83.93%|rec_r34_vd_tps_bilstm_ctc|[下载链接](link)|
 |STAR-Net|MobileNetV3|81.56%|rec_mv3_tps_bilstm_ctc|[下载链接](link)|
 PaddleOCR文本识别算法的训练和使用请参考文档教程中[模型训练/评估中的文本识别部分](./recognition.md)。
--- a/doc/doc_ch/config.md
+++ b/doc/doc_ch/config.md
-# 可选参数列表
+## 可选参数列表
 以下列表可以通过`--help`查看
@@ -8,65 +8,115 @@
 |          -o              |      ALL       |  设置配置文件里的参数内容  |  None  |  使用-o配置相较于-c选择的配置文件具有更高的优先级。例如：`-o Global.use_gpu=false`  |  
-## 配置文件 Global 参数介绍
+## 配置文件参数介绍
 以 `rec_chinese_lite_train_v1.1.yml ` 为例
+### Global 
 |         字段             |            用途                |      默认值       |            备注            |
 | :----------------------: |  :---------------------:   | :--------------:  |   :--------------------:   |
-|      algorithm           |    设置算法                    |  与配置文件同步   |     选择模型，支持模型请参考[简介](https://github.com/PaddlePaddle/PaddleOCR/blob/develop/README.md) |
+|      use_gpu             |    设置代码是否在gpu运行           |       true        |                \                 |
-|      use_gpu             |    设置代码运行场所            |       true        |                \                 |
+|      epoch_num           |    最大训练epoch数             |       500        |                \                 |
-|      epoch_num           |    最大训练epoch数             |       3000        |                \                 |
 |      log_smooth_window   |    滑动窗口大小            |       20          |                \                 |
 |      print_batch_step    |    设置打印log间隔         |       10          |                \                 |
 |      save_model_dir      |    设置模型保存路径        |  output/{算法名称}  |                \                 |
 |      save_epoch_step     |    设置模型保存间隔        |       3           |                \                 |
 |      eval_batch_step     |    设置模型评估间隔        | 2000 或 [1000, 2000]        | 2000 表示每2000次迭代评估一次，[1000， 2000]表示从1000次迭代开始，每2000次评估一次   |
-|train_batch_size_per_card |  设置训练时单卡batch size    |         256         |                \                 |
+|      cal_metric_during_train     |    设置是否在训练过程中评估指标，此时评估的是模型在当前batch下的指标        |       true         |                \                 |
-| test_batch_size_per_card |  设置评估时单卡batch size    |         256         |                \                 |
+|      load_static_weights     |   设置预训练模型是否是静态图模式保存(目前仅检测算法需要)        |       true         |                \                 |
-|      image_shape         |    设置输入图片尺寸        |   [3, 32, 100]    |                \                 |
+|      pretrained_model    |    设置加载预训练模型路径      |  ./pretrain_models/CRNN/best_accuracy  |  \          |
+|      checkpoints         |    加载模型参数路径            |       None        |    用于中断后加载参数继续训练 |
+|      use_visualdl  |    设置是否启用visualdl进行可视化log展示 |          False        |    [教程地址](https://www.paddlepaddle.org.cn/paddle/visualdl) |
+|      infer_img            |    设置预测图像路径或文件夹路径     |       ./infer_img | \|
+|      character_dict_path |    设置字典路径            |  ./ppocr/utils/ppocr_keys_v1.txt  |    \                 |
 |      max_text_length     |    设置文本最大长度        |       25          |                \                 |
 |      character_type      |    设置字符类型            |       ch          |    en/ch, en时将使用默认dict，ch时使用自定义dict|
-|      character_dict_path |    设置字典路径            |  ./ppocr/utils/ic15_dict.txt  |    \                 |
+|      use_space_char     |    设置是否识别空格             |        True      |          仅在 character_type=ch 时支持空格                 |
-|      loss_type           |    设置 loss 类型              |       ctc         |    支持两种loss： ctc / attention |
-|       distort            |    设置是否使用数据增强          |       false       |  设置为true时，将在训练时随机进行扰动，支持的扰动操作可阅读[img_tools.py](https://github.com/PaddlePaddle/PaddleOCR/blob/develop/ppocr/data/rec/img_tools.py)                 |
-|       use_space_char     |    设置是否识别空格             |        false      |          仅在 character_type=ch 时支持空格                 |
 |      label_list          |    设置方向分类器支持的角度       |    ['0','180']    |     仅在方向分类器中生效 |
-|      average_window      |    ModelAverage优化器中的窗口长度计算比例 |  0.15       |       目前仅应用与SRN |
+|      save_res_path          |    设置检测模型的结果保存地址       |    ./output/det_db/predicts_db.txt    |     仅在检测模型中生效 |
-|      max_average_window  |    平均值计算窗口长度的最大值   |   15625              | 推荐设置为一轮训练中mini-batchs的数目|
-|      min_average_window  |    平均值计算窗口长度的最小值  |    10000              |      \          |
-|      reader_yml          |    设置reader配置文件          |  ./configs/rec/rec_icdar15_reader.yml  |  \          |
-|      pretrain_weights    |    加载预训练模型路径      |  ./pretrain_models/CRNN/best_accuracy  |  \          |
-|      checkpoints         |    加载模型参数路径            |       None        |    用于中断后加载参数继续训练 |
-|      save_inference_dir  |    inference model 保存路径 |          None        |    用于保存inference model |
-## 配置文件 Reader 系列参数介绍
+### Optimizer ([ppocr/optimizer](../../ppocr/optimizer))
-以 `rec_chinese_reader.yml` 为例
+|         字段             |            用途            |      默认值        |            备注             |
+| :---------------------: |  :---------------------:   | :--------------:  |   :--------------------:   |
+|      name        |         优化器类名          |  Adam  |  目前支持`Momentum`,`Adam`,`RMSProp`, 见[ppocr/optimizer/optimizer.py](../../ppocr/optimizer/optimizer.py)  |
+|      beta1           |    设置一阶矩估计的指数衰减率  |       0.9         |               \             |
+|      beta2           |    设置二阶矩估计的指数衰减率  |     0.999         |               \             |
+|      **lr**                |         设置学习率decay方式       |   -    |       \  |
+|        name    |      学习率decay类名   |         Cosine       | 目前支持`Linear`,`Cosine`,`Step`,`Piecewise`, 见[ppocr/optimizer/learning_rate.py](../../ppocr/optimizer/learning_rate.py) |
+|        learning_rate      |    基础学习率        |       0.001      |  \        |
+|      **regularizer**      |  设置网络正则化方式        |       -      | \        |
+|        name      |    正则化类名      |       L2     | 目前支持`L1`,`L2`, 见[ppocr/optimizer/regularizer.py](../../ppocr/optimizer/regularizer.py)        |
+|        factor      |    学习率衰减系数       |       0.00004     |  \        |
-|         字段             |            用途                |      默认值       |            备注            |
-| :----------------------: |  :---------------------:   | :--------------:  |   :--------------------:   |
-|      reader_function     |    选择数据读取方式        |  ppocr.data.rec.dataset_traversal,SimpleReader  | 支持SimpleReader / LMDBReader 两种数据读取方式 |
-|      num_workers             |    设置数据读取线程数            |       8        |                \                 |
-|      img_set_dir          |    数据集路径             |       ./train_data        |                \                 |
-|      label_file_path      |    数据标签路径           |       ./train_data/rec_gt_train.txt| \    |
-|      infer_img            |    预测图像文件夹路径     |       ./infer_img | \|
-## 配置文件 Optimizer 系列参数介绍
+### Architecture ([ppocr/modeling](../../ppocr/modeling))
+在ppocr中，网络被划分为Transform,Backbone,Neck和Head四个阶段
+|         字段             |            用途            |      默认值        |            备注             |
+| :---------------------: |  :---------------------:   | :--------------:  |   :--------------------:   |
+|      model_type        |         网络类型          |  rec  |  目前支持`rec`,`det`,`cls`  |
+|      algorithm           |    模型名称  |       CRNN         |               支持列表见[algorithm_overview](./algorithm_overview.md)             |
+|      **Transform**           |    设置变换方式  |       -       |               目前仅rec类型的算法支持, 具体见[ppocr/modeling/transform](../../ppocr/modeling/transform)              |
+|        name    |      变换方式类名   |         TPS       | 目前支持`TPS` |
+|        num_fiducial      |    TPS控制点数        |       20      |  上下边各十个       |
+|        loc_lr      |    定位网络学习率        |       0.1      |  \      |
+|        model_name      |    定位网络大小        |       small      |  目前支持`small`,`large`       |
+|      **Backbone**      |  设置网络backbone类名        |       -      | 具体见[ppocr/modeling/backbones](../../ppocr/modeling/backbones)        |
+|        name      |    backbone类名       |       ResNet     | 目前支持`MobileNetV3`,`ResNet`        |
+|        layers      |    resnet层数       |       34     |  支持18,34,50,101,152,200       |
+|        model_name      |    MobileNetV3 网络大小       |       small     |  支持`small`,`large`       |
+|      **Neck**      |  设置网络neck        |       -      | 具体见[ppocr/modeling/necks](../../ppocr/modeling/necks)        |
+|        name      |    neck类名       |       SequenceEncoder     | 目前支持`SequenceEncoder`,`DBFPN`        |
+|        encoder_type      |    SequenceEncoder编码器类型       |       rnn     |  支持`reshape`,`fc`,`rnn`       |
+|        hidden_size      |   rnn内部单元数       |       48     |  \      |
+|        out_channels      |   DBFPN输出通道数       |       256     |  \      |
+|      **Head**      |  设置网络Head        |       -      | 具体见[ppocr/modeling/heads](../../ppocr/modeling/heads)        |
+|        name      |    head类名       |       CTCHead     | 目前支持`CTCHead`,`DBHead`,`ClsHead`        |
+|        fc_decay      |    CTCHead正则化系数       |       0.0004     |  \      |
+|        k      |   DBHead二值化系数       |       50     |  \      |
+|        class_dim      |   ClsHead输出分类数       |       2     |  \      |
-以 `rec_icdar15_train.yml` 为例
+### Loss ([ppocr/losses](../../ppocr/losses))
+|         字段             |            用途            |      默认值        |            备注             |
+| :---------------------: |  :---------------------:   | :--------------:  |   :--------------------:   |
+|      name        |         网络loss类名          |  CTCLoss  |  目前支持`CTCLoss`,`DBLoss`,`ClsLoss`  |
+|      balance_loss        |        DBLossloss中是否对正负样本数量进行均衡(使用OHEM)         |  True  |  \  |
+|      ohem_ratio        |        DBLossloss中的OHEM的负正样本比例         |  3  |  \  |
+|      main_loss_type        |        DBLossloss中shrink_map所采用的的loss        |  DiceLoss  |  支持`DiceLoss`,`BCELoss`  |
+|      alpha        |        DBLossloss中shrink_map_loss的系数       |  5  |  \  |
+|      beta        |        DBLossloss中threshold_map_loss的系数       |  10  |  \  |
+### PostProcess ([ppocr/postprocess](../../ppocr/postprocess))
+|         字段             |            用途            |      默认值        |            备注             |
+| :---------------------: |  :---------------------:   | :--------------:  |   :--------------------:   |
+|      name        |         后处理类名          |  CTCLabelDecode  |  目前支持`CTCLoss`,`AttnLabelDecode`,`DBPostProcess`,`ClsPostProcess`  |
+|      thresh        |        DBPostProcess中分割图进行二值化的阈值         |  0.3  |  \  |
+|      box_thresh        |        DBPostProcess中对输出框进行过滤的阈值，低于此阈值的框不会输出         |  0.7  |  \  |
+|      max_candidates        |        DBPostProcess中输出的最大文本框数量        |  1000  |   |
+|      unclip_ratio        |        DBPostProcess中对文本框进行放大的比例       |  2.0  |  \  |
+### Metric ([ppocr/metrics](../../ppocr/metrics))
+|         字段             |            用途            |      默认值        |            备注             |
+| :---------------------: |  :---------------------:   | :--------------:  |   :--------------------:   |
+|      name        |         指标评估方法名称          |  CTCLabelDecode  |  目前支持`DetMetric`,`RecMetric`,`ClsMetric`  |
+|      main_indicator        |        主要指标,用于选取最优模型         |  acc |  对于检测方法为hmean，识别和分类方法为acc  |
+### Dataset  ([ppocr/data](../../ppocr/data))
 |         字段             |            用途            |      默认值        |            备注             |
 | :---------------------: |  :---------------------:   | :--------------:  |   :--------------------:   |
-|         function        |         选择优化器          |  pocr.optimizer,AdamDecay  |  目前只支持Adam方式  |
+|      **dataset**        |         每次迭代返回一个样本          |  -  |  -  |
-|         base_lr         |      设置初始学习率          |       0.0005      |               \             |
+|      name        |        dataset类名         |  SimpleDataSet |  目前支持`SimpleDataSet`和`LMDBDateSet`  |
-|         beta1           |    设置一阶矩估计的指数衰减率  |       0.9         |               \             |
+|      data_dir        |        数据集图片存放路径         |  ./train_data |  \  |
-|         beta2           |    设置二阶矩估计的指数衰减率  |     0.999         |               \             |
+|      label_file_list        |        数据标签路径         |  ["./train_data/train_list.txt"] | dataset为LMDBDateSet时不需要此参数   |
-|         decay           |         是否使用decay       |    \              |               \             |
+|      ratio_list        |        数据集的比例         |  [1.0] | 若label_file_list中有两个train_list，且ratio_list为[0.4,0.6]，则从train_list1中采样40%，从train_list2中采样60%组合整个dataset   |
-|      function(decay)    |         设置decay方式       |   -    |       目前支持cosine_decay, cosine_decay_warmup与piecewise_decay  |
+|      transforms        |        对图片和标签进行变换的方法列表         |  [DecodeImage,CTCLabelEncode,RecResizeImg,KeepKeys] |   见[ppocr/data/imaug](../../ppocr/data/imaug)  |
-|      step_each_epoch    |      每个epoch包含多少次迭代, cosine_decay/cosine_decay_warmup时有效   |         20       | 计算方式：total_image_num / (batch_size_per_card * card_size) |
+|      **loader**        |        dataloader相关         |  - |   |
-|        total_epoch      |    总共迭代多少个epoch, cosine_decay/cosine_decay_warmup时有效        |       1000      | 与Global.epoch_num 一致        |
+|      shuffle        |        每个epoch是否将数据集顺序打乱         |  True | \  |
-|        warmup_minibatch      |  线性warmup的迭代次数, cosine_decay_warmup时有效        |       1000      | \        |
+|      batch_size_per_card        |        训练时单卡batch size         |  256 | \  |
-|        boundaries      |    学习率下降时的迭代次数间隔, piecewise_decay时有效       |       -      | 参数为列表形式        |
+|      drop_last        |        是否丢弃因数据集样本数不能被 batch_size 整除而产生的最后一个不完整的mini-batch        |  True | \  |
-|        decay_rate      |    学习率衰减系数, piecewise_decay时有效       |       -      |  \        |
+|      num_workers        |        用于加载数据的子进程个数，若为0即为不开启子进程，在主进程中进行数据加载        |  8 | \  |
\ No newline at end of file
--- a/doc/doc_ch/inference.md
+++ b/doc/doc_ch/inference.md
--- a/doc/doc_ch/recognition.md
+++ b/doc/doc_ch/recognition.md
@@ -142,9 +142,8 @@ word_dict.txt 每行有一个单字，将字符与数字索引映射在一起，
 <a name="支持空格"></a>
 - 添加空格类别
-如果希望支持识别"空格"类别, 请将yml文件中的 `use_space_char` 字段设置为 `true`。
+如果希望支持识别"空格"类别, 请将yml文件中的 `use_space_char` 字段设置为 `True`。
-**注意：`use_space_char` 仅在 `character_type=ch` 时生效**
 <a name="启动训练"></a>
 ### 启动训练
@@ -167,10 +166,9 @@ tar -xf rec_mv3_none_bilstm_ctc.tar && rm -rf rec_mv3_none_bilstm_ctc.tar
 *如果您安装的是cpu版本，请将配置文件中的 `use_gpu` 字段修改为false*
 ```
-# GPU训练 支持单卡，多卡训练，通过CUDA_VISIBLE_DEVICES指定卡号
+# GPU训练 支持单卡，多卡训练，通过--gpus参数指定卡号
-export CUDA_VISIBLE_DEVICES=0,1,2,3
 # 训练icdar15英文数据 并将训练日志保存为 tain_rec.log
-python3 tools/train.py -c configs/rec/rec_icdar15_train.yml 2>&1 | tee train_rec.log
+python3 -m paddle.distributed.launch --gpus '0,1,2,3'  tools/train.py -c configs/rec/rec_icdar15_train.yml
 ```
 <a name="数据增强"></a>
 - 数据增强
@@ -195,8 +193,8 @@ PaddleOCR支持训练和评估交替进行, 可以在 `configs/rec/rec_icdar15_t
 | 配置文件 |  算法名称 |   backbone |   trans   |   seq      |     pred     |
 | :--------: |  :-------:   | :-------:  |   :-------:   |   :-----:   |  :-----:   |
-| [rec_chinese_lite_train_v1.1.yml](../../configs/rec/ch_ppocr_v1.1/rec_chinese_lite_train_v1.1.yml) |  CRNN |   Mobilenet_v3 small 0.5 |  None   |  BiLSTM |  ctc  |
+| [rec_chinese_lite_train_v2.0.yml](../../configs/rec/ch_ppocr_v2.0/rec_chinese_lite_train_v2.0.yml) |  CRNN |   Mobilenet_v3 small 0.5 |  None   |  BiLSTM |  ctc  |
-| [rec_chinese_common_train_v1.1.yml](../../configs/rec/ch_ppocr_v1.1/rec_chinese_common_train_v1.1.yml) |  CRNN | ResNet34_vd |  None   |  BiLSTM |  ctc  |
+| [rec_chinese_common_train_v2.0.yml](../../configs/rec/ch_ppocr_v2.0/rec_chinese_common_train_v2.0.yml) |  CRNN | ResNet34_vd |  None   |  BiLSTM |  ctc  |
 | rec_chinese_lite_train.yml |  CRNN |   Mobilenet_v3 small 0.5 |  None   |  BiLSTM |  ctc  |
 | rec_chinese_common_train.yml |  CRNN |   ResNet34_vd |  None   |  BiLSTM |  ctc  |
 | rec_icdar15_train.yml |  CRNN |   Mobilenet_v3 large 0.5 |  None   |  BiLSTM |  ctc  |
@@ -210,39 +208,69 @@ PaddleOCR支持训练和评估交替进行, 可以在 `configs/rec/rec_icdar15_t
 | rec_r34_vd_tps_bilstm_ctc.yml | STARNet | Resnet34_vd | tps | BiLSTM | ctc |
 | rec_r50fpn_vd_none_srn.yml | SRN | Resnet50_fpn_vd | None | rnn | srn |
-训练中文数据，推荐使用[rec_chinese_lite_train_v1.1.yml](../../configs/rec/ch_ppocr_v1.1/rec_chinese_lite_train_v1.1.yml)，如您希望尝试其他算法在中文数据集上的效果，请参考下列说明修改配置文件：
+训练中文数据，推荐使用[rec_chinese_lite_train_v2.0.yml](../../configs/rec/ch_ppocr_v2.0/rec_chinese_lite_train_v2.0.yml)，如您希望尝试其他算法在中文数据集上的效果，请参考下列说明修改配置文件：
-以 `rec_mv3_none_none_ctc.yml` 为例：
+以 `rec_chinese_lite_train_v2.0.yml` 为例：
 ```
 Global:
  ...
-  # 修改 image_shape 以适应长文本
+  # 添加自定义字典，如修改字典请将路径指向新字典
-  image_shape: [3, 32, 320]
+  character_dict_path: ppocr/utils/ppocr_keys_v1.txt
-  ...
  # 修改字符类型
  character_type: ch
-  # 添加自定义字典，如修改字典请将路径指向新字典
-  character_dict_path: ./ppocr/utils/ppocr_keys_v1.txt
-  # 训练时添加数据增强
-  distort: true
-  # 识别空格
-  use_space_char: true
-  ...
-  # 修改reader类型
-  reader_yml: ./configs/rec/rec_chinese_reader.yml
  ...
+  # 识别空格
+  use_space_char: True
-...
 Optimizer:
  ...
  # 添加学习率衰减策略
-  decay:
+  lr:
-    function: cosine_decay
+    name: Cosine
-    # 每个 epoch 包含 iter 数
+    learning_rate: 0.001
-    step_each_epoch: 20
+  ...
-    # 总共训练epoch数
-    total_epoch: 1000
+...
+Train:
+  dataset:
+    # 数据集格式，支持LMDBDateSet以及SimpleDataSet
+    name: SimpleDataSet
+    # 数据集路径
+    data_dir: ./train_data/
+    # 训练集标签文件
+    label_file_list: ["./train_data/train_list.txt"]
+    transforms:
+      ...
+      - RecResizeImg:
+          # 修改 image_shape 以适应长文本
+          image_shape: [3, 32, 320]
+      ...
+  loader:
+    ...
+    # 单卡训练的batch_size
+    batch_size_per_card: 256
+    ...
+Eval:
+  dataset:
+    # 数据集格式，支持LMDBDateSet以及SimpleDataSet
+    name: SimpleDataSet
+    # 数据集路径
+    data_dir: ./train_data
+    # 验证集标签文件
+    label_file_list: ["./train_data/val_list.txt"]
+    transforms:
+      ...
+      - RecResizeImg:
+          # 修改 image_shape 以适应长文本
+          image_shape: [3, 32, 320]
+      ...
+  loader:
+    # 单卡验证的batch_size
+    batch_size_per_card: 256
+    ...
 ```
 **注意，预测/评估时的配置文件请务必与训练一致。**
@@ -270,39 +298,41 @@ Global:
  ...
  # 添加自定义字典，如修改字典请将路径指向新字典
  character_dict_path: ./ppocr/utils/dict/french_dict.txt
-  # 训练时添加数据增强
-  distort: true
-  # 识别空格
-  use_space_char: true
-  ...
-  # 修改reader类型
-  reader_yml: ./configs/rec/multi_languages/rec_french_reader.yml
-  ...
-...
-```
-同时需要修改数据读取文件 `rec_french_reader.yml`：
-```
-TrainReader:
  ...
-  # 修改训练数据存放的目录名
+  # 识别空格
-  img_set_dir: ./train_data
+  use_space_char: True
-  # 修改 label 文件名称
-  label_file_path: ./train_data/french_train.txt
 ...
+Train:
+  dataset:
+    # 数据集格式，支持LMDBDateSet以及SimpleDataSet
+    name: SimpleDataSet
+    # 数据集路径
+    data_dir: ./train_data/
+    # 训练集标签文件
+    label_file_list: ["./train_data/french_train.txt"]
+    ...
+Eval:
+  dataset:
+    # 数据集格式，支持LMDBDateSet以及SimpleDataSet
+    name: SimpleDataSet
+    # 数据集路径
+    data_dir: ./train_data
+    # 验证集标签文件
+    label_file_list: ["./train_data/french_val.txt"]
+    ...
 ```
 <a name="评估"></a>
 ### 评估
-评估数据集可以通过 `configs/rec/rec_icdar15_reader.yml`  修改EvalReader中的 `label_file_path` 设置。
+评估数据集可以通过 `configs/rec/rec_icdar15_train.yml`  修改Eval中的 `label_file_path` 设置。
 *注意* 评估时必须确保配置文件中 infer_img 字段为空
 ```
-export CUDA_VISIBLE_DEVICES=0
 # GPU 评估， Global.checkpoints 为待测权重
-python3 tools/eval.py -c configs/rec/rec_icdar15_train.yml -o Global.checkpoints={path/to/weights}/best_accuracy
+python3 -m paddle.distributed.launch --gpus '0' tools/eval.py -c configs/rec/rec_icdar15_train.yml -o Global.checkpoints={path/to/weights}/best_accuracy
 ```
 <a name="预测"></a>
@@ -332,12 +362,12 @@ infer_img: doc/imgs_words/en/word_1.png
     word : joint
 ```
-预测使用的配置文件必须与训练一致，如您通过 `python3 tools/train.py -c configs/rec/ch_ppocr_v1.1/rec_chinese_lite_train_v1.1.yml` 完成了中文模型的训练，
+预测使用的配置文件必须与训练一致，如您通过 `python3 tools/train.py -c configs/rec/ch_ppocr_v2.0/rec_chinese_lite_train_v2.0.yml` 完成了中文模型的训练，
 您可以使用如下命令进行中文模型预测。
 ```
 # 预测中文结果
-python3 tools/infer_rec.py -c configs/rec/ch_ppocr_v1.1/rec_chinese_lite_train_v1.1.yml -o Global.checkpoints={path/to/weights}/best_accuracy Global.infer_img=doc/imgs_words/ch/word_1.jpg
+python3 tools/infer_rec.py -c configs/rec/ch_ppocr_v2.0/rec_chinese_lite_train_v2.0.yml -o Global.checkpoints={path/to/weights}/best_accuracy Global.infer_img=doc/imgs_words/ch/word_1.jpg
 ```
 预测图片：

--- a/doc/doc_ch/tree.md
+++ b/doc/doc_ch/tree.md
--- a/doc/doc_ch/whl.md
+++ b/doc/doc_ch/whl.md
@@ -261,6 +261,61 @@ im_show.save('result.jpg')
 paddleocr --image_dir PaddleOCR/doc/imgs/11.jpg --det_model_dir {your_det_model_dir} --rec_model_dir {your_rec_model_dir} --rec_char_dict_path {your_rec_char_dict_path} --cls_model_dir {your_cls_model_dir} --use_angle_cls true --cls true
 ```
+### 使用网络图片或者numpy数组作为输入
+1. 网络图片
+代码使用
+```python
+from paddleocr import PaddleOCR, draw_ocr
+# Paddleocr目前支持中英文、英文、法语、德语、韩语、日语，可以通过修改lang参数进行切换
+# 参数依次为`ch`, `en`, `french`, `german`, `korean`, `japan`。
+ocr = PaddleOCR(use_angle_cls=True, lang="ch") # need to run only once to download and load model into memory
+img_path = 'http://n.sinaimg.cn/ent/transform/w630h933/20171222/o111-fypvuqf1838418.jpg'
+result = ocr.ocr(img_path, cls=True)
+for line in result:
+    print(line)
+# 显示结果
+from PIL import Image
+image = Image.open(img_path).convert('RGB')
+boxes = [line[0] for line in result]
+txts = [line[1][0] for line in result]
+scores = [line[1][1] for line in result]
+im_show = draw_ocr(image, boxes, txts, scores, font_path='/path/to/PaddleOCR/doc/simfang.ttf')
+im_show = Image.fromarray(im_show)
+im_show.save('result.jpg')
+```
+命令行模式
+```bash
+paddleocr --image_dir http://n.sinaimg.cn/ent/transform/w630h933/20171222/o111-fypvuqf1838418.jpg --use_angle_cls=true
+```
+2. numpy数组
+仅通过代码使用时支持numpy数组作为输入
+```python
+from paddleocr import PaddleOCR, draw_ocr
+# Paddleocr目前支持中英文、英文、法语、德语、韩语、日语，可以通过修改lang参数进行切换
+# 参数依次为`ch`, `en`, `french`, `german`, `korean`, `japan`。
+ocr = PaddleOCR(use_angle_cls=True, lang="ch") # need to run only once to download and load model into memory
+img_path = 'PaddleOCR/doc/imgs/11.jpg'
+img = cv2.imread(img_path)
+# img = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY), 如果你自己训练的模型支持灰度图，可以将这句话的注释取消
+result = ocr.ocr(img_path, cls=True)
+for line in result:
+    print(line)
+# 显示结果
+from PIL import Image
+image = Image.open(img_path).convert('RGB')
+boxes = [line[0] for line in result]
+txts = [line[1][0] for line in result]
+scores = [line[1][1] for line in result]
+im_show = draw_ocr(image, boxes, txts, scores, font_path='/path/to/PaddleOCR/doc/simfang.ttf')
+im_show = Image.fromarray(im_show)
+im_show.save('result.jpg')
+```
 ## 参数说明
 | 字段                    | 说明                                                                                                                                                                                                                 | 默认值                  |
@@ -285,6 +340,7 @@ paddleocr --image_dir PaddleOCR/doc/imgs/11.jpg --det_model_dir {your_det_model_
 | max_text_length         | 识别算法能识别的最大文字长度                                                                                                                                                                                         | 25                      |
 | rec_char_dict_path      | 识别模型字典路径，当rec_model_dir使用方式2传参时需要修改为自己的字典路径                                                                                                                                                | ./ppocr/utils/ppocr_keys_v1.txt                        |
 | use_space_char          | 是否识别空格                                                                                                                                                                                                         | TRUE                    |
+| drop_score          | 对输出按照分数(来自于识别模型)进行过滤，低于此分数的不返回                                                                                                                                                                                                         | 0.5                    |
 | use_angle_cls          | 是否加载分类模型                                                                                                                                                                                                         | FALSE                    |
 | cls_model_dir          | 分类模型所在文件夹。传参方式有两种，1. None: 自动下载内置模型到 `~/.paddleocr/cls`；2.自己转换好的inference模型路径，模型路径下必须包含model和params文件                                                                                 | None                    |
 | cls_image_shape          | 分类算法的输入图片尺寸                                                                           | "3, 48, 192"                    |
@@ -295,4 +351,4 @@ paddleocr --image_dir PaddleOCR/doc/imgs/11.jpg --det_model_dir {your_det_model_
 | lang                     | 模型语言类型,目前支持 中文(ch)和英文(en)                                                                                                                                                                                                  | ch                    |
 | det                     | 前向时使用启动检测                                                                                                                                                                                                   | TRUE                    |
 | rec                     | 前向时是否启动识别                                                                                                                                                                                                   | TRUE                    |
-| cls                     | 前向时是否启动分类                                                                                                                                                                                                 | FALSE                    |
+| cls                     | 前向时是否启动分类 (命令行模式下使用use_angle_cls控制前向是否启动分类)                                                                                                                                                                                                | FALSE                    |
--- a/doc/doc_en/add_new_algorithm_en.md
+++ b/doc/doc_en/add_new_algorithm_en.md
+# Add new algorithm
+PaddleOCR decomposes an algorithm into the following parts, and modularizes each part to make it more convenient to develop new algorithms.
+* Data loading and processing
+* Network
+* Post-processing
+* Loss
+* Metric
+* Optimizer
+The following will introduce each part separately, and introduce how to add the modules required for the new algorithm.
+## Data loading and processing
+Data loading and processing are composed of different modules, which complete the image reading, data augment and label production. This part is under [ppocr/data](../../ppocr/data). The explanation of each file and folder are as follows:
+```bash
+ppocr/data/
+├── imaug             # Scripts for image reading, data augment and label production
+│   ├── label_ops.py  # Modules that transform the label
+│   ├── operators.py  # Modules that transform the image
+│   ├──.....
+├── __init__.py
+├── lmdb_dataset.py   # The dataset that reads the lmdb
+└── simple_dataset.py # Read the dataset saved in the form of `image_path\tgt`
+```
+PaddleOCR has a large number of built-in image operation related modules. For modules that are not built-in, you can add them through the following steps:
+1. Create a new file under the [ppocr/data/imaug](../../ppocr/data/imaug) folder, such as my_module.py.
+2. Add code in the my_module.py file, the sample code is as follows:
+```python
+class MyModule:
+    def __init__(self, *args, **kwargs):
+        # your init code
+        pass
+    def __call__(self, data):
+        img = data['image']
+        label = data['label']
+        # your process code
+        data['image'] = img
+        data['label'] = label
+        return data
+```
+3. Import the added module in the [ppocr/data/imaug/\__init\__.py](../../ppocr/data/imaug/__init__.py) file.
+All different modules of data processing are executed by sequence, combined and executed in the form of a list in the config file. Such as:
+```yaml
+# angle class data process
+transforms:
+  - DecodeImage: # load image
+      img_mode: BGR
+      channel_first: False
+  - MyModule:
+      args1: args1
+      args2: args2
+  - KeepKeys:
+      keep_keys: [ 'image', 'label' ] # dataloader will return list in this order
+```
+## Network
+The network part completes the construction of the network, and PaddleOCR divides the network into four parts, which are under [ppocr/modeling](../../ppocr/modeling). The data entering the network will pass through these four parts in sequence(transforms->backbones->
+necks->heads).
+```bash
+├── architectures # Code for building network
+├── transforms    # Image Transformation Module
+├── backbones     # Feature extraction module
+├── necks         # Feature enhancement module
+└── heads         # Output module
+```
+PaddleOCR has built-in commonly used modules related to algorithms such as DB, EAST, SAST, CRNN and Attention. For modules that do not have built-in, you can add them through the following steps, the four parts are added in the same steps, take backbones as an example:
+1. Create a new file under the [ppocr/modeling/backbones](../../ppocr/modeling/backbones) folder, such as my_backbone.py.
+2. Add code in the my_backbone.py file, the sample code is as follows:
+```python
+import paddle
+import paddle.nn as nn
+import paddle.nn.functional as F
+class MyBackbone(nn.Layer):
+    def __init__(self, *args, **kwargs):
+        super(MyBackbone, self).__init__()
+        # your init code
+        self.conv = nn.xxxx
+    def forward(self, inputs):
+        # your necwork forward
+        y = self.conv(inputs)
+        return y
+```
+3. Import the added module in the [ppocr/modeling/backbones/\__init\__.py](../../ppocr/modeling/backbones/__init__.py) file.
+After adding the four-part modules of the network, you only need to configure them in the configuration file to use, such as:
+```yaml
+Architecture:
+  model_type: rec
+  algorithm: CRNN
+  Transform:
+    name: MyTransform
+    args1: args1
+    args2: args2
+  Backbone:
+    name: MyBackbone
+    args1: args1
+  Neck:
+    name: MyNeck
+    args1: args1
+  Head:
+    name: MyHead
+    args1: args1
+```
+## Post-processing
+Post-processing realizes decoding network output to obtain text box or recognized text. This part is under [ppocr/postprocess](../../ppocr/postprocess).
+PaddleOCR has built-in post-processing modules related to algorithms such as DB, EAST, SAST, CRNN and Attention. For components that are not built-in, they can be added through the following steps:
+1. Create a new file under the [ppocr/postprocess](../../ppocr/postprocess) folder, such as my_postprocess.py.
+2. Add code in the my_postprocess.py file, the sample code is as follows:
+```python
+import paddle
+class MyPostProcess:
+    def __init__(self, *args, **kwargs):
+        # your init code
+        pass
+    def __call__(self, preds, label=None, *args, **kwargs):
+        if isinstance(preds, paddle.Tensor):
+            preds = preds.numpy()
+        # you preds decode code
+        preds = self.decode_preds(preds)
+        if label is None:
+            return preds
+        # you label decode code
+        label = self.decode_label(label)
+        return preds, label
+    def decode_preds(self, preds):
+        # you preds decode code
+        pass
+    def decode_label(self, preds):
+        # you label decode code
+        pass
+```
+3. Import the added module in the [ppocr/postprocess/\__init\__.py](../../ppocr/postprocess/__init__.py) file.
+After the post-processing module is added, you only need to configure it in the configuration file to use, such as:
+```yaml
+PostProcess:
+  name: MyPostProcess
+  args1: args1
+  args2: args2
+```
+## Loss
+The loss function is used to calculate the distance between the network output and the label. This part is under [ppocr/losses](../../ppocr/losses).
+PaddleOCR has built-in loss function modules related to algorithms such as DB, EAST, SAST, CRNN and Attention. For modules that do not have built-in modules, you can add them through the following steps:
+1. Create a new file in the [ppocr/losses](../../ppocr/losses) folder, such as my_loss.py.
+2. Add code in the my_loss.py file, the sample code is as follows:
+```python
+import paddle
+from paddle import nn
+class MyLoss(nn.Layer):
+    def __init__(self, **kwargs):
+        super(MyLoss, self).__init__()
+        # you init code
+        pass
+    def __call__(self, predicts, batch):
+        label = batch[1]
+        # your loss code
+        loss = self.loss(input=predicts, label=label)
+        return {'loss': loss}
+```
+3. Import the added module in the [ppocr/losses/\__init\__.py](../../ppocr/losses/__init__.py) file.
+After the loss function module is added, you only need to configure it in the configuration file to use it, such as:
+```yaml
+Loss:
+  name: MyLoss
+  args1: args1
+  args2: args2
+```
+## Metric
+Metric is used to calculate the performance of the network on the current batch. This part is under [ppocr/metrics](../../ppocr/metrics). PaddleOCR has built-in evaluation modules related to algorithms such as detection, classification and recognition. For modules that do not have built-in modules, you can add them through the following steps:
+1. Create a new file under the [ppocr/metrics](../../ppocr/metrics) folder, such as my_metric.py.
+2. Add code in the my_metric.py file, the sample code is as follows:
+```python
+class MyMetric(object):
+    def __init__(self, main_indicator='acc', **kwargs):
+        # main_indicator is used for select best model
+        self.main_indicator = main_indicator
+        self.reset()
+    def __call__(self, preds, batch, *args, **kwargs):
+        # preds is out of postprocess
+        # batch is out of dataloader
+        labels = batch[1]
+        cur_correct_num = 0
+        cur_all_num = 0
+        # you metric code
+        self.correct_num += cur_correct_num
+        self.all_num += cur_all_num
+        return {'acc': cur_correct_num / cur_all_num, }
+    def get_metric(self):
+        """
+        return metircs {
+                 'acc': 0,
+                 'norm_edit_dis': 0,
+            }
+        """
+        acc = self.correct_num / self.all_num
+        self.reset()
+        return {'acc': acc}
+    def reset(self):
+        # reset metric
+        self.correct_num = 0
+        self.all_num = 0
+```
+3. Import the added module in the [ppocr/metrics/\__init\__.py](../../ppocr/metrics/__init__.py) file.
+After the metric module is added, you only need to configure it in the configuration file to use it, such as:
+```yaml
+Metric:
+  name: MyMetric
+  main_indicator: acc
+```
+## 优化器
+The optimizer is used to train the network. The optimizer also contains network regularization and learning rate decay modules. This part is under [ppocr/optimizer](../../ppocr/optimizer). PaddleOCR has built-in
+Commonly used optimizer modules such as `Momentum`, `Adam` and `RMSProp`, common regularization modules such as `Linear`, `Cosine`, `Step` and `Piecewise`, and common learning rate decay modules such as `L1Decay` and `L2Decay`.
+Modules without built-in can be added through the following steps, take `optimizer` as an example:
+1. Create your own optimizer in the [ppocr/optimizer/optimizer.py](../../ppocr/optimizer/optimizer.py) file, the sample code is as follows:
+```python
+from paddle import optimizer as optim
+class MyOptim(object):
+    def __init__(self, learning_rate=0.001, *args, **kwargs):
+        self.learning_rate = learning_rate
+    def __call__(self, parameters):
+        # It is recommended to wrap the built-in optimizer of paddle
+        opt = optim.XXX(
+            learning_rate=self.learning_rate,
+            parameters=parameters)
+        return opt
+```
+After the optimizer module is added, you only need to configure it in the configuration file to use, such as:
+```yaml
+Optimizer:
+  name: MyOptim
+  args1: args1
+  args2: args2
+  lr:
+    name: Cosine
+    learning_rate: 0.001
+  regularizer:
+    name: 'L2'
+    factor: 0
+```
\ No newline at end of file
--- a/doc/doc_en/algorithm_overview_en.md
+++ b/doc/doc_en/algorithm_overview_en.md
@@ -42,8 +42,8 @@ PaddleOCR open-source text recognition algorithms list:
 - [x]  CRNN([paper](https://arxiv.org/abs/1507.05717))
 - [x]  Rosetta([paper](https://arxiv.org/abs/1910.05085))
 - [x]  STAR-Net([paper](http://www.bmva.org/bmvc/2016/papers/paper043/index.html))
- [ ]  RARE([paper](https://arxiv.org/abs/1603.03915v1))
+- [ ]  RARE([paper](https://arxiv.org/abs/1603.03915v1)) coming soon
- [ ]  SRN([paper](https://arxiv.org/abs/2003.12294))(Baidu Self-Research)
+- [ ]  SRN([paper](https://arxiv.org/abs/2003.12294))(Baidu Self-Research) coming soon
 Refer to [DTRB](https://arxiv.org/abs/1904.01906), the training and evaluation result of these above text recognition (using MJSynth and SynthText for training, evaluate on IIIT, SVT, IC03, IC13, IC15, SVTP, CUTE) is as follow:
@@ -56,4 +56,5 @@ Refer to [DTRB](https://arxiv.org/abs/1904.01906), the training and evaluation r
 |STAR-Net|Resnet34_vd|83.93%|rec_r34_vd_tps_bilstm_ctc|[Download link](https://paddleocr.bj.bcebos.com/rec_r34_vd_tps_bilstm_ctc.tar)|
 |STAR-Net|MobileNetV3|81.56%|rec_mv3_tps_bilstm_ctc|[Download link](https://paddleocr.bj.bcebos.com/rec_mv3_tps_bilstm_ctc.tar)|
 Please refer to the document for training guide and use of PaddleOCR text recognition algorithms [Text recognition model training/evaluation/prediction](./doc/doc_en/recognition_en.md)
--- a/doc/doc_en/config_en.md
+++ b/doc/doc_en/config_en.md
-# OPTIONAL PARAMETERS LIST
+## Optional parameter list
-The following list can be viewed via `--help`
+The following list can be viewed through `--help`
 |         FLAG             |     Supported script    |        Use        |      Defaults       |         Note         |
 | :----------------------: | :------------: | :---------------: | :--------------: | :-----------------: |
-|          -c              |      ALL       |  Specify configuration file to use |  None  |  **Please refer to the parameter introduction for configuration file usage** |
+|          -c              |      ALL       |  Specify configuration file to use  |  None  |  **Please refer to the parameter introduction for configuration file usage** |
-|          -o              |      ALL       |  set configuration options  |  None  |  Configuration using -o has higher priority than the configuration file selected with -c. E.g: `-o Global.use_gpu=false`  |  
+|          -o              |      ALL       |  set configuration options  |  None  |  Configuration using -o has higher priority than the configuration file selected with -c. E.g: -o Global.use_gpu=false |
 ## INTRODUCTION TO GLOBAL PARAMETERS OF CONFIGURATION FILE
-Take `rec_chinese_lite_train_v1.1.yml` as an example
+Take rec_chinese_lite_train_v1.1.yml as an example
+### Global 
-|         Parameter             |            Use                |      Default       |            Note            |
+|         Parameter             |            Use                |      Defaults       |            Note            |
 | :----------------------: |  :---------------------:   | :--------------:  |   :--------------------:   |
-|      algorithm           |    Select algorithm to use                    |  Synchronize with configuration file   |     For selecting model, please refer to the supported model [list](https://github.com/PaddlePaddle/PaddleOCR/blob/develop/README_en.md) |
+|      use_gpu             |    Set using GPU or not           |       true        |                \                 |
-|      use_gpu             |    Set using GPU or not            |       true        |                \                 |
+|      epoch_num           |    Maximum training epoch number             |       500        |                \                 |
-|      epoch_num           |    Maximum training epoch number             |       3000        |                \                 |
 |      log_smooth_window   |    Sliding window size            |       20          |                \                 |
 |      print_batch_step    |    Set print log interval         |       10          |                \                 |
-|      save_model_dir      |    Set model save path        |  output/{model_name}  |                \                 |
+|      save_model_dir      |    Set model save path        |  output/{算法名称}  |                \                 |
 |      save_epoch_step     |    Set model save interval        |       3           |                \                 |
-|      eval_batch_step     |    Set the model evaluation interval        |2000 or [1000, 2000] |runing evaluation every 2000 iters or evaluation is run every 2000 iterations after the 1000th iteration  |
+|      eval_batch_step     |    Set the model evaluation interval        | 2000 or [1000, 2000]        | runing evaluation every 2000 iters or evaluation is run every 2000 iterations after the 1000th iteration   |
-|train_batch_size_per_card |  Set the batch size during training   |         256         |                \                 |
+|      cal_metric_during_train     |    Set whether to evaluate the metric during the training process. At this time, the metric of the model under the current batch is evaluated        |       true         |                \                 |
-| test_batch_size_per_card |  Set the batch size during testing    |         256         |                \                 |
+|      load_static_weights     |   Set whether the pre-training model is saved in static graph mode (currently only required by the detection algorithm)        |       true         |                \                 |
-|      image_shape         |    Set input image size        |   [3, 32, 100]    |                \                 |
+|      pretrained_model    |    Set the path of the pre-trained model      |  ./pretrain_models/CRNN/best_accuracy  |  \          |
-|      max_text_length     |    Set the maximum text length        |       25          |                \                 |
+|      checkpoints         |    set model parameter path            |       None        |   Used to load parameters after interruption to continue training|
-|      character_type      |    Set character type            |       ch          |    en/ch, the default dict will be used for en, and the custom dict will be used for ch|
+|      use_visualdl  |    Set whether to enable visualdl for visual log display |          False        |    [Tutorial](https://www.paddlepaddle.org.cn/paddle/visualdl) |
-|      character_dict_path |    Set dictionary path            |  ./ppocr/utils/ic15_dict.txt  |    \                 |
+|      infer_img            |    Set inference image path or folder path     |       ./infer_img | \|
-|      loss_type           |    Set loss type              |       ctc         |    Supports two types of loss: ctc / attention |
+|      character_dict_path |    Set dictionary path            |  ./ppocr/utils/ppocr_keys_v1.txt  |    \                 |
-|       distort            |    Set use distort          |       false       |  Support distort type ,read [img_tools.py](https://github.com/PaddlePaddle/PaddleOCR/blob/develop/ppocr/data/rec/img_tools.py)                 |
+|      max_text_length     |    Set the maximum length of text        |       25          |                \                 |
-|      use_space_char          |    Wether to recognize space             |        false      |         Only support in character_type=ch mode                 |
+|      character_type      |    Set character type            |       ch          |    en/ch, the default dict will be used for en, and the custom dict will be used for ch |
-     label_list          | Set the angle supported by the direction classifier | ['0','180'] | Only valid in the direction classifier |
+|      use_space_char     |    Set whether to recognize spaces             |        True      |          Only support in character_type=ch mode                 |
-|      reader_yml          |    Set the reader configuration file          |  ./configs/rec/rec_icdar15_reader.yml  |  \          |
+|      label_list          |    Set the angle supported by the direction classifier       |    ['0','180']    |     Only valid in angle classifier model |
-|      pretrain_weights    |    Load pre-trained model path      |  ./pretrain_models/CRNN/best_accuracy  |  \          |
+|      save_res_path          |    Set the save address of the test model results       |    ./output/det_db/predicts_db.txt    |     Only valid in the text detection model |
-|      checkpoints         |    Load saved model path            |       None        |    Used to load saved parameters to continue training after interruption |
-|      save_inference_dir  |   path to save model for inference |          None        |   Use to save inference model |
+### Optimizer ([ppocr/optimizer](../../ppocr/optimizer))
-## INTRODUCTION TO READER PARAMETERS OF CONFIGURATION FILE
+|         Parameter             |            Use            |      Defaults        |            Note             |
+| :---------------------: |  :---------------------:   | :--------------:  |   :--------------------:   |
-Take `rec_chinese_reader.yml` as an example:
+|      name        |         Optimizer class name          |  Adam  |  Currently supports`Momentum`,`Adam`,`RMSProp`, see [ppocr/optimizer/optimizer.py](../../ppocr/optimizer/optimizer.py)  |
+|      beta1           |    Set the exponential decay rate for the 1st moment estimates  |       0.9         |               \             |
-|         Parameter             |            Use                |      Default       |            Note            |
+|      beta2           |    Set the exponential decay rate for the 2nd moment estimates  |     0.999         |               \             |
-| :----------------------: |  :---------------------:   | :--------------:  |   :--------------------:   |
+|      **lr**                |         Set the learning rate decay method       |   -    |       \  |
-|      reader_function     |    Select data reading method        |  ppocr.data.rec.dataset_traversal,SimpleReader  | Support two data reading methods: SimpleReader / LMDBReader  |
+|        name    |      Learning rate decay class name   |         Cosine       | Currently supports`Linear`,`Cosine`,`Step`,`Piecewise`, see[ppocr/optimizer/learning_rate.py](../../ppocr/optimizer/learning_rate.py) |
-|      num_workers             |    Set the number of data reading threads            |       8        |                \                 |
+|        learning_rate      |    Set the base learning rate        |       0.001      |  \        |
-|      img_set_dir          |    Image folder path             |       ./train_data        |                \                 |
+|      **regularizer**      |  Set network regularization method        |       -      | \        |
-|      label_file_path      |    Groundtruth file path           |       ./train_data/rec_gt_train.txt| \    |
+|        name      |    Regularizer class name      |       L2     |  Currently support`L1`,`L2`, see[ppocr/optimizer/regularizer.py](../../ppocr/optimizer/regularizer.py)        |
-|      infer_img            |    Result folder path     |       ./infer_img | \|
+|        factor      |    Learning rate decay coefficient       |       0.00004     |  \        |
+### Architecture ([ppocr/modeling](../../ppocr/modeling))
+In ppocr, the network is divided into four stages: Transform, Backbone, Neck and Head
+|         Parameter             |            Use            |      Defaults        |            Note             |
+| :---------------------: |  :---------------------:   | :--------------:  |   :--------------------:   |
+|      model_type        |         Network Type          |  rec  |  Currently support`rec`,`det`,`cls`  |
+|      algorithm           |    Model name  |       CRNN         |               See [algorithm_overview](./algorithm_overview.md) for the support list             |
+|      **Transform**           |    Set the transformation method  |       -       |               Currently only recognition algorithms are supported, see [ppocr/modeling/transform](../../ppocr/modeling/transform) for details            |
+|        name    |      Transformation class name   |         TPS       | Currently supports `TPS` |
+|        num_fiducial      |   Number of TPS control points        |       20      |  Ten on the top and bottom       |
+|        loc_lr      |    Localization network learning rate        |       0.1      |  \      |
+|        model_name      |    Localization network size        |       small      |  Currently support`small`,`large`       |
+|      **Backbone**      |  Set the network backbone class name        |       -      | see [ppocr/modeling/backbones](../../ppocr/modeling/backbones)        |
+|        name      |    backbone class name       |       ResNet     | Currently support`MobileNetV3`,`ResNet`        |
+|        layers      |    resnet layers       |       34     |  Currently support18,34,50,101,152,200       |
+|        model_name      |    MobileNetV3 network size       |       small     |  Currently support`small`,`large`       |
+|      **Neck**      |  Set network neck        |       -      | see[ppocr/modeling/necks](../../ppocr/modeling/necks)        |
+|        name      |    neck class name       |       SequenceEncoder     | Currently support`SequenceEncoder`,`DBFPN`        |
+|        encoder_type      |    SequenceEncoder encoder type       |       rnn     |  Currently support`reshape`,`fc`,`rnn`       |
+|        hidden_size      |   rnn number of internal units       |       48     |  \      |
+|        out_channels      |   Number of DBFPN output channels       |       256     |  \      |
+|      **Head**      |  Set the network head        |       -      | see[ppocr/modeling/heads](../../ppocr/modeling/heads)        |
+|        name      |    head class name       |       CTCHead     | Currently support`CTCHead`,`DBHead`,`ClsHead`        |
+|        fc_decay      |    CTCHead regularization coefficient       |       0.0004     |  \      |
+|        k      |   DBHead binarization coefficient       |       50     |  \      |
+|        class_dim      |   ClsHead output category number       |       2     |  \      |
+### Loss ([ppocr/losses](../../ppocr/losses))
+|         Parameter             |            Use            |      Defaults        |            Note             |
+| :---------------------: |  :---------------------:   | :--------------:  |   :--------------------:   |
+|      name        |         loss class name          |  CTCLoss  |  Currently support`CTCLoss`,`DBLoss`,`ClsLoss`  |
+|      balance_loss        |        Whether to balance the number of positive and negative samples in DBLossloss (using OHEM)         |  True  |  \  |
+|      ohem_ratio        |        The negative and positive sample ratio of OHEM in DBLossloss         |  3  |  \  |
+|      main_loss_type        |        The loss used by shrink_map in DBLossloss        |  DiceLoss  |  Currently support`DiceLoss`,`BCELoss`  |
+|      alpha        |        The coefficient of shrink_map_loss in DBLossloss       |  5  |  \  |
+|      beta        |        The coefficient of threshold_map_loss in DBLossloss       |  10  |  \  |
-## INTRODUCTION TO OPTIMIZER PARAMETERS OF CONFIGURATION FILE
+### PostProcess ([ppocr/postprocess](../../ppocr/postprocess))
-Take `rec_icdar15_train.yml` as an example:
+|         Parameter             |            Use            |      Defaults        |            Note             |
+| :---------------------: |  :---------------------:   | :--------------:  |   :--------------------:   |
+|      name        |         Post-processing class name          |  CTCLabelDecode  |  Currently support`CTCLoss`,`AttnLabelDecode`,`DBPostProcess`,`ClsPostProcess`  |
+|      thresh        |        The threshold for binarization of the segmentation map in DBPostProcess         |  0.3  |  \  |
+|      box_thresh        |        The threshold for filtering output boxes in DBPostProcess. Boxes below this threshold will not be output         |  0.7  |  \  |
+|      max_candidates        |        The maximum number of text boxes output in DBPostProcess        |  1000  |   |
+|      unclip_ratio        |        The unclip ratio of the text box in DBPostProcess       |  2.0  |  \  |
+### Metric ([ppocr/metrics](../../ppocr/metrics))
+|         Parameter             |            Use            |      Defaults        |            Note             |
+| :---------------------: |  :---------------------:   | :--------------:  |   :--------------------:   |
+|      name        |         Metric method name          |  CTCLabelDecode  |  Currently support`DetMetric`,`RecMetric`,`ClsMetric`  |
+|      main_indicator        |        Main indicators, used to select the best model        |  acc |  For the detection method is hmean, the recognition and classification method is acc  |
-|         Parameter             |            Use          |      Default        |            None             |
+### Dataset  ([ppocr/data](../../ppocr/data))
+|         Parameter             |            Use            |      Defaults        |            Note             |
 | :---------------------: |  :---------------------:   | :--------------:  |   :--------------------:   |
-|         function        |         Select Optimizer function          |  pocr.optimizer,AdamDecay  |  Only support Adam  |
+|      **dataset**        |         Return one sample per iteration          |  -  |  -  |
-|         base_lr         |      Set the base lr          |       0.0005      |               \             |
+|      name        |        dataset class name         |  SimpleDataSet |   Currently support`SimpleDataSet`,`LMDBDateSet`  |
-|         beta1           |    Set the exponential decay rate for the 1st moment estimates  |       0.9         |               \             |
+|      data_dir        |        Image folder path        |  ./train_data |  \  |
-|         beta2           |    Set the exponential decay rate for the 2nd moment estimates  |     0.999         |               \             |
+|      label_file_list        |        Groundtruth file path         |  ["./train_data/train_list.txt"] | This parameter is not required when dataset is LMDBDateSet   |
-|         decay           |         Whether to use decay       |    \              |               \             |
+|      ratio_list        |        Ratio of data set         |  [1.0] | If there are two train_lists in label_file_list and ratio_list is [0.4,0.6], 40% will be sampled from train_list1, and 60% will be sampled from train_list2 to combine the entire dataset   |
-|      function(decay)    |         Set the decay function       |   cosine_decay    |         Support cosine_decay, cosine_decay_warmup and piecewise_decay            |
+|      transforms        |        List of methods to transform images and labels         |  [DecodeImage,CTCLabelEncode,RecResizeImg,KeepKeys] |   see[ppocr/data/imaug](../../ppocr/data/imaug)  |
-|      step_each_epoch    |      The number of steps in an epoch. Used in cosine_decay/cosine_decay_warmup  |         20       | Calculation: total_image_num / (batch_size_per_card * card_size) |
+|      **loader**        |        dataloader related         |  - |   |
-|        total_epoch      |    The number of epochs. Used in cosine_decay/cosine_decay_warmup      |       1000      | Consistent with Global.epoch_num      |
+|      shuffle        |        Does each epoch disrupt the order of the data set         |  True | \  |
-|        warmup_minibatch      |  Number of steps for linear warmup. Used in cosine_decay_warmup        |       1000      | \        |
+|      batch_size_per_card        |        Single card batch size during training         |  256 | \  |
-|        boundaries      |    The step intervals to reduce learning rate. Used in piecewise_decay       |       -      |  The format is list        |
+|      drop_last        |        Whether to discard the last incomplete mini-batch because the number of samples in the data set cannot be divisible by batch_size        |  True | \  |
-|        decay_rate      |    Learning rate decay rate. Used in piecewise_decay       |       -      |  \        |
+|      num_workers        |        The number of sub-processes used to load data, if it is 0, the sub-process is not started, and the data is loaded in the main process       |  8 | \  |
\ No newline at end of file
--- a/doc/doc_en/inference_en.md
+++ b/doc/doc_en/inference_en.md
--- a/doc/doc_en/recognition_en.md
+++ b/doc/doc_en/recognition_en.md
@@ -135,7 +135,7 @@ If you need to customize dic file, please add character_dict_path field in confi
 <a name="Add_space_category"></a>
 - Add space category
-If you want to support the recognition of the `space` category, please set the `use_space_char` field in the yml file to `true`.
+If you want to support the recognition of the `space` category, please set the `use_space_char` field in the yml file to `True`.
 **Note: use_space_char only takes effect when character_type=ch**
@@ -158,10 +158,9 @@ tar -xf rec_mv3_none_bilstm_ctc.tar && rm -rf rec_mv3_none_bilstm_ctc.tar
 Start training:
 ```
-# GPU training Support single card and multi-card training, specify the card number through CUDA_VISIBLE_DEVICES
+# GPU training Support single card and multi-card training, specify the card number through --gpus
-export CUDA_VISIBLE_DEVICES=0,1,2,3
 # Training icdar15 English data and saving the log as train_rec.log
-python3 tools/train.py -c configs/rec/rec_icdar15_train.yml 2>&1 | tee train_rec.log
+python3 -m paddle.distributed.launch --gpus '0,1,2,3'  tools/train.py -c configs/rec/rec_icdar15_train.yml
 ```
 <a name="Data_Augmentation"></a>
 - Data Augmentation
@@ -184,8 +183,8 @@ If the evaluation set is large, the test will be time-consuming. It is recommend
 | Configuration file |  Algorithm |   backbone |   trans   |   seq      |     pred     |
 | :--------: |  :-------:   | :-------:  |   :-------:   |   :-----:   |  :-----:   |
-| [rec_chinese_lite_train_v1.1.yml](../../configs/rec/ch_ppocr_v1.1/rec_chinese_lite_train_v1.1.yml) |  CRNN |   Mobilenet_v3 small 0.5 |  None   |  BiLSTM |  ctc  |
+| [rec_chinese_lite_train_v2.0.yml](../../configs/rec/ch_ppocr_v2.0/rec_chinese_lite_train_v2.0.yml) |  CRNN |   Mobilenet_v3 small 0.5 |  None   |  BiLSTM |  ctc  |
-| [rec_chinese_common_train_v1.1.yml](../../configs/rec/ch_ppocr_v1.1/rec_chinese_common_train_v1.1.yml) |  CRNN | ResNet34_vd |  None   |  BiLSTM |  ctc  |
+| [rec_chinese_common_train_v2.0.yml](../../configs/rec/ch_ppocr_v2.0/rec_chinese_common_train_v2.0.yml) |  CRNN | ResNet34_vd |  None   |  BiLSTM |  ctc  |
 | rec_chinese_lite_train.yml |  CRNN |   Mobilenet_v3 small 0.5 |  None   |  BiLSTM |  ctc  |
 | rec_chinese_common_train.yml |  CRNN |   ResNet34_vd |  None   |  BiLSTM |  ctc  |
 | rec_icdar15_train.yml |  CRNN |   Mobilenet_v3 large 0.5 |  None   |  BiLSTM |  ctc  |
@@ -199,39 +198,69 @@ If the evaluation set is large, the test will be time-consuming. It is recommend
 | rec_r34_vd_tps_bilstm_ctc.yml | STARNet | Resnet34_vd | tps | BiLSTM | ctc |
 For training Chinese data, it is recommended to use
-训练中文数据，推荐使用[rec_chinese_lite_train_v1.1.yml](../../configs/rec/ch_ppocr_v1.1/rec_chinese_lite_train_v1.1.yml). If you want to try the result of other algorithms on the Chinese data set, please refer to the following instructions to modify the configuration file:
+[rec_chinese_lite_train_v2.0.yml](../../configs/rec/ch_ppocr_v2.0/rec_chinese_lite_train_v2.0.yml). If you want to try the result of other algorithms on the Chinese data set, please refer to the following instructions to modify the configuration file:
 co
-Take `rec_mv3_none_none_ctc.yml` as an example:
+Take `rec_chinese_lite_train_v2.0.yml` as an example:
 ```
 Global:
  ...
-  # Modify image_shape to fit long text
+  # Add a custom dictionary, such as modify the dictionary, please point the path to the new dictionary
-  image_shape: [3, 32, 320]
+  character_dict_path: ppocr/utils/ppocr_keys_v1.txt
-  ...
  # Modify character type
  character_type: ch
-  # Add a custom dictionary, such as modify the dictionary, please point the path to the new dictionary
-  character_dict_path: ./ppocr/utils/ppocr_keys_v1.txt
  ...
-  # Modify reader type
-  reader_yml: ./configs/rec/rec_chinese_reader.yml
-  # Whether to use data augmentation
-  distort: true
  # Whether to recognize spaces
-  use_space_char: true
+  use_space_char: True
-  ...
-...
 Optimizer:
  ...
  # Add learning rate decay strategy
-  decay:
+  lr:
-    function: cosine_decay
+    name: Cosine
-    # Each epoch contains iter number
+    learning_rate: 0.001
-    step_each_epoch: 20
+  ...
-    # Total epoch number
-    total_epoch: 1000
+...
+Train:
+  dataset:
+    # Type of dataset，we support LMDBDateSet and SimpleDataSet
+    name: SimpleDataSet
+    # Path of dataset
+    data_dir: ./train_data/
+    # Path of train list
+    label_file_list: ["./train_data/train_list.txt"]
+    transforms:
+      ...
+      - RecResizeImg:
+          # Modify image_shape to fit long text
+          image_shape: [3, 32, 320]
+      ...
+  loader:
+    ...
+    # Train batch_size for Single card
+    batch_size_per_card: 256
+    ...
+Eval:
+  dataset:
+    # Type of dataset，we support LMDBDateSet and SimpleDataSet
+    name: SimpleDataSet
+    # Path of dataset
+    data_dir: ./train_data
+    # Path of eval list
+    label_file_list: ["./train_data/val_list.txt"]
+    transforms:
+      ...
+      - RecResizeImg:
+          # Modify image_shape to fit long text
+          image_shape: [3, 32, 320]
+      ...
+  loader:
+    # Eval batch_size for Single card
+    batch_size_per_card: 256
+    ...
 ```
 **Note that the configuration file for prediction/evaluation must be consistent with the training.**
@@ -257,18 +286,33 @@ Take `rec_french_lite_train` as an example:
 ```
 Global:
  ...
-  # Add a custom dictionary, if you modify the dictionary
+  # Add a custom dictionary, such as modify the dictionary, please point the path to the new dictionary
-  # please point the path to the new dictionary
  character_dict_path: ./ppocr/utils/dict/french_dict.txt
-  # Add data augmentation during training
-  distort: true
-  # Identify spaces
-  use_space_char: true
-  ...
-  # Modify reader type
-  reader_yml: ./configs/rec/multi_languages/rec_french_reader.yml
  ...
+  # Whether to recognize spaces
+  use_space_char: True
 ...
+Train:
+  dataset:
+    # Type of dataset，we support LMDBDateSet and SimpleDataSet
+    name: SimpleDataSet
+    # Path of dataset
+    data_dir: ./train_data/
+    # Path of train list
+    label_file_list: ["./train_data/french_train.txt"]
+    ...
+Eval:
+  dataset:
+    # Type of dataset，we support LMDBDateSet and SimpleDataSet
+    name: SimpleDataSet
+    # Path of dataset
+    data_dir: ./train_data
+    # Path of eval list
+    label_file_list: ["./train_data/french_val.txt"]
+    ...
 ```
 <a name="EVALUATION"></a>
@@ -277,9 +321,8 @@ Global:
 The evaluation data set can be modified via `configs/rec/rec_icdar15_reader.yml` setting of `label_file_path` in EvalReader.
 ```
-export CUDA_VISIBLE_DEVICES=0
 # GPU evaluation, Global.checkpoints is the weight to be tested
-python3 tools/eval.py -c configs/rec/rec_icdar15_reader.yml -o Global.checkpoints={path/to/weights}/best_accuracy
+python3 -m paddle.distributed.launch --gpus '0' tools/eval.py -c configs/rec/rec_icdar15_reader.yml -o Global.checkpoints={path/to/weights}/best_accuracy
 ```
 <a name="PREDICTION"></a>
@@ -294,7 +337,7 @@ The default prediction picture is stored in `infer_img`, and the weight is speci
 ```
 # Predict English results
-python3 tools/infer_rec.py -c configs/rec/ch_ppocr_v1.1/rec_chinese_lite_train_v1.1.yml -o Global.checkpoints={path/to/weights}/best_accuracy TestReader.infer_img=doc/imgs_words/en/word_1.jpg
+python3 tools/infer_rec.py -c configs/rec/ch_ppocr_v2.0/rec_chinese_lite_train_v2.0.yml -o Global.checkpoints={path/to/weights}/best_accuracy TestReader.infer_img=doc/imgs_words/en/word_1.jpg
 ```
 Input image:
@@ -309,11 +352,11 @@ infer_img: doc/imgs_words/en/word_1.png
     word : joint
 ```
-The configuration file used for prediction must be consistent with the training. For example, you completed the training of the Chinese model with `python3 tools/train.py -c configs/rec/ch_ppocr_v1.1/rec_chinese_lite_train_v1.1.yml`, you can use the following command to predict the Chinese model:
+The configuration file used for prediction must be consistent with the training. For example, you completed the training of the Chinese model with `python3 tools/train.py -c configs/rec/ch_ppocr_v2.0/rec_chinese_lite_train_v2.0.yml`, you can use the following command to predict the Chinese model:
 ```
 # Predict Chinese results
-python3 tools/infer_rec.py -c configs/rec/ch_ppocr_v1.1/rec_chinese_lite_train_v1.1.yml -o Global.checkpoints={path/to/weights}/best_accuracy TestReader.infer_img=doc/imgs_words/ch/word_1.jpg
+python3 tools/infer_rec.py -c configs/rec/ch_ppocr_v2.0/rec_chinese_lite_train_v2.0.yml -o Global.checkpoints={path/to/weights}/best_accuracy TestReader.infer_img=doc/imgs_words/ch/word_1.jpg
 ```
 Input image:

--- a/doc/doc_en/tree_en.md
+++ b/doc/doc_en/tree_en.md
--- a/doc/doc_en/whl_en.md
+++ b/doc/doc_en/whl_en.md
@@ -271,6 +271,59 @@ im_show.save('result.jpg')
 paddleocr --image_dir PaddleOCR/doc/imgs/11.jpg --det_model_dir {your_det_model_dir} --rec_model_dir {your_rec_model_dir} --rec_char_dict_path {your_rec_char_dict_path} --cls_model_dir {your_cls_model_dir} --use_angle_cls true --cls true
 ```
+### Use web images or numpy array as input
+1. Web image
+Use by code
+```python
+from paddleocr import PaddleOCR, draw_ocr
+ocr = PaddleOCR(use_angle_cls=True, lang="ch") # need to run only once to download and load model into memory
+img_path = 'http://n.sinaimg.cn/ent/transform/w630h933/20171222/o111-fypvuqf1838418.jpg'
+result = ocr.ocr(img_path, cls=True)
+for line in result:
+    print(line)
+# show result
+from PIL import Image
+image = Image.open(img_path).convert('RGB')
+boxes = [line[0] for line in result]
+txts = [line[1][0] for line in result]
+scores = [line[1][1] for line in result]
+im_show = draw_ocr(image, boxes, txts, scores, font_path='/path/to/PaddleOCR/doc/simfang.ttf')
+im_show = Image.fromarray(im_show)
+im_show.save('result.jpg')
+```
+Use by command line
+```bash
+paddleocr --image_dir http://n.sinaimg.cn/ent/transform/w630h933/20171222/o111-fypvuqf1838418.jpg --use_angle_cls=true
+```
+2. Numpy array
+Support numpy array as input only when used by code
+```python
+from paddleocr import PaddleOCR, draw_ocr
+ocr = PaddleOCR(use_angle_cls=True, lang="ch") # need to run only once to download and load model into memory
+img_path = 'PaddleOCR/doc/imgs/11.jpg'
+img = cv2.imread(img_path)
+# img = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY), If your own training model supports grayscale images, you can uncomment this line
+result = ocr.ocr(img_path, cls=True)
+for line in result:
+    print(line)
+# show result
+from PIL import Image
+image = Image.open(img_path).convert('RGB')
+boxes = [line[0] for line in result]
+txts = [line[1][0] for line in result]
+scores = [line[1][1] for line in result]
+im_show = draw_ocr(image, boxes, txts, scores, font_path='/path/to/PaddleOCR/doc/simfang.ttf')
+im_show = Image.fromarray(im_show)
+im_show.save('result.jpg')
+```
 ## Parameter Description
 | Parameter                    | Description                                                                                                                                                                                                                 | Default value                  |
@@ -295,6 +348,7 @@ paddleocr --image_dir PaddleOCR/doc/imgs/11.jpg --det_model_dir {your_det_model_
 | max_text_length         | The maximum text length that the recognition algorithm can recognize                                                                                                                                                                                         | 25                      |
 | rec_char_dict_path      | the alphabet path which needs to be modified to your own path when `rec_model_Name` use mode 2                                                                                                                                              | ./ppocr/utils/ppocr_keys_v1.txt                        |
 | use_space_char          | Whether to recognize spaces                                                                                                                                                                                                         | TRUE                    |
+| drop_score          | Filter the output by score (from the recognition model), and those below this score will not be returned                                                                                                                                                                                                        | 0.5                    |
 | use_angle_cls          | Whether to load classification model                                                                                                                                                                                                       | FALSE                    |
 | cls_model_dir           | the classification inference model folder. There are two ways to transfer parameters, 1. None: Automatically download the built-in model to `~/.paddleocr/cls`; 2. The path of the inference model converted by yourself, the model and params files must be included in the model path | None |
 | cls_image_shape         | image shape of classification algorithm                                                                                                                                                                                            | "3,48,192"              |
@@ -305,4 +359,4 @@ paddleocr --image_dir PaddleOCR/doc/imgs/11.jpg --det_model_dir {your_det_model_
 | lang                     | The support language, now only Chinese(ch)、English(en)、French(french)、German(german)、Korean(korean)、Japanese(japan) are supported                                                                                                                                                                                                  | ch                    |
 | det                     | Enable detction when `ppocr.ocr` func exec                                                                                                                                                                                                   | TRUE                    |
 | rec                     | Enable recognition when `ppocr.ocr` func exec                                                                                                                                                                                                   | TRUE                    |
-| cls                     | Enable classification when `ppocr.ocr` func exec                                                                                                                                                                                                   | FALSE                    |
+| cls                     | Enable classification when `ppocr.ocr` func exec((Use use_angle_cls in command line mode to control whether to start classification in the forward direction)                                                                                                                                                                                                   | FALSE                    |
--- a/paddleocr.py
+++ b/paddleocr.py
--- a/ppocr/data/imaug/__init__.py
+++ b/ppocr/data/imaug/__init__.py
@@ -26,6 +26,9 @@ from .randaugment import RandAugment
 from .operators import *
 from .label_ops import *
+from .east_process import *
+from .sast_process import *
 def transform(data, ops=None):
    """ transform """