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# Benchmark

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本文给出了中英文OCR系列模型精度指标和在各平台预测耗时的benchmark。
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## 测试数据  
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针对OCR实际应用场景,包括合同,车牌,铭牌,火车票,化验单,表格,证书,街景文字,名片,数码显示屏等,收集的300张图像,每张图平均有17个文本框,下图给出了一些图像示例。
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<div align="center">
<img src="../datasets/doc.jpg"  width = "1000" height = "500" />
</div>
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## 评估指标  
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说明:
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- 检测输入图像的的长边尺寸是960。
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- 评估耗时阶段为图像预测耗时,不包括图像的预处理和后处理。  
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- `Intel至强6148`为服务器端CPU型号,测试中使用Intel MKL-DNN 加速。
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- `骁龙855`为移动端处理平台型号。  
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预测模型大小和整体识别精度对比
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| 模型名称                     | 整体模型<br>大小\(M\) | 检测模型<br>大小\(M\) | 方向分类器<br>模型大小\(M\) | 识别模型<br>大小\(M\) | 整体识别<br>F\-score |
|:-:|:-:|:-:|:-:|:-:|:-:|
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| PP-OCRv2 | 11\.6        | 3\.0        | 0\.9           | 8\.6        | 0\.5224      |
| PP-OCR mobile |   8\.1  | 2\.6        | 0\.9           | 4\.6        | 0\.503       |
| PP-OCR server | 155\.1  | 47\.2       | 0\.9           | 107         | 0\.570       |
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预测模型在CPU和GPU上的速度对比,单位ms
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| 模型名称                     | CPU   | T4 GPU  |
|:-:|:-:|:-:|
| PP-OCRv2 | 330  | 111 |
| PP-OCR mobile | 356  | 11 6|
| PP-OCR server | 1056  | 200 |
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更多 PP-OCR 系列模型的预测指标可以参考[PP-OCR Benchmark](https://github.com/PaddlePaddle/PaddleOCR/blob/release/2.2/doc/doc_ch/benchmark.md)