fix bug when running det eval

doc/detection.md

@@ -79,10 +79,10 @@ python3 tools/eval.py -c configs/det/det_mv3_db.yml  -o Global.checkpoints="./ou
 
 测试单张图像的检测效果
 ```
-python3 tools/infer_det.py -c config/det/det_mv3_db.yml -o TestReader.single_img_path="./doc/imgs_en/img_10.jpg"
+python3 tools/infer_det.py -c config/det/det_mv3_db.yml -o TestReader.single_img_path="./doc/imgs_en/img_10.jpg" Global.checkpoints="./output/det_db/best_accuracy"
 ```
 
 测试文件夹下所有图像的检测效果
 ```
-python3 tools/infer_det.py -c config/det/det_mv3_db.yml -o TestReader.single_img_path="./doc/imgs_en/"
+python3 tools/infer_det.py -c config/det/det_mv3_db.yml -o TestReader.single_img_path="./doc/imgs_en/" Global.checkpoints="./output/det_db/best_accuracy"
 ```

tools/eval.py

@@ -72,12 +72,12 @@ def main():
     init_model(config, eval_program, exe)
 
     if alg in ['EAST', 'DB']:
-        eval_reader = reader_main(config=config, mode="test")
+        eval_reader = reader_main(config=config, mode="eval")
         eval_info_dict = {'program':eval_program,\
             'reader':eval_reader,\
             'fetch_name_list':eval_fetch_name_list,\
             'fetch_varname_list':eval_fetch_varname_list}
-        metrics = eval_det_run(exe, config, eval_info_dict, "test")
+        metrics = eval_det_run(exe, config, eval_info_dict, "eval")
     else:
         reader_type = config['Global']['reader_yml']
         if "benchmark" not in reader_type: