concat datasets pytorch metric (#1447)

tests/regression/mmocr.yml

@@ -16,6 +16,7 @@ globals:
       metric_key: 0_word_acc_ignore_case
       tolerance: 1.0 # metric
       multi_value: 100
+      dataset: IIIT5K
   convert_image_det: &convert_image_det
     input_img: *img_densetext_det
     test_img: *img_demo_text_det

tools/regression_test.py

@@ -314,6 +314,8 @@ def get_pytorch_result(model_name: str, meta_info: dict, checkpoint_path: Path,
             for ds in configured_dataset:
                 if ds in _metrics:
                     pytorch_metric.update(_metrics[ds])
+                if ds == dataset:
+                    pytorch_metric.update(_metrics)
         else:
             pytorch_metric.update(_metrics)
         task_name = metafile_metric['Task']