mmdetection错误合集

错误一: 由于coco 数据集错误导致的报错 --时间2021年6月9号

• 报错信息:

fatal: not a git repository (or any parent up to mount point /media/yuqing)
Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).
loading annotations into memory...
Traceback (most recent call last):
  File "/home/yuqing/anaconda3/envs/yolodet/lib/python3.7/site-packages/mmcv/utils/registry.py", line 51, in build_from_cfg
    return obj_cls(**args)
  File "/media/yuqing/My Passport/cv_coder/mmdetection-2.12.0/mmdet/datasets/custom.py", line 88, in __init__
    self.data_infos = self.load_annotations(self.ann_file)
  File "/media/yuqing/My Passport/cv_coder/mmdetection-2.12.0/mmdet/datasets/coco.py", line 47, in load_annotations
    self.coco = COCO(ann_file)
  File "/media/yuqing/My Passport/cv_coder/mmdetection-2.12.0/mmdet/datasets/api_wrappers/coco_api.py", line 22, in __init__
    super().__init__(annotation_file=annotation_file)
  File "/home/yuqing/anaconda3/envs/yolodet/lib/python3.7/site-packages/pycocotools/coco.py", line 85, in __init__
    dataset = json.load(f)
  File "/home/yuqing/anaconda3/envs/yolodet/lib/python3.7/json/__init__.py", line 296, in load
    parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
  File "/home/yuqing/anaconda3/envs/yolodet/lib/python3.7/json/__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "/home/yuqing/anaconda3/envs/yolodet/lib/python3.7/json/decoder.py", line 340, in decode
    raise JSONDecodeError("Extra data", s, end)
json.decoder.JSONDecodeError: Extra data: line 1 column 3 (char 2)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "tools/train.py", line 188, in <module>
    main()
  File "tools/train.py", line 184, in main
    meta=meta)
  File "/media/yuqing/My Passport/cv_coder/mmdetection-2.12.0/mmdet/apis/train.py", line 140, in train_detector
    val_dataset = build_dataset(cfg.data.val, dict(test_mode=True))
  File "/media/yuqing/My Passport/cv_coder/mmdetection-2.12.0/mmdet/datasets/builder.py", line 71, in build_dataset
    dataset = build_from_cfg(cfg, DATASETS, default_args)
  File "/home/yuqing/anaconda3/envs/yolodet/lib/python3.7/site-packages/mmcv/utils/registry.py", line 54, in build_from_cfg
    raise type(e)(f'{obj_cls.__name__}: {e}')
TypeError: __init__() missing 2 required positional arguments: 'doc' and 'pos'

解决方法:

• 正确放置coco数据集,出现此类错误时想到是数据集错误