"Dataset 'CrowdHuman_train' is not registered

[Aliweka2020]

Can't train on CrowdHuman dataset?
Is CrowdHuman still not available on detectron 2 ...?

[Aliweka2020]

when I adopted the CrowdHuman evaluator file from NOH-NMS project https://github.com/TencentYoutuResearch/PedestrianDetection-NohNMS

I got this error

Converting dataset dicts into COCO format
4370it [01:39, 43.94it/s]
outside num: 1976, clip num: 0
json dump falied in crowdhuman convert processing.
Python 3.8.13 | packaged by conda-forge | (default, Mar 25 2022, 05:59:00) [MSC v.1929 64 bit (AMD64)]
Type 'copyright', 'credits' or 'license' for more information
IPython 8.4.0 -- An enhanced Interactive Python. Type '?' for help.

[Yamahhh]

I tried the same work，I used "register_crowdhuman_instances" in train_net.py, that func from ./detectron2/data/datasets/crowdhuman.py .But I got this error

Traceback (most recent call last):
File "/home/cyl/.conda/envs/sparse/lib/python3.6/site-packages/torch/multiprocessing/spawn.py", line 59, in _wrap
fn(i, *args)
File "/data/cyl/SparseR-CNN-main/detectron2/engine/launch.py", line 95, in _distributed_worker
main_func(*args)
File "/data/cyl/SparseR-CNN-main/projects/SparseRCNN/train_net.py", line 171, in main
trainer = Trainer(cfg)
File "/data/cyl/SparseR-CNN-main/detectron2/engine/defaults.py", line 284, in init
data_loader = self.build_train_loader(cfg)
File "/data/cyl/SparseR-CNN-main/projects/SparseRCNN/train_net.py", line 54, in build_train_loader
return build_detection_train_loader(cfg, mapper=mapper)
File "/data/cyl/SparseR-CNN-main/detectron2/config/config.py", line 201, in wrapped
explicit_args = _get_args_from_config(from_config, *args, **kwargs)
File "/data/cyl/SparseR-CNN-main/detectron2/config/config.py", line 236, in _get_args_from_config
ret = from_config_func(*args, **kwargs)
File "/data/cyl/SparseR-CNN-main/detectron2/data/build.py", line 309, in _train_loader_from_config
proposal_files=cfg.DATASETS.PROPOSAL_FILES_TRAIN if cfg.MODEL.LOAD_PROPOSALS else None,
File "/data/cyl/SparseR-CNN-main/detectron2/data/build.py", line 222, in get_detection_dataset_dicts
dataset_dicts = [DatasetCatalog.get(dataset_name) for dataset_name in dataset_names]
File "/data/cyl/SparseR-CNN-main/detectron2/data/build.py", line 222, in
dataset_dicts = [DatasetCatalog.get(dataset_name) for dataset_name in dataset_names]
File "/data/cyl/SparseR-CNN-main/detectron2/data/catalog.py", line 58, in get
return f()
File "/data/cyl/SparseR-CNN-main/detectron2/data/datasets/crowdhuman.py", line 221, in
DatasetCatalog.register(name, lambda: load_crowdhuman_json(json_file, image_root, name))
File "/data/cyl/SparseR-CNN-main/detectron2/data/datasets/crowdhuman.py", line 58, in load_crowdhuman_json
coco_api = COCO(json_file)
File "/home/cyl/.conda/envs/sparse/lib/python3.6/site-packages/pycocotools/coco.py", line 82, in init
dataset = json.load(f)
File "/home/cyl/.conda/envs/sparse/lib/python3.6/json/init.py", line 299, in load
parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
File "/home/cyl/.conda/envs/sparse/lib/python3.6/json/init.py", line 354, in loads
return _default_decoder.decode(s)
File "/home/cyl/.conda/envs/sparse/lib/python3.6/json/decoder.py", line 342, in decode
raise JSONDecodeError("Extra data", s, end)
json.decoder.JSONDecodeError: Extra data: line 2 column 1 (char 1379)

I tried use json.loads(f) instead of json.load(f), but it doesn't seem to work

[Czs99]

@Yamahhh
May I ask where the tutorial mentioned the position to add codes: """from detectron2.data.datasets import register_coco_instances register_coco_instances("my_dataset", {}, "json_annotation.json", "path/to/image/dir")""" ? I found it's the train_net.py file when I saw your reply and solve my custom coco format data set unregistered error,thanks a lot!