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mmedit.datasets.basic_frames_dataset

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BasicFramesDataset

BasicFramesDataset for open source projects in OpenMMLab/MMEditing.

class mmedit.datasets.basic_frames_dataset.BasicFramesDataset(ann_file: str = '', metainfo: Optional[dict] = None, data_root: Optional[str] = None, data_prefix: dict = dict(img=''), pipeline: List[Union[dict, Callable]] = [], test_mode: bool = False, filename_tmpl: dict = dict(), search_key: Optional[str] = None, backend_args: Optional[dict] = None, depth: int = 1, num_input_frames: Optional[int] = None, num_output_frames: Optional[int] = None, fixed_seq_len: Optional[int] = None, load_frames_list: dict = dict(), **kwargs)[source]

Bases: mmengine.dataset.BaseDataset

BasicFramesDataset for open source projects in OpenMMLab/MMEditing.

This dataset is designed for low-level vision tasks with frames, such as video super-resolution and video frame interpolation.

The annotation file is optional.

If use annotation file, the annotation format can be shown as follows.

Case 1 (Vid4):

    calendar 41
    city 34
    foliage 49
    walk 47

Case 2 (REDS):

    000/00000000.png (720, 1280, 3)
    000/00000001.png (720, 1280, 3)

Case 3 (Vimeo90k):

    00001/0266 (256, 448, 3)
    00001/0268 (256, 448, 3)
Parameters
  • ann_file (str) – Annotation file path. Defaults to ‘’.

  • metainfo (dict, optional) – Meta information for dataset, such as class information. Defaults to None.

  • data_root (str, optional) – The root directory for data_prefix and ann_file. Defaults to None.

  • data_prefix (dict, optional) – Prefix for training data. Defaults to dict(img=’’, gt=’’).

  • pipeline (list, optional) – Processing pipeline. Defaults to [].

  • test_mode (bool, optional) – test_mode=True means in test phase. Defaults to False.

  • filename_tmpl (str) – Template for each filename. Note that the template excludes the file extension. Default: ‘{}’.

  • search_key (str) – The key used for searching the folder to get data_list. Default: ‘gt’.

  • backend_args (dict, optional) – Arguments to instantiate the preifx of uri corresponding backend. Defaults to None.

  • depth (int) – The depth of path. Default: 1

  • num_input_frames (None | int) – Number of input frames. Default: None.

  • num_output_frames (None | int) – Number of output frames. Default: None.

  • fixed_seq_len (None | int) – The fixed sequence length. If None, BasicFramesDataset will obtain the length of each sequence. Default: None.

  • load_frames_list (dict) – Load frames list for each key. Default: dict().

Examples

Assume the file structure as the following:

mmediting (root) ├── mmedit ├── tools ├── configs ├── data │ ├── Vid4 │ │ ├── BIx4 │ │ │ ├── city │ │ │ │ ├── img1.png │ │ ├── GT │ │ │ ├── city │ │ │ │ ├── img1.png │ │ ├── meta_info_Vid4_GT.txt │ ├── places │ │ ├── sequences | | | ├── 00001 │ │ │ │ ├── 0389 │ │ │ │ │ ├── img1.png │ │ │ │ │ ├── img2.png │ │ │ │ │ ├── img3.png │ │ ├── tri_trainlist.txt

Case 1: Loading Vid4 dataset for training a VSR model.

dataset = BasicFramesDataset(
    ann_file='meta_info_Vid4_GT.txt',
    metainfo=dict(dataset_type='vid4', task_name='vsr'),
    data_root='data/Vid4',
    data_prefix=dict(img='BIx4', gt='GT'),
    pipeline=[],
    depth=2,
    num_input_frames=5)

Case 2: Loading Vimeo90k dataset for training a VFI model.

dataset = BasicFramesDataset(
    ann_file='tri_trainlist.txt',
    metainfo=dict(dataset_type='vimeo90k', task_name='vfi'),
    data_root='data/vimeo-triplet',
    data_prefix=dict(img='sequences', gt='sequences'),
    pipeline=[],
    depth=2,
    load_frames_list=dict(
        img=['img1.png', 'img3.png'], gt=['img2.png']))
See more details in unittest
tests/test_datasets/test_base_frames_dataset.py

TestFramesDatasets().test_version_1_method()

METAINFO[source]
load_data_list() List[dict][source]

Load data list from folder or annotation file.

Returns

A list of annotation.

Return type

list[dict]

_get_path_list()[source]

Get list of paths from annotation file or folder of dataset.

Returns

A list of paths.

Return type

list[str]

_get_path_list_from_ann()[source]

Get list of paths from annotation file.

Returns

A list of paths.

Return type

list[str]

_get_path_list_from_folder(sub_folder=None, need_ext=True, depth=1)[source]

Get list of paths from folder.

Parameters
  • sub_folder (None | str) – The path of sub_folder. Default: None.

  • need_ext (bool) – Whether need ext. Default: True.

  • depth (int) – Residual depth of path, recursively called to depth == 1. Default: 1

Returns

A list of paths.

Return type

list[str]

_set_seq_lens()[source]

Get sequence lengths.

_get_frames_list(key, folder)[source]

Obtain list of frames.

Parameters
  • key (str) – The key of frames list, e.g. img, gt.

  • folder (str) – Folder of frames.

Returns

The paths list of frames.

Return type

list[str]

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