Table of Contents
Shortcuts

# FlyingChairs

class torchvision.datasets.FlyingChairs(root: str, split: str = 'train', transforms: Optional[Callable] = None)

  FlyingChairs Dataset for optical flow.

  You will also need to download the FlyingChairs_train_val.txt file from the dataset page.

  The dataset is expected to have the following structure:

      root
          FlyingChairs
              data
                  00001_flow.flo
                  00001_img1.ppm
                  00001_img2.ppm
                  ...
              FlyingChairs_train_val.txt

  Parameters:

    - root (string) – Root directory of the FlyingChairs Dataset.

    - split (string, optional) – The dataset split, either “train” (default) or “val”

    - transforms (callable, optional) – A function/transform that takes in `img1, img2, flow, valid_flow_mask` and returns a transformed version. `valid_flow_mask` is expected for consistency with other datasets which return a built-in valid mask, such as `KittiFlow`.

  Special-members:

  __getitem__(index: int) → Union[Tuple[Image, Image, Optional[ndarray], Optional[ndarray]], Tuple[Image, Image, Optional[ndarray]]]

    Return example at given index.

    Parameters:

      index (int) – The index of the example to retrieve

    Returns:

      A 3-tuple with `(img1, img2, flow)`. The flow is a numpy array of shape (2, H, W) and the images are PIL images. `flow` is None if `split="val"`. If a valid flow mask is generated within the `transforms` parameter, a 4-tuple with `(img1, img2, flow, valid_flow_mask)` is returned.

    Return type:

      tuple

## Docs

Access comprehensive developer documentation for PyTorch

View Docs

## Tutorials

Get in-depth tutorials for beginners and advanced developers

View Tutorials

## Resources

Find development resources and get your questions answered

View Resources

To analyze traffic and optimize your experience, we serve cookies on this site. By clicking or navigating, you agree to allow our usage of cookies. As the current maintainers of this site, Facebook’s Cookies Policy applies. Learn more, including about available controls: Cookies Policy.