RandomRotation

class torchvision.transforms.v2.RandomRotation(degrees: Union[Number, Sequence], interpolation: Union[InterpolationMode, int] = InterpolationMode.NEAREST, expand: bool = False, center: Optional[List[float]] = None, fill: Union[int, float, Sequence[int], Sequence[float], None, Dict[Union[Type, str], Optional[Union[int, float, Sequence[int], Sequence[float]]]]] = 0)

Rotate the input by angle.

If the input is a torch.Tensor or a TVTensor (e.g. Image, Video, BoundingBoxes etc.) it can have arbitrary number of leading batch dimensions. For example, the image can have [..., C, H, W] shape. A bounding box can have [..., 4] shape.

Parameters:

• degrees (sequence or number) – Range of degrees to select from. If degrees is a number instead of sequence like (min, max), the range of degrees will be (-degrees, +degrees).

• interpolation (InterpolationMode, optional) – Desired interpolation enum defined by torchvision.transforms.InterpolationMode. Default is InterpolationMode.NEAREST. If input is Tensor, only InterpolationMode.NEAREST, InterpolationMode.BILINEAR are supported. The corresponding Pillow integer constants, e.g. PIL.Image.BILINEAR are accepted as well.

• expand (bool, optional) – Optional expansion flag. If true, expands the output to make it large enough to hold the entire rotated image. If false or omitted, make the output image the same size as the input image. Note that the expand flag assumes rotation around the center (see note below) and no translation.

• center (sequence, optional) –

  Optional center of rotation, (x, y). Origin is the upper left corner. Default is the center of the image.

  Note

  In theory, setting center has no effect if expand=True, since the image center will become the center of rotation. In practice however, due to numerical precision, this can lead to off-by-one differences of the resulting image size compared to using the image center in the first place. Thus, when setting expand=True, it’s best to leave center=None (default).

• fill (number or tuple or dict, optional) – Pixel fill value used when the padding_mode is constant. Default is 0. If a tuple of length 3, it is used to fill R, G, B channels respectively. Fill value can be also a dictionary mapping data type to the fill value, e.g. fill={tv_tensors.Image: 127, tv_tensors.Mask: 0} where Image will be filled with 127 and Mask will be filled with 0.

Examples using RandomRotation:

Illustration of transforms

Illustration of transforms

static get_params(degrees: List[float]) → float

Get parameters for rotate for a random rotation.

Returns:

angle parameter to be passed to rotate for random rotation.

Return type:

float