class torchvision.transforms.v2.GaussianBlur(kernel_size: Union[int, Sequence[int]], sigma: Union[int, float, Sequence[float]] = (0.1, 2.0))[source]

[BETA] Blurs image with randomly chosen Gaussian blur.


The GausssianBlur transform is in Beta stage, and while we do not expect major breaking changes, some APIs may still change according to user feedback. Please submit any feedback you may have in this issue:, and you can also check out to learn more about the APIs that we suspect might involve future changes.

If the input is a Tensor, it is expected to have […, C, H, W] shape, where … means an arbitrary number of leading dimensions.

  • kernel_size (int or sequence) – Size of the Gaussian kernel.

  • sigma (float or tuple of python:float (min, max)) – Standard deviation to be used for creating kernel to perform blurring. If float, sigma is fixed. If it is tuple of float (min, max), sigma is chosen uniformly at random to lie in the given range.

static get_params(sigma_min: float, sigma_max: float) float[source]

Choose sigma for random gaussian blurring.

  • sigma_min (float) – Minimum standard deviation that can be chosen for blurring kernel.

  • sigma_max (float) – Maximum standard deviation that can be chosen for blurring kernel.


Standard deviation to be passed to calculate kernel for gaussian blurring.

Return type:



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