GaussianBlur

class torchvision.transforms.GaussianBlur(kernel_size, sigma=(0.1, 2.0))

Blurs image with randomly chosen Gaussian blur. If the image is torch Tensor, it is expected to have […, C, H, W] shape, where … means an arbitrary number of leading dimensions.

Parameters:

• 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.

Returns:

Gaussian blurred version of the input image.

Return type:

PIL Image or Tensor

Examples using GaussianBlur:

Illustration of transforms

Illustration of transforms

forward(img: Tensor) → Tensor

Parameters:

img (PIL Image or Tensor) – image to be blurred.

Returns:

Gaussian blurred image

Return type:

PIL Image or Tensor

static get_params(sigma_min: float, sigma_max: float) → float

Choose sigma for random gaussian blurring.

Parameters:

• 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.

Returns:

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

Return type:

float