BGR

Tip

Learn more: https://en.wikipedia.org/wiki/RGB_color_model

Functions

kornia.color.bgr_to_rgb(image)

Convert a BGR image to RGB.

Parameters:

image (Tensor) – BGR Image to be converted to BGR of shape \((*,3,H,W)\).

Return type:

Tensor

Returns:

RGB version of the image with shape of shape \((*,3,H,W)\).

Example

>>> input = torch.rand(2, 3, 4, 5)
>>> output = bgr_to_rgb(input) # 2x3x4x5

kornia.color.bgr_to_rgba(image, alpha_val)

Convert an image from BGR to RGBA.

Parameters:

• image (Tensor) – BGR Image to be converted to RGBA of shape \((*,3,H,W)\).

• alpha_val (Union[float, Tensor]) – A float number for the alpha value or a torch.Tensor of shape \((*,1,H,W)\).

Return type:

Tensor

Returns:

RGBA version of the image with shape \((*,4,H,W)\).

Note

The current functionality is NOT supported by Torchscript.

Example

>>> input = torch.rand(2, 3, 4, 5)
>>> output = bgr_to_rgba(input, 1.) # 2x4x4x5

Modules

class kornia.color.BgrToRgb(*args, **kwargs)

Convert image from BGR to RGB.

The image data is assumed to be in the range of (0, 1).

Returns:

RGB version of the image.

Shape:

• image: \((*, 3, H, W)\)

• output: \((*, 3, H, W)\)

Example

>>> input = torch.rand(2, 3, 4, 5)
>>> rgb = BgrToRgb()
>>> output = rgb(input)  # 2x3x4x5

class kornia.color.BgrToRgba(alpha_val)

Convert an image from BGR to RGBA.

Add an alpha channel to existing RGB image.

Parameters:

alpha_val (Union[float, Tensor]) – A float number for the alpha value or a torch.Tensor of shape \((*,1,H,W)\).

Returns:

RGBA version of the image with shape \((*,4,H,W)\).

Shape:

• image: \((*, 3, H, W)\)

• output: \((*, 4, H, W)\)

Note

The current functionality is NOT supported by Torchscript.

Example

>>> input = torch.rand(2, 3, 4, 5)
>>> rgba = BgrToRgba(1.)
>>> output = rgba(input)  # 2x4x4x5