Color conversion

Conversions between color spaces, on float image tensors of shape (*, C, H, W). Every conversion except rgb_to_y() exists as a function and as an nn.Module; each page below documents one color scheme.

• grayscale
• rgb
• bgr
• rgba
• linear rgb
• hls
• hsv
• lab
• luv
• xyz
• ycbcr
• yuv
• bayer raw

All functions

rgb_to_grayscale	Convert an RGB image to grayscale.
bgr_to_grayscale	Convert a BGR image to grayscale.
grayscale_to_rgb	Convert a grayscale image to RGB.
rgb_to_bgr	Convert an RGB image to BGR.
bgr_to_rgb	Convert a BGR image to RGB.
rgb_to_rgb255	Scale an RGB image from [0, 1] to [0, 255].
rgb255_to_rgb	Scale an RGB image from [0, 255] to [0, 1].
rgb255_to_normals	Map an RGB image in [0, 255] to unit surface normals.
normals_to_rgb255	Map surface normals in [-1, 1] to RGB in [0, 255].
rgb_to_rgba	Convert an RGB image to RGBA by appending an alpha channel.
bgr_to_rgba	Convert a BGR image to RGBA, with the color channels in RGB order.
rgba_to_rgb	Convert an RGBA image to RGB by compositing it over a background.
rgba_to_bgr	Convert an RGBA image to BGR by compositing it over white.
rgb_to_linear_rgb	Convert an sRGB image to linear RGB.
linear_rgb_to_rgb	Convert a linear RGB image to sRGB.
rgb_to_hls	Convert an RGB image to HLS.
hls_to_rgb	Convert an HLS image to RGB.
rgb_to_hsv	Convert an image from RGB to HSV.
hsv_to_rgb	Convert an image from HSV to RGB.
rgb_to_lab	Convert an sRGB image to Lab.
lab_to_rgb	Convert a Lab image to sRGB.
rgb_to_luv	Convert an sRGB image to Luv.
luv_to_rgb	Convert a Luv image to sRGB.
rgb_to_xyz	Convert a linear RGB image to XYZ.
xyz_to_rgb	Convert an XYZ image to linear RGB.
rgb_to_ycbcr	Convert an RGB image to full-range YCbCr.
rgb_to_y	Convert an RGB image to the Y channel of YCbCr.
ycbcr_to_rgb	Convert a full-range YCbCr image to RGB.
rgb_to_yuv	Convert an RGB image to YUV.
yuv_to_rgb	Convert a YUV image to RGB.
rgb_to_yuv420	Convert an RGB image to YUV 4:2:0 planes.
yuv420_to_rgb	Convert YUV 4:2:0 planes to RGB.
rgb_to_yuv422	Convert an RGB image to YUV 4:2:2 planes.
yuv422_to_rgb	Convert YUV 4:2:2 planes to RGB.
rgb_to_raw	Sample an RGB image into a Bayer raw image.
raw_to_rgb	Demosaic a Bayer raw image to RGB.
raw_to_rgb_2x2_downscaled	Convert a Bayer raw image to RGB at half the height and width.