Adjust the gamma of an RGB image

Also known as Power Law Transform. Intensities in RGB mode are adjusted based on the following equation: $$ I_{\mbox{out}} = 255 \times \mbox{gain} \times \left (\frac{I_{\mbox{in}}}{255}\right)^{\gamma} $$

transform_adjust_gamma(img, gamma, gain = 1)

Arguments

img

A magick-image, array or torch_tensor.

gamma

(float): Non negative real number, same as \(\gamma\) in the equation. gamma larger than 1 make the shadows darker, while gamma smaller than 1 make dark regions lighter.

gain

(float): The constant multiplier.

Details

See Gamma Correction for more details.

See also

Other unitary_transforms: transform_adjust_brightness(), transform_adjust_contrast(), transform_adjust_hue(), transform_adjust_saturation(), transform_affine(), transform_center_crop(), transform_convert_image_dtype(), transform_crop(), transform_grayscale(), transform_hflip(), transform_linear_transformation(), transform_normalize(), transform_pad(), transform_perspective(), transform_resize(), transform_rgb_to_grayscale(), transform_rotate(), transform_to_tensor(), transform_vflip()