For RGB to Grayscale conversion, ITU-R 601-2 luma transform is performed which is L = R * 0.2989 + G * 0.5870 + B * 0.1140
transform_rgb_to_grayscale(img)Other unitary_transforms:
transform_adjust_brightness(),
transform_adjust_contrast(),
transform_adjust_gamma(),
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_rotate(),
transform_to_tensor(),
transform_vflip()