multicolorfits.colorize_image_direct_rgb#

multicolorfits.colorize_image_direct_rgb(grey_rgb_image, hex_color, brightness_factor=1.0, gammacorr_color=1)[source]#

Tint a greyscale RGB cube by multiplying channels with a solid hex color.

Equivalent to the HSV path in colorize_image() for greyscale inputs (hsv_to_rgb(h, s, V) is linear in V, so tinting reduces to intensity * (color_rgb ** gammacorr_color)), but avoids a full RGB↔HSV round-trip. Used automatically by colorize_image() for hex colors.

Parameters:

  • grey_rgb_image (numpy.ndarray) – Greyscale RGB image (R = G = B), typically from to_grey_rgb().

  • hex_color (str) – Hex color such as '#FF0000'.

  • brightness_factor (float) – Multiplier on the tinted result (analogous to HSV value).

  • gammacorr_color (float) – Gamma applied to the color itself (matches colorize_image). Use 1 for no color gamma.

Returns:

numpy.ndarray – Colorized RGB image in [0, 1], same shape as the input.