mirror of
https://github.com/KrisKennaway/ii-vision.git
synced 2024-12-22 12:29:31 +00:00
52 lines
1.7 KiB
Python
52 lines
1.7 KiB
Python
import colormath.color_objects
|
|
import colormath.color_diff
|
|
import colormath.color_conversions
|
|
import numpy as np
|
|
|
|
from colours import DHGRColours
|
|
|
|
|
|
def rgb(r, g, b):
|
|
return colormath.color_objects.sRGBColor(r, g, b, is_upscaled=True)
|
|
|
|
|
|
# Palette RGB values taken from BMP2DHGR's default NTSC palette
|
|
# TODO: support other palettes as well, e.g. //gs RGB
|
|
palette = {
|
|
DHGRColours.BLACK: rgb(0, 0, 0),
|
|
DHGRColours.MAGENTA: rgb(148, 12, 125),
|
|
DHGRColours.BROWN: rgb(99, 77, 0),
|
|
DHGRColours.ORANGE: rgb(249, 86, 29),
|
|
DHGRColours.DARK_GREEN: rgb(51, 111, 0),
|
|
DHGRColours.GREY1: rgb(126, 126, 126),
|
|
DHGRColours.GREEN: rgb(67, 200, 0),
|
|
DHGRColours.YELLOW: rgb(221, 206, 23),
|
|
DHGRColours.DARK_BLUE: rgb(32, 54, 212),
|
|
DHGRColours.VIOLET: rgb(188, 55, 255),
|
|
DHGRColours.GREY2: rgb(126, 126, 126),
|
|
DHGRColours.PINK: rgb(255, 129, 236),
|
|
DHGRColours.MED_BLUE: rgb(7, 168, 225),
|
|
DHGRColours.LIGHT_BLUE: rgb(158, 172, 255),
|
|
DHGRColours.AQUA: rgb(93, 248, 133),
|
|
DHGRColours.WHITE: rgb(255, 255, 255)
|
|
}
|
|
|
|
|
|
def compute_diff_matrix():
|
|
# Compute matrix of CIE2000 delta values for this palette, representing
|
|
# perceptual distance between colours.
|
|
dm = np.ndarray(shape=(16, 16), dtype=np.int)
|
|
|
|
for colour1, a in palette.items():
|
|
alab = colormath.color_conversions.convert_color(
|
|
a, colormath.color_objects.LabColor)
|
|
for colour2, b in palette.items():
|
|
blab = colormath.color_conversions.convert_color(
|
|
b, colormath.color_objects.LabColor)
|
|
dm[colour1.value, colour2.value] = int(
|
|
colormath.color_diff.delta_e_cie2000(alab, blab))
|
|
return dm
|
|
|
|
|
|
diff_matrix = compute_diff_matrix()
|