Apple-2-SW/ii-pix
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Tidy

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kris 2022-07-18 09:59:01 +01:00
parent 8fd0ec5dc6
commit 1ffb2c9110
1 changed files with 4 additions and 2 deletions
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6
precompute_conversion.py
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@ -10,9 +10,10 @@ import colour
import numpy as np
def srgb_to_linear_array(a: np.ndarray, gamma=2.4) -> np.ndarray:
def srgb_to_linear_rgb_array(a: np.ndarray, gamma=2.4) -> np.ndarray:
return np.where(a <= 0.04045, a / 12.92, ((a + 0.055) / 1.055) ** gamma)
def main():
print("Precomputing conversion matrix from 24-bit RGB to CAM16UCS colour "
"space")
@ -47,7 +48,7 @@ def main():
# //gs RGB values use gamma-corrected Rec.601 RGB colour space. We need to
# convert to Rec.709 RGB as preparation for converting to CAM16UCS. We
# do this via the YCbCr intermediate color model.
rgb12_iigs = np.clip(srgb_to_linear_array(
rgb12_iigs = np.clip(srgb_to_linear_rgb_array(
np.clip(colour.YCbCr_to_RGB(
colour.RGB_to_YCbCr(
all_rgb12, K=colour.WEIGHTS_YCBCR[
@ -62,5 +63,6 @@ def main():
np.save("data/rgb12_iigs_to_cam16ucs.npy", rgb12_iigs_to_cam16ucs)
del rgb12_iigs_to_cam16ucs
if __name__ == "__main__":
main()