Apple-2-SW/ii-pix
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Create data directory before writing to it

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kris 2023-01-31 21:12:42 +00:00
parent 05a3624866
commit 2ab582790c
1 changed files with 12 additions and 2 deletions
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14
precompute_conversion.py
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@ -6,6 +6,8 @@ colours when optimizing the image conversion (since this perceptual
difference corresponds to the Euclidean distance in this colour space)
"""
import os
import colour
import numpy as np
@ -14,7 +16,15 @@ 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)
DATA_DIR = 'data'
def main():
try:
os.mkdir(DATA_DIR, mode=0o755)
except FileExistsError:
pass
print("Precomputing conversion matrix from 24-bit RGB to CAM16UCS colour "
"space")
# Compute matrix of all 24-bit RGB values, normalized to 0..1 range
@ -30,7 +40,7 @@ def main():
rgb24_to_cam16ucs = colour.convert(all_rgb24, "RGB", "CAM16UCS").astype(
np.float32)
del all_rgb24
np.save("data/rgb24_to_cam16ucs.npy", np.ascontiguousarray(
np.save("%s/rgb24_to_cam16ucs.npy" % DATA_DIR, np.ascontiguousarray(
rgb24_to_cam16ucs))
del rgb24_to_cam16ucs
@ -61,7 +71,7 @@ def main():
rgb12_iigs_to_cam16ucs = colour.convert(
rgb12_iigs, "RGB", "CAM16UCS").astype(np.float32)
del rgb12_iigs
np.save("data/rgb12_iigs_to_cam16ucs.npy", np.ascontiguousarray(
np.save("%s/rgb12_iigs_to_cam16ucs.npy" % DATA_DIR, np.ascontiguousarray(
rgb12_iigs_to_cam16ucs))
del rgb12_iigs_to_cam16ucs