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Merge pull request #25 from birgerkarlsson/4-color-tag-support

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Add 4-color display support
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Furrtek
2026-03-08 22:29:02 +01:00
committed by GitHub
parent ad4c942379 3027c9aea5
commit b09951e2b3
1 changed files with 10 additions and 2 deletions
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12
tools_python/img2dm.py
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@@ -14,10 +14,18 @@ def image_convert(image, color_pass):
pixels = []
for row in image:
for rgb in row:
luma = (0.21 * rgb[0] + 0.72 * rgb[1] + 0.07 * rgb[2]) / 255
r, g, b = rgb[0] / 255, rgb[1] / 255, rgb[2] / 255
is_red = r > 0.5 and g < 0.5 and b < 0.5
is_yellow = r > 0.5 and g > 0.5 and b < 0.5
if color_pass:
pixels.append(0 if luma >= 0.1 and luma < 0.9 else 1) # 0 codes color (anything mid grey)
# 0 = red or yellow, 1 = use first block (black/white)
pixels.append(0 if (is_red or is_yellow) else 1)
elif is_red and color_mode:
pixels.append(1) # red: first=1, second=0
elif is_yellow and color_mode:
pixels.append(0) # yellow: first=0, second=0
else:
luma = 0.21 * r + 0.72 * g + 0.07 * b
pixels.append(0 if luma < 0.5 else 1) # 0 codes black
return pixels