9b1262acc6
This commit also fixes the Pillow library not being imported correctly, which prevented the script from running at all, and slightly reformats the output.
55 lines
1.7 KiB
Python
Executable file
55 lines
1.7 KiB
Python
Executable file
#!/usr/bin/env python3
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"""
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imgcheck - check a sequence of images for exiguous colors
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usage: imgcheck baseframe imgframe...
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In a sequence of images, treat the first as a baseframe and the rest
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as animation images. Report on colors not present in the baseframe.
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The Python Imaging Library must be available for this tool to work
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"""
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import sys
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try:
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from PIL import Image
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except ImportError:
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print("""Please install the Python Pillow Library to run this script.
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You can download it from https://pypi.python.org/pypi/Pillow
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On Debian and Ubuntu you can also type in a Terminal
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sudo apt-get install python-pil""", file=sys.stderr)
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sys.exit(1)
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# Extract a color table list from the images
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colortables = []
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for filename in sys.argv[1:]:
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img = Image.open(filename).convert("RGB")
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colortable = img.getcolors()
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# getcolors() returns None if an image has more than 256 colors
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if colortable:
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colortables.append([filename, colortable])
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else:
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print("imgcheck: %s has more than 256 colors" % filename)
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# Perform color table subtraction
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# each color value is a (count, pixel) tuple
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# get the pixel datas, which are RGB tuples, and sort them
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basetable = colortables.pop(0)
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basecolors = sorted(map(lambda elem: elem[1], basetable[1]))
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subtracted = []
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for table in colortables:
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exiguous = []
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for (n, rgb) in table[1]:
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if rgb not in basecolors:
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exiguous.append((n, rgb))
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# again, sort according to RGB data
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exiguous.sort(key=lambda elem: elem[1])
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subtracted.append((table[0], exiguous))
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print("Base colors:")
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print(basecolors)
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for (filename, colors) in subtracted:
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print(filename + ":")
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for (n, rgb) in colors:
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print("(%3d, %3d, %3d) * %d" % (rgb[0], rgb[1], rgb[2], n))
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