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Kovid Goyal 2016-05-09 19:38:29 +05:30
parent 9dc6fbc6b9
commit e8ea227733
1 changed files with 7 additions and 2 deletions
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src/calibre/utils/img.py
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@ -282,9 +282,14 @@ def quantize(img, max_colors=256, dither=True, palette=''):
default a palette is chosen automatically, if you want to use a fixed default a palette is chosen automatically, if you want to use a fixed
palette, then pass in a list of color names in the `palette` variable. If palette, then pass in a list of color names in the `palette` variable. If
you, specify a palette `max_colors` is ignored. Note that it is possible you, specify a palette `max_colors` is ignored. Note that it is possible
for the actual number of colors used to be less than max_colors. for the actual number of colors used to be less than max_colors. Also, if
the input image is already indexed and has fewer than max_colors, this function
will do nothing.
For example: palette='red green blue #eee' ''' :param max_colors: Max. number of colors in the auto-generated palette. Must be between 2 and 256.
:param dither: Whether to use dithering or not. dithering is almost always a good thing.
:param palette: Use a manually specified palette instead. For example: palette='red green blue #eee'
'''
if imageops is None: if imageops is None:
raise RuntimeError(imageops_err) raise RuntimeError(imageops_err)
img = image_from_data(img) img = image_from_data(img)