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Code Issues Releases Wiki Activity

don't autocontrast color content (#1021)

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This commit is contained in:
Alex Xu
2025-07-09 13:59:54 -07:00
committed by GitHub
parent bc98eecae9
commit a79c740387
2 changed files with 16 additions and 10 deletions
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13
kindlecomicconverter/image.py
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@@ -341,16 +341,21 @@ class ComicPage:
image.save(targetPath, 'JPEG', optimize=1, quality=85)
return targetPath
def autocontrastImage(self):
def gammaCorrectImage(self):
gamma = self.opt.gamma
if gamma < 0.1:
gamma = self.gamma
if self.gamma != 1.0 and self.color:
gamma = 1.0
if gamma == 1.0:
self.image = ImageOps.autocontrast(self.image)
pass
else:
self.image = ImageOps.autocontrast(Image.eval(self.image, lambda a: int(255 * (a / 255.) ** gamma)))
self.image = Image.eval(self.image, lambda a: int(255 * (a / 255.) ** gamma))
def autocontrastImage(self):
# autocontrast on non grayscale images has unexpected results
# since it autocontrasts each color channel separately
self.image = ImageOps.autocontrast(self.image)
def convertToGrayscale(self):
self.image = self.image.convert('L')
@@ -358,7 +363,7 @@ class ComicPage:
def quantizeImage(self):
# remove all color pixels from image, since colorCheck() has some tolerance
# quantize with a small number of color pixels in a mostly b/w image can have unexpected results
self.image = self.image.convert("L").convert("RGB")
self.image = self.image.convert("RGB")
palImg = Image.new('P', (1, 1))
palImg.putpalette(self.palette)