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Code Issues Releases Wiki Activity

Added --croppingminimum option to set a cropping minimum area ratio

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Closes #342
This commit is contained in:
Frédéric Brière
2020-02-28 22:44:23 -05:00
committed by darodi
parent b225de7b97
commit 16e275bb1f
2 changed files with 16 additions and 6 deletions
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6
kindlecomicconverter/comic2ebook.py
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@@ -588,9 +588,9 @@ def imgFileProcessing(work):
for i in workImg.payload:
img = image.ComicPage(opt, *i)
if opt.cropping == 2 and not opt.webtoon:
img.cropPageNumber(opt.croppingp)
img.cropPageNumber(opt.croppingp, opt.croppingm)
if opt.cropping > 0 and not opt.webtoon:
img.cropMargin(opt.croppingp)
img.cropMargin(opt.croppingp, opt.croppingm)
img.autocontrastImage()
img.resizeImage()
if opt.forcepng and not opt.forcecolor:
@@ -982,6 +982,8 @@ def makeParser():
help="Set cropping mode. 0: Disabled 1: Margins 2: Margins + page numbers [Default=2]")
processingOptions.add_option("--cp", "--croppingpower", type="float", dest="croppingp", default="1.0",
help="Set cropping power [Default=1.0]")
processingOptions.add_option("--cm", "--croppingminimum", type="float", dest="croppingm", default="0.0",
help="Set cropping minimum area ratio [Default=0.0]")
processingOptions.add_option("--blackborders", action="store_true", dest="black_borders", default=False,
help="Disable autodetection and force black borders")
processingOptions.add_option("--whiteborders", action="store_true", dest="white_borders", default=False,

16
kindlecomicconverter/image.py
View File

@@ -350,7 +350,13 @@ class ComicPage:
)
return bbox
def cropPageNumber(self, power):
def maybeCrop(self, box, minimum):
box_area = (box[2] - box[0]) * (box[3] - box[1])
image_area = self.image.size[0] * self.image.size[1]
if (box_area / image_area) >= minimum:
self.image = self.image.crop(box)
def cropPageNumber(self, power, minimum):
if self.fill != 'white':
tmptmg = self.image.convert(mode='L')
else:
@@ -359,16 +365,18 @@ class ComicPage:
tmptmg = tmptmg.filter(ImageFilter.MinFilter(size=3))
tmptmg = tmptmg.filter(ImageFilter.GaussianBlur(radius=5))
tmptmg = tmptmg.point(lambda x: (x >= 16 * power) and x)
self.image = self.image.crop(tmptmg.getbbox()) if tmptmg.getbbox() else self.image
if tmptmg.getbbox():
self.maybeCrop(tmptmg.getbbox(), minimum)
def cropMargin(self, power):
def cropMargin(self, power, minimum):
if self.fill != 'white':
tmptmg = self.image.convert(mode='L')
else:
tmptmg = ImageOps.invert(self.image.convert(mode='L'))
tmptmg = tmptmg.filter(ImageFilter.GaussianBlur(radius=3))
tmptmg = tmptmg.point(lambda x: (x >= 16 * power) and x)
self.image = self.image.crop(self.getBoundingBox(tmptmg)) if tmptmg.getbbox() else self.image
if tmptmg.getbbox():
self.maybeCrop(self.getBoundingBox(tmptmg), minimum)
class Cover: