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Code Issues Releases Wiki Activity

make webtoon faster/more accurate (#1117)

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This commit is contained in:
Alex Xu
2025-10-16 11:44:40 -07:00
committed by GitHub
parent 3470d01367
commit e56612228c
1 changed files with 12 additions and 3 deletions
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15
kindlecomicconverter/comic2panel.py
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@@ -23,7 +23,9 @@ import sys
from argparse import ArgumentParser from argparse import ArgumentParser
from shutil import rmtree, copytree, move from shutil import rmtree, copytree, move
from multiprocessing import Pool from multiprocessing import Pool
from time import perf_counter
from PIL import Image, ImageChops, ImageOps, ImageDraw, ImageFilter from PIL import Image, ImageChops, ImageOps, ImageDraw, ImageFilter
from PIL.Image import Dither
from .shared import dot_clean, getImageFileName, walkLevel, walkSort, sanitizeTrace from .shared import dot_clean, getImageFileName, walkLevel, walkSort, sanitizeTrace
@@ -101,9 +103,16 @@ def splitImage(work):
Image.warnings.simplefilter('error', Image.DecompressionBombWarning) Image.warnings.simplefilter('error', Image.DecompressionBombWarning)
Image.MAX_IMAGE_PIXELS = 1000000000 Image.MAX_IMAGE_PIXELS = 1000000000
imgOrg = Image.open(filePath).convert('RGB') imgOrg = Image.open(filePath).convert('RGB')
# I experimented with setting dither=None, but got very poor results start = perf_counter()
# The default dither is good imgEdges = Image.open(filePath).convert('L').filter(ImageFilter.FIND_EDGES)
imgProcess = Image.open(filePath).filter(ImageFilter.FIND_EDGES).convert('1') end = perf_counter()
print(f"webtoon: imgEdges {end - start} sec")
start = perf_counter()
# the threshold of 8 is conservative. 0-6 are definitely not edges
imgProcess = imgEdges.point(lambda p: 255 if p > 8 else 0).convert('1', dither=Dither.NONE)
end = perf_counter()
print(f"webtoon: imgProcess {end - start} sec")
widthImg, heightImg = imgOrg.size widthImg, heightImg = imgOrg.size
if heightImg > opt.height: if heightImg > opt.height:
if opt.debug: if opt.debug: