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kcc/kindlecomicconverter/image.py
X5Games / Neyney10 2f703ef92c Inter-panel cropping method. (#810) 
* Inter-panel cropping method.

* 1. Save interpanelcrop option.
2. Update readme with the the new interpanelcrop argument.
3. Add a tooltip to the inter-panel crop box.
2025-01-27 13:44:23 -08:00

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# -*- coding: utf-8 -*-
#
# Copyright (C) 2010 Alex Yatskov
# Copyright (C) 2011 Stanislav (proDOOMman) Kosolapov <prodoomman@gmail.com>
# Copyright (c) 2016 Alberto Planas <aplanas@gmail.com>
# Copyright (c) 2012-2014 Ciro Mattia Gonano <ciromattia@gmail.com>
# Copyright (c) 2013-2019 Pawel Jastrzebski <pawelj@iosphe.re>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import io
import os
import mozjpeg_lossless_optimization
from PIL import Image, ImageOps, ImageStat, ImageChops, ImageFilter
from .shared import md5Checksum
from .page_number_crop_alg import get_bbox_crop_margin_page_number, get_bbox_crop_margin
from .inter_panel_crop_alg import crop_empty_inter_panel
AUTO_CROP_THRESHOLD = 0.015
class ProfileData:
def __init__(self):
pass
Palette4 = [
0x00, 0x00, 0x00,
0x55, 0x55, 0x55,
0xaa, 0xaa, 0xaa,
0xff, 0xff, 0xff
]
Palette15 = [
0x00, 0x00, 0x00,
0x11, 0x11, 0x11,
0x22, 0x22, 0x22,
0x33, 0x33, 0x33,
0x44, 0x44, 0x44,
0x55, 0x55, 0x55,
0x66, 0x66, 0x66,
0x77, 0x77, 0x77,
0x88, 0x88, 0x88,
0x99, 0x99, 0x99,
0xaa, 0xaa, 0xaa,
0xbb, 0xbb, 0xbb,
0xcc, 0xcc, 0xcc,
0xdd, 0xdd, 0xdd,
0xff, 0xff, 0xff,
]
Palette16 = [
0x00, 0x00, 0x00,
0x11, 0x11, 0x11,
0x22, 0x22, 0x22,
0x33, 0x33, 0x33,
0x44, 0x44, 0x44,
0x55, 0x55, 0x55,
0x66, 0x66, 0x66,
0x77, 0x77, 0x77,
0x88, 0x88, 0x88,
0x99, 0x99, 0x99,
0xaa, 0xaa, 0xaa,
0xbb, 0xbb, 0xbb,
0xcc, 0xcc, 0xcc,
0xdd, 0xdd, 0xdd,
0xee, 0xee, 0xee,
0xff, 0xff, 0xff,
]
PalleteNull = [
]
ProfilesKindleEBOK = {
'K1': ("Kindle 1", (600, 670), Palette4, 1.8),
'K2': ("Kindle 2", (600, 670), Palette15, 1.8),
'KDX': ("Kindle DX/DXG", (824, 1000), Palette16, 1.8),
'K34': ("Kindle Keyboard/Touch", (600, 800), Palette16, 1.8),
'K578': ("Kindle", (600, 800), Palette16, 1.8),
'KPW': ("Kindle Paperwhite 1/2", (758, 1024), Palette16, 1.8),
'KV': ("Kindle Paperwhite 3/4/Voyage/Oasis", (1072, 1448), Palette16, 1.8),
}
ProfilesKindlePDOC = {
'KO': ("Kindle Oasis 2/3/Paperwhite 12/Colorsoft 12", (1264, 1680), Palette16, 1.8),
'K11': ("Kindle 11", (1072, 1448), Palette16, 1.8),
'KPW5': ("Kindle Paperwhite 5/Signature Edition", (1236, 1648), Palette16, 1.8),
'KS': ("Kindle Scribe", (1860, 2480), Palette16, 1.8),
}
ProfilesKindle = {
**ProfilesKindleEBOK,
**ProfilesKindlePDOC
}
ProfilesKobo = {
'KoMT': ("Kobo Mini/Touch", (600, 800), Palette16, 1.8),
'KoG': ("Kobo Glo", (768, 1024), Palette16, 1.8),
'KoGHD': ("Kobo Glo HD", (1072, 1448), Palette16, 1.8),
'KoA': ("Kobo Aura", (758, 1024), Palette16, 1.8),
'KoAHD': ("Kobo Aura HD", (1080, 1440), Palette16, 1.8),
'KoAH2O': ("Kobo Aura H2O", (1080, 1430), Palette16, 1.8),
'KoAO': ("Kobo Aura ONE", (1404, 1872), Palette16, 1.8),
'KoN': ("Kobo Nia", (758, 1024), Palette16, 1.8),
'KoC': ("Kobo Clara HD/Kobo Clara 2E", (1072, 1448), Palette16, 1.8),
'KoCC': ("Kobo Clara Colour", (1072, 1448), Palette16, 1.8),
'KoL': ("Kobo Libra H2O/Kobo Libra 2", (1264, 1680), Palette16, 1.8),
'KoLC': ("Kobo Libra Colour", (1264, 1680), Palette16, 1.8),
'KoF': ("Kobo Forma", (1440, 1920), Palette16, 1.8),
'KoS': ("Kobo Sage", (1440, 1920), Palette16, 1.8),
'KoE': ("Kobo Elipsa", (1404, 1872), Palette16, 1.8),
}
ProfilesRemarkable = {
'Rmk1': ("reMarkable 1", (1404, 1872), Palette16, 1.8),
'Rmk2': ("reMarkable 2", (1404, 1872), Palette16, 1.8),
'RmkPP': ("reMarkable Paper Pro", (1620, 2160), Palette16, 1.8),
}
Profiles = {
**ProfilesKindle,
**ProfilesKobo,
**ProfilesRemarkable,
'OTHER': ("Other", (0, 0), Palette16, 1.8),
}
class ComicPageParser:
def __init__(self, source, options):
Image.MAX_IMAGE_PIXELS = int(2048 * 2048 * 2048 // 4 // 3)
self.opt = options
self.source = source
self.size = self.opt.profileData[1]
self.payload = []
self.image = Image.open(os.path.join(source[0], source[1])).convert('RGB')
self.color = self.colorCheck()
self.fill = self.fillCheck()
# backwards compatibility for Pillow >9.1.0
if not hasattr(Image, 'Resampling'):
Image.Resampling = Image
self.splitCheck()
def getImageHistogram(self, image):
histogram = image.histogram()
if histogram[0] == 0:
return -1
elif histogram[255] == 0:
return 1
else:
return 0
def splitCheck(self):
width, height = self.image.size
dstwidth, dstheight = self.size
if self.opt.maximizestrips:
leftbox = (0, 0, int(width / 2), height)
rightbox = (int(width / 2), 0, width, height)
if self.opt.righttoleft:
pageone = self.image.crop(rightbox)
pagetwo = self.image.crop(leftbox)
else:
pageone = self.image.crop(leftbox)
pagetwo = self.image.crop(rightbox)
new_image = Image.new("RGB", (int(width / 2), int(height*2)))
new_image.paste(pageone, (0, 0))
new_image.paste(pagetwo, (0, height))
self.payload.append(['N', self.source, new_image, self.color, self.fill])
elif (width > height) != (dstwidth > dstheight) and width <= dstheight and height <= dstwidth \
and not self.opt.webtoon and self.opt.splitter == 1:
spread = self.image
if not self.opt.norotate:
spread = spread.rotate(90, Image.Resampling.BICUBIC, True)
self.payload.append(['R', self.source, spread, self.color, self.fill])
elif (width > height) != (dstwidth > dstheight) and not self.opt.webtoon:
if self.opt.splitter != 1:
if width > height:
leftbox = (0, 0, int(width / 2), height)
rightbox = (int(width / 2), 0, width, height)
else:
leftbox = (0, 0, width, int(height / 2))
rightbox = (0, int(height / 2), width, height)
if self.opt.righttoleft:
pageone = self.image.crop(rightbox)
pagetwo = self.image.crop(leftbox)
else:
pageone = self.image.crop(leftbox)
pagetwo = self.image.crop(rightbox)
self.payload.append(['S1', self.source, pageone, self.color, self.fill])
self.payload.append(['S2', self.source, pagetwo, self.color, self.fill])
if self.opt.splitter > 0:
spread = self.image
if not self.opt.norotate:
spread = spread.rotate(90, Image.Resampling.BICUBIC, True)
self.payload.append(['R', self.source, spread,
self.color, self.fill])
else:
self.payload.append(['N', self.source, self.image, self.color, self.fill])
def colorCheck(self):
if self.opt.webtoon:
return True
else:
img = self.image.copy()
bands = img.getbands()
if bands == ('R', 'G', 'B') or bands == ('R', 'G', 'B', 'A'):
thumb = img.resize((40, 40))
SSE, bias = 0, [0, 0, 0]
bias = ImageStat.Stat(thumb).mean[:3]
bias = [b - sum(bias) / 3 for b in bias]
for pixel in thumb.getdata():
mu = sum(pixel) / 3
SSE += sum((pixel[i] - mu - bias[i]) * (pixel[i] - mu - bias[i]) for i in [0, 1, 2])
MSE = float(SSE) / (40 * 40)
if MSE > 22:
return True
else:
return False
else:
return False
def fillCheck(self):
if self.opt.bordersColor:
return self.opt.bordersColor
else:
bw = self.image.convert('L').point(lambda x: 0 if x < 128 else 255, '1')
imageBoxA = bw.getbbox()
imageBoxB = ImageChops.invert(bw).getbbox()
if imageBoxA is None or imageBoxB is None:
surfaceB, surfaceW = 0, 0
diff = 0
else:
surfaceB = (imageBoxA[2] - imageBoxA[0]) * (imageBoxA[3] - imageBoxA[1])
surfaceW = (imageBoxB[2] - imageBoxB[0]) * (imageBoxB[3] - imageBoxB[1])
diff = ((max(surfaceB, surfaceW) - min(surfaceB, surfaceW)) / min(surfaceB, surfaceW)) * 100
if diff > 0.5:
if surfaceW < surfaceB:
return 'white'
elif surfaceW > surfaceB:
return 'black'
else:
fill = 0
startY = 0
while startY < bw.size[1]:
if startY + 5 > bw.size[1]:
startY = bw.size[1] - 5
fill += self.getImageHistogram(bw.crop((0, startY, bw.size[0], startY + 5)))
startY += 5
startX = 0
while startX < bw.size[0]:
if startX + 5 > bw.size[0]:
startX = bw.size[0] - 5
fill += self.getImageHistogram(bw.crop((startX, 0, startX + 5, bw.size[1])))
startX += 5
if fill > 0:
return 'black'
else:
return 'white'
class ComicPage:
def __init__(self, options, mode, path, image, color, fill):
self.opt = options
_, self.size, self.palette, self.gamma = self.opt.profileData
if self.opt.hq:
self.size = (int(self.size[0] * 1.5), int(self.size[1] * 1.5))
self.kindle_scribe_azw3 = (options.profile == 'KS') and (options.format in ('MOBI', 'EPUB'))
self.image = image
self.color = color
self.fill = fill
self.rotated = False
self.orgPath = os.path.join(path[0], path[1])
if 'N' in mode:
self.targetPath = os.path.join(path[0], os.path.splitext(path[1])[0]) + '-KCC'
elif 'R' in mode:
self.targetPath = os.path.join(path[0], os.path.splitext(path[1])[0]) + '-KCC-A'
self.rotated = True
elif 'S1' in mode:
self.targetPath = os.path.join(path[0], os.path.splitext(path[1])[0]) + '-KCC-B'
elif 'S2' in mode:
self.targetPath = os.path.join(path[0], os.path.splitext(path[1])[0]) + '-KCC-C'
# backwards compatibility for Pillow >9.1.0
if not hasattr(Image, 'Resampling'):
Image.Resampling = Image
def saveToDir(self):
try:
flags = []
if not self.opt.forcecolor and not self.opt.forcepng:
self.image = self.image.convert('L')
if self.rotated:
flags.append('Rotated')
if self.fill != 'white':
flags.append('BlackBackground')
if self.opt.forcepng:
self.image.info["transparency"] = None
self.targetPath += '.png'
self.image.save(self.targetPath, 'PNG', optimize=1)
else:
self.targetPath += '.jpg'
if self.opt.mozjpeg:
with io.BytesIO() as output:
self.image.save(output, format="JPEG", optimize=1, quality=85)
input_jpeg_bytes = output.getvalue()
output_jpeg_bytes = mozjpeg_lossless_optimization.optimize(input_jpeg_bytes)
with open(self.targetPath, "wb") as output_jpeg_file:
output_jpeg_file.write(output_jpeg_bytes)
else:
self.image.save(self.targetPath, 'JPEG', optimize=1, quality=85)
return [md5Checksum(self.targetPath), flags, self.orgPath]
except IOError as err:
raise RuntimeError('Cannot save image. ' + str(err))
def autocontrastImage(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)
else:
self.image = ImageOps.autocontrast(Image.eval(self.image, lambda a: int(255 * (a / 255.) ** gamma)))
def quantizeImage(self):
colors = len(self.palette) // 3
if colors < 256:
self.palette += self.palette[:3] * (256 - colors)
palImg = Image.new('P', (1, 1))
palImg.putpalette(self.palette)
self.image = self.image.convert('L')
self.image = self.image.convert('RGB')
# Quantize is deprecated but new function call it internally anyway...
self.image = self.image.quantize(palette=palImg)
def resizeImage(self):
# kindle scribe conversion to mobi is limited in resolution by kindlegen, same with send to kindle and epub
if self.kindle_scribe_azw3:
self.size = (1440, 1920)
ratio_device = float(self.size[1]) / float(self.size[0])
ratio_image = float(self.image.size[1]) / float(self.image.size[0])
method = self.resize_method()
if self.opt.stretch:
self.image = self.image.resize(self.size, method)
elif method == Image.Resampling.BICUBIC and not self.opt.upscale:
if self.opt.format == 'CBZ' or self.opt.kfx:
borderw = int((self.size[0] - self.image.size[0]) / 2)
borderh = int((self.size[1] - self.image.size[1]) / 2)
self.image = ImageOps.expand(self.image, border=(borderw, borderh), fill=self.fill)
if self.image.size[0] != self.size[0] or self.image.size[1] != self.size[1]:
self.image = ImageOps.fit(self.image, self.size, method=method)
else: # if image bigger than device resolution or smaller with upscaling
if abs(ratio_image - ratio_device) < AUTO_CROP_THRESHOLD:
self.image = ImageOps.fit(self.image, self.size, method=method)
elif self.opt.format == 'CBZ' or self.opt.kfx:
self.image = ImageOps.pad(self.image, self.size, method=method, color=self.fill)
else:
if self.kindle_scribe_azw3:
self.size = (1860, 1920)
self.image = ImageOps.contain(self.image, self.size, method=method)
def resize_method(self):
if self.image.size[0] <= self.size[0] and self.image.size[1] <= self.size[1]:
return Image.Resampling.BICUBIC
else:
return Image.Resampling.LANCZOS
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):
bbox = get_bbox_crop_margin_page_number(self.image, power, self.fill)
if bbox:
self.maybeCrop(bbox, minimum)
def cropMargin(self, power, minimum):
bbox = get_bbox_crop_margin(self.image, power, self.fill)
if bbox:
self.maybeCrop(bbox, minimum)
def cropInterPanelEmptySections(self, direction):
self.image = crop_empty_inter_panel(self.image, direction, background_color=self.fill)
class Cover:
def __init__(self, source, target, opt, tomeid):
self.options = opt
self.source = source
self.target = target
if tomeid == 0:
self.tomeid = 1
else:
self.tomeid = tomeid
self.image = Image.open(source)
# backwards compatibility for Pillow >9.1.0
if not hasattr(Image, 'Resampling'):
Image.Resampling = Image
self.process()
def process(self):
self.image = self.image.convert('RGB')
self.image = ImageOps.autocontrast(self.image)
if not self.options.forcecolor:
self.image = self.image.convert('L')
self.image.thumbnail(self.options.profileData[1], Image.Resampling.LANCZOS)
self.save()
def save(self):
try:
self.image.save(self.target, "JPEG", optimize=1, quality=85)
except IOError:
raise RuntimeError('Failed to save cover.')
def saveToKindle(self, kindle, asin):
self.image = self.image.resize((300, 470), Image.Resampling.LANCZOS)
try:
self.image.save(os.path.join(kindle.path.split('documents')[0], 'system', 'thumbnails',
'thumbnail_' + asin + '_EBOK_portrait.jpg'), 'JPEG', optimize=1, quality=85)
except IOError:
raise RuntimeError('Failed to upload cover.')
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