Exemple #1
0
 def quantize(self,
              number_colors,
              colorspace='RGBColorspace',
              treedepth=0,
              dither=True,
              measure_error=False):
     self.img = quantize_image(self.img,
                               max_colors=number_colors,
                               dither=dither)
Exemple #2
0
    def process_pages(self):
        from calibre.utils.img import (
            image_to_data, rotate_image, remove_borders_from_image, normalize_image,
            add_borders_to_image, resize_image, gaussian_sharpen_image, grayscale_image,
            despeckle_image, quantize_image
        )
        for i, img in enumerate(self.pages):
            if self.rotate:
                img = rotate_image(img, -90)

            if not self.opts.disable_trim:
                img = remove_borders_from_image(img)

            # Do the Photoshop "Auto Levels" equivalent
            if not self.opts.dont_normalize:
                img = normalize_image(img)
            sizex, sizey = img.width(), img.height()

            SCRWIDTH, SCRHEIGHT = self.opts.output_profile.comic_screen_size

            try:
                if self.opts.comic_image_size:
                    SCRWIDTH, SCRHEIGHT = map(int, [x.strip() for x in
                        self.opts.comic_image_size.split('x')])
            except:
                pass  # Ignore

            if self.opts.keep_aspect_ratio:
                # Preserve the aspect ratio by adding border
                aspect = float(sizex) / float(sizey)
                if aspect <= (float(SCRWIDTH) / float(SCRHEIGHT)):
                    newsizey = SCRHEIGHT
                    newsizex = int(newsizey * aspect)
                    deltax = (SCRWIDTH - newsizex) / 2
                    deltay = 0
                else:
                    newsizex = SCRWIDTH
                    newsizey = int(newsizex / aspect)
                    deltax = 0
                    deltay = (SCRHEIGHT - newsizey) / 2
                if newsizex < MAX_SCREEN_SIZE and newsizey < MAX_SCREEN_SIZE:
                    # Too large and resizing fails, so better
                    # to leave it as original size
                    img = resize_image(img, newsizex, newsizey)
                    img = add_borders_to_image(img, left=deltax, right=deltax, top=deltay, bottom=deltay)
            elif self.opts.wide:
                # Keep aspect and Use device height as scaled image width so landscape mode is clean
                aspect = float(sizex) / float(sizey)
                screen_aspect = float(SCRWIDTH) / float(SCRHEIGHT)
                # Get dimensions of the landscape mode screen
                # Add 25px back to height for the battery bar.
                wscreenx = SCRHEIGHT + 25
                wscreeny = int(wscreenx / screen_aspect)
                if aspect <= screen_aspect:
                    newsizey = wscreeny
                    newsizex = int(newsizey * aspect)
                    deltax = (wscreenx - newsizex) / 2
                    deltay = 0
                else:
                    newsizex = wscreenx
                    newsizey = int(newsizex / aspect)
                    deltax = 0
                    deltay = (wscreeny - newsizey) / 2
                if newsizex < MAX_SCREEN_SIZE and newsizey < MAX_SCREEN_SIZE:
                    # Too large and resizing fails, so better
                    # to leave it as original size
                    img = resize_image(img, newsizex, newsizey)
                    img = add_borders_to_image(img, left=deltax, right=deltax, top=deltay, bottom=deltay)
            else:
                if SCRWIDTH < MAX_SCREEN_SIZE and SCRHEIGHT < MAX_SCREEN_SIZE:
                    img = resize_image(img, SCRWIDTH, SCRHEIGHT)

            if not self.opts.dont_sharpen:
                img = gaussian_sharpen_image(img, 0.0, 1.0)

            if not self.opts.dont_grayscale:
                img = grayscale_image(img)

            if self.opts.despeckle:
                img = despeckle_image(img)

            if self.opts.output_format.lower() == 'png' and self.opts.colors:
                img = quantize_image(img, max_colors=min(256, self.opts.colors))
            dest = '%d_%d.%s'%(self.num, i, self.opts.output_format)
            dest = os.path.join(self.dest, dest)
            with lopen(dest, 'wb') as f:
                f.write(image_to_data(img, fmt=self.opts.output_format))
            self.append(dest)
Exemple #3
0
 def type(self, t):
     if t == 'GrayscaleType':
         self.img = grayscale_image(self.img)
     elif t == 'PaletteType':
         self.img = quantize_image(self.img)
Exemple #4
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 def quantize(self, number_colors, colorspace='RGBColorspace', treedepth=0, dither=True, measure_error=False):
     self.img = quantize_image(self.img, max_colors=number_colors, dither=dither)
Exemple #5
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 def type(self, t):
     if t == 'GrayscaleType':
         self.img = grayscale_image(self.img)
     elif t == 'PaletteType':
         self.img = quantize_image(self.img)
Exemple #6
0
    def process_pages(self):
        from calibre.utils.img import (image_to_data, rotate_image,
                                       remove_borders_from_image,
                                       normalize_image, add_borders_to_image,
                                       resize_image, gaussian_sharpen_image,
                                       grayscale_image, despeckle_image,
                                       quantize_image)
        for i, img in enumerate(self.pages):
            if self.rotate:
                img = rotate_image(img, -90)

            if not self.opts.disable_trim:
                img = remove_borders_from_image(img)

            # Do the Photoshop "Auto Levels" equivalent
            if not self.opts.dont_normalize:
                img = normalize_image(img)
            sizex, sizey = img.width(), img.height()

            SCRWIDTH, SCRHEIGHT = self.opts.output_profile.comic_screen_size

            try:
                if self.opts.comic_image_size:
                    SCRWIDTH, SCRHEIGHT = map(int, [
                        x.strip()
                        for x in self.opts.comic_image_size.split('x')
                    ])
            except:
                pass  # Ignore

            if self.opts.keep_aspect_ratio:
                # Preserve the aspect ratio by adding border
                aspect = float(sizex) / float(sizey)
                if aspect <= (float(SCRWIDTH) / float(SCRHEIGHT)):
                    newsizey = SCRHEIGHT
                    newsizex = int(newsizey * aspect)
                    deltax = (SCRWIDTH - newsizex) // 2
                    deltay = 0
                else:
                    newsizex = SCRWIDTH
                    newsizey = int(newsizex // aspect)
                    deltax = 0
                    deltay = (SCRHEIGHT - newsizey) // 2
                if newsizex < MAX_SCREEN_SIZE and newsizey < MAX_SCREEN_SIZE:
                    # Too large and resizing fails, so better
                    # to leave it as original size
                    img = resize_image(img, newsizex, newsizey)
                    img = add_borders_to_image(img,
                                               left=deltax,
                                               right=deltax,
                                               top=deltay,
                                               bottom=deltay)
            elif self.opts.wide:
                # Keep aspect and Use device height as scaled image width so landscape mode is clean
                aspect = float(sizex) / float(sizey)
                screen_aspect = float(SCRWIDTH) / float(SCRHEIGHT)
                # Get dimensions of the landscape mode screen
                # Add 25px back to height for the battery bar.
                wscreenx = SCRHEIGHT + 25
                wscreeny = int(wscreenx // screen_aspect)
                if aspect <= screen_aspect:
                    newsizey = wscreeny
                    newsizex = int(newsizey * aspect)
                    deltax = (wscreenx - newsizex) // 2
                    deltay = 0
                else:
                    newsizex = wscreenx
                    newsizey = int(newsizex // aspect)
                    deltax = 0
                    deltay = (wscreeny - newsizey) // 2
                if newsizex < MAX_SCREEN_SIZE and newsizey < MAX_SCREEN_SIZE:
                    # Too large and resizing fails, so better
                    # to leave it as original size
                    img = resize_image(img, newsizex, newsizey)
                    img = add_borders_to_image(img,
                                               left=deltax,
                                               right=deltax,
                                               top=deltay,
                                               bottom=deltay)
            else:
                if SCRWIDTH < MAX_SCREEN_SIZE and SCRHEIGHT < MAX_SCREEN_SIZE:
                    img = resize_image(img, SCRWIDTH, SCRHEIGHT)

            if not self.opts.dont_sharpen:
                img = gaussian_sharpen_image(img, 0.0, 1.0)

            if not self.opts.dont_grayscale:
                img = grayscale_image(img)

            if self.opts.despeckle:
                img = despeckle_image(img)

            if self.opts.output_format.lower() == 'png' and self.opts.colors:
                img = quantize_image(img,
                                     max_colors=min(256, self.opts.colors))
            dest = '%d_%d.%s' % (self.num, i, self.opts.output_format)
            dest = os.path.join(self.dest, dest)
            with lopen(dest, 'wb') as f:
                f.write(image_to_data(img, fmt=self.opts.output_format))
            self.append(dest)