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- try:
- import Image
- import ImageEnhance
- except ImportError:
- from PIL import Image, ImageEnhance
- def reduce_opacity(im, opacity):
- """Returns an image with reduced opacity."""
- assert 0 <= opacity <= 1
- im = im.convert('RGBA') if im.mode != 'RGBA' else im.copy()
- alpha = im.split()[3]
- alpha = ImageEnhance.Brightness(alpha).enhance(opacity)
- im.putalpha(alpha)
- return im
- def watermark(im, mark, position, opacity=1, maxsize=(0, 0), possize=(0, 0)):
- """ Add watermark to image """
- if opacity < 1:
- mark = reduce_opacity(mark, opacity)
- if im.mode != 'RGBA':
- im = im.convert('RGBA')
-
- w, h = int(min(mark.size[0], maxsize[0]) if maxsize[0] else mark.size[0]), int(min(mark.size[1], maxsize[1]) if maxsize[1] else mark.size[1])
- mark = mark.resize((w, h))
-
-
- layer = Image.new('RGBA', im.size, (0, 0, 0, 0))
- if position == 'tile':
- for y in range(0, im.size[1], mark.size[1]):
- for x in range(0, im.size[0], mark.size[0]):
- layer.paste(mark, (x, y))
- elif position == 'scale':
-
- ratio = min(float(im.size[0]) / mark.size[0], float(im.size[1]) / mark.size[1])
- w, h = int(mark.size[0] * ratio), int(mark.size[1] * ratio)
- w, h = int(min(w, maxsize[0]) if maxsize[0] else w), int(min(h, maxsize[1]) if maxsize[1] else h)
- mark = mark.resize((w, h))
- layer.paste(mark, ((im.size[0] - possize[0] or w) / 2, (im.size[1] - possize[1] or h) / 2))
- else:
- layer.paste(mark, position)
-
- return Image.composite(layer, im, layer)
- def watermark_wrap(im_path, mark_path, save_path=''):
- im, mark = Image.open(im_path), Image.open(mark_path)
-
- new_im = watermark(im, mark, position='scale', opacity=1.0, maxsize=(400, 505.2), possize=(400, 400))
- new_im.save(save_path or im_path)
- def watermark_test():
- im, mark = Image.open('original_CGzC_10a50000c8811190.jpg'), Image.open('paiai_water_mark.png')
- watermark(im, mark, position='tile', opacity=0.5, maxsize=(40, 49.4375)).show()
- watermark(im, mark, position='scale', opacity=1.0, maxsize=(400, 494.375), possize=(400, 400)).show()
- watermark(im, mark, position=(50, 50), opacity=0.5, maxsize=(40, 49.4375)).show()
- if __name__ == '__main__':
-
- watermark_wrap('original_CGzC_10a50000c8811190.jpg', 'paiai_water_mark.png')
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