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POhow to round_corner a logo without white background(transparent?) on it using pil?
 

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  1. POhow to round_corner a logo without white background(transparent?) on it using pil?
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    <p>I got a square logo and I need to round_corner it, searched for a while and got the follow code "working":</p> <pre><code>def round_corner_jpg(image, radius): """generate round corner for image""" mask = Image.new('RGB', image.size) #mask = Image.new('RGB', (image.size[0] - radius, image.size[1] - radius)) #mask = Image.new('L', image.size, 255) draw = aggdraw.Draw(mask) brush = aggdraw.Brush('black') width, height = mask.size draw.rectangle((0,0,width,height), aggdraw.Brush('white')) #upper-left corner draw.pieslice((0,0,radius*2, radius*2), 90, 180, None, brush) #upper-right corner draw.pieslice((width - radius*2, 0, width, radius*2), 0, 90, None, brush) #bottom-left corner draw.pieslice((0, height - radius * 2, radius*2, height),180, 270, None, brush) #bottom-right corner draw.pieslice((width - radius * 2, height - radius * 2, width, height), 270, 360, None, brush) #center rectangle draw.rectangle((radius, radius, width - radius, height - radius), brush) #four edge rectangle draw.rectangle((radius, 0, width - radius, radius), brush) draw.rectangle((0, radius, radius, height-radius), brush) draw.rectangle((radius, height-radius, width-radius, height), brush) draw.rectangle((width-radius, radius, width, height-radius), brush) draw.flush() del draw return ImageChops.add(mask, image) </code></pre> <p>then I saved the returned image object,however it has white background in the corner <a href="http://www.flickr.com/photos/76230909@N03/7484692296/in/photostream" rel="noreferrer"> like this </a> How can i get rid of the white background or make it invisible? Thanks in advance~</p> <p>EDIT: here is the code by fraxel,thanks~</p> <pre><code>def add_corners(im, rad): circle = Image.new('L', (rad * 2, rad * 2), 0) draw = ImageDraw.Draw(circle) draw.ellipse((0, 0, rad * 2, rad * 2), fill=255) alpha = Image.new('L', im.size, "white") w, h = im.size alpha.paste(circle.crop((0, 0, rad, rad)), (0, 0)) alpha.paste(circle.crop((0, rad, rad, rad * 2)), (0, h - rad)) alpha.paste(circle.crop((rad, 0, rad * 2, rad)), (w - rad, 0)) alpha.paste(circle.crop((rad, rad, rad * 2, rad * 2)), (w - rad, h - rad)) im.putalpha(alpha) return im if __name__ == '__main__': im = Image.open('1.jpg') im = add_corners(im, 100) im.save('out.png')` </code></pre> <p>I am so sorry..I need the image shape to be ellipse not rectangle,I.E. the write stuff off the pic,and @fraxel, I still can see the white corner in the pic you processed for me</p>
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