我有一个方形徽标,我需要对其进行圆角处理,搜索了一段时间并获得了以下代码“工作”:
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)
然后我保存了返回的图像对象,但是 像这样在角落里有白色背景 我怎样才能摆脱白色背景或让它不可见?先谢谢了~
编辑:这是 fraxel 的代码,谢谢~
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')`
很抱歉..我需要图像形状是椭圆而不是矩形,即从图片上写下东西,@fraxel,我仍然可以看到你为我处理的图片中的白色角落