I want to rotate a gray "test" image and paste it onto a blue background image. Now I just can remove the black color after rotate my gray "test" image, but their is now a white color section. How can I use Python to change the "white" color section to blue?
Here is my code, can someone help me? I'd appreciate it.
dst_im = Image.new("RGBA", (196,283), "blue" )
im = src_im.convert('RGBA')
rot = im.rotate( angle, expand=1 ).resize(size)
f = Image.new( 'RGBA', rot.size, (255,)*4 )
im2 = Image.composite( rot, f, rot )
im2.convert(src_im.mode)
im2_width, im2_height = im2.size
cut_box = (0, 0, im2_width, im2_height )
paste_box = ( left, top, im2_width+left, im2_height+top )
region = im2.crop( cut_box )
dst_im.paste( region, paste_box )
dst_im.save("test.gif")
I have the impression that your code could be simplified as follows:
This gives the following result:
Another answer using PIL is clearly more succinct. I had a similar problem and had the image in an ndarray. Yipes, mine came out way more complicated than user1202136. I'm posting it only because it demonstrates another solution using numpy and array stacking, but user1202136's solution is much better.