我制作了两个输入图像图像魔术师像这样:
magick -size 300x400 xc:"rgb(1,204,255)" -fill red -draw "point 280,250" 1.png
magick -size 250x80 xc:"rgb(150,203,0)" -fill red -draw "point 12,25" 2.png
然后运行以下代码:
#!/usr/bin/env python3
"""
Paste one image on top of another such that given points in each are coincident.
"""
from PIL import Image
# Open images and ensure RGB
im1 = Image.open('1.png').convert('RGB')
im2 = Image.open('2.png').convert('RGB')
# x,y coordinates of point in each image
p1x, p1y = 280, 250
p2x, p2y = 12, 25
# Work out how many pixels of space we need left, right, above, below common point in new image
pL = max(p1x, p2x)
pR = max(im1.width-p1x, im2.width-p2x)
pT = max(p1y, p2y)
pB = max(im1.height-p1y, im2.height-p2y)
# Create background in solid white
bg = Image.new('RGB', (pL+pR, pT+pB),'white')
bg.save('DEBUG-bg.png')
# Paste im1 onto background
bg.paste(im1, (pL-p1x, pT-p1y))
bg.save('DEBUG-bg+im1.png')
# Make 40% opacity mask for im2
alpha = Image.new('L', (im2.width,im2.height), int(40*255/100))
alpha.save('DEBUG-alpha.png')
# Paste im2 over background with alpha
bg.paste(im2, (pL-p2x, pT-p2y), alpha)
bg.save('result.png')
结果是这样的:
保存以名称开头的图像的行"DEBUG-xxx.png"
只是为了方便调试,可以删除。我可以轻松地查看它们全部以了解代码发生了什么,并且我可以通过删除轻松删除它们"DEBUG*png"
.