Python 使用PIL numpy 实现拼接图片

# -*- coding:utf-8 -*-
def mergeReport(files):
from PIL import Image
import numpy as np
baseimg=Image.open(files[0])
sz = baseimg.size
basemat=np.atleast_2d(baseimg)
for file in files[1:]:
im=Image.open(file)
#resize to same width
sz2 = im.size
if sz2!=sz:
im=im.resize((sz[0],round(sz2[0] / sz[0] * sz2[1])),Image.ANTIALIAS)
mat=np.atleast_2d(im)
basemat=np.append(basemat,mat,axis=0)
report_img=Image.fromarray(basemat)
report_img.save('merge.png')