pip install pillow

import numpy as np
from PIL import Image
img = Image.open("./b.png").convert('RGBA')
a_img = np.asarray(img)

import matplotlib.pyplot as plt
 
plt.figure("beauty") # 开启图层，名称为 beauty
plt.imshow(a_img) # 二维数组的数据
plt.axis('off')
#plt.show()
plt.savefig("./result.png")

from PIL import Image
import numpy as np
import matplotlib.pyplot as plt
def modeSuperposition(basePixel,mixPixel,alpha):
 basePixel = int(basePixel)
 mixPixel = int(mixPixel);
 res=0
 if basePixel <= 128 :
  res = int(mixPixel) * int(basePixel) / 128;
 else:
  res = 255 - (255 - mixPixel)*(255 - basePixel) / 128;  
 a = alpha / 255; 
 if a > 1:
  a = 1
 res = (1-a)*basePixel + a*res 
 t = int(res)&-256
 if t == 0:
  return int(res)
 if res > 255:
  return 255 
 return 0 
def mergePoint(x,y):
 p1 = img1[x][y]
 p2 = img2[x][y]
 p1[1] = modeSuperposition(p1[0],p2[0],p2[3])
 p1[2] = modeSuperposition(p1[1],p2[1],p2[3])
 p1[3] = modeSuperposition(p1[2],p2[2],p2[3])  
imgA = Image.open('./b.png')
img1=np.array(imgA.convert('RGBA')) #打开图像并转化为数字矩
img2=np.array(Image.open("./light.png").convert('RGBA'))  
i = len(img1);
j = len(img1[0]);
 
for k in range(0,len(img2)):
 for n in range(0,len(img2[0])):
  if k < i and n < j:
   mergePoint(k,n)  
#img = Image.new("RGBA",imgA.size)###创建一个5*5的图片
plt.figure("beauty") # 开启图层，名称为 beauty
plt.imshow(img1) # 二维数组的数据
plt.axis('off')
#plt.show()
plt.savefig("./result.png")