表情包制作

对着泊松融合的算法描述口胡了代码，没想到确实能看出效果

 

存在问题：1.计算时用了整除，导致部分区域色调改变

　　　　　2.插入图片的边缘没有设成透明，出现一片糊

　　　　   3.本质上是口胡算法

# -*- coding: cp936 -*-
from PIL import Image

back=Image.open("1.bmp")
man=Image.open("2.bmp")
    
pixel1=back.load()
pixel2=man.load()

n1=680
m1=453
n2=119
m2=173
begn=300
begm=140

div=[]
for i in range(n1):
  div.append([])
  for j in range(m1):
    div[i].append([])
    for chan in range(3):
      div[i][j].append([])
for i in range(1,n1-1):
  for j in range(1,m1-1):
    for chan in range(3):
      div[i][j][chan]=pixel1[i-1,j][chan]+pixel1[i,j-1][chan]+pixel1[i+1,j][chan]+pixel1[i,j+1][chan]-4*pixel1[i,j][chan]
for i in range(1,n2-1):
  for j in range(1,m2-1):
    for chan in range(3):
      div[i+begn][j+begm][chan]=pixel2[i-1,j][chan]+pixel2[i,j-1][chan]+pixel2[i+1,j][chan]+pixel2[i,j+1][chan]-4*pixel2[i,j][chan]

back.save("T1.bmp")

for T in range(1,1001):
  im=Image.open("T%d.bmp"%T)
  pixel=im.load()
  for i in range(n1):
    for j in range(m1):
      if i>0 and i<(n1-1) and j>0 and j<(m1-1):
        im.putpixel((i,j),(-(div[i][j][0]-pixel[i-1,j][0]-pixel[i,j-1][0]-pixel[i+1,j][0]-pixel[i,j+1][0])/4,-(div[i][j][1]-pixel[i-1,j][1]-pixel[i,j-1][1]-pixel[i+1,j][1]-pixel[i,j+1][1])/4,-(div[i][j][2]-pixel[i-1,j][2]-pixel[i,j-1][2]-pixel[i+1,j][2]-pixel[i,j+1][2])/4))
      else:
        im.putpixel((i,j),(pixel[i,j][0],pixel[i,j][1],pixel[i,j][2]))
  im.save('T%d.bmp'%(T+1))

大致效果

 -----------------------------------------------------------------------

进行了一些迷之修改，去除了边缘空白与色调变化问题

# -*- coding: cp936 -*-
# 打开图片
from PIL import Image

back=Image.open("1.bmp")
man=Image.open("2.bmp")
mark=Image.open("3.bmp")
    
pixel1=back.load()
pixel2=man.load()
pixel3=mark.load()

n1=680
m1=453
n2=119
m2=173
begn=300
begm=140

div=[]
for i in range(n1):
  div.append([])
  for j in range(m1):
    div[i].append([])
    for chan in range(3):
      div[i][j].append([])
for i in range(1,n1-1):
  for j in range(1,m1-1):
    for chan in range(3):
      div[i][j][chan]=pixel1[i-1,j][chan]+pixel1[i,j-1][chan]+pixel1[i+1,j][chan]+pixel1[i,j+1][chan]-4*pixel1[i,j][chan]

for i in range(1,n2-1):
  for j in range(1,m2-1):
    gray=0.3*pixel3[i,j][0]/256+0.59*pixel3[i,j][1]/256+0.11*pixel3[i,j][2]/256
    if gray<=0.5:
    #黑色是(0,0,0)...
      for chan in range(3):
        div[i+begn][j+begm][chan]=pixel2[i-1,j][chan]+pixel2[i,j-1][chan]+pixel2[i+1,j][chan]+pixel2[i,j+1][chan]-4*pixel2[i,j][chan]
    #else:
      #print "%d,%d,(%d,%d,%d)\n"%(i,j,pixel3[i,j][0],pixel3[i,j][1],pixel3[i,j][2])
    
back.save("T1.bmp")
col=[]
tcol=[]
for i in range(n1):
  col.append([])
  tcol.append([])
  for j in range(m1):
    col[i].append([])
    tcol[i].append([])
    for chan in range(3):
      col[i][j].append([])
      tcol[i][j].append([])
      col[i][j][chan]=pixel1[i,j][chan]

for T in range(1,1001):
  for i in range(n1):
    for j in range(m1):
      for chan in range(3):
        if i>0 and i<(n1-1) and j>0 and j<(m1-1):
          tcol[i][j][chan]=1.0*(col[i-1][j][chan]+col[i][j-1][chan]+col[i+1][j][chan]+col[i][j+1][chan]-div[i][j][chan])/4.0    
        else:
          tcol[i][j][chan]=col[i][j][chan]
  for i in range(n1):
    for j in range(m1):
      for chan in range(3):
        col[i][j][chan]=tcol[i][j][chan]
      back.putpixel((i,j),(int(round(tcol[i][j][0])),int(round(tcol[i][j][1])),(int(round(tcol[i][j][2])))))
      
  back.save('T%d.bmp'%(T+1))