python 图片对比区域_Python 实现图片对比检测

from PIL import Image  # 先安装Pillow, \>pip install Pillow, or \>easy_install Pillow ，参考：http://pillow.readthedocs.io/en/latest/installation.html

import math

import operator

def imageSimilarity(self,image1, image2):

image1 = Image.open(image1)

image2 = Image.open(image2)

h1 = image1.histogram()

h2 = image2.histogram()

SV = math.sqrt(reduce(operator.add, list(map(lambda a,b: (a-b)**2, h1, h2)))/len(h1) ) #完全相同时结果为0.0，差别越大值越大

print SV

return SV

def checkImage(self, standardImage, similar=0.99):

_dic={

1 : 0,

0.99 : 10,

0.9 : 50,

}

if self.imageSimilarity(standardImage) > _dic[similar]:

print("---Fail,图片对比失败")

return False

else:

print("---pass,图片对比成功")

return True