用python实现对比两张图片的不同

from PIL import Imagefrom PIL import ImageChops def compare_images(path_one, path_two, diff_save_location):  """  比较图片，如果有不同则生成展示不同的图片  @参数一: path_one: 第一张图片的路径  @参数二: path_two: 第二张图片的路径  @参数三: diff_save_location: 不同图的保存路径  """  image_one = Image.open(path_one)  image_two = Image.open(path_two)  try:     diff = ImageChops.difference(image_one, image_two)    if diff.getbbox() is None:    # 图片间没有任何不同则直接退出      print("【+】We are the same!")    else:      diff.save(diff_save_location)  except ValueError as e:    text = ("表示图片大小和box对应的宽度不一致，参考API说明：Pastes another image into this image."        "The box argument is either a 2-tuple giving the upper left corner, a 4-tuple defining the left, upper, "        "right, and lower pixel coordinate, or None (same as (0, 0)). If a 4-tuple is given, the size of the pasted "        "image must match the size of the region.使用2纬的box避免上述问题")    print("【{0}】{1}".format(e,text))if __name__ == '__main__':  compare_images('1.png',          '2.png',          '我们不一样.png')

from PIL import Imageimport mathimport operatorfrom functools import reducedef image_contrast(img1, img2):  image1 = Image.open(img1)  image2 = Image.open(img2)  h1 = image1.histogram()  h2 = image2.histogram()  result = math.sqrt(reduce(operator.add, list(map(lambda a,b: (a-b)**2, h1, h2)))/len(h1) )  return resultif __name__ == '__main__':  img1 = "./1.png" # 指定图片路径  img2 = "./2.png"  result = image_contrast(img1,img2)  print(result)