0021-python比较两张图片是否一致

àì夳堔傛蜴生んèń 2023-01-08 06:22 188阅读 0赞

def checkImgIsSameByMD5Hash(img1,img2):
        img_data1 = numpy.array(Image.open(img1))
        img_data2 = numpy.array(Image.open(img2))
        imgMD51 = hashlib.md5(img_data1).hexdigest()
        imgMD52 = hashlib.md5(img_data2).hexdigest()
        if imgMD51==imgMD52:
            return True
        else:
            return False
    
    
    from PIL import Image
    from 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')
    
    
    
    
    
    ###第三种方法
    from PIL import Image
    import math
    import operator
    from functools import reduce
    
    
    def 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 result
    
    if __name__ == '__main__':
        img1 = "./1.png"  # 指定图片路径
        img2 = "./2.png"
        result = image_contrast(img1,img2)
        print(result)
    
    
    
    
    #方案三
    import cv2
    import numpy as np
    image1 = cv2.imread('A.jpg')
    image2 = cv2.imread('B.jpg')
    difference = cv2.subtract(image1, image2)
    result = not np.any(difference) #if difference is all zeros it will return False
    if result is True:
         print("两张图片一样")
    else:
         cv2.imwrite("result.jpg", difference)
     
         print ("两张图片不一样")