第十五届蓝桥杯网络安全个人赛部分赛题解析

  
    
  
    
 class WaterMarkDWT:
    
     def __init__(self, origin: str, watermark: str, key: int, weight: list):
    
     self.key = key
    
     self.img = cv2.imread(origin)
    
     self.mark = cv2.imread(watermark)
    
     self.coef = weight
    
  
    
  
    
     def arnold(self, img):
    
     r, c = img.shape
    
     p = np.zeros((r, c), np.uint8)
    
  
    
     a, b = 1, 1
    
     for k in range(self.key):
    
         f