A new algorithm in which the defined hit-miss transform is reformulated by a grayscale erosion of the image with a grayscale structural element of three levels is developed.

• 根据击中击不中运算的定义提出基于光学单通道相关器的灰度腐蚀的概念,证明了图像对具有三个灰度级的结构核的腐蚀操作等价于击中击不中形态学操作；