实现了灰度图像的膨胀与腐蚀算法，达到了至少3倍速度的提高。大家都知道图像的膨胀与腐蚀常被用在数字图像重构中，非常有用处的算法。-The expansion of the gray image and corrosion algorithm to achieve at least three times the speed increases. We all know that image expansion and corrosion are often used in digital image reconstruction, a very useful algorithm.