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【Halcon视觉】图像滤波
2022-07-26 10:16:00 【文布斯】
图像滤波的目的是“去噪”。常见的滤波方式有三种:均值滤波,中值滤波,高斯滤波。
一.均值滤波
均值滤波是指,任意一点的像素值,都是周围N*M个点的像素值的平均值。

二.中值滤波
在使用领域平均值,实现去噪时,边缘也会变得模糊,因此有了中值滤波,任意一点的周围,N*M个点,将这些点的像素值,按照从大到小的顺序排列,取中位数,作为目标点的像素值。

三. 高斯滤波
图像上任意一点,对周围N*M个点,进行加权计算。距离目标点较近的点,权重更大,距离目标点较远的点,权重更小。所有点的权重值之和为1。


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