关于CROSS

1.形态学运算与结构元素
形态学运算是针对二值图像依据数学形态学(Mathematical Morphology)的集合论方法发展起来的图像处理方法。数学形态学起源于岩相学对岩石结构的定量描述工作，近年来在数字图像处理和机器视觉领域中得到了广泛的应用，形成了一种独特的数字图像分析方法和理论。

结构元素可以简单的定义为像素的组合，在对应的像素上定义了原点（也称锚点）。形态学滤波器的应用过程就是利用这个结构元素探测图像中每个像素的操作过程。把某个像素设为结构元素的锚点后，结构元素和图像重叠部分的像素集合就是特定形态学运算的应用对象。结构元素原则上可以是任何形状，但通常是一个简单形状，如正方形、圆形、菱形等，且把中心点作为原点。

1. Morphological operations and structural elements

Morphological operation is an image processing method developed by means of Mathematical Morphology based on binary images.Mathematical morphology originated from the quantitative description of rock structure in petrography, and has been widely applied in the field of digital image processing and machine vision in recent years, forming a unique digital image analysis method and theory.

A structural element can simply be defined as a combination of pixels, with an origin (also known as an anchor point) defined on the corre