OpenCV 2.3中的Mat(逻辑)运算符'> =' [英] Mat (logic) operator '>=' in OpenCV 2.3

问题描述

我从OpenCV 2.3运行了一个演示代码distrans.cpp，其中有几行代码我几乎不知道这是什么意思:

I run a demo code from OpenCV 2.3, distrans.cpp and there is a line of code I barely figure out what it means:

Mat edge = gray >= edgeThresh, dist, labels, dist8u;

它的使用类似于阈值操作，但我不知道它是如何工作的，甚至不知道&用谷歌搜索.

It is used like a thresholding operation but I don't know how it works or even to name & google it.

谢谢

推荐答案

operator >= cv :: Mat的重载将操作映射到

operator >= overload for cv::Mat maps the operation to call to cv::compare with the relevant comparison key.

cv::compare函数返回一个掩码(深度为CV_8U的cv::Mat)，其中所有满足条件的元素(如果gray的元素的值不小于edgeThresh)被设置为0xFF，其他元素为零.

The cv::compare function returns a mask (cv::Mat of CV_8U depth) where all elements satisfying the condition (if element of gray has a value not less than edgeThresh in your case) are set to 0xFF and the other elements are zero.

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