什么是cv :: setTo函数 [英] what is cv::setTo function

问题描述

我有一个使用OpenCV在C ++中编写的代码，并且此代码使用函数setTo。基本上，它用作：

I have a code written using OpenCV in C++, and this code uses a function setTo. Basically, it is used as:

cv::Mat xx; //prefedined and has some values
cv::Mat yy; // initially empty

yy.setTo(0,xx);

那么你能解释一下这里的setTo是什么意思？是否将所有零值放在yy中，或者它放置1其中xx是非零和0，其中xx也是零？

So can you explain what does this setTo means here? Does is put all zero values in yy, or it puts 1 where xx is non-zero and 0 where xx is zero too?

推荐答案

p> yy.setTo（0）会将所有像素设置为0。

yy.setTo(0) will set all the pixels to 0.

yy.setTo（0，xx）将把xx Mat 中具有值为1的对应像素的所有像素设置为0。

yy.setTo(0, xx) will set all the pixels who have a corresponding pixel with a value of 1 in the xx Mat to 0.

示例：

yy =
2 2 2
2 2 2
2 2 2

xx =
0 0 0
0 1 0
0 0 0

yy.setTo(0, xx) =>

yy = 
2 2 2
2 0 2
2 2 2

这篇关于什么是cv :: setTo函数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！