本文介绍了什么是cv :: setTo函数的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

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

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11-01 18:56