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cv::Mat_ compiling error

asked 2019-12-17 21:57:24 -0500

NTT gravatar image

I have very simple program to use cv::Mat_, and I found a compiling error, it took a lot of time to figure out that I had problem with specific type of integer. I think it might be a bug in OpenCV. Can any one help me to understand the error? Thank you very much in advance!!!!!

I am using Visual Studio Community 2019. The codes as follows:

#include <opencv2/core.hpp>

#ifdef _DEBUG
#pragma comment(lib, "opencv_core411d.lib")
#pragma comment(lib, "opencv_core411.lib")

int main()
    cv::Mat_<cv::Vec<int, 3>> mat1;//This is OK
    cv::Mat_<cv::Vec<uint, 3>> mat2;//This causes compiling error. This is also for unsigned int
    cv::Mat_<cv::Vec3i> mat3;    //This is OK
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answered 2019-12-18 01:22:40 -0500

mvuori gravatar image

That's probably because unsigned int is not one of OpenCV's primitive data types.

(Reason for 'probably': you don't tell _what_ the error is.)

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That makes sense! Thank you very much! The problem is for cv::Mat, but it is fine for cv::Vec, eg.:

cv::Vec<unsigned int,="" 3=""> v;     //This is OK

NTT gravatar imageNTT ( 2019-12-18 16:21:34 -0500 )edit

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Last updated: Dec 18 '19