CODEWITHSUNDEEP
c++opencv
user3243651
user3243651

Reputation: 241

C++: Cross correlation with OpenCV

I have to implement a cross correlation of two arrays in C++, and I think that could be do with template matching in OpenCV.

I started with a simple case:

    double telo [3] ={0,1,2};
    Mat prueba(1,3,CV_64F,telo);

    double telo2[3] = {0,1,2};
    Mat prueba2(1,3,CV_64F,telo2);

    Mat result(1,50,CV_64F);


    matchTemplate(prueba,prueba2,result,CV_TM_CCORR);

But it crashes, how can i do this? it is possible?

Thanks

Upvotes: 1

Views: 4832

Answers (1)

LovaBill
LovaBill

Reputation: 5139

Error message reveals that only CV_8U or CV_32F types are used. The code runs with float types. If you want to use double precision, you'll have to built your own function.

Working code:

    float telo [3] ={0,1,2};
    Mat prueba(1,3,CV_32F,telo);
    float telo2[3] = {0,1,2};
    Mat prueba2(1,3,CV_32F,telo2);
    Mat result;
    matchTemplate(prueba,prueba2,result,CV_TM_CCORR);

Assertion messages explain most of the times the situation. Check the console output next time.

Upvotes: 3

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