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How can I initialize Mat with integer value?

asked 2013-12-25 21:42:10 -0500

Nihad gravatar image

I tried to initialize Mat with some int values, but it yielded error. How can I initialize Mat with some integer values? Here is my code:

int main(...)
{
Mat image(3, 3, CV_8U);

for(int y=0;y<3;y++)
{
  for(int x=0;x<3;x++)
  {
    image.at<int>(y,x)=0;//error here

  }
}
}
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answered 2013-12-26 03:21:18 -0500

Your Mat is of type CV_8U, so you should access it's elements using:

image.at<uchar>(y,x)=0

However, you can also create a matrix of all zeros using :

Mat Z = Mat::zeros(3,3, CV_8UC1);
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Comments

1

... or a Mat with a value : Mat m(3,3, CV_8UC1, Scalar(23) );

berak gravatar imageberak ( 2013-12-26 03:35:25 -0500 )edit

Thanks for the comment @berak!

GilLevi gravatar imageGilLevi ( 2013-12-26 04:10:35 -0500 )edit

Thank you!

Nihad gravatar imageNihad ( 2013-12-26 04:31:59 -0500 )edit
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Asked: 2013-12-25 21:42:10 -0500

Seen: 1,299 times

Last updated: Dec 26 '13