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Looks to me like you are trying to access a point outside your Mat.

You need to explicitly check that the values of x and y are smaller than src.cols and src.rows respectively before calling at.

OpenCV checks this internally but throws an exception if they are not. guy

Looks to me like you are trying to access a point outside your Mat.

You need to explicitly check that the values of x x and y y are smaller than src.cols src.cols and src.rows src.rows respectively before calling at.at.

OpenCV checks this internally but throws an exception if they are not. guy

Looks to me like you are trying to access a point outside your Mat.

You need to explicitly check that the values of x and y are smaller than src.cols and src.rows respectively before calling at.

OpenCV checks this internally but throws an exception if they are not.