Indexing in cv::Mat

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Dear authors,

Thank you for your great work.

In https://github.com/kpandey008/Abnormal-Event-Detection/blob/ecf6fafe25bdf4b00974f0146afeb50819f79896/ikst_matlab/src/testFeaExtractor.cpp#L131,

should the index be "ii-1" and "jj-1" instead of "ii" and "jj", since they start from 0?

Thank you.