Function extractPatch

src/openpose/tracking/pyramidalLK.cpp:193–217

    }

    char extractPatch(std::vector< std::vector<float>>& patch, const int x, const int y, const int patchSize,
                      const cv::Mat& image)
    {
        try
        {
            int radix = patchSize / 2;

            if ( ((x - radix) < 0) ||
                 ((x + radix) >= image.cols) ||
                 ((y - radix) < 0) ||
                 ((y + radix) >= image.rows))
                return OUT_OF_FRAME;

            for (auto i = -radix; i <= radix; i++)
                for (auto j = -radix; j <= radix; j++)
                    patch[i+radix][j+radix] = image.at<float>(y+i,x+j);

            return SUCCESS;
        }
        catch (const std::exception& e)
        {
            error(e.what(), __LINE__, __FUNCTION__, __FILE__);
            return UNDEFINED_ERROR;
        }
    }

    char extractPatchIt(std::vector<std::vector<float>>& patch, const int xI, const int yI, const int xJ,
                        const int yJ, const cv::Mat& I, const cv::Mat& J, const int patchSize)