Function visualizeFlowfield

src/postProcessing.cpp:60–76

visualize ETF by drawing red arrowline

// visualize ETF by drawing red arrowline
cv::Mat visualizeFlowfield(const cv::Mat &flowfield)
{
    constexpr int resolution = 10;
    cv::Mat dst{flowfield.size(), CV_32FC3, cv::Scalar(1, 1, 1)};

    for (int i = 0; i < dst.rows; i += resolution) {
        for (int j = 0; j < dst.cols; j += resolution) {
            const cv::Vec3f v = flowfield.at<cv::Vec3f>(i, j);
            const cv::Point2f p1(j, i);
            const cv::Point2f p2(j + v[1] * 5, i + v[0] * 5);

            cv::arrowedLine(dst, p1, p2, cv::Scalar(1, 0, 0), 1.5, 8, 0, 0.3);
        }
    }

    return dst;
}

cv::Mat antiAlias(const cv::Mat &src)
{