Mixing vertical and horizontal sobel filtering.

#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <iostream>

int main()
{
    cv::Mat img = cv::imread("E:/Dropbox/IMERSO/stainless-cube01_1024x1024.jpg");
    cv::namedWindow("FunnyEffectsLol9ga!!!111", cv::WINDOW_AUTOSIZE);
    cv::Mat grey;
    cv::cvtColor(img, grey, cv::COLOR_BGR2GRAY);

    cv::Mat sobel1;
    cv::Sobel(grey, sobel1, CV_32F, 0, 1);

    double minVal, maxVal;
    minMaxLoc(sobel1, &minVal, &maxVal); //find minimum and maximum intensities

    cv::Mat draw1;
    sobel1.convertTo(draw1, CV_8U, 255.0 / (maxVal - minVal), -minVal * 255.0 / (maxVal - minVal));

    cv::Mat sobel2;
    cv::Sobel(grey, sobel2, CV_32F, 1, 0);

    minMaxLoc(sobel2, &minVal, &maxVal); //find minimum and maximum intensities

    cv::Mat draw2;
    sobel2.convertTo(draw2, CV_8U, 255.0 / (maxVal - minVal), -minVal * 255.0 / (maxVal - minVal));

    cv::Mat height(draw2);
    //cv::min(draw1, draw2, height);

    for (size_t y = 1; y < height.rows-1; y++) {
        for (size_t x = 1; x < height.cols-1; x++) {
            height.at<uchar>(y, x) = (draw1.at<uchar>(y, x) + draw2.at<uchar>(y, x)) / 2;
        }
    }

    cv::GaussianBlur(height, height, cv::Size(3, 3), 1, 1);
    imshow("FunnyEffectsLol9ga!!!111", height);

    cv::waitKey(0);
    cv::destroyWindow("FunnyEffectsLol9ga!!!111");
    return 0;
}