How to use LBP to visualize results ?

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#include <opencv2/highgui/highgui.hpp>
#include <opencv2/core/core.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/objdetect/objdetect.hpp>
#include <limits.h>
#include <math.h>
#include <iostream>


using namespace std;
using namespace cv;

Mat LBP(Mat src_image)
{
    bool value=true;
    Mat Image(src_image.rows, src_image.cols, CV_8UC1);
    Mat lbp(src_image.rows, src_image.cols, CV_8UC1);

    if (src_image.channels() == 3)
        cvtColor(src_image, Image, CV_BGR2GRAY);

    unsigned center = 0;
    unsigned center_lbp = 0;

    for (int row = 1; row < Image.rows-1; row++)
    {
        for (int col = 1; col < Image.cols-1; col++)
        {
            center = Image.at<uchar>(row, col);
            center_lbp = 0;

            if (center <= Image.at<uchar>(row-1, col-1))
                center_lbp += 1;

            if (center <= Image.at<uchar>(row-1, col))
                center_lbp += 2;//2

            if (center <= Image.at<uchar>(row-1, col+1))
                center_lbp += 4;//4

            if (center <= Image.at<uchar>(row, col+1 ))
                center_lbp += 8;//8

            if (center <= Image.at<uchar>(row+1, col+1))
                center_lbp += 16;//16

            if (center <= Image.at<uchar>(row+1, col))
                center_lbp += 32;//32

            if (center <= Image.at<uchar>(row+1,col-1))
                center_lbp += 64;//64

            if (center <= Image.at<uchar>(row,col-1))
                center_lbp += 128;//128
            lbp.at<uchar>(row, col) = center_lbp;
        }
    }

    if(value == true)
    {
        namedWindow( "image LBP", CV_WINDOW_FREERATIO);
        imshow("image_LBP", lbp);
        imwrite("/root/Desktop/LBP.jpg",lbp);
        waitKey(0);
        imshow("grayscale",Image);
        waitKey(0);
    }
    else
    {
      cv::destroyWindow("image LBP");
      cv::destroyWindow("grayscale");
    }

    return lbp;

}

int main()
{
    string filename="1.jpg";
    Mat frame1;
    frame1= imread("/root/Desktop/"+filename);
    LBP(frame1);
}