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#include<opencv2/highgui/highgui.hpp>

#include <opencv/cv.h>

#include <opencv/highgui.h>

#include <cmath>

#include <iostream>

using namespace cv;

using namespace std;

int main()

{
          Mat M = imread("scenetext03.jpg",CV_LOAD_IMAGE_COLOR);
          double MAX_blue = 0.0;
          double MAX_green = 0.0;
          double MAX_red = 0.0;

cout << "M.rows " << M.rows << "\n"; cout << "M.cols " << M.cols << "\n";

          for (unsigned int i = 0; i < M.rows; i++)
            {


              for (int unsigned j = 0; j < M.cols; j++)
                {
                  Vec3b data = M.at<Vec3b>(i, j);
                  if (abs(data.val[0]) > MAX_blue) MAX_blue = pow(abs(data.val[0]), 2);
                  if (abs(data.val[1]) > MAX_green) MAX_green = pow(abs(data.val[1]), 2);
                  if (abs(data.val[2]) > MAX_red) MAX_red = pow(abs(data.val[2]), 2);
                 }
             }

          for (int i = 0; i < M.rows; i++)
                {
                  for (int j = 0; j < M.cols; j++)
                        {
                          M.at<Vec3b>(i,j)[0] = pow(abs(M.at<Vec3b>(i,j)[0]), 2) / MAX_blue * 255;
                          M.at<Vec3b>(i,j)[1] = pow(abs(M.at<Vec3b>(i,j)[1]), 2) / MAX_blue * 255;
                          M.at<Vec3b>(i,j)[2] = pow(abs(M.at<Vec3b>(i,j)[2]), 2) / MAX_green * 255;
                         }
                 }

          namedWindow("Intensity", WINDOW_AUTOSIZE);
          imshow("Intensity", M);

          waitKey();

          destroyAllWindows(); //destroy all open windows

  return 0;
 }