Sandhya's profile - activity

I have written a code to plot the histogram and i need to count the number of peaks in the histogram plot. Since i am new to it i was facing problem in finding the peaks, so please help me in solving this problem

#include "stdio.h"
#include "iostream"

#include "opencv\cxcore.h"
#include "opencv\highgui.h"
#include "opencv\cv.h"

#include "opencv2\core\core.hpp"
#include "opencv2\highgui\highgui.hpp"
#include "opencv2\imgproc\imgproc.hpp"


using namespace cv;
using namespace std;


//int main( int argc, char** argv )
//{
//  Mat src,hsv;
  // src=imread("DSC02712.JPG", CV_LOAD_IMAGE_COLOR);

    int main( int argc, char** argv )
{
  Mat src, dst,src1;

  /// Load image
  src = imread( "1.png", CV_LOAD_IMAGE_COLOR );
  cvtColor(src,src1,CV_RGB2GRAY);

  if( !src.data )
    { return -1; }

  /// Separate the image in 3 places ( B, G and R )
  //vector<Mat> bgr_planes;
  //split( src, bgr_planes );

  /// Establish the number of bins
  int histSize = 256;

  /// Set the ranges ( for B,G,R) )
  float range[] = { 0, 256 } ;
  const float* histRange = { range };

  bool uniform = true; bool accumulate = false;

  Mat b_hist;


  /// Compute the histograms:

  calcHist( &src1, 1, 0, Mat(), b_hist, 1, &histSize, &histRange, uniform, accumulate );


  // Draw the histograms for B, G and R
  int hist_w = 512; int hist_h = 400;
  int bin_w = cvRound( (double) hist_w/histSize );

  Mat histImage( hist_h, hist_w, CV_8UC3, Scalar( 0,0,0) );

  /// Normalize the result to [ 0, histImage.rows ]
  normalize(b_hist, b_hist, 0, histImage.rows, NORM_MINMAX, -1, Mat() );

  /// Draw the histogram
  for( int i = 1; i < histSize; i++ )
  {
      line( histImage, Point( bin_w*(i-1), hist_h - cvRound(b_hist.at<float>(i-1)) ) ,
                       Point( bin_w*(i), hist_h - cvRound(b_hist.at<float>(i)) ),
                       Scalar( 255, 0, 0), 2, 8, 0  );
  }

  /// Display
  namedWindow("Histgram", CV_WINDOW_AUTOSIZE );
  imshow("Histgram", histImage );
waitKey(0);
}