prewitt_operator_edge_detection

prewitt_edge.cpp

/*
 * eyeExtract.cpp
 *
 *  Created on: Nov 10, 2013
 *      Author: sumit4iit
 */
#include<iostream>
#include "cv.h"
#include "highgui.h"
#include <cstring>
using namespace cv;
using namespace std;

int main()
{
 string path = "res/download.jpg";
 Mat src = imread(path,CV_LOAD_IMAGE_GRAYSCALE);

 if(!src.data)
 {
  cout<<"fail\n";
  return -1;
 }

 Mat destX,destY;
 Point anchor = Point(-1,-1);
 double delta = 0;
 int ddepth = -1;

 // Prewitt_operator
 Mat prewittX = ( Mat_<float>(3,3)<<
				-1,0,1,
				-1,0,1,
				-1,0,1) ;

 Mat prewittY = ( Mat_<float>(3,3)<<
		 	 	 1,1,1,
		 	 	 0,0,0,
				-1,-1,-1);

 // Calling filter2D
 filter2D(src,destX,ddepth,prewittX,anchor,delta,BORDER_DEFAULT);
 filter2D(src,destY,ddepth,prewittY,anchor,delta,BORDER_DEFAULT);

 namedWindow("original",CV_WINDOW_AUTOSIZE);
 namedWindow("prewittX",CV_WINDOW_AUTOSIZE);
 namedWindow("prewittY",CV_WINDOW_AUTOSIZE);
 namedWindow("prewittX+Y",CV_WINDOW_AUTOSIZE);
 imshow("prewittX",destX);
 imshow("prewittY",destY);
 imshow("prewittX+Y",destX+destY);
 imshow("original",src);

 waitKey(0);
 return 0;
}