#include <iostream.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <math.h>
#include <signal.h>
#include <opencv/cv.h>
#include <opencv/highgui.h>


int
main()
{
  
  CvvImage im;			// create image variable
  im.Load("bridge.jpg");	// load image from file system
  cvNamedWindow("main", 0);	// create display window
  im.Show("main");		// show image in window

  CvvImage imBW;		// create image variable
  imBW.Create(im.Width(), im.Height(), 8);	// allocate
  cvCvtColor(im.GetImage(), imBW.GetImage(),CV_BGR2GRAY); // BW

  cvNamedWindow("bw", 0);	// create display window
  imBW.Show("bw");		// show image in window

  CvvImage imCanny;		// create image variable
  imCanny.Create(imBW.Width(), imBW.Height(), 8); // allocate
  cvCanny(imBW.GetImage(), imCanny.GetImage(), 25, 75, 3); // Canny edges

  cvNamedWindow("canny", 0);	// create display window
  imCanny.Show("canny");	// show image in window
  imCanny.Save("canny.jpg");		// save the result

  for (;;) 
    cvWaitKey(0);		 // (necessary for resizing+displaying window)
}