#include<stdio.h>

#include<iostream>

#include<opencv2\opencv.hpp>

using namespace std;

using namespace cv;

IplImage *g_psrcimage,*g_pcannyima;

void on_trackbar(int threshold)

{

    cvCanny(g_psrcimage,g_pcannyima,threshold,threshold*,);

    cvShowImage("picture",g_pcannyima);

}

int main()

{

    g_psrcimage = cvLoadImage("D:\\1.jpg",CV_LOAD_IMAGE_GRAYSCALE);

    g_pcannyima = cvCreateImage(cvGetSize(g_psrcimage), IPL_DEPTH_8U, );

    int nthresholdedge=;

    cvCreateTrackbar("","",&nthresholdedge,,on_trackbar);

    cvShowImage("",g_psrcimage);

    on_trackbar();

    cvWaitKey();

    return ;

}