#include <iostream> // Pour std::cout et std::cin
#include <opencv/highgui.h>
#include <opencv/cv.h>

IplImage *img;
IplImage *imgnvg;
IplImage *imgmed;
int r=255, g=255, b=255; // Par défaut, RGB = (255, 255, 255), soit blanc.
int ord1, abs1,abs2, ord2,ord3;
bool can_write = false;

void refresh()
{
    cvShowImage("mon image2", imgnvg);
}

void setR(int new_value)
{
    r = new_value;
}
void setG(int new_value)
{
    g = new_value;
}
void setB(int new_value)
{
    b = new_value;
}


void mouseEvents(int event, int x, int y, int flags, void* param)
{
    switch(event)
    {
        case CV_EVENT_LBUTTONDOWN:
        	can_write = true;
        	ord1=y;
		    abs1=x;
        break;

        case CV_EVENT_LBUTTONUP:
            	can_write = false;
            	abs2=x;
        break;

        case CV_EVENT_RBUTTONDOWN:
        	can_write = true;

        case CV_EVENT_RBUTTONUP:
                can_write = false;
                ord3=y;
        break;

	case CV_EVENT_MOUSEMOVE:
                if(can_write)
                cvCircle(imgnvg, cvPoint(x, y), 1, cvScalar(b, g, r));
       	break;
    }
    refresh();
}


int main()
{
    	img = cvLoadImage("/home/sami/Images/lena.jpeg", CV_LOAD_IMAGE_COLOR);
    	IplImage *imgnvg = cvCreateImage(cvGetSize(img), img->depth, 1);
    	cvConvertImage(img, imgnvg);

        IplImage *imgmed= cvCloneImage(imgnvg);

    	cvNamedWindow("mon image", CV_WINDOW_AUTOSIZE);
        cvNamedWindow("mon image2", CV_WINDOW_AUTOSIZE);
        cvNamedWindow("mon image3", CV_WINDOW_AUTOSIZE);

    	cvCreateTrackbar("red", "mon image2", &r, 255, setR);
    	cvCreateTrackbar("bleu", "mon image2", &b, 255, setR);
    	cvCreateTrackbar("green", "mon image2", &g, 255, setR);

    	cvSetMouseCallback("mon image2", mouseEvents);
        cvShowImage("mon image", img);
        cvShowImage("mon image2", imgnvg);
        cvShowImage("mon image3", imgmed);

CvRect rect = cvRect(ord1, abs1, abs2-abs1, ord3-ord2);
cvSetImageROI(imgnvg, rect);
cvSmooth(imgnvg, imgmed, CV_MEDIAN, 5);

cvWaitKey(0);

cvDestroyAllWindows();
cvReleaseImage(&img);
cvReleaseImage(&imgnvg);
cvReleaseImage(&imgmed);


    return 0;
}