muhammet_Ali's profile - activity

There is no executable file in package.You need to move unpacked files to C:/OpenCV ( or wherever you want ). After that if you want to use VS C++ , you need same make arrangements.When it is needed you can show path of include files like this : WhereYouSaved/opencv/include/bin etc.

I ve tried this way and it has worked.I ve used rough arrangments but you can put it into the form you want by using same thinking.

IplImage * img = cvLoadImage("c:/lena.jpg");
IplImage * out =cvCreateImage(cvSize(50,50),img->depth,img->nChannels);
cvZero(out);

out->origin=img->origin;
out->imageData=img->imageData;
out->widthStep=img->widthStep;

uchar * Iptr=(uchar*) (img->imageData+rec.y*img->widthStep+rec.x*img->nChannels);
for(int y=0;y<50;y++)
{
    uchar * Optr=(uchar*) (out->imageData+y*out->widthStep);
    uchar * Iptr=(uchar*) (img->imageData+(y+100)*img->widthStep);
    for( int x=0;x<50;x++)
    {
        Optr[3*x+0]=Iptr[(x+100)*3+0];
        Optr[3*x+1]=Iptr[(x+100)*3+1];
        Optr[3*x+2]=Iptr[(x+100)*3+2];
    }

}

how can we do same thing by this way.I don t know where I am missing.

IplImage * img = cvLoadImage("c:/buk.jpg");
    IplImage * out =cvCreateImage(cvSize(50,50),img->depth,img->nChannels);
    cvZero(out);
    CvRect rec=cvRect(img->width/2-25,img->height/2-25,50,50);

    cvSetImageROI(img,rec);

    cvAdd(img,out,out);

Hello I am using VS 12 C++,and did OK all operations of my book so far.But in a point cvPyrsegmentation() function is appearing in the book but Intellisense is not recognizing cvPyrsegmentation() function.I ve included cv.h and highgui.h . I dont know what to do because all functions except this is working correctly.

yes it worked.Thank you very much.

When ı executed code program is not working correctly.I want to start to draw a rectangle when mouse lButton is clicked and finish drawing when lbutton is up. when moving the mouse ,nothing will happen but it have to increase width and height of box.The problem is exactly that: image appearing and first time ( sometimes 2 times ) I am drawing rectangle.but it doesn t seem on screen when I close image window it automatically appears with rectangle. So after restarting image window I can only have one or two rectangles.

Why are there only rectangles?

Why are they occuring when image window restarts?

#include<opencv\cv.h>
#include<opencv\highgui.h>

using namespace cv;
bool drawing=false;
CvRect box;

void drawbox(IplImage * img,CvRect rect )
{
    cvRectangle(img,cvPoint(box.x,box.y),cvPoint(box.x+box.width,box.y+box.height),cvScalar(0,0,200));
}

void mouse( int even,int x,int y,int flag,void * param)
{
    IplImage* out = ( IplImage * ) param;

    switch (even)
    {
    case CV_EVENT_LBUTTONDOWN:
        drawing=true;
        box=cvRect(x,y,0,0);
        break;
    case CV_EVENT_MOUSEMOVE:
        if (drawing)
        {
            if( x>box.x )
                box.width=x-box.x;
            else
                box.width=box.x-x;
            if(y>box.y)
                box.height=y-box.y;
            else
                box.height=box.y-y;
        }
        break;
    case EVENT_LBUTTONUP:
        drawing = false;
        drawbox(out,box);
        break;
    }
}

void main()
{
    IplImage * img= cvLoadImage("c:/lena.jpg");
    box=cvRect(-1,-1,0,0);
    cvNamedWindow("pencere");
    cvSetMouseCallback("pencere",mouse,(void*) img);
    while (true)
    {
        cvShowImage("pencere",img);
        if(drawing) drawbox(img,box); // what changes if I delete this line
        cvWaitKey();
    }
}

Hi I am new OpenCv learner and I ve got problem coding this example on VS2012 C++

void main() { IplImage * src =cvLoadImage("c:/lena.jpg");

int x=50;
int y=50;
int width= 100;
int height = 100;
int add =150;


cvSetImageROI(src,cvRect(x,y,width,height));

cvAdd(src,cvScalar(add),src); // in books here seems to be true but I am getting error
// no conversion suits to convert from CvScalar to const CvArr* 

cvResetImageROI(src);

cvShowImage("wind",src);


    cvWaitKey();

system("pause");

}

if anyone help I will be very appreciate,Thanks

I think the problem is not special issue for openCV.it is some kind of general problem of VS. maybe this can be helpful http://answers.microsoft.com/en-us/windows/forum/windows_7-windows_programs/trying-to-open-computer-management-the-program/5c9d301a-2191-4edb-916e-5e4958558090