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Hi all, I am able to get the pixel coordinate by clicking on image with setmousecallback function. I want to return the pixel value of that coordinate. But I am getting some error. Please, check the below code. xyz matrix contain the depth information. Thank you.

setMouseCallback("cascade_image", onMouse, &rxyz);

static void onMouse(int event, int i, int j, int flags, void* param, Mat &xyz) {

if (event == EVENT_LBUTTONDOWN)
{
    short val = xyz.at< short >(i,j); 
    cout << "x= " << i << " y= " << j << "val= "<<val<< endl;
}

}

Hi all, I am able to get the pixel coordinate by clicking on image with setmousecallback function. I want to return the pixel value of that coordinate. But I am getting some error. Please, check the below code. xyz matrix contain the depth information. Thank you.

setMouseCallback("cascade_image", onMouse, &rxyz);
&rxyz);
  
static void onMouse(int event, int i, int j, int flags, void* param, Mat &xyz)
{{
  
 if (event == EVENT_LBUTTONDOWN)
 {
  short val = xyz.at< short >(i,j);
  cout << "x= " << i << " y= " << j << "val= "<<val<< endl;
 }
}
  
}