Moonguard's profile - activity

Yeah I try to think like that too. Its a bit confusing though.

Thanks, its an openCV documentation. You can find the example here: http://docs.opencv.org/modules/imgproc/doc/feature_detection.html

I simply did not understand the pointer part, so I do not know why they used -> instead of.

#include <cv.h>
#include <highgui.h>
#include <math.h>

using namespace cv;

int main(int argc, char** argv)
{
    Mat img, gray;
    if( argc != 2 && !(img=imread(argv[1], 1)).data)
        return -1;
    cvtColor(img, gray, CV_BGR2GRAY);
    // smooth it, otherwise a lot of false circles may be detected
    GaussianBlur( gray, gray, Size(9, 9), 2, 2 );
    vector<Vec3f> circles;
    HoughCircles(gray, circles, CV_HOUGH_GRADIENT,
                 2, **gray->rows/4**, 200, 100 );
    for( size_t i = 0; i < circles.size(); i++ )
    {
         Point center(cvRound(circles[i][0]), cvRound(circles[i][1]));
         int radius = cvRound(circles[i][2]);
         // draw the circle center
         circle( img, center, 3, Scalar(0,255,0), -1, 8, 0 );
         // draw the circle outline
         circle( img, center, radius, Scalar(0,0,255), 3, 8, 0 );
    }
    namedWindow( "circles", 1 );
    imshow( "circles", img );
    return 0;
}

In this example what is "->" sign at "gray->rows/4 " part and what does it do? I am writing a program using that method and I simply copied that part but I have no idea what that is and I would like to know it.

Rude? He is the one who is being rude by telling me what to do. There is also a reason why I use openCV 2.2.2 and I already told him that. He still insists, instead of trying to help and simply making posts and karma. In addition, the code works perfectly fine with so much bugged version of OpenCV 2.2.2 while it does not work with so called "stable" release openCV 2.4.10. Therefore, I could not care less that you warn me, instead you two have been warned.

just shut up please.

I have to use it because I am following a tutorial.

Hello, I am using Windows 8 64bit and I have downloaded OpenCV 2.2.2 version for object detection.(http://sourceforge.net/projects/opencvlibrary/files/opencv-win/2.2/ Third one for visual studio) I will also download Visual Studio 2010 express later. Even though, I have selected add path to all users at the install it did not add it. Can you tell me how to add path in system properties? I have looked at some tutorials but in this version it adds automatically. Other versions are a bit different and I am confused.

Also, I know that this openCv version has only 32 bit binaries so I know that I have to choose Visual Studio 32 bit template when I am create my project . However, will that be a problem for my 64bit system?

How does that even remotely answers my question?

I have already tried that and found abselutely nothing. Thats why I asked here.

Hello, I am a beginner programmer and I really need your help. I would like to learn how to make a program that recognizes a given image such as a tree, an animal or a keyboard. When I show my camera on it it will recognizes the shown image and say it. It doesn't have to recognize everything, a couple of objects would be enough. Can you help me how to create a program like that because I have abselutely no idea. One person thought that I want the whole code or something like that, thats entirely wrong. I simply want to know if there are tutorials about this subject.

Thanks...