How to get OpenCV to store HSV in Matlab notation [0-1]?

edit

^^ if you want [0..1] BGR range, it also needs a 1./255 scale factor in convertTo()

Thank you @berak I missed that!

hehe, still not right, you need a double as denominator, not an int, just try: cerr << (int(1)/255) << endl; (sorry, should have highlited that better above)

I don't really understand how to include the above mentioned line in my code, just copy pasting gives me errors. Could you write the whole convertTO line?

@zvonimirb, it should work now as in the answer above ;)

@berak@Balaji R This still didn't solve my problem, as Hue still appears to be in the 0-180 range. Saturation and Value seem fine. This is my code and output.

Mat pictureBGR;

    pictureBGR = imread("picture1.jpg", CV_LOAD_IMAGE_COLOR); 

    Mat pictureBGR_32;
    pictureBGR.convertTo(pictureBGR_32, CV_32FC3, 1.0/255.0);

    Mat pictureHSV;
    cvtColor(pictureBGR_32, pictureHSV, COLOR_BGR2HSV);

    std::cout << "Hue: "<< pictureHSV.at<float>(0,0) << std::endl;
    std::cout << "Saturation: "<< pictureHSV.at<float>(0,1) << std::endl;
    std::cout << "Value:"<< pictureHSV.at<float>(0,2) << std::endl;

Output:

Hue: 30
Saturation: 0.318182
Value:0.517647

Do you have any ideas why?

Have you tried COLOR_BGR2HSV_FULL?

Yes, it didn't make any difference to the output.

The latest edit should probably work. I did it like this though:

Mat pictureBGR;

    pictureBGR = imread("slika1.jpg", CV_LOAD_IMAGE_COLOR); 

    namedWindow( "Display Image", CV_WINDOW_AUTOSIZE );
    imshow( "Display Image", pictureBGR );

    Mat pictureHSV;
    cvtColor(pictureBGR, pictureHSV, COLOR_BGR2HSV);

    int size [2] = {pictureHSV.rows, pictureHSV.cols}; 
    std::cout << size[0] << " x " << size[1] <<std::endl;

    std::vector<Mat> pictureH_S_V;
    split(pictureHSV, pictureH_S_V); //razdvajamo HSV u tri kanala, H, S i V

    pictureH_S_V[0].convertTo(pictureH_S_V[0], CV_32FC3, 1.0/179.0); 
    pictureH_S_V[1].convertTo(pictureH_S_V[1], CV_32FC3, 1.0/255.0);

Thanks.

Hope this answer helps! Please accept the answer if this solves your problem!