[Dclib-devel] Get wrong mmod_rect coords

[Ben G. <ben...@gm...>]

Hi,
I'm using the the mmod_faces_detection example and I'm trying to get the
faces rectangles coordinates with no luck, here is what I'm doing:
std::vector<rectangle> getFacesVec(matrix<rgb_pixel> img)
{
net_type net;
    deserialize("mmod_human_face_detector.dat") >> net;

    std::vector<rectangle> r;

    // Upsampling the image will allow us to detect smaller faces but will
cause the
    // program to use more RAM and run longer.
    while(img.size() < 1800*1800)
        pyramid_up(img);

    // Note that you can process a bunch of images in a std::vector at once
and it runs
    // much faster, since this will form mini-batches of images and
therefore get
    // better parallelism out of your GPU hardware.  However, all the
images must be
    // the same size.  To avoid this requirement on images being the same
size we
    // process them individually in this example.

    // We will also use a face landmarking model to align faces to a
standard pose:  (see face_landmark_detection_ex.cpp for an introduction)
    auto dets = net(img);
    for (auto&& d : dets) {
    r.push_back(d.rect);
    }
    return r;
}

....
faces = getFacesVec(img);
for (auto f : faces) {
cout << "Rect left: " << f.left() << endl;
cout << "Rect right: " << f.right() << endl;
cout << "Rect top: " << f.top() << endl;
cout << "Rect bottom: " << f.bottom() << endl;
cout << "Rect width: " << f.width() << endl;
cout << "Rect height: " << f.height() << endl;

cv::Rect roi(f.left(), f.top() , f.right(), f.bottom());
cout << "Trying to print cropped face" << endl;
cout << "X = " << roi.x << " Y = " << roi.y << " Width = " << roi.width <<
" Height = " << roi.height << endl;
cv::Mat crop = m(roi);
sprintf(s, "%d.jpg", i++);
cv::imwrite(s, crop);
}
and I'm getting coords out of the image scope
like this:
Mat rows: 432 Mat cols: 768
Rect left: 1068
Rect right: 1914
Rect top: 480
Rect bottom: 1325
Rect width: 847
Rect height: 846

What's I'm doing wrong?

Regards,
Ben