void add_overlay_rect ( image_window& win, const rectangle& rect, const rgb_pixel& color ) { win.add_overlay(rect, color); }
void add_overlay_parts ( image_window& win, const full_object_detection& detection, const rgb_pixel& color ) { win.add_overlay(render_face_detections(detection, color)); }
void add_overlay_drect ( image_window& win, const drectangle& drect, const rgb_pixel& color ) { rectangle rect(drect.left(), drect.top(), drect.right(), drect.bottom()); win.add_overlay(rect, color); }