| // Copyright (C) 2013 Davis E. King ([email protected]) | |
| // License: Boost Software License See LICENSE.txt for the full license. | |
| namespace dlib | |
| { | |
| // ---------------------------------------------------------------------------------------- | |
| inline void draw_surf_points ( | |
| image_window& win, | |
| const std::vector<surf_point>& sp | |
| ) | |
| { | |
| for (unsigned long i = 0; i < sp.size(); ++i) | |
| { | |
| const unsigned long radius = static_cast<unsigned long>(sp[i].p.scale*3); | |
| const point center(sp[i].p.center); | |
| point direction = center + point(radius,0); | |
| // SURF descriptors are rotated by sp[i].angle. So we want to include a visual | |
| // indication of this rotation on our overlay. | |
| direction = rotate_point(center, direction, sp[i].angle); | |
| win.add_overlay(image_display::overlay_circle(center, radius, rgb_pixel(0,255,0))); | |
| // Draw a line showing the orientation of the SURF descriptor. | |
| win.add_overlay(center, direction, rgb_pixel(255,0,0)); | |
| } | |
| } | |
| // ---------------------------------------------------------------------------------------- | |
| } | |