2 * svrt is the ``Synthetic Visual Reasoning Test'', an image
3 * generator for evaluating classification performance of machine
4 * learning systems, humans and primates.
6 * Copyright (c) 2009 Idiap Research Institute, http://www.idiap.ch/
7 * Written by Francois Fleuret <francois.fleuret@idiap.ch>
9 * This file is part of svrt.
11 * svrt is free software: you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License version 3 as
13 * published by the Free Software Foundation.
15 * svrt is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with pysvrt. If not, see <http://www.gnu.org/licenses/>.
25 #include "vision_problem_10.h"
28 VisionProblem_10::VisionProblem_10() { }
30 void VisionProblem_10::generate(int label, Vignette *vignette) {
32 int xs[nb_shapes], ys[nb_shapes];
38 scalar_t alpha = random_uniform_0_1() * 2 * M_PI;
39 scalar_t radius = random_uniform_0_1() * Vignette::width / 2;
40 scalar_t xc = random_uniform_0_1() * Vignette::width;
41 scalar_t yc = random_uniform_0_1() * Vignette::height;
42 for(int n = 0; n < nb_shapes; n++) {
43 xs[n] = int(xc + part_size/2 +
44 radius * sin(alpha + n * 2 * M_PI / scalar_t(nb_shapes)));
45 ys[n] = int(yc + part_size/2 +
46 radius * cos(alpha + n * 2 * M_PI / scalar_t(nb_shapes)));
49 for(int n = 0; n < nb_shapes; n++) {
50 xs[n] = int(random_uniform_0_1() * Vignette::width);
51 ys[n] = int(random_uniform_0_1() * Vignette::height);
54 } while(cluttered_shapes(part_size, nb_shapes, xs, ys));
60 for(int n = 0; n < nb_shapes; n++) {
62 shape.randomize(part_size / 2, part_hole_size / 2);
64 error |= shape.overwrites(vignette, xs[n], ys[n]);
66 shape.draw(n, vignette, xs[n], ys[n]);