X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?p=svrt.git;a=blobdiff_plain;f=vision_problem_16.cc;fp=vision_problem_16.cc;h=06b90469eec33433e8d4b480d25227ef44b0c9c9;hp=0000000000000000000000000000000000000000;hb=dfc7d0cd9b185a982b9f83d6d862824a62000aea;hpb=471b18a7f4e9cbdfb510f304260ec5e6baeee697

diff --git a/vision_problem_16.cc b/vision_problem_16.cc
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+/*
+ *  svrt is the ``Synthetic Visual Reasoning Test'', an image
+ *  generator for evaluating classification performance of machine
+ *  learning systems, humans and primates.
+ *
+ *  Copyright (c) 2009 Idiap Research Institute, http://www.idiap.ch/
+ *  Written by Francois Fleuret <francois.fleuret@idiap.ch>
+ *
+ *  This file is part of svrt.
+ *
+ *  svrt is free software: you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License version 3 as
+ *  published by the Free Software Foundation.
+ *
+ *  svrt is distributed in the hope that it will be useful, but
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with selector.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "vision_problem_16.h"
+#include "shape.h"
+
+VisionProblem_16::VisionProblem_16() { }
+
+void VisionProblem_16::generate(int label, Vignette *vignette) {
+  int error;
+
+  int nb_shapes = 6;
+  int xs[nb_shapes], ys[nb_shapes];
+  Shape shape1, shape2;
+  shape1.randomize(part_size / 2, hole_size / 2);
+  shape2.copy(&shape1);
+
+  if(label == 1) {
+    shape2.symmetrize(0.0, 1.0);
+  }
+
+  do {
+    vignette->clear();
+    error = 0;
+
+    // First half of the shapes are random
+    for(int n = 0; n < nb_shapes/2; n++) {
+      xs[n] = int(drand48() * (Vignette::width - part_size + 1)) + part_size/2;
+      ys[n] = int(drand48() * (Vignette::height - part_size + 1)) + part_size/2;
+      error |= shape1.overwrites(vignette, xs[n], ys[n]);
+      shape1.draw(vignette, xs[n], ys[n]);
+    }
+
+    for(int n = nb_shapes/2; n < nb_shapes; n++) {
+      xs[n] = Vignette::width - xs[n - nb_shapes/2];
+      ys[n] = ys[n - nb_shapes/2];
+      error |= shape2.overwrites(vignette, xs[n], ys[n]);
+      shape2.draw(vignette, xs[n], ys[n]);
+    }
+  } while(error);
+}