2 ///////////////////////////////////////////////////////////////////////////
3 // This program is free software: you can redistribute it and/or modify //
4 // it under the terms of the version 3 of the GNU General Public License //
5 // as published by the Free Software Foundation. //
7 // This program is distributed in the hope that it will be useful, but //
8 // WITHOUT ANY WARRANTY; without even the implied warranty of //
9 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU //
10 // General Public License for more details. //
12 // You should have received a copy of the GNU General Public License //
13 // along with this program. If not, see <http://www.gnu.org/licenses/>. //
15 // Written by Francois Fleuret //
16 // (C) Idiap Research Institute //
18 // Contact <francois.fleuret@idiap.ch> for comments & bug reports //
19 ///////////////////////////////////////////////////////////////////////////
23 A pool of images is used to avoid having too many images in memory
24 at the same time. It can be either a file, or a subset of another
25 pool of images (see the subclasses).
29 #ifndef LABELLED_IMAGE_POOL_H
30 #define LABELLED_IMAGE_POOL_H
33 #include "labelled_image.h"
35 class LabelledImagePool {
37 virtual ~LabelledImagePool();
38 virtual int nb_images() = 0;
39 // grab_image _DOES NOT_ build the rich structure of the grabbed
40 // image. One has to call compute_rich_structure() explicitely for
42 virtual LabelledImage *grab_image(int n_image) = 0;
43 virtual void release_image(int n_image) = 0;