--- /dev/null
+
+///////////////////////////////////////////////////////////////////////////
+// This program is free software: you can redistribute it and/or modify //
+// it under the terms of the version 3 of the GNU General Public License //
+// as published by the Free Software Foundation. //
+// //
+// This program 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 this program. If not, see <http://www.gnu.org/licenses/>. //
+// //
+// Written by Francois Fleuret, (C) IDIAP //
+// Contact <francois.fleuret@idiap.ch> for comments & bug reports //
+///////////////////////////////////////////////////////////////////////////
+
+#ifndef MATERIALS_H
+#define MATERIALS_H
+
+#include "misc.h"
+#include "rich_image.h"
+#include "pi_feature.h"
+#include "pi_referential.h"
+#include "labelled_image_pool.h"
+#include "labelled_image.h"
+#include "pose_cell_set.h"
+#include "pose_cell_hierarchy.h"
+#include "detector.h"
+
+void write_pool_images_with_poses_and_referentials(LabelledImagePool *pool,
+ Detector *detector);
+
+void write_one_pi_feature_png(char *filename,
+ LabelledImage *image,
+ PoseCellHierarchy *hierarchy,
+ int nb_target,
+ int level,
+ PiFeature *pf);
+
+void write_image_with_detections(const char *filename,
+ LabelledImage *image,
+ PoseCellSet *detections,
+ int level);
+
+#endif