local_feature.h Source File

00001 
00014 /* This library is free software; you can redistribute it and/or
00015    modify it under the terms of the GNU Lesser General Public
00016    License as published by the Free Software Foundation; either
00017    version 2.1 of the License, or (at your option) any later version.
00018 
00019    This library is distributed in the hope that it will be useful,
00020    but WITHOUT ANY WARRANTY; without even the implied warranty of
00021    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00022    Lesser General Public License for more details.
00023 
00024    You should have received a copy of the GNU Lesser General Public
00025    License along with this library; if not, write to the Free Software
00026    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00027 */
00028 
00029 #ifndef _GAN_LOCAL_FEATURE_H
00030 #define _GAN_LOCAL_FEATURE_H
00031 
00032 #include <gandalf/common/misc_defs.h>
00033 #include <gandalf/image/image_defs.h>
00034 #include <gandalf/linalg/2x3matrix.h>
00035 
00036 #ifdef __cplusplus
00037 extern "C" {
00038 #endif
00039 
00053 typedef struct Gan_LocalFeatureMap
00054 {
00056    unsigned yblocks, xblocks;
00057 
00060    unsigned ystep, xstep;
00061 
00063    unsigned bsize2;
00064 
00066    Gan_Image nfeatures;
00067 
00070    Gan_Image index;
00071 
00073    Gan_Bool alloc;
00074 } Gan_LocalFeatureMap;
00075 
00079 typedef struct Gan_LocalFeatureMapParams
00080 {
00083    unsigned ystep, xstep;
00084 
00086    unsigned bsize;
00087 } Gan_LocalFeatureMapParams;
00088 
00089  Gan_LocalFeatureMap *
00090       gan_local_feature_map_form ( Gan_LocalFeatureMap *pmap,
00091                                    unsigned height, unsigned width,
00092                                    Gan_LocalFeatureMapParams *pms );
00093  void gan_local_feature_map_free ( Gan_LocalFeatureMap *pmap );
00094  Gan_Bool gan_local_feature_map_clear ( Gan_LocalFeatureMap *pmap,
00095                                        unsigned height, unsigned width,
00096                                        Gan_LocalFeatureMapParams *pms );
00097  Gan_Bool gan_local_feature_point_add ( Gan_LocalFeatureMap *pmap,
00098                                        unsigned r, unsigned c,
00099                                        unsigned index );
00100  Gan_Bool gan_local_feature_line_add ( Gan_LocalFeatureMap *pmap,
00101                                       unsigned r1, unsigned c1,
00102                                       unsigned r2, unsigned c2,
00103                                       unsigned index );
00104  Gan_Bool gan_local_feature_map_set_indices ( Gan_LocalFeatureMap *pmap );
00105  Gan_Bool gan_local_feature_map_find_block ( Gan_LocalFeatureMap *pmap,
00106                                             double y, double x,
00107                                             Gan_Matrix23 *Ai,
00108                                             unsigned *cr, unsigned *cc );
00109 
00127  Gan_LocalFeatureMap *
00128  gan_local_feature_map_alloc ( unsigned height, unsigned width,
00129                                Gan_LocalFeatureMapParams *pms );
00130 
00139 #ifdef __cplusplus
00140 }
00141 #endif
00142 
00143 #endif /* #ifndef _GAN_LOCAL_FEATURE_H */