histogram.h Source File

00001 #include "trees.h"
00002 
00003 #define HIST_BLOCK_DIM           64    /* Block size                          */
00004 #define HIST_RESOL               256   /* Histogram resolution                */
00005 #define MAG_PERCENTILE  (double)(0.25) /* Rth percentile */
00006 #define LOCAL_DEVN               25    /* Tolerable deviation of local 
00007                                           orientation from global orientation */
00008 #define DIR_TOL                  25    /* Direction tolerance for pixel
00009                                           elimination                         */
00010 #define SEARCH_TOL               10    /* Search tolerance in Edge tracking   */
00011 
00012 typedef struct {
00013     int edge;                    /* Reserved for later use                    */
00014     int bin;                     /* Local gradient direction - resolved       */
00015     int cbin;                    /* Local gradient direction - computed       */
00016     int numpixels;               /* Number of pixels from ROI in the block    */
00017     int mag[HIST_RESOL];         /* Magnitude histogram                       */
00018     int dir[HIST_RESOL];         /* Direction histogram                       */
00019     double r;                    /* r                                         */
00020     int per;                     /* rth percentile                            */
00021 } HISTOGRAM;
00022 
00023 /*----------------------------------------------------------------------------*/
00024 
00025 extern void HIST_INIT (HISTOGRAM *);
00026 extern void HIST_MAG (IMAGE_BYTE *, MOSAIC_INDEX *, HISTOGRAM *, HISTOGRAM **, int, int);
00027 extern void HIST_RTH_PERCENTILE (HISTOGRAM  *, HISTOGRAM  **, double, int, int);
00028 extern void HIST_DIR (IMAGE_BYTE *, IMAGE_BYTE *, MOSAIC_INDEX *, HISTOGRAM *, HISTOGRAM **, int, int); 
00029 extern void HIST_ORIENTATION (HISTOGRAM *, HISTOGRAM **, int, int);
00030 extern int  HIST_DIR_OF_EDGE_NEIGHBOUR (HISTOGRAM *, HISTOGRAM **, int, int, int, int);
00031 extern void HIST_RESOLVE (HISTOGRAM *, HISTOGRAM **, int, int);
00032 extern int  HIST_NUM_RING_NEIGH(IMAGE_BYTE *, MOSAIC_INDEX *, int, int, int);
00033 extern void HIST_SUPPRESS (IMAGE_BYTE *, IMAGE_BYTE *, MOSAIC_INDEX *, HISTOGRAM **);
00034 extern int  HIST_FIND_MAX_NEIGH (IMAGE_BYTE *, IMAGE_BYTE *, MOSAIC_INDEX *, int, int, int *, int *);
00035 extern int  HIST_NUM_NEIGH (IMAGE_BYTE *, MOSAIC_INDEX *, int, int);
00036 extern void MOSAIC_BYTE_SUPPRESS (IMAGE_BYTE *, MOSAIC_INDEX *, IMAGE_BYTE *, IMAGE_BYTE *, HISTOGRAM *, HISTOGRAM ***);