Leptonica 1.68
C Image Processing Library

watershed.h

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00001 /*====================================================================*
00002  -  Copyright (C) 2001 Leptonica.  All rights reserved.
00003  -  This software is distributed in the hope that it will be
00004  -  useful, but with NO WARRANTY OF ANY KIND.
00005  -  No author or distributor accepts responsibility to anyone for the
00006  -  consequences of using this software, or for whether it serves any
00007  -  particular purpose or works at all, unless he or she says so in
00008  -  writing.  Everyone is granted permission to copy, modify and
00009  -  redistribute this source code, for commercial or non-commercial
00010  -  purposes, with the following restrictions: (1) the origin of this
00011  -  source code must not be misrepresented; (2) modified versions must
00012  -  be plainly marked as such; and (3) this notice may not be removed
00013  -  or altered from any source or modified source distribution.
00014  *====================================================================*/
00015 
00016 #ifndef  LEPTONICA_WATERSHED_H
00017 #define  LEPTONICA_WATERSHED_H
00018 
00019 /* 
00020  *  watershed.h
00021  *
00022  *     Simple data structure to hold watershed data.
00023  *     All data here is owned by the L_WShed and must be freed.
00024  */
00025 
00026 struct L_WShed 
00027 {
00028     struct Pix    *pixs;        /* clone of input 8 bpp pixs                */
00029     struct Pix    *pixm;        /* clone of input 1 bpp seed (marker) pixm  */
00030     l_int32        mindepth;    /* minimum depth allowed for a watershed    */
00031     struct Pix    *pixlab;      /* 16 bpp label pix                         */
00032     struct Pix    *pixt;        /* scratch pix for computing wshed regions  */
00033     void         **lines8;      /* line ptrs for pixs                       */
00034     void         **linem1;      /* line ptrs for pixm                       */
00035     void         **linelab32;   /* line ptrs for pixlab                     */
00036     void         **linet1;      /* line ptrs for pixt                       */
00037     struct Pixa   *pixad;       /* result: 1 bpp pixa of watersheds         */
00038     struct Pta    *ptas;        /* pta of initial seed pixels               */
00039     struct Numa   *nasi;        /* numa of seed indicators; 0 if completed  */
00040     struct Numa   *nash;        /* numa of initial seed heights             */
00041     struct Numa   *namh;        /* numa of initial minima heights           */
00042     struct Numa   *nalevels;    /* result: numa of watershed levels         */
00043     l_int32        nseeds;      /* number of seeds (markers)                */
00044     l_int32        nother;      /* number of minima different from seeds    */
00045     l_int32       *lut;         /* lut for pixel indices                    */
00046     struct Numa  **links;       /* back-links into lut, for updates         */
00047     l_int32        arraysize;   /* size of links array                      */
00048     l_int32        debug;       /* set to 1 for debug output                */
00049 };
00050 typedef struct L_WShed L_WSHED;
00051 
00052 #endif  /* LEPTONICA_WATERSHED_H */
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