/ocr/ocrservice/jni/hydrogen/include/leptonica/ccbord.h
http://eyes-free.googlecode.com/ · C++ Header · 103 lines · 34 code · 11 blank · 58 comment · 0 complexity · dc0761671a60849c089722f8f1154fba MD5 · raw file
- /*====================================================================*
- - Copyright (C) 2001 Leptonica. All rights reserved.
- - This software is distributed in the hope that it will be
- - useful, but with NO WARRANTY OF ANY KIND.
- - No author or distributor accepts responsibility to anyone for the
- - consequences of using this software, or for whether it serves any
- - particular purpose or works at all, unless he or she says so in
- - writing. Everyone is granted permission to copy, modify and
- - redistribute this source code, for commercial or non-commercial
- - purposes, with the following restrictions: (1) the origin of this
- - source code must not be misrepresented; (2) modified versions must
- - be plainly marked as such; and (3) this notice may not be removed
- - or altered from any source or modified source distribution.
- *====================================================================*/
- #ifndef LEPTONICA_CCBORD_H
- #define LEPTONICA_CCBORD_H
- /*
- * ccbord.h
- *
- * CCBord: represents a single connected component
- * CCBorda: an array of CCBord
- */
- /* Use in ccbaStepChainsToPixCoords() */
- enum {
- CCB_LOCAL_COORDS = 1,
- CCB_GLOBAL_COORDS = 2
- };
- /* Use in ccbaGenerateSPGlobalLocs() */
- enum {
- CCB_SAVE_ALL_PTS = 1,
- CCB_SAVE_TURNING_PTS = 2
- };
- /* CCBord contains:
- *
- * (1) a minimally-clipped bitmap of the component (pix),
- * (2) a boxa consisting of:
- * for the primary component:
- * (xul, yul) pixel location in global coords
- * (w, h) of the bitmap
- * for the hole components:
- * (x, y) in relative coordinates in primary component
- * (w, h) of the hole border (which is 2 pixels
- * larger in each direction than the hole itself)
- * (3) a pta ('start') of the initial border pixel location for each
- * closed curve, all in relative coordinates of the primary
- * component. This is given for the primary component,
- * followed by the hole components, if any.
- * (4) a refcount of the ccbord; used internally when a ccbord
- * is accessed from a ccborda (array of ccbord)
- * (5) a ptaa for the chain code for the border in relative
- * coordinates, where the first pta is the exterior border
- * and all other pta are for interior borders (holes)
- * (6) a ptaa for the global pixel loc rendition of the border,
- * where the first pta is the exterior border and all other
- * pta are for interior borders (holes).
- * This is derived from the local or step chain code.
- * (7) a numaa for the chain code for the border as orientation
- * directions between successive border pixels, where
- * the first numa is the exterior border and all other
- * numa are for interior borders (holes). This is derived
- * from the local chain code. The 8 directions are 0 - 7.
- * (8) a pta for a single chain for each c.c., comprised of outer
- * and hole borders, plus cut paths between them, all in
- * local coords.
- * (9) a pta for a single chain for each c.c., comprised of outer
- * and hole borders, plus cut paths between them, all in
- * global coords.
- */
- struct CCBord
- {
- struct Pix *pix; /* component bitmap (min size) */
- struct Boxa *boxa; /* regions of each closed curve */
- struct Pta *start; /* initial border pixel locations */
- l_int32 refcount; /* number of handles; start at 1 */
- struct Ptaa *local; /* ptaa of chain pixels (local) */
- struct Ptaa *global; /* ptaa of chain pixels (global) */
- struct Numaa *step; /* numaa of chain code (step dir) */
- struct Pta *splocal; /* pta of single chain (local) */
- struct Pta *spglobal; /* pta of single chain (global) */
- };
- typedef struct CCBord CCBORD;
- struct CCBorda
- {
- struct Pix *pix; /* input pix (may be null) */
- l_int32 w; /* width of pix */
- l_int32 h; /* height of pix */
- l_int32 n; /* number of ccbord in ptr array */
- l_int32 nalloc; /* number of ccbord ptrs allocated */
- struct CCBord **ccb; /* ccb ptr array */
- };
- typedef struct CCBorda CCBORDA;
- #endif /* LEPTONICA_CCBORD_H */