/ocr/ocrservice/jni/hydrogen/include/leptonica/jbclass.h
http://eyes-free.googlecode.com/ · C++ Header · 122 lines · 60 code · 12 blank · 50 comment · 0 complexity · 266f129828f28aeba14e46eb6dbdb9bc 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_JBCLASS_H
- #define LEPTONICA_JBCLASS_H
- /*
- * jbclass.h
- *
- * JbClasser
- * JbData
- */
- /* The JbClasser struct holds all the data accumulated during the
- * classification process that can be used for a compressed
- * jbig2-type representation of a set of images. This is created
- * in an initialization process and added to as the selected components
- * on each successive page are analyzed. */
- struct JbClasser
- {
- struct Sarray *safiles; /* input page image file names */
- l_int32 method; /* JB_RANKHAUS, JB_CORRELATION */
- l_int32 components; /* JB_CONN_COMPS, JB_CHARACTERS or */
- /* JB_WORDS */
- l_int32 maxwidth; /* max component width allowed */
- l_int32 maxheight; /* max component height allowed */
- l_int32 npages; /* number of pages already processed */
- l_int32 baseindex; /* number of components already processed */
- /* on fully processed pages */
- struct Numa *nacomps; /* number of components on each page */
- l_int32 sizehaus; /* size of square struct element for haus */
- l_float32 rankhaus; /* rank val of haus match, each way */
- l_float32 thresh; /* thresh value for correlation score */
- l_float32 weightfactor; /* corrects thresh value for heaver */
- /* components; use 0 for no correction */
- struct Numa *naarea; /* w * h of each template, without extra */
- /* border pixels */
- l_int32 w; /* max width of original src images */
- l_int32 h; /* max height of original src images */
- l_int32 nclass; /* current number of classes */
- l_int32 keep_pixaa; /* If zero, pixaa isn't filled */
- struct Pixaa *pixaa; /* instances for each class; unbordered */
- struct Pixa *pixat; /* templates for each class; bordered */
- /* and not dilated */
- struct Pixa *pixatd; /* templates for each class; bordered */
- /* and dilated */
- struct NumaHash *nahash; /* Hash table to find templates by size */
- struct Numa *nafgt; /* fg areas of undilated templates; */
- /* only used for rank < 1.0 */
- struct Pta *ptac; /* centroids of all bordered cc */
- struct Pta *ptact; /* centroids of all bordered template cc */
- struct Numa *naclass; /* array of class ids for each component */
- struct Numa *napage; /* array of page nums for each component */
- struct Pta *ptaul; /* array of UL corners at which the */
- /* template is to be placed for each */
- /* component */
- struct Pta *ptall; /* similar to ptaul, but for LL corners */
- };
- typedef struct JbClasser JBCLASSER;
- /* The JbData struct holds all the data required for
- * the compressed jbig-type representation of a set of images.
- * The data can be written to file, read back, and used
- * to regenerate an approximate version of the original,
- * which differs in two ways from the original:
- * (1) It uses a template image for each c.c. instead of the
- * original instance, for each occurrence on each page.
- * (2) It discards components with either a height or width larger
- * than the maximuma, given here by the lattice dimensions
- * used for storing the templates. */
- struct JbData
- {
- struct Pix *pix; /* template composite for all classes */
- l_int32 npages; /* number of pages */
- l_int32 w; /* max width of original page images */
- l_int32 h; /* max height of original page images */
- l_int32 nclass; /* number of classes */
- l_int32 latticew; /* lattice width for template composite */
- l_int32 latticeh; /* lattice height for template composite */
- struct Numa *naclass; /* array of class ids for each component */
- struct Numa *napage; /* array of page nums for each component */
- struct Pta *ptaul; /* array of UL corners at which the */
- /* template is to be placed for each */
- /* component */
- };
- typedef struct JbData JBDATA;
- /* Classifier methods */
- enum {
- JB_RANKHAUS = 0,
- JB_CORRELATION = 1
- };
- /* For jbGetComponents(): type of component to extract from images */
- enum {
- JB_CONN_COMPS = 0,
- JB_CHARACTERS = 1,
- JB_WORDS = 2
- };
- /* These parameters are used for naming the two files
- * in which the jbig2-like compressed data is stored. */
- #define JB_TEMPLATE_EXT ".templates.png"
- #define JB_DATA_EXT ".data"
- #endif /* LEPTONICA_JBCLASS_H */