/usr/include/leptonica/jbclass.h is in libleptonica-dev 1.74.1-1.
This file is owned by root:root, with mode 0o644.
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- Copyright (C) 2001 Leptonica. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the following
- disclaimer in the documentation and/or other materials
- provided with the distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANY
- CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*====================================================================*/
#ifndef LEPTONICA_JBCLASS_H
#define LEPTONICA_JBCLASS_H
/*!
* \file jbclass.h
*
* JbClasser
* JbData
*/
/*!
* <pre>
* 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.
* </pre>
*/
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 components already processed */
/*!< on fully processed pages */
struct Numa *nacomps; /*!< number of components on each page */
l_int32 sizehaus; /*!< size of square struct elem 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 L_DnaHash *dahash; /*!< 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;
/*!
* <pre>
* 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.
* </pre>
*/
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 */
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