mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-12-29 03:48:10 +08:00
109d1c8f21
git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk@286 d0cd1f9f-072b-0410-8dd7-cf729c803f20
93 lines
3.9 KiB
C
93 lines
3.9 KiB
C
/**********************************************************************
|
|
* File: fixxht.h (Formerly fixxht.h)
|
|
* Description: Improve x_ht and look out for case inconsistencies
|
|
* Author: Phil Cheatle
|
|
* Created: Thu Aug 5 14:11:08 BST 1993
|
|
*
|
|
* (C) Copyright 1992, Hewlett-Packard Ltd.
|
|
** Licensed under the Apache License, Version 2.0 (the "License");
|
|
** you may not use this file except in compliance with the License.
|
|
** You may obtain a copy of the License at
|
|
** http://www.apache.org/licenses/LICENSE-2.0
|
|
** Unless required by applicable law or agreed to in writing, software
|
|
** distributed under the License is distributed on an "AS IS" BASIS,
|
|
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
** See the License for the specific language governing permissions and
|
|
** limitations under the License.
|
|
*
|
|
**********************************************************************/
|
|
|
|
#ifndef FIXXHT_H
|
|
#define FIXXHT_H
|
|
|
|
#include "varable.h"
|
|
#include "statistc.h"
|
|
#include "pageres.h"
|
|
#include "notdll.h"
|
|
|
|
extern double_VAR_H (x_ht_fraction_of_caps_ht, 0.7,
|
|
"Fract of cps ht est of xht");
|
|
extern double_VAR_H (x_ht_variation, 0.35,
|
|
"Err band as fract of caps/xht dist");
|
|
extern double_VAR_H (x_ht_sub_variation, 0.5,
|
|
"Err band as fract of caps/xht dist");
|
|
extern BOOL_VAR_H (rej_trial_ambigs, TRUE,
|
|
"reject x-ht ambigs when under trial");
|
|
extern BOOL_VAR_H (x_ht_conservative_ambigs, FALSE,
|
|
"Dont rely on ambigs + maxht");
|
|
extern BOOL_VAR_H (x_ht_check_est, TRUE, "Cross check estimates");
|
|
extern BOOL_VAR_H (x_ht_case_flip, FALSE, "Flip or reject suspect case");
|
|
extern BOOL_VAR_H (x_ht_include_dodgy_blobs, TRUE,
|
|
"Include blobs with possible noise?");
|
|
extern BOOL_VAR_H (x_ht_limit_flip_trials, TRUE,
|
|
"Dont do trial flips when ambigs are close to xht?");
|
|
extern BOOL_VAR_H (rej_use_check_block_occ, TRUE,
|
|
"Analyse rejection behaviour");
|
|
extern STRING_VAR_H (chs_non_ambig_caps_ht,
|
|
"!#$%&()/12346789?ABDEFGHIKLNQRT[]\\bdfhkl",
|
|
"Reliable ascenders");
|
|
extern STRING_VAR_H (chs_x_ht, "acegmnopqrsuvwxyz", "X height chars");
|
|
extern STRING_VAR_H (chs_non_ambig_x_ht, "aenqr", "reliable X height chars");
|
|
extern STRING_VAR_H (chs_ambig_caps_x, "cCmMoO05sSuUvVwWxXzZ",
|
|
"X ht or caps ht chars");
|
|
extern STRING_VAR_H (chs_bl_ambig_caps_x, "pPyY",
|
|
" Caps or descender ambigs");
|
|
extern STRING_VAR_H (chs_caps_ht,
|
|
"!#$%&()/0123456789?ABCDEFGHIJKLMNOPQRSTUVWXYZ[]\\bdfhkl{|}",
|
|
"Ascender chars");
|
|
extern STRING_VAR_H (chs_desc, "gjpqy", "Descender chars");
|
|
extern STRING_VAR_H (chs_non_ambig_bl,
|
|
"!#$%&01246789?ABCDEFGHIKLMNORSTUVWXYZabcdehiklmnorstuvwxz",
|
|
"Reliable baseline chars");
|
|
extern STRING_VAR_H (chs_odd_top, "ijt", "Chars with funny ascender region");
|
|
extern STRING_VAR_H (chs_odd_bot, "()35JQ[]\\/{}|", "Chars with funny base");
|
|
extern STRING_VAR_H (chs_bl,
|
|
"!#$%&()/01246789?ABCDEFGHIJKLMNOPRSTUVWXYZ[]\\abcdefhiklmnorstuvwxz{}",
|
|
"Baseline chars");
|
|
extern STRING_VAR_H (chs_non_ambig_desc, "gq", "Reliable descender chars");
|
|
void re_estimate_x_ht( //improve for 1 word
|
|
WERD_RES *word_res, //word to do
|
|
float *trial_x_ht //new match value
|
|
);
|
|
void check_blob_occ(char *proposed_char,
|
|
inT16 blob_ht_above_baseline,
|
|
float x_ht,
|
|
float caps_ht,
|
|
char *confirmed_char);
|
|
float estimate_from_stats(STATS &stats);
|
|
void improve_estimate(WERD_RES *word_res,
|
|
float &est_x_ht,
|
|
float &est_caps_ht,
|
|
STATS &x_ht,
|
|
STATS &caps_ht);
|
|
void reject_ambigs( //rej any accepted xht ambig chars
|
|
WERD_RES *word);
|
|
//xht ambig ht stats
|
|
void est_ambigs(WERD_RES *word_res,
|
|
STATS &stats,
|
|
float *ambig_lc_x_est, //xht est
|
|
float *ambig_uc_caps_est //caps est
|
|
);
|
|
BOOL8 dodgy_blob(PBLOB *blob);
|
|
#endif
|