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176 lines
8.1 KiB
C
176 lines
8.1 KiB
C
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/**********************************************************************
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* File: reject.h (Formerly reject.h)
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* Description: Rejection functions used in tessedit
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* Author: Phil Cheatle
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* Created: Wed Sep 23 16:50:21 BST 1992
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*
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* (C) Copyright 1992, Hewlett-Packard Ltd.
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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** http://www.apache.org/licenses/LICENSE-2.0
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*
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**********************************************************************/
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#ifndef REJECT_H
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#define REJECT_H
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#include "varable.h"
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#include "pageres.h"
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#include "notdll.h"
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extern INT_VAR_H (tessedit_reject_mode, 5, "Rejection algorithm");
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extern INT_VAR_H (tessedit_ok_mode, 5, "Acceptance decision algorithm");
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extern BOOL_VAR_H (tessedit_use_nn, TRUE, "");
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extern BOOL_VAR_H (tessedit_rejection_debug, FALSE, "Adaption debug");
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extern BOOL_VAR_H (tessedit_rejection_stats, FALSE, "Show NN stats");
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extern BOOL_VAR_H (tessedit_flip_0O, TRUE, "Contextual 0O O0 flips");
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extern double_VAR_H (tessedit_lower_flip_hyphen, 1.5,
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"Aspect ratio dot/hyphen test");
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extern double_VAR_H (tessedit_upper_flip_hyphen, 1.8,
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"Aspect ratio dot/hyphen test");
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extern BOOL_VAR_H (rej_trust_doc_dawg, FALSE,
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"Use DOC dawg in 11l conf. detector");
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extern BOOL_VAR_H (rej_1Il_use_dict_word, FALSE, "Use dictword test");
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extern BOOL_VAR_H (rej_1Il_trust_permuter_type, TRUE, "Dont double check");
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extern BOOL_VAR_H (one_ell_conflict_default, TRUE,
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"one_ell_conflict default");
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extern BOOL_VAR_H (show_char_clipping, FALSE, "Show clip image window?");
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extern BOOL_VAR_H (nn_debug, FALSE, "NN DEBUGGING?");
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extern BOOL_VAR_H (nn_reject_debug, FALSE, "NN DEBUG each char?");
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extern BOOL_VAR_H (nn_lax, FALSE, "Use 2nd rate matches");
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extern BOOL_VAR_H (nn_double_check_dict, FALSE, "Double check");
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extern BOOL_VAR_H (nn_conf_double_check_dict, TRUE,
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"Double check for confusions");
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extern BOOL_VAR_H (nn_conf_1Il, TRUE, "NN use 1Il conflicts");
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extern BOOL_VAR_H (nn_conf_Ss, TRUE, "NN use Ss conflicts");
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extern BOOL_VAR_H (nn_conf_hyphen, TRUE, "NN hyphen conflicts");
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extern BOOL_VAR_H (nn_conf_test_good_qual, FALSE, "NN dodgy 1Il cross check");
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extern BOOL_VAR_H (nn_conf_test_dict, TRUE, "NN dodgy 1Il cross check");
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extern BOOL_VAR_H (nn_conf_test_sensible, TRUE, "NN dodgy 1Il cross check");
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extern BOOL_VAR_H (nn_conf_strict_on_dodgy_chs, TRUE,
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"Require stronger NN match");
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extern double_VAR_H (nn_dodgy_char_threshold, 0.99, "min accept score");
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extern INT_VAR_H (nn_conf_accept_level, 4, "NN accept dodgy 1Il matches? ");
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extern INT_VAR_H (nn_conf_initial_i_level, 3,
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"NN accept initial Ii match level ");
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extern BOOL_VAR_H (no_unrej_dubious_chars, TRUE,
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"Dubious chars next to reject?");
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extern BOOL_VAR_H (no_unrej_no_alphanum_wds, TRUE,
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"Stop unrej of non A/N wds?");
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extern BOOL_VAR_H (no_unrej_1Il, FALSE, "Stop unrej of 1Ilchars?");
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extern BOOL_VAR_H (rej_use_tess_accepted, TRUE,
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"Individual rejection control");
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extern BOOL_VAR_H (rej_use_tess_blanks, TRUE, "Individual rejection control");
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extern BOOL_VAR_H (rej_use_good_perm, TRUE, "Individual rejection control");
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extern BOOL_VAR_H (rej_use_sensible_wd, FALSE, "Extend permuter check");
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extern BOOL_VAR_H (rej_alphas_in_number_perm, FALSE, "Extend permuter check");
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extern double_VAR_H (rej_whole_of_mostly_reject_word_fract, 0.85,
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"if >this fract");
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extern INT_VAR_H (rej_mostly_reject_mode, 1,
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"0-never, 1-afterNN, 2-after new xht");
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extern double_VAR_H (tessed_fullstop_aspect_ratio, 1.2,
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"if >this fract then reject");
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extern INT_VAR_H (net_image_width, 40, "NN input image width");
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extern INT_VAR_H (net_image_height, 36, "NN input image height");
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extern INT_VAR_H (net_image_x_height, 22, "NN input image x_height");
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extern INT_VAR_H (tessedit_image_border, 2, "Rej blbs near image edge limit");
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extern INT_VAR_H (net_bl_nodes, 20, "Number of baseline nodes");
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extern double_VAR_H (nn_reject_threshold, 0.5, "NN min accept score");
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extern double_VAR_H (nn_reject_head_and_shoulders, 0.6,
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"top scores sep factor");
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extern STRING_VAR_H (ok_single_ch_non_alphanum_wds, "-?\075",
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"Allow NN to unrej");
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extern STRING_VAR_H (ok_repeated_ch_non_alphanum_wds, "-?*\075",
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"Allow NN to unrej");
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extern STRING_VAR_H (conflict_set_I_l_1, "Il1[]", "Il1 conflict set");
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extern STRING_VAR_H (conflict_set_S_s, "Ss$", "Ss conflict set");
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extern STRING_VAR_H (conflict_set_hyphen, "-_~", "hyphen conflict set");
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extern STRING_VAR_H (dubious_chars_left_of_reject, "!'+`()-./\\<>;:^_,~\"",
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"Unreliable chars");
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extern STRING_VAR_H (dubious_chars_right_of_reject, "!'+`()-./\\<>;:^_,~\"",
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"Unreliable chars");
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extern INT_VAR_H (min_sane_x_ht_pixels, 8,
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"Reject any x-ht lt or eq than this");
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void set_done( //set done flag
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WERD_RES *word,
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INT16 pass);
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void make_reject_map( //make rej map for wd //detailed results
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WERD_RES *word,
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BLOB_CHOICE_LIST_CLIST *blob_choices,
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ROW *row,
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INT16 pass //1st or 2nd?
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);
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void reject_blanks(WERD_RES *word);
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void reject_I_1_L(WERD_RES *word);
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//detailed results
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void reject_poor_matches(WERD_RES *word, BLOB_CHOICE_LIST_CLIST *blob_choices);
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float compute_reject_threshold( //compute threshold //detailed results
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BLOB_CHOICE_LIST_CLIST *blob_choices);
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int sort_floats( //qsort function
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const void *arg1, //ptrs to floats
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const void *arg2);
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void reject_edge_blobs(WERD_RES *word);
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BOOL8 one_ell_conflict(WERD_RES *word_res, BOOL8 update_map);
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INT16 first_alphanum_pos(const char *word);
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INT16 alpha_count(const char *word);
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BOOL8 word_contains_non_1_digit(const char *word);
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BOOL8 test_ambig_word( //test for ambiguity
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WERD_RES *word);
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//original word
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BOOL8 ambig_word(const char *start_word,
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char *temp_word, //alterable copy
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INT16 test_char_pos //idx to char to alter
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);
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const char *char_ambiguities(char c);
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#ifndef EMBEDDED
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void test_ambigs(const char *word);
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#endif
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void nn_recover_rejects(WERD_RES *word, ROW *row);
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void nn_match_word( //Match a word
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WERD_RES *word,
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ROW *row);
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//of character
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INT16 nn_match_char(IMAGE &scaled_image,
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float baseline_pos, //rel to scaled_image
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BOOL8 dict_word, //part of dict wd?
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BOOL8 checked_dict_word, //part of dict wd?
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BOOL8 sensible_word, //part acceptable str?
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BOOL8 centre, //not at word ends?
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BOOL8 good_quality_word, //initial segmentation
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char tess_ch //confirm this?
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);
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INT16 evaluate_net_match(char top,
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float top_score,
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char next,
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float next_score,
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char tess_ch,
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BOOL8 dict_word,
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BOOL8 checked_dict_word,
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BOOL8 sensible_word,
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BOOL8 centre,
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BOOL8 good_quality_word);
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void dont_allow_dubious_chars(WERD_RES *word);
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void dont_allow_1Il(WERD_RES *word);
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INT16 count_alphanums( //how many alphanums
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WERD_RES *word);
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void reject_mostly_rejects( //rej all if most rejectd
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WERD_RES *word);
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BOOL8 repeated_nonalphanum_wd(WERD_RES *word, ROW *row);
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BOOL8 repeated_ch_string(const char *rep_ch_str);
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INT16 safe_dict_word(const char *s);
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void flip_hyphens(WERD_RES *word);
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void flip_0O(WERD_RES *word);
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BOOL8 non_O_upper(char c);
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BOOL8 non_0_digit(char c);
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#endif
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