| /********************************************************************** |
| * to_spacing |
| * |
| * Compute fuzzy word spacing thresholds for each row. |
| **********************************************************************/ |
| |
| #ifndef TOSPACE_H |
| #define TOSPACE_H |
| |
| #include "blobbox.h" |
| #include "gap_map.h" |
| #include "statistc.h" |
| #include "notdll.h" |
| extern BOOL_VAR_H (tosp_old_to_method, FALSE, "Space stats use prechopping?"); |
| extern BOOL_VAR_H (tosp_only_use_prop_rows, TRUE, |
| "Block stats to use fixed pitch rows?"); |
| extern BOOL_VAR_H (tosp_use_pre_chopping, FALSE, |
| "Space stats use prechopping?"); |
| extern BOOL_VAR_H (tosp_old_to_bug_fix, FALSE, |
| "Fix suspected bug in old code"); |
| extern BOOL_VAR_H (tosp_block_use_cert_spaces, TRUE, |
| "Only stat OBVIOUS spaces"); |
| extern BOOL_VAR_H (tosp_row_use_cert_spaces, TRUE, |
| "Only stat OBVIOUS spaces"); |
| extern BOOL_VAR_H (tosp_narrow_blobs_not_cert, TRUE, |
| "Only stat OBVIOUS spaces"); |
| extern BOOL_VAR_H (tosp_row_use_cert_spaces1, TRUE, |
| "Only stat OBVIOUS spaces"); |
| extern BOOL_VAR_H (tosp_recovery_isolated_row_stats, TRUE, |
| "Use row alone when inadequate cert spaces"); |
| extern BOOL_VAR_H (tosp_only_small_gaps_for_kern, FALSE, "Better guess"); |
| extern BOOL_VAR_H (tosp_all_flips_fuzzy, FALSE, "Pass ANY flip to context?"); |
| extern BOOL_VAR_H (tosp_fuzzy_limit_all, TRUE, |
| "Dont restrict kn->sp fuzzy limit to tables"); |
| extern BOOL_VAR_H (tosp_stats_use_xht_gaps, TRUE, |
| "Use within xht gap for wd breaks"); |
| extern BOOL_VAR_H (tosp_use_xht_gaps, TRUE, |
| "Use within xht gap for wd breaks"); |
| extern BOOL_VAR_H (tosp_only_use_xht_gaps, FALSE, |
| "Only use within xht gap for wd breaks"); |
| extern BOOL_VAR_H (tosp_rule_9_test_punct, FALSE, |
| "Dont chng kn to space next to punct"); |
| extern BOOL_VAR_H (tosp_flip_fuzz_kn_to_sp, TRUE, "Default flip"); |
| extern BOOL_VAR_H (tosp_flip_fuzz_sp_to_kn, TRUE, "Default flip"); |
| extern BOOL_VAR_H (tosp_improve_thresh, FALSE, |
| "Enable improvement heuristic"); |
| extern INT_VAR_H (tosp_debug_level, 0, "Debug data"); |
| extern INT_VAR_H (tosp_enough_space_samples_for_median, 3, |
| "or should we use mean"); |
| extern INT_VAR_H (tosp_redo_kern_limit, 10, |
| "No.samples reqd to reestimate for row"); |
| extern INT_VAR_H (tosp_few_samples, 40, |
| "No.gaps reqd with 1 large gap to treat as a table"); |
| extern INT_VAR_H (tosp_short_row, 20, |
| "No.gaps reqd with few cert spaces to use certs"); |
| extern INT_VAR_H (tosp_sanity_method, 1, "How to avoid being silly"); |
| extern double_VAR_H (tosp_threshold_bias1, 0, |
| "how far between kern and space?"); |
| extern double_VAR_H (tosp_threshold_bias2, 0, |
| "how far between kern and space?"); |
| extern double_VAR_H (tosp_narrow_fraction, 0.3, |
| "Fract of xheight for narrow"); |
| extern double_VAR_H (tosp_narrow_aspect_ratio, 0.48, |
| "narrow if w/h less than this"); |
| extern double_VAR_H (tosp_wide_fraction, 0.52, "Fract of xheight for wide"); |
| extern double_VAR_H (tosp_wide_aspect_ratio, 0.0, |
| "wide if w/h less than this"); |
| extern double_VAR_H (tosp_fuzzy_space_factor, 0.6, |
| "Fract of xheight for fuzz sp"); |
| extern double_VAR_H (tosp_fuzzy_space_factor1, 0.5, |
| "Fract of xheight for fuzz sp"); |
| extern double_VAR_H (tosp_fuzzy_space_factor2, 0.72, |
| "Fract of xheight for fuzz sp"); |
| extern double_VAR_H (tosp_gap_factor, 0.83, "gap ratio to flip sp->kern"); |
| extern double_VAR_H (tosp_kern_gap_factor1, 2.0, |
| "gap ratio to flip kern->sp"); |
| extern double_VAR_H (tosp_kern_gap_factor2, 1.3, |
| "gap ratio to flip kern->sp"); |
| extern double_VAR_H (tosp_kern_gap_factor3, 2.5, |
| "gap ratio to flip kern->sp"); |
| extern double_VAR_H (tosp_ignore_big_gaps, -1, "xht multiplier"); |
| extern double_VAR_H (tosp_ignore_very_big_gaps, 3.5, "xht multiplier"); |
| extern double_VAR_H (tosp_rep_space, 1.6, "rep gap multiplier for space"); |
| extern double_VAR_H (tosp_enough_small_gaps, 0.65, |
| "Fract of kerns reqd for isolated row stats"); |
| extern double_VAR_H (tosp_table_kn_sp_ratio, 2.25, |
| "Min difference of kn & sp in table"); |
| extern double_VAR_H (tosp_table_xht_sp_ratio, 0.33, |
| "Expect spaces bigger than this"); |
| extern double_VAR_H (tosp_table_fuzzy_kn_sp_ratio, 3.0, |
| "Fuzzy if less than this"); |
| extern double_VAR_H (tosp_fuzzy_kn_fraction, 0.5, "New fuzzy kn alg"); |
| extern double_VAR_H (tosp_fuzzy_sp_fraction, 0.5, "New fuzzy sp alg"); |
| extern double_VAR_H (tosp_min_sane_kn_sp, 1.5, |
| "Dont trust spaces less than this time kn"); |
| extern double_VAR_H (tosp_init_guess_kn_mult, 2.2, |
| "Thresh guess - mult kn by this"); |
| extern double_VAR_H (tosp_init_guess_xht_mult, 0.28, |
| "Thresh guess - mult xht by this"); |
| extern double_VAR_H (tosp_max_sane_kn_thresh, 5.0, |
| "Multiplier on kn to limit thresh"); |
| extern double_VAR_H (tosp_flip_caution, 0.0, |
| "Dont autoflip kn to sp when large separation"); |
| extern double_VAR_H (tosp_large_kerning, 0.19, |
| "Limit use of xht gap with large kns"); |
| extern double_VAR_H (tosp_dont_fool_with_small_kerns, -1, |
| "Limit use of xht gap with odd small kns"); |
| extern double_VAR_H (tosp_near_lh_edge, 0, |
| "Dont reduce box if the top left is non blank"); |
| extern double_VAR_H (tosp_silly_kn_sp_gap, 0.2, |
| "Dont let sp minus kn get too small"); |
| extern double_VAR_H (tosp_pass_wide_fuzz_sp_to_context, 0.75, |
| "How wide fuzzies need context"); |
| void to_spacing( //set spacing |
| ICOORD page_tr, //topright of page |
| TO_BLOCK_LIST *blocks //blocks on page |
| ); |
| //DEBUG USE ONLY |
| void block_spacing_stats(TO_BLOCK *block, |
| GAPMAP *gapmap, |
| BOOL8 &old_text_ord_proportional, |
| inT16 &block_space_gap_width, //resulting estimate |
| inT16 &block_non_space_gap_width //resulting estimate |
| ); |
| //estimate for block |
| void row_spacing_stats(TO_ROW *row, |
| GAPMAP *gapmap, |
| inT16 block_idx, |
| inT16 row_idx, |
| inT16 block_space_gap_width, |
| inT16 block_non_space_gap_width //estimate for block |
| ); |
| //estimate for block |
| void old_to_method(TO_ROW *row, |
| STATS *all_gap_stats, |
| STATS *space_gap_stats, |
| STATS *small_gap_stats, |
| inT16 block_space_gap_width, |
| inT16 block_non_space_gap_width //estimate for block |
| ); |
| BOOL8 isolated_row_stats(TO_ROW *row, |
| GAPMAP *gapmap, |
| STATS *all_gap_stats, |
| BOOL8 suspected_table, |
| inT16 block_idx, |
| inT16 row_idx); |
| inT16 stats_count_under(STATS *stats, inT16 threshold); |
| void improve_row_threshold(TO_ROW *row, STATS *all_gap_stats); |
| ROW *make_prop_words( //find lines |
| TO_ROW *row, //row to make |
| FCOORD rotation //for drawing |
| ); |
| BOOL8 make_a_word_break( //decide on word break |
| TO_ROW *row, //row being made |
| TBOX blob_box, //for next_blob //how many blanks? |
| inT16 prev_gap, |
| TBOX prev_blob_box, |
| inT16 real_current_gap, |
| inT16 within_xht_current_gap, |
| TBOX next_blob_box, |
| inT16 next_gap, |
| uinT8 &blanks, |
| BOOL8 &fuzzy_sp, |
| BOOL8 &fuzzy_non); |
| BOOL8 narrow_blob(TO_ROW *row, TBOX blob_box); |
| BOOL8 wide_blob(TO_ROW *row, TBOX blob_box); |
| BOOL8 suspected_punct_blob(TO_ROW *row, TBOX box); |
| //A COPY FOR PEEKING |
| void peek_at_next_gap(TO_ROW *row, |
| BLOBNBOX_IT box_it, |
| TBOX &next_blob_box, |
| inT16 &next_gap, |
| inT16 &next_within_xht_gap); |
| void mark_gap( //Debug stuff |
| TBOX blob, //blob following gap |
| inT16 rule, // heuristic id |
| inT16 prev_gap, |
| inT16 prev_blob_width, |
| inT16 current_gap, |
| inT16 next_blob_width, |
| inT16 next_gap); |
| float find_mean_blob_spacing(WERD *word); |
| BOOL8 ignore_big_gap(TO_ROW *row, |
| inT32 row_length, |
| GAPMAP *gapmap, |
| inT16 left, |
| inT16 right); |
| TBOX reduced_box_next( //get bounding box |
| TO_ROW *row, //current row |
| BLOBNBOX_IT *it //iterator to blobds |
| ); |
| TBOX reduced_box_for_blob(BLOBNBOX *blob, TO_ROW *row, inT16 *left_above_xht); |
| #endif |
