Create Custom OCR Parameters in C#
This guide explains how to use control parameters to modify the default OCR behavior. Use the SetVariable() method to set one parameter at a time. Setting parameters increases the accuracy for Japanese and Chinese languages.
The example below sets different parameters for OCR:
gdpictureOCR.SetVariable("chop_enable", "T"); gdpictureOCR.SetVariable("use_new_state_cost", "F"); gdpictureOCR.SetVariable("segment_segcost_rating", "F"); gdpictureOCR.SetVariable("enable_new_segsearch", "0"); gdpictureOCR.SetVariable("language_model_ngram_on", "0"); gdpictureOCR.SetVariable("textord_force_make_prop_words", "F"); gdpictureOCR.SetVariable("edges_max_children_per_outline", "40");
gdpictureOCR.SetVariable("chop_enable", "T") gdpictureOCR.SetVariable("use_new_state_cost", "F") gdpictureOCR.SetVariable("segment_segcost_rating", "F") gdpictureOCR.SetVariable("enable_new_segsearch", "0") gdpictureOCR.SetVariable("language_model_ngram_on", "0") gdpictureOCR.SetVariable("textord_force_make_prop_words", "F") gdpictureOCR.SetVariable("edges_max_children_per_outline", "40")
The following list contains all the OCR parameters with their default values and descriptions.
| Name | Value | Description |
|---|---|---|
| editor_image_xpos | 590 | Editor image X Pos |
| editor_image_ypos | 10 | Editor image Y Pos |
| editor_image_menuheight | 50 | Add to image height for menu bar |
| editor_image_word_bb_color | 7 | Word bounding box colour |
| editor_image_blob_bb_color | 4 | Blob bounding box colour |
| editor_image_text_color | 2 | Correct text colour |
| editor_dbwin_xpos | 50 | Editor debug window X Pos |
| editor_dbwin_ypos | 500 | Editor debug window Y Pos |
| editor_dbwin_height | 24 | Editor debug window height |
| editor_dbwin_width | 80 | Editor debug window width |
| editor_word_xpos | 60 | Word window X Pos |
| editor_word_ypos | 510 | Word window Y Pos |
| editor_word_height | 240 | Word window height |
| editor_word_width | 655 | Word window width |
| textord_debug_tabfind | 0 | Debug tab finding |
| textord_debug_bugs | 0 | Turn on output related to bugs in tab finding |
| textord_testregion_left | -1 | Left edge of debug reporting rectangle |
| textord_testregion_top | -1 | Top edge of debug reporting rectangle |
| textord_testregion_right | 2147483647 | Right edge of debug rectangle |
| textord_testregion_bottom | 2147483647 | Bottom edge of debug rectangle |
| textord_tabfind_show_partitions | 0 | Show partition bounds, waiting if > 1 |
| devanagari_split_debuglevel | 0 | Debug level for split shiro-rekha process. |
| edges_max_children_per_outline | 10 | Max number of children inside a character outline |
| edges_max_children_layers | 5 | Max layers of nested children inside a character outline |
| edges_children_per_grandchild | 10 | Importance ratio for chucking outlines |
| edges_children_count_limit | 45 | Max holes allowed in blob |
| edges_min_nonhole | 12 | Min pixels for potential char in box |
| edges_patharea_ratio | 40 | Max lensq/area for acceptable child outline |
| edges_maxedgelength | 16000 | Max steps in any outline |
| textord_fp_chop_error | 2 | Max allowed bending of chop cells |
| textord_tabfind_show_images | 0 | Show image blobs |
| textord_skewsmooth_offset | 2 | For smooth factor |
| textord_skewsmooth_offset2 | 1 | For smooth factor |
| textord_test_x | -1 | coord of test pt |
| textord_test_y | -1 | coord of test pt |
| textord_min_blobs_in_row | 4 | Min blobs before gradient counted |
| textord_spline_minblobs | 8 | Min blobs in each spline segment |
| textord_spline_medianwin | 6 | Size of window for spline segmentation |
| textord_max_blob_overlaps | 4 | Max number of blobs a big blob can overlap |
| textord_min_xheight | 10 | Min credible pixel xheight |
| textord_lms_line_trials | 12 | Number of linew fits to do |
| oldbl_holed_losscount | 10 | Max lost before fallback line used |
| pitsync_linear_version | 6 | Use new fast algorithm |
| pitsync_fake_depth | 1 | Max advance fake generation |
| textord_tabfind_show_strokewidths | 0 | Show stroke widths |
| textord_dotmatrix_gap | 3 | Max pixel gap for broken pixed pitch |
| textord_debug_block | 0 | Block to do debug on |
| textord_pitch_range | 2 | Max range test on pitch |
| textord_words_veto_power | 5 | Rows required to outvote a veto |
| wordrec_display_segmentations | 0 | Display Segmentations |
| classify_radius_gyr_min_man | 255 | Minimum Radius of Gyration Mantissa 0-255: |
| classify_radius_gyr_min_exp | 0 | Minimum Radius of Gyration Exponent 0-255: |
| classify_radius_gyr_max_man | 158 | Maximum Radius of Gyration Mantissa 0-255: |
| classify_radius_gyr_max_exp | 8 | Maximum Radius of Gyration Exponent 0-255: |
| classify_num_cp_levels | 3 | Number of Class Pruner Levels |
| image_default_resolution | 300 | Image resolution dpi |
| equationdetect_save_bi_image | 0 | Save input bi image |
| equationdetect_save_spt_image | 0 | Save special character image |
| equationdetect_save_seed_image | 0 | Save the seed image |
| equationdetect_save_merged_image | 0 | Save the merged image |
| textord_debug_images | 0 | Use greyed image background for debug |
| textord_debug_printable | 0 | Make debug windows printable |
| textord_space_size_is_variable | 0 | If true, word delimiter spaces are assumed to have variable width, even though characters have fixed pitch. |
| textord_tabfind_show_initial_partitions | 0 | Show partition bounds |
| textord_tabfind_show_reject_blobs | 0 | Show blobs rejected as noise |
| textord_tabfind_show_columns | 0 | Show column bounds |
| textord_tabfind_show_blocks | 0 | Show final block bounds |
| textord_tabfind_find_tables | 1 | run table detection |
| textord_tabfind_show_color_fit | 0 | Show stroke widths |
| devanagari_split_debugimage | 0 | Whether to create a debug image for split shiro-rekha process. |
| textord_show_fixed_cuts | 0 | Draw fixed pitch cell boundaries |
| edges_use_new_outline_complexity | 0 | Use the new outline complexity module |
| edges_debug | 0 | turn on debugging for this module |
| edges_children_fix | 0 | Remove boxy parents of char-like children |
| gapmap_debug | 0 | Say which blocks have tables |
| gapmap_use_ends | 0 | Use large space at start and end of rows |
| gapmap_no_isolated_quanta | 0 | Ensure gaps not less than 2quanta wide |
| textord_heavy_nr | 0 | Vigorously remove noise |
| textord_show_initial_rows | 0 | Display row accumulation |
| textord_show_parallel_rows | 0 | Display page correlated rows |
| textord_show_expanded_rows | 0 | Display rows after expanding |
| textord_show_final_rows | 0 | Display rows after final fitting |
| textord_show_final_blobs | 0 | Display blob bounds after pre-ass |
| textord_test_landscape | 0 | Tests refer to land/port |
| textord_parallel_baselines | 1 | Force parallel baselines |
| textord_straight_baselines | 0 | Force straight baselines |
| textord_old_baselines | 1 | Use old baseline algorithm |
| textord_old_xheight | 0 | Use old xheight algorithm |
| textord_fix_xheight_bug | 1 | Use spline baseline |
| textord_fix_makerow_bug | 1 | Prevent multiple baselines |
| textord_debug_xheights | 0 | Test xheight algorithms |
| textord_biased_skewcalc | 1 | Bias skew estimates with line length |
| textord_interpolating_skew | 1 | Interpolate across gaps |
| textord_new_initial_xheight | 1 | Use test xheight mechanism |
| textord_really_old_xheight | 0 | Use original wiseowl xheight |
| textord_oldbl_debug | 0 | Debug old baseline generation |
| textord_debug_baselines | 0 | Debug baseline generation |
| textord_oldbl_paradef | 1 | Use para default mechanism |
| textord_oldbl_split_splines | 1 | Split stepped splines |
| textord_oldbl_merge_parts | 1 | Merge suspect partitions |
| oldbl_corrfix | 1 | Improve correlation of heights |
| oldbl_xhfix | 0 | Fix bug in modes threshold for xheights |
| textord_ocropus_mode | 0 | Make baselines for ocropus |
| textord_tabfind_only_strokewidths | 0 | Only run stroke widths |
| textord_tabfind_vertical_text | 1 | Enable vertical detection |
| textord_tabfind_force_vertical_text | 0 | Force using vertical text page mode |
| textord_tabfind_vertical_horizontal_mix | 1 | find horizontal lines such as headers in vertical page mode |
| textord_tabfind_show_initialtabs | 0 | Show tab candidates |
| textord_tabfind_show_finaltabs | 0 | Show tab vectors |
| textord_dump_table_images | 0 | Paint table detection output |
| textord_show_tables | 0 | Show table regions |
| textord_tablefind_show_mark | 0 | Debug table marking steps in detail |
| textord_tablefind_show_stats | 0 | Show page stats used in table finding |
| textord_tablefind_recognize_tables | 0 | Enables the table recognizer for table layout and filtering. |
| textord_all_prop | 0 | All doc is proportial text |
| textord_debug_pitch_test | 0 | Debug on fixed pitch test |
| textord_disable_pitch_test | 0 | Turn off dp fixed pitch algorithm |
| textord_fast_pitch_test | 0 | Do even faster pitch algorithm |
| textord_debug_pitch_metric | 0 | Write full metric stuff |
| textord_show_row_cuts | 0 | Draw row-level cuts |
| textord_show_page_cuts | 0 | Draw page-level cuts |
| textord_pitch_cheat | 0 | Use correct answer for fixed/prop |
| textord_blockndoc_fixed | 0 | Attempt whole doc/block fixed pitch |
| textord_show_initial_words | 0 | Display separate words |
| textord_show_new_words | 0 | Display separate words |
| textord_show_fixed_words | 0 | Display forced fixed pitch words |
| textord_blocksall_fixed | 0 | Moan about prop blocks |
| textord_blocksall_prop | 0 | Moan about fixed pitch blocks |
| textord_blocksall_testing | 0 | Dump stats when moaning |
| textord_test_mode | 0 | Do current test |
| textord_pitch_scalebigwords | 0 | Scale scores on big words |
| textord_restore_underlines | 1 | Chop underlines & put back |
| textord_fp_chopping | 1 | Do fixed pitch chopping |
| textord_force_make_prop_words | 0 | Force proportional word segmentation on all rows |
| textord_chopper_test | 0 | Chopper is being tested. |
| wordrec_display_all_blobs | 0 | Display Blobs |
| wordrec_display_all_words | 0 | Display Words |
| wordrec_blob_pause | 0 | Blob pause |
| poly_debug | 0 | Debug old poly |
| poly_wide_objects_better | 1 | More accurate approx on wide things |
| wordrec_display_splits | 0 | Display splits |
| editor_image_win_name | EditorImage | Editor image window name |
| editor_dbwin_name | EditorDBWin | Editor debug window name |
| editor_word_name | BlnWords | BL normalized word window |
| editor_debug_config_file | Config file to apply to single words | |
| fx_debugfile | FXDebug | Name of debugfile |
| classify_font_name | UnknownFont | Default font name to be used in training |
| classify_training_file | MicroFeatures | Training file |
| debug_file | File to send tprintf output to | |
| textord_underline_threshold | 0.5 | Fraction of width occupied |
| edges_childarea | 0.5 | Min area fraction of child outline |
| edges_boxarea | 0.875 | Min area fraction of grandchild for box |
| textord_fp_chop_snap | 0.5 | Max distance of chop pt from vertex |
| gapmap_big_gaps | 1.75 | xht multiplier |
| textord_spline_shift_fraction | 0.02 | Fraction of line spacing for quad |
| textord_spline_outlier_fraction | 0.1 | Fraction of line spacing for outlier |
| textord_skew_ile | 0.5 | Ile of gradients for page skew |
| textord_skew_lag | 0.01 | Lag for skew on row accumulation |
| textord_linespace_iqrlimit | 0.2 | Max iqr/median for linespace |
| textord_width_limit | 8 | Max width of blobs to make rows |
| textord_chop_width | 1.5 | Max width before chopping |
| textord_expansion_factor | 1 | Factor to expand rows by in expand_rows |
| textord_overlap_x | 0.5 | Fraction of linespace for good overlap |
| textord_minxh | 0.25 | fraction of linesize for min xheight |
| textord_min_linesize | 1.25 | * blob height for initial linesize |
| textord_excess_blobsize | 1.3 | New row made if blob makes row this big |
| textord_occupancy_threshold | 0.4 | Fraction of neighbourhood |
| textord_underline_width | 2 | Multiple of line_size for underline |
| textord_min_blob_height_fraction | 0.75 | Min blob height/top to include blob top into xheight stats |
| textord_xheight_mode_fraction | 0.4 | Min pile height to make xheight |
| textord_ascheight_mode_fraction | 0.08 | Min pile height to make ascheight |
| textord_descheight_mode_fraction | 0.08 | Min pile height to make descheight |
| textord_ascx_ratio_min | 1.25 | Min cap/xheight |
| textord_ascx_ratio_max | 1.8 | Max cap/xheight |
| textord_descx_ratio_min | 0.25 | Min desc/xheight |
| textord_descx_ratio_max | 0.6 | Max desc/xheight |
| textord_xheight_error_margin | 0.1 | Accepted variation |
| oldbl_xhfract | 0.4 | Fraction of est allowed in calc |
| oldbl_dot_error_size | 1.26 | Max aspect ratio of a dot |
| textord_oldbl_jumplimit | 0.15 | X fraction for new partition |
| pitsync_joined_edge | 0.75 | Dist inside big blob for chopping |
| pitsync_offset_freecut_fraction | 0.25 | Fraction of cut for free cuts |
| textord_tabfind_vertical_text_ratio | 0.5 | Fraction of textlines deemed vertical to use vertical page mode |
| textord_tabfind_aligned_gap_fraction | 0.75 | Fraction of height used as a minimum gap for aligned blobs. |
| textord_tabvector_vertical_gap_fraction | 0.5 | max fraction of mean blob width allowed for vertical gaps in vertical text |
| textord_tabvector_vertical_box_ratio | 0.5 | Fraction of box matches required to declare a line vertical |
| textord_projection_scale | 0.2 | Ding rate for mid-cuts |
| textord_balance_factor | 1 | Ding rate for unbalanced char cells |
| textord_wordstats_smooth_factor | 0.05 | Smoothing gap stats |
| textord_width_smooth_factor | 0.1 | Smoothing width stats |
| textord_words_width_ile | 0.4 | Ile of blob widths for space est |
| textord_words_maxspace | 4 | Multiple of xheight |
| textord_words_default_maxspace | 3.5 | Max believable third space |
| textord_words_default_minspace | 0.6 | Fraction of xheight |
| textord_words_min_minspace | 0.3 | Fraction of xheight |
| textord_words_default_nonspace | 0.2 | Fraction of xheight |
| textord_words_initial_lower | 0.25 | Max inital cluster size |
| textord_words_initial_upper | 0.15 | Min initial cluster spacing |
| textord_words_minlarge | 0.75 | Fraction of valid gaps needed |
| textord_words_pitchsd_threshold | 0.04 | Pitch sync threshold |
| textord_words_def_fixed | 0.016 | Threshold for definite fixed |
| textord_words_def_prop | 0.09 | Threshold for definite prop |
| textord_pitch_rowsimilarity | 0.08 | Fraction of xheight for sameness |
| words_initial_lower | 0.5 | Max inital cluster size |
| words_initial_upper | 0.15 | Min initial cluster spacing |
| words_default_prop_nonspace | 0.25 | Fraction of xheight |
| words_default_fixed_space | 0.75 | Fraction of xheight |
| words_default_fixed_limit | 0.6 | Allowed size variance |
| textord_words_definite_spread | 0.3 | Non-fuzzy spacing region |
| textord_spacesize_ratiofp | 2.8 | Min ratio space/nonspace |
| textord_spacesize_ratioprop | 2 | Min ratio space/nonspace |
| textord_fpiqr_ratio | 1.5 | Pitch IQR/Gap IQR threshold |
| textord_max_pitch_iqr | 0.2 | Xh fraction noise in pitch |
| textord_fp_min_width | 0.5 | Min width of decent blobs |
| textord_underline_offset | 0.1 | Fraction of x to ignore |
| classify_cp_angle_pad_loose | 45 | Class Pruner Angle Pad Loose |
| classify_cp_angle_pad_medium | 20 | Class Pruner Angle Pad Medium |
| classify_cp_angle_pad_tight | 10 | CLass Pruner Angle Pad Tight |
| classify_cp_end_pad_loose | 0.5 | Class Pruner End Pad Loose |
| classify_cp_end_pad_medium | 0.5 | Class Pruner End Pad Medium |
| classify_cp_end_pad_tight | 0.5 | Class Pruner End Pad Tight |
| classify_cp_side_pad_loose | 2.5 | Class Pruner Side Pad Loose |
| classify_cp_side_pad_medium | 1.2 | Class Pruner Side Pad Medium |
| classify_cp_side_pad_tight | 0.6 | Class Pruner Side Pad Tight |
| classify_pp_angle_pad | 45 | Proto Pruner Angle Pad |
| classify_pp_end_pad | 0.5 | Proto Prune End Pad |
| classify_pp_side_pad | 2.5 | Proto Pruner Side Pad |
| classify_min_slope | 0.414214 | Slope below which lines are called horizontal |
| classify_max_slope | 2.41421 | Slope above which lines are called vertical |
| classify_norm_adj_midpoint | 32 | Norm adjust midpoint … |
| classify_norm_adj_curl | 2 | Norm adjust curl … |
| classify_pico_feature_length | 0.05 | Pico Feature Length |
| speckle_large_max_size | 0.3 | Max large speckle size |
| speckle_small_penalty | 10 | Small speckle penalty |
| speckle_large_penalty | 10 | Large speckle penalty |
| speckle_small_certainty | -1 | Small speckle certainty |
| ambigs_debug_level | 0 | Debug level for unichar ambiguities |
| tessedit_single_match | 0 | Top choice only from CP |
| classify_debug_level | 0 | Classify debug level |
| classify_norm_method | 1 | Normalization Method ... |
| matcher_debug_level | 0 | Matcher Debug Level |
| matcher_debug_flags | 0 | Matcher Debug Flags |
| classify_learning_debug_level | 0 | Learning Debug Level: |
| matcher_permanent_classes_min | 1 | Min # of permanent classes |
| matcher_min_examples_for_prototyping | 3 | Reliable Config Threshold |
| matcher_sufficient_examples_for_prototyping | 5 | Enable adaption even if the ambiguities have not been seen |
| classify_adapt_proto_threshold | 230 | Threshold for good protos during adaptive 0-255 |
| classify_adapt_feature_threshold | 230 | Threshold for good features during adaptive 0-255 |
| classify_class_pruner_threshold | 229 | Class Pruner Threshold 0-255 |
| classify_class_pruner_multiplier | 30 | Class Pruner Multiplier 0-255: |
| classify_cp_cutoff_strength | 7 | Class Pruner CutoffStrength: |
| classify_integer_matcher_multiplier | 14 | Integer Matcher Multiplier 0-255: |
| il1_adaption_test | 0 | Dont adapt to i/I at beginning of word |
| dawg_debug_level | 0 | Set to 1 for general debug info, to 2 for more details, to 3 to see all the debug messages |
| hyphen_debug_level | 0 | Debug level for hyphenated words. |
| max_viterbi_list_size | 10 | Maximum size of viterbi list. |
| stopper_smallword_size | 2 | Size of dict word to be treated as non-dict word |
| stopper_debug_level | 0 | Stopper debug level |
| tessedit_truncate_wordchoice_log | 10 | Max words to keep in list |
| fragments_debug | 0 | Debug character fragments |
| segment_debug | 0 | Debug the whole segmentation process |
| max_permuter_attempts 10000 | Maximum number of different character choices to consider during permutation. This limit is especially useful when user patterns are specified, since overly generic patterns can result in dawg search exploring | an overly large number of options. |
| wordrec_num_seg_states | 30 | Segmentation states |
| repair_unchopped_blobs | 1 | Fix blobs that aren’t chopped |
| chop_debug | 0 | Chop debug |
| chop_split_length | 10000 | Split Length |
| chop_same_distance | 2 | Same distance |
| chop_min_outline_points | 6 | Min Number of Points on Outline |
| chop_inside_angle | -50 | Min Inside Angle Bend |
| chop_min_outline_area | 2000 | Min Outline Area |
| chop_x_y_weight | 3 | X / Y length weight |
| segment_adjust_debug | 0 | Segmentation adjustment debug |
| wordrec_debug_level | 0 | Debug level for wordrec |
| segsearch_debug_level | 0 | SegSearch debug level |
| segsearch_max_pain_points | 2000 | Maximum number of pain points stored in the queue |
| segsearch_max_futile_classifications | 10 | Maximum number of pain point classifications per word thatdid not result in finding a better word choice. |
| language_model_debug_level | 0 | Language model debug level |
| language_model_ngram_order | 8 | Maximum order of the character ngram model |
| language_model_viterbi_list_max_num_prunable | 10 | Maximum number of prunable (those for which PrunablePath() is true) entries in each viterbi list recorded in BLOB_CHOICEs |
| language_model_viterbi_list_max_size | 500 | Maximum size of viterbi lists recorded in BLOB_CHOICEs |
| language_model_min_compound_length | 3 | Minimum length of compound words |
| language_model_fixed_length_choices_depth | 3 | Depth of blob choice lists to explore when fixed length dawgs are on |
| tessedit_pageseg_mode | 6 | Page seg mode: 0=osd only, 1=auto+osd, 2=auto, 3=col, 4=block, 5=line, 6=word, 7=char (Values from PageSegMode enum in publictypes.h) |
| tessedit_ocr_engine_mode | 0 | Which OCR engine(s) to run (Tesseract, Cube, both). Defaults to loading and running only Tesseract (no Cube,no combiner). Values from OcrEngineMode enum in tesseractclass.h) |
| pageseg_devanagari_split_strategy | 0 | Whether to use the top-line splitting process for Devanagari documents while performing page-segmentation. |
| ocr_devanagari_split_strategy | 0 | Whether to use the top-line splitting process for Devanagari documents while performing ocr. |
| bidi_debug | 0 | Debug level for BiDi |
| applybox_debug | 1 | Debug level |
| applybox_page | 0 | Page number to apply boxes from |
| tessedit_bigram_debug | 0 | Amount of debug output for bigram correction. |
| debug_x_ht_level | 0 | Reestimate debug |
| quality_min_initial_alphas_reqd | 2 | alphas in a good word |
| tessedit_tess_adaption_mode | 39 | Adaptation decision algorithm for tess |
| tessedit_test_adaption_mode | 3 | Adaptation decision algorithm for tess |
| paragraph_debug_level | 0 | Print paragraph debug info. |
| cube_debug_level | 0 | Print cube debug info. |
| tessedit_preserve_min_wd_len | 2 | Only preserve wds longer than this |
| crunch_rating_max | 10 | For adj length in rating per ch |
| crunch_pot_indicators | 1 | How many potential indicators needed |
| crunch_leave_lc_strings | 4 | Dont crunch words with long lower case strings |
| crunch_leave_uc_strings | 4 | Dont crunch words with long lower case strings |
| crunch_long_repetitions | 3 | Crunch words with long repetitions |
| crunch_debug | 0 | As it says |
| fixsp_non_noise_limit | 1 | How many non-noise blbs either side? |
| fixsp_done_mode | 1 | What constitues done for spacing |
| debug_fix_space_level | 0 | Contextual fixspace debug |
| x_ht_acceptance_tolerance | 8 | Max allowed deviation of blob top outside of font data |
| x_ht_min_change | 8 | Min change in xht before actually trying it |
| suspect_level | 99 | Suspect marker level |
| suspect_space_level | 100 | Min suspect level for rejecting spaces |
| suspect_short_words | 2 | Dont Suspect dict wds longer than this |
| tessedit_reject_mode | 0 | Rejection algorithm |
| tessedit_ok_mode | 5 | Acceptance decision algorithm |
| tessedit_image_border | 2 | Rej blbs near image edge limit |
| min_sane_x_ht_pixels | 8 | Reject any x-ht lt or eq than this |
| tessedit_page_number | -1 | -1 -> All pages , else specifc page to process |
| tessdata_manager_debug_level | 0 | Debug level for TessdataManager functions. |
| tosp_debug_level | 0 | Debug data |
| tosp_enough_space_samples_for_median | 3 | or should we use mean |
| tosp_redo_kern_limit | 10 | No.samples reqd to reestimate for row |
| tosp_few_samples | 40 | No.gaps reqd with 1 large gap to treat as a table |
| tosp_short_row | 20 | No.gaps reqd with few cert spaces to use certs |
| tosp_sanity_method | 1 | How to avoid being silly |
| textord_max_noise_size | 7 | Pixel size of noise |
| textord_noise_sizefraction | 10 | Fraction of size for maxima |
| textord_noise_translimit | 16 | Transitions for normal blob |
| textord_noise_sncount | 1 | super norm blobs to save row |
| use_definite_ambigs_for_classifier | 0 | Use definite ambiguities when running character classifier |
| use_ambigs_for_adaption | 0 | Use ambigs for deciding whether to adapt to a character |
| prioritize_division | 0 | Prioritize blob division over chopping |
| classify_enable_learning | 1 | Enable adaptive classifier |
| tess_cn_matching | 0 | Character Normalized Matching |
| tess_bn_matching | 0 | Baseline Normalized Matching |
| classify_enable_adaptive_matcher | 1 | Enable adaptive classifier |
| classify_use_pre_adapted_templates | 0 | Use pre-adapted classifier templates |
| classify_save_adapted_templates | 0 | Save adapted templates to a file |
| classify_enable_adaptive_debugger | 0 | Enable match debugger |
| disable_character_fragments | 1 | Do not include character fragments in the results of the classifier |
| classify_debug_character_fragments | 0 | Bring up graphical debugging windows for fragments training |
| matcher_debug_separate_windows | 0 | Use two different windows for debugging the matching: One for the protos and one for the features. |
| classify_bln_numeric_mode | 0 | Assume the input is numbers [0-9]. |
| load_system_dawg | 1 | Load system word dawg. |
| load_freq_dawg | 1 | Load frequent word dawg. |
| load_unambig_dawg | 1 | Load unambiguous word dawg. |
| load_punc_dawg | 1 | Load dawg with punctuation patterns. |
| load_number_dawg | 1 | Load dawg with number patterns. |
| load_fixed_length_dawgs | 1 | Load fixed length dawgs (e.g. for non-space delimited languages) |
| load_bigram_dawg | 1 | Load dawg with special word bigrams. |
| use_only_first_uft8_step | 0 | Use only the first UTF8 step of the given string when computing log probabilities. |
| stopper_no_acceptable_choices | 0 | Make AcceptableChoice() always return false. Useful when there is a need to explore all segmentations |
| save_raw_choices | 1 | Save all explored raw choices |
| permute_debug | 0 | Debug char permutation process |
| permute_script_word | 0 | Turn on word script consistency permuter |
| segment_segcost_rating | 0 | incorporate segmentation cost in word rating? |
| segment_nonalphabetic_script | 0 | Don’t use any alphabetic-specific tricks.Set to true in the traineddata config file for scripts that are cursive or inherently fixed-pitch |
| permute_fixed_length_dawg | 0 | Turn on fixed-length phrasebook search permuter |
| permute_chartype_word | 0 | Turn on character type (property) consistency permuter |
| save_doc_words | 0 | Save Document Words |
| doc_dict_enable | 1 | Enable Document Dictionary |
| ngram_permuter_activated | 0 | Activate character-level n-gram-based permuter |
| permute_only_top | 0 | Run only the top choice permuter |
| merge_fragments_in_matrix | 1 | Merge the fragments in the ratings matrix and delete them after merging |
| wordrec_no_block | 0 | Don’t output block information |
| wordrec_enable_assoc | 1 | Associator Enable |
| force_word_assoc | 0 | force associator to run regardless of what enable_assoc is.This is used for CJK where component grouping is necessary. |
| fragments_guide_chopper | 0 | Use information from fragments to guide chopping process |
| chop_enable | 1 | Chop enable |
| chop_vertical_creep | 0 | Vertical creep |
| assume_fixed_pitch_char_segment | 0 | include fixed-pitch heuristics in char segmentation |
| use_new_state_cost | 0 | use new state cost heuristics for segmentation state evaluation |
| wordrec_debug_blamer | 0 | Print blamer debug messages |
| wordrec_run_blamer | 0 | Try to set the blame for errors |
| enable_new_segsearch | 0 | Enable new segmentation search path. |
| save_alt_choices | 1 | Save alternative paths found during chopping and segmentation search |
| language_model_ngram_on | 0 | Turn on/off the use of character ngram model |
| language_model_ngram_use_only_first_uft8_step | 0 | Use only the first UTF8 step of the given string when computing log probabilities. |
| language_model_ngram_space_delimited_language | 1 | Words are delimited by space |
| language_model_use_sigmoidal_certainty | 0 | Use sigmoidal score for certainty |
| tessedit_resegment_from_boxes | 0 | Take segmentation and labeling from box file |
| tessedit_resegment_from_line_boxes | 0 | Conversion of word/line box file to char box file |
| tessedit_train_from_boxes | 0 | Generate training data from boxed chars |
| tessedit_make_boxes_from_boxes | 0 | Generate more boxes from boxed chars |
| tessedit_dump_pageseg_images | 0 | Dump intermediate images made during page segmentation |
| tessedit_ambigs_training | 0 | Perform training for ambiguities |
| tessedit_adapt_to_char_fragments | 1 | Adapt to words that contain a character composed form fragments |
| tessedit_adaption_debug | 0 | Generate and print debug information for adaption |
| applybox_learn_chars_and_char_frags_mode | 0 | Learn both character fragments (as is done in the special low exposure mode) as well as unfragmented characters. |
| applybox_learn_ngrams_mode | 0 | Each bounding box is assumed to contain ngrams. Only learn the ngrams whose outlines overlap horizontally. |
| tessedit_display_outwords | 0 | Draw output words |
| tessedit_training_tess | 0 | Call Tess to learn blobs |
| tessedit_dump_choices | 0 | Dump char choices |
| tessedit_fix_fuzzy_spaces | 1 | Try to improve fuzzy spaces |
| tessedit_unrej_any_wd | 0 | Dont bother with word plausibility |
| tessedit_fix_hyphens | 1 | Crunch double hyphens? |
| tessedit_redo_xheight | 1 | Check/Correct x-height |
| tessedit_enable_doc_dict | 1 | Add words to the document dictionary |
| tessedit_debug_fonts | 0 | Output font info per char |
| tessedit_debug_block_rejection | 0 | Block and Row stats |
| tessedit_enable_bigram_correction | 1 | Enable correction based on the word bigram dictionary. |
| debug_acceptable_wds | 0 | Dump word pass/fail chk |
| tessedit_tess_adapt_to_rejmap | 0 | Use reject map to control Tesseract adaption |
| tessedit_minimal_rej_pass1 | 0 | Do minimal rejection on pass 1 output |
| tessedit_test_adaption | 0 | Test adaption criteria |
| tessedit_matcher_log | 0 | Log matcher activity |
| save_blob_choices | 0 | Save the results of the recognition step (blob_choices) within the corresponding WERD_CHOICE |
| test_pt | 0 | Test for point |
| docqual_excuse_outline_errs | 0 | Allow outline errs in unrejection? |
| tessedit_good_quality_unrej | 1 | Reduce rejection on good docs |
| tessedit_use_reject_spaces | 1 | Reject spaces? |
| tessedit_preserve_blk_rej_perfect_wds | 1 | Only rej partially rejected words in block rejection |
| tessedit_preserve_row_rej_perfect_wds | 1 | Only rej partially rejected words in row rejection |
| tessedit_dont_blkrej_good_wds | 0 | Use word segmentation quality metric |
| tessedit_dont_rowrej_good_wds | 0 | Use word segmentation quality metric |
| tessedit_row_rej_good_docs | 1 | Apply row rejection to good docs |
| tessedit_reject_bad_qual_wds | 1 | Reject all bad quality wds |
| tessedit_debug_doc_rejection | 0 | Page stats |
| tessedit_debug_quality_metrics | 0 | Output data to debug file |
| bland_unrej | 0 | unrej potential with no chekcs |
| unlv_tilde_crunching | 1 | Mark v.bad words for tilde crunch |
| crunch_early_merge_tess_fails | 1 | Before word crunch? |
| crunch_early_convert_bad_unlv_chs | 0 | Take out ~^ early? |
| crunch_terrible_garbage | 1 | As it says |
| crunch_pot_garbage | 1 | POTENTIAL crunch garbage |
| crunch_leave_ok_strings | 1 | Dont touch sensible strings |
| crunch_accept_ok | 1 | Use acceptability in okstring |
| crunch_leave_accept_strings | 0 | Dont pot crunch sensible strings |
| crunch_include_numerals | 0 | Fiddle alpha figures |
| tessedit_prefer_joined_punct | 0 | Reward punctation joins |
| tessedit_write_block_separators | 0 | Write block separators in output |
| tessedit_write_rep_codes | 0 | Write repetition char code |
| tessedit_write_unlv | 0 | Write .unlv output file |
| tessedit_create_hocr | 0 | Write .html hOCR output file |
| suspect_constrain_1Il | 0 | UNLV keep 1Il chars rejected |
| tessedit_minimal_rejection | 0 | Only reject tess failures |
| tessedit_zero_rejection | 0 | Dont reject ANYTHING |
| tessedit_word_for_word | 0 | Make output have exactly one word per WERD |
| tessedit_zero_kelvin_rejection | 0 | Dont reject ANYTHING AT ALL |
| tessedit_consistent_reps | 1 | Force all rep chars the same |
| tessedit_rejection_debug | 0 | Adaption debug |
| tessedit_flip_0O | 1 | Contextual 0O O0 flips |
| rej_trust_doc_dawg | 0 | Use DOC dawg in 11l conf. detector |
| rej_1Il_use_dict_word | 0 | Use dictword test |
| rej_1Il_trust_permuter_type | 1 | Dont double check |
| rej_use_tess_accepted | 1 | Individual rejection control |
| rej_use_tess_blanks | 1 | Individual rejection control |
| rej_use_good_perm | 1 | Individual rejection control |
| rej_use_sensible_wd | 0 | Extend permuter check |
| rej_alphas_in_number_perm | 0 | Extend permuter check |
| tessedit_create_boxfile | 0 | Output text with boxes |
| tessedit_write_images | 0 | Capture the image from the IPE |
| interactive_display_mode | 0 | Run interactively? |
| tessedit_override_permuter | 1 | According to dict_word |
| textord_tabfind_show_vlines | 0 | Debug line finding |
| textord_use_cjk_fp_model | 0 | Use CJK fixed pitch model |
| tessedit_init_config_only | 0 | Only initialize with the config file. Useful if the instance is not going to be used for OCR but say only for layout analysis. |
| textord_equation_detect | 0 | Turn on equation detector |
| textord_single_height_mode | 0 | Script has no xheight, so use a single mode |
| tosp_old_to_method | 0 | Space stats use prechopping? |
| tosp_old_to_constrain_sp_kn | 0 | Constrain relative values of inter and intra-word gaps for old_to_method. |
| tosp_only_use_prop_rows | 1 | Block stats to use fixed pitch rows? |
| tosp_force_wordbreak_on_punct | 0 | Force word breaks on punct to break long lines in non-space delimited langs |
| tosp_use_pre_chopping | 0 | Space stats use prechopping? |
| tosp_old_to_bug_fix | 0 | Fix suspected bug in old code |
| tosp_block_use_cert_spaces | 1 | Only stat OBVIOUS spaces |
| tosp_row_use_cert_spaces | 1 | Only stat OBVIOUS spaces |
| tosp_narrow_blobs_not_cert | 1 | Only stat OBVIOUS spaces |
| tosp_row_use_cert_spaces1 | 1 | Only stat OBVIOUS spaces |
| tosp_recovery_isolated_row_stats | 1 | Use row alone when inadequate cert spaces |
| tosp_only_small_gaps_for_kern | 0 | Better guess |
| tosp_all_flips_fuzzy | 0 | Pass ANY flip to context? |
| tosp_fuzzy_limit_all | 1 | Dont restrict kn->sp fuzzy limit to tables |
| tosp_stats_use_xht_gaps | 1 | Use within xht gap for wd breaks |
| tosp_use_xht_gaps | 1 | Use within xht gap for wd breaks |
| tosp_only_use_xht_gaps | 0 | Only use within xht gap for wd breaks |
| tosp_rule_9_test_punct | 0 | Dont chng kn to space next to punct |
| tosp_flip_fuzz_kn_to_sp | 1 | Default flip |
| tosp_flip_fuzz_sp_to_kn | 1 | Default flip |
| tosp_improve_thresh | 0 | Enable improvement heuristic |
| textord_no_rejects | 0 | Don’t remove noise blobs |
| textord_show_blobs | 0 | Display unsorted blobs |
| textord_show_boxes | 0 | Display unsorted blobs |
| textord_noise_rejwords | 1 | Reject noise-like words |
| textord_noise_rejrows | 1 | Reject noise-like rows |
| textord_noise_debug | 0 | Debug row garbage detector |
| m_data_sub_dir | tessdata/ | Directory for data files |
| classify_learn_debug_str | Class str to debug learning | |
| user_words_suffix | A list of user-provided words. | |
| user_patterns_suffix | A list of user-provided patterns. | |
| output_ambig_words_file | Output file for ambiguities found in the dictionary | |
| word_to_debug | Word for which stopper debug information should be printed to stdout | |
| word_to_debug_lengths | Lengths of unichars in word_to_debug | |
| tessedit_char_blacklist | Blacklist of chars not to recognize | |
| tessedit_char_whitelist | Whitelist of chars to recognize | |
| tessedit_write_params_to_file | Write all parameters to the given file. | |
| applybox_exposure_pattern | .exp | Exposure value follows this pattern in the image filename. The name of the image files are expected to be in the form [lang].[fontname].exp[num].tif |
| chs_leading_punct | (’`” | Leading punctuation |
| chs_trailing_punct1 | ).,;:?! | 1st Trailing punctuation |
| chs_trailing_punct2 | )’`” | 2nd Trailing punctuation |
| outlines_odd | %| | Non standard number of outlines |
| outlines_2 | ij!?%”:; | Non standard number of outlines |
| numeric_punctuation | ., | Punct. chs expected WITHIN numbers |
| unrecognised_char | | | Output char for unidentified blobs |
| ok_repeated_ch_non_alphanum_wds | -?*= Allow NN to unrej | |
| conflict_set_I_l_1 | Il1[] | Il1 conflict set |
| file_type | .tif | Filename extension |
| tessedit_load_sublangs | List of languages to load with this one | |
| classify_char_norm_range | 0.2 | Character Normalization Range … |
| classify_min_norm_scale_x | 0 | Min char x-norm scale … |
| classify_max_norm_scale_x | 0.325 | Max char x-norm scale … |
| classify_min_norm_scale_y | 0 | Min char y-norm scale … |
| classify_max_norm_scale_y | 0.325 | Max char y-norm scale … |
| matcher_good_threshold | 0.125 | Good Match (0-1) |
| matcher_great_threshold | 0 | Great Match (0-1) |
| matcher_perfect_threshold | 0.02 | Perfect Match (0-1) |
| matcher_bad_match_pad | 0.15 | Bad Match Pad (0-1) |
| matcher_rating_margin | 0.1 | New template margin (0-1) |
| matcher_avg_noise_size | 12 | Avg. noise blob length |
| matcher_clustering_max_angle_delta | 0.015 | Maximum angle delta for prototype clustering |
| classify_misfit_junk_penalty | 0 | Penalty to apply when a non-alnum is vertically out of its expected textline position |
| rating_scale | 1.5 | Rating scaling factor |
| certainty_scale | 20 | Certainty scaling factor |
| tessedit_class_miss_scale | 0.00390625 | Scale factor for features not used |
| classify_character_fragments_garbage_certainty_threshold | -3 | Exclude fragments that do not look like whole characters from training and adaption |
| segment_penalty_dict_frequent_word | 1 | Score multiplier for word matches which have good case andare frequent in the given language (lower is better). |
| segment_penalty_dict_case_ok | 1.1 | Score multiplier for word matches that have good case (lower is better). |
| segment_penalty_dict_case_bad | 1.3125 | Default score multiplier for word matches, which may have case issues (lower is better). |
| segment_penalty_ngram_best_choice | 1.24 | Multipler to for the best choice from the ngram model. |
| segment_penalty_dict_nonword | 1.25 | Score multiplier for glyph fragment segmentations which do not match a dictionary word (lower is better). |
| segment_penalty_garbage | 1.5 | Score multiplier for poorly cased strings that are not in the dictionary and generally look like garbage (lower is better). |
| certainty_scale | 20 | Certainty scaling factor |
| stopper_nondict_certainty_base | -2.5 | Certainty threshold for non-dict words |
| stopper_phase2_certainty_rejection_offset | 1 | Reject certainty offset |
| stopper_certainty_per_char | -0.5 | Certainty to add for each dict char above small word size. |
| stopper_allowable_character_badness | 3 | Max certaintly variation allowed in a word (in sigma) |
| stopper_ambiguity_threshold_gain | 8 | Gain factor for ambiguity threshold. |
| stopper_ambiguity_threshold_offset | 1.5 | Certainty offset for ambiguity threshold. |
| bestrate_pruning_factor | 2 | Multiplying factor of current best rate to prune other hypotheses |
| segment_reward_script | 0.95 | Score multipler for script consistency within a word. Being a ‘reward’ factor, it should be <= 1. Smaller value implies bigger reward. |
| segment_reward_chartype | 0.97 | Score multipler for char type consistency within a word. |
| segment_reward_ngram_best_choice | 0.99 | Score multipler for ngram permuter’s best choice (only used in the Han script path). |
| doc_dict_pending_threshold | 0 | Worst certainty for using pending dictionary |
| doc_dict_certainty_threshold | -2.25 | Worst certainty for words that can be inserted into thedocument dictionary |
| wordrec_worst_state | 1 | Worst segmentation state |
| tessedit_certainty_threshold | -2.25 | Good blob limit |
| chop_split_dist_knob | 0.5 | Split length adjustment |
| chop_overlap_knob | 0.9 | Split overlap adjustment |
| chop_center_knob | 0.15 | Split center adjustment |
| chop_sharpness_knob | 0.06 | Split sharpness adjustment |
| chop_width_change_knob | 5 | Width change adjustment |
| chop_ok_split | 100 | OK split limit |
| chop_good_split | 50 | Good split limit |
| heuristic_segcost_rating_base | 1.25 | base factor for adding segmentation cost into word rating.It’s a multiplying factor, the larger the value above 1, the bigger the effect of segmentation cost. |
| heuristic_weight_rating | 1 | weight associated with char rating in combined cost of state |
| heuristic_weight_width | 1000 | weight associated with width evidence in combined cost of state |
| heuristic_weight_seamcut | 0 | weight associated with seam cut in combined cost of state |
| heuristic_max_char_wh_ratio | 2 | max char width-to-height ratio allowed in segmentation |
| segsearch_max_char_wh_ratio | 2 | Maximum character width-to-height ratio |
| segsearch_max_fixed_pitch_char_wh_ratio | 2 | Maximum character width-to-height ratio for fixed-pitch fonts |
| language_model_ngram_small_prob | 0,000001 | To avoid overly small denominators use this as the floor of the probability returned by the ngram model. |
| language_model_ngram_nonmatch_score | -40 | Average classifier score of a non-matching unichar. |
| language_model_ngram_scale_factor | 0.03 | Strength of the character ngram model relative to the character classifier |
| language_model_penalty_non_freq_dict_word | 0.1 | Penalty for words not in the frequent word dictionary |
| language_model_penalty_non_dict_word | 0.15 | Penalty for non-dictionary words |
| language_model_penalty_punc | 0.2 | Penalty for inconsistent punctuation |
| language_model_penalty_case | 0.1 | Penalty for inconsistent case |
| language_model_penalty_script | 0.5 | Penalty for inconsistent script |
| language_model_penalty_chartype | 0.3 | Penalty for inconsistent character type |
| language_model_penalty_font | 0 | Penalty for inconsistent font |
| language_model_penalty_spacing | 0.05 | Penalty for inconsistent spacing |
| language_model_penalty_increment | 0.01 | Penalty increment |
| quality_rej_pc | 0.08 | good_quality_doc lte rejection limit |
| quality_blob_pc | 0 | good_quality_doc gte good blobs limit |
| quality_outline_pc | 1 | good_quality_doc lte outline error limit |
| quality_char_pc | 0.95 | good_quality_doc gte good char limit |
| test_pt_x | 100000 | xcoord |
| test_pt_y | 100000 | ycoord |
| tessedit_reject_doc_percent | 65 | %rej allowed before rej whole doc |
| tessedit_reject_block_percent | 45 | %rej allowed before rej whole block |
| tessedit_reject_row_percent | 40 | %rej allowed before rej whole row |
| tessedit_whole_wd_rej_row_percent | 70 | Number of row rejects in whole word rejectswhich prevents whole row rejection |
| tessedit_good_doc_still_rowrej_wd | 1.1 | rej good doc wd if more than this fraction rejected |
| quality_rowrej_pc | 1.1 | good_quality_doc gte good char limit |
| crunch_terrible_rating | 80 | crunch rating lt this |
| crunch_poor_garbage_cert | -9 | crunch garbage cert lt this |
| crunch_poor_garbage_rate | 60 | crunch garbage rating lt this |
| crunch_pot_poor_rate | 40 | POTENTIAL crunch rating lt this |
| crunch_pot_poor_cert | -8 | POTENTIAL crunch cert lt this |
| crunch_del_rating | 60 | POTENTIAL crunch rating lt this |
| crunch_del_cert | -10 | POTENTIAL crunch cert lt this |
| crunch_del_min_ht | 0.7 | Del if word ht lt xht x this |
| crunch_del_max_ht | 3 | Del if word ht gt xht x this |
| crunch_del_min_width | 3 | Del if word width lt xht x this |
| crunch_del_high_word | 1.5 | Del if word gt xht x this above bl |
| crunch_del_low_word | 0.5 | Del if word gt xht x this below bl |
| crunch_small_outlines_size | 0.6 | Small if lt xht x this |
| fixsp_small_outlines_size | 0.28 | Small if lt xht x this |
| suspect_rating_per_ch | 999.9 | Dont touch bad rating limit |
| suspect_accept_rating | -999.9 | Accept good rating limit |
| tessedit_lower_flip_hyphen | 1.5 | Aspect ratio dot/hyphen test |
| tessedit_upper_flip_hyphen | 1.8 | Aspect ratio dot/hyphen test |
| rej_whole_of_mostly_reject_word_fract | 0.85 | if >this fract |
| min_orientation_margin | 7 | Min acceptable orientation margin |
| tosp_old_sp_kn_th_factor | 2 | Factor for defining space threshold in terms of space and kern sizes |
| tosp_threshold_bias1 | 0 | how far between kern and space? |
| tosp_threshold_bias2 | 0 | how far between kern and space? |
| tosp_narrow_fraction | 0.3 | Fract of xheight for narrow |
| tosp_narrow_aspect_ratio | 0.48 | narrow if w/h less than this |
| tosp_wide_fraction | 0.52 | Fract of xheight for wide |
| tosp_wide_aspect_ratio | 0 | wide if w/h less than this |
| tosp_fuzzy_space_factor | 0.6 | Fract of xheight for fuzz sp |
| tosp_fuzzy_space_factor1 | 0.5 | Fract of xheight for fuzz sp |
| tosp_fuzzy_space_factor2 | 0.72 | Fract of xheight for fuzz sp |
| tosp_gap_factor | 0.83 | gap ratio to flip sp->kern |
| tosp_kern_gap_factor1 | 2 | gap ratio to flip kern->sp |
| tosp_kern_gap_factor2 | 1.3 | gap ratio to flip kern->sp |
| tosp_kern_gap_factor3 | 2.5 | gap ratio to flip kern->sp |
| tosp_ignore_big_gaps | -1 | xht multiplier |
| tosp_ignore_very_big_gaps | 3.5 | xht multiplier |
| tosp_rep_space | 1.6 | rep gap multiplier for space |
| tosp_enough_small_gaps | 0.65 | Fract of kerns reqd for isolated row stats |
| tosp_table_kn_sp_ratio | 2.25 | Min difference of kn & sp in table |
| tosp_table_xht_sp_ratio | 0.33 | Expect spaces bigger than this |
| tosp_table_fuzzy_kn_sp_ratio | 3 | Fuzzy if less than this |
| tosp_fuzzy_kn_fraction | 0.5 | New fuzzy kn alg |
| tosp_fuzzy_sp_fraction | 0.5 | New fuzzy sp alg |
| tosp_min_sane_kn_sp | 1.5 | Dont trust spaces less than this time kn |
| tosp_init_guess_kn_mult | 2.2 | Thresh guess – mult kn by this |
| tosp_init_guess_xht_mult | 0.28 | Thresh guess – mult xht by this |
| tosp_max_sane_kn_thresh | 5 | Multiplier on kn to limit thresh |
| tosp_flip_caution | 0 | Dont autoflip kn to sp when large separation |
| tosp_large_kerning | 0.19 | Limit use of xht gap with large kns |
| tosp_dont_fool_with_small_kerns | -1 | Limit use of xht gap with odd small kns |
| tosp_near_lh_edge | 0 | Dont reduce box if the top left is non blank |
| tosp_silly_kn_sp_gap | 0.2 | Dont let sp minus kn get too small |
| tosp_pass_wide_fuzz_sp_to_context | 0.75 | How wide fuzzies need context |
| textord_blob_size_bigile | 95 | Percentile for large blobs |
| textord_noise_area_ratio | 0.7 | Fraction of bounding box for noise |
| textord_blob_size_smallile | 20 | Percentile for small blobs |
| textord_initialx_ile | 0.75 | Ile of sizes for xheight guess |
| textord_initialasc_ile | 0.9 | Ile of sizes for xheight guess |
| textord_noise_sizelimit | 0.5 | Fraction of x for big t count |
| textord_noise_normratio | 2 | Dot to norm ratio for deletion |
| textord_noise_syfract | 0.2 | xh fract height error for norm blobs |
| textord_noise_sxfract | 0.4 | xh fract width error for norm blobs |
| textord_noise_hfract | 0.015625 | Height fraction to discard outlines as speckle noise |
| textord_noise_rowratio | 6 | Dot to norm ratio for deletion |
| textord_blshift_maxshift | 0 | Max baseline shift |
| textord_blshift_xfraction | 9.99 | Min size of baseline shift |
Source: https://code.google.com/p/tesseract-ocr/wiki/ControlParams and http://www.sk-spell.sk.cx/tesseract-ocr-parameters-in-302-version