tesseract/wordrec/wordrec.cpp

///////////////////////////////////////////////////////////////////////
// File:        wordrec.cpp
// Description: wordrec class.
// Author:      Samuel Charron
//
// (C) Copyright 2006, Google Inc.
// 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.
//
///////////////////////////////////////////////////////////////////////

#include "wordrec.h"

#include "language_model.h"
#include "params.h"


namespace tesseract {
Wordrec::Wordrec() :
  // control parameters
  BOOL_MEMBER(merge_fragments_in_matrix, TRUE,
              "Merge the fragments in the ratings matrix and delete them"
              " after merging", params()),
  BOOL_MEMBER(wordrec_no_block, FALSE, "Don't output block information",
              params()),
  BOOL_MEMBER(wordrec_enable_assoc, TRUE, "Associator Enable",
              params()),
  BOOL_MEMBER(force_word_assoc, FALSE,
              "force associator to run regardless of what enable_assoc is."
              "This is used for CJK where component grouping is necessary.",
              CCUtil::params()),
  double_MEMBER(wordrec_worst_state, 1.0, "Worst segmentation state",
                params()),
  BOOL_MEMBER(fragments_guide_chopper, FALSE,
              "Use information from fragments to guide chopping process",
              params()),
  INT_MEMBER(repair_unchopped_blobs, 1, "Fix blobs that aren't chopped",
             params()),
  double_MEMBER(tessedit_certainty_threshold, -2.25, "Good blob limit",
                params()),
  INT_MEMBER(chop_debug, 0, "Chop debug",
             params()),
  BOOL_MEMBER(chop_enable, 1, "Chop enable",
              params()),
  BOOL_MEMBER(chop_vertical_creep, 0, "Vertical creep",
            params()),
  INT_MEMBER(chop_split_length, 10000, "Split Length",
             params()),
  INT_MEMBER(chop_same_distance, 2, "Same distance",
             params()),
  INT_MEMBER(chop_min_outline_points, 6, "Min Number of Points on Outline",
             params()),
  INT_MEMBER(chop_inside_angle, -50, "Min Inside Angle Bend",
             params()),
  INT_MEMBER(chop_min_outline_area, 2000, "Min Outline Area",
             params()),
  double_MEMBER(chop_split_dist_knob, 0.5, "Split length adjustment",
                params()),
  double_MEMBER(chop_overlap_knob, 0.9, "Split overlap adjustment",
                params()),
  double_MEMBER(chop_center_knob, 0.15, "Split center adjustment",
                params()),
  INT_MEMBER(chop_centered_maxwidth, 90, "Width of (smaller) chopped blobs "
             "above which we don't care that a chop is not near the center.",
             params()),
  double_MEMBER(chop_sharpness_knob, 0.06, "Split sharpness adjustment",
                params()),
  double_MEMBER(chop_width_change_knob, 5.0, "Width change adjustment",
                params()),
  double_MEMBER(chop_ok_split, 100.0, "OK split limit",
                params()),
  double_MEMBER(chop_good_split, 50.0, "Good split limit",
                params()),
  INT_MEMBER(chop_x_y_weight, 3, "X / Y  length weight",
             params()),
  INT_MEMBER(segment_adjust_debug, 0, "Segmentation adjustment debug",
             params()),
  BOOL_MEMBER(assume_fixed_pitch_char_segment, FALSE,
              "include fixed-pitch heuristics in char segmentation",
              params()),
  INT_MEMBER(wordrec_debug_level, 0,
             "Debug level for wordrec", params()),
  INT_MEMBER(wordrec_max_join_chunks, 4,
             "Max number of broken pieces to associate", params()),
  BOOL_MEMBER(wordrec_skip_no_truth_words, false,
              "Only run OCR for words that had truth recorded in BlamerBundle",
              params()),
  BOOL_MEMBER(wordrec_debug_blamer, false,
              "Print blamer debug messages", params()),
  BOOL_MEMBER(wordrec_run_blamer, false,
              "Try to set the blame for errors", params()),
  INT_MEMBER(segsearch_debug_level, 0,
             "SegSearch debug level", params()),
  INT_MEMBER(segsearch_max_pain_points, 2000,
             "Maximum number of pain points stored in the queue",
             params()),
  INT_MEMBER(segsearch_max_futile_classifications, 20,
             "Maximum number of pain point classifications per chunk that"
             "did not result in finding a better word choice.",
             params()),
  double_MEMBER(segsearch_max_char_wh_ratio, 2.0,
                "Maximum character width-to-height ratio", params()),
  BOOL_MEMBER(save_alt_choices, true,
              "Save alternative paths found during chopping"
              " and segmentation search",
              params()) {
  prev_word_best_choice_ = NULL;
  language_model_ = new LanguageModel(&get_fontinfo_table(),
                                      &(getDict()));
  fill_lattice_ = NULL;
}

Wordrec::~Wordrec() {
  delete language_model_;
}

}  // namespace tesseract