C++ WERD::cblob_list方法代码示例

// Remove outlines that are a tiny fraction in either width or height
// of the word height.
void Textord::clean_small_noise_from_words(ROW *row) {
  WERD_IT word_it(row->word_list());
  for (word_it.mark_cycle_pt(); !word_it.cycled_list(); word_it.forward()) {
    WERD* word = word_it.data();
    int min_size = static_cast<int>(
      textord_noise_hfract * word->bounding_box().height() + 0.5);
    C_BLOB_IT blob_it(word->cblob_list());
    for (blob_it.mark_cycle_pt(); !blob_it.cycled_list(); blob_it.forward()) {
      C_BLOB* blob = blob_it.data();
      C_OUTLINE_IT out_it(blob->out_list());
      for (out_it.mark_cycle_pt(); !out_it.cycled_list(); out_it.forward()) {
        C_OUTLINE* outline = out_it.data();
        outline->RemoveSmallRecursive(min_size, &out_it);
      }
      if (blob->out_list()->empty()) {
        delete blob_it.extract();
      }
    }
    if (word->cblob_list()->empty()) {
      if (!word_it.at_last()) {
        // The next word is no longer a fuzzy non space if it was before,
        // since the word before is about to be deleted.
        WERD* next_word = word_it.data_relative(1);
        if (next_word->flag(W_FUZZY_NON)) {
          next_word->set_flag(W_FUZZY_NON, false);
        }
      }
      delete word_it.extract();
    }
  }
}

void PrintSegmentationStats(BLOCK_LIST* block_list) {
  int num_blocks = 0;
  int num_rows = 0;
  int num_words = 0;
  int num_blobs = 0;
  BLOCK_IT block_it(block_list);
  for (block_it.mark_cycle_pt(); !block_it.cycled_list(); block_it.forward()) {
    BLOCK* block = block_it.data();
    ++num_blocks;
    ROW_IT row_it(block->row_list());
    for (row_it.mark_cycle_pt(); !row_it.cycled_list(); row_it.forward()) {
      ++num_rows;
      ROW* row = row_it.data();
      // Iterate over all werds in the row.
      WERD_IT werd_it(row->word_list());
      for (werd_it.mark_cycle_pt(); !werd_it.cycled_list(); werd_it.forward()) {
        WERD* werd = werd_it.data();
        ++num_words;
        num_blobs += werd->cblob_list()->length();
      }
    }
  }
  tprintf("Block list stats:\nBlocks = %d\nRows = %d\nWords = %d\nBlobs = %d\n",
          num_blocks, num_rows, num_words, num_blobs);
}

/// Builds a PAGE_RES from the block_list in the way required for ApplyBoxes:
/// All fuzzy spaces are removed, and all the words are maximally chopped.
PAGE_RES* Tesseract::SetupApplyBoxes(const GenericVector<TBOX>& boxes,
                                     BLOCK_LIST *block_list) {
  PreenXHeights(block_list);
  // Strip all fuzzy space markers to simplify the PAGE_RES.
  BLOCK_IT b_it(block_list);
  for (b_it.mark_cycle_pt(); !b_it.cycled_list(); b_it.forward()) {
    BLOCK* block = b_it.data();
    ROW_IT r_it(block->row_list());
    for (r_it.mark_cycle_pt(); !r_it.cycled_list(); r_it.forward ()) {
      ROW* row = r_it.data();
      WERD_IT w_it(row->word_list());
      for (w_it.mark_cycle_pt(); !w_it.cycled_list(); w_it.forward()) {
        WERD* word = w_it.data();
        if (word->cblob_list()->empty()) {
          delete w_it.extract();
        } else {
          word->set_flag(W_FUZZY_SP, false);
          word->set_flag(W_FUZZY_NON, false);
        }
      }
    }
  }
  PAGE_RES* page_res = new PAGE_RES(false, block_list, NULL);
  PAGE_RES_IT pr_it(page_res);
  WERD_RES* word_res;
  while ((word_res = pr_it.word()) != NULL) {
    MaximallyChopWord(boxes, pr_it.block()->block,
                      pr_it.row()->row, word_res);
    pr_it.forward();
  }
  return page_res;
}

PAGE_RES_IT* make_pseudo_word(PAGE_RES* page_res, const TBOX& selection_box) {
  PAGE_RES_IT pr_it(page_res);
  C_BLOB_LIST new_blobs;               // list of gathered blobs
  C_BLOB_IT new_blob_it = &new_blobs;  // iterator

  for (WERD_RES* word_res = pr_it.word(); word_res != NULL;
       word_res = pr_it.forward()) {
    WERD* word = word_res->word;
    if (word->bounding_box().overlap(selection_box)) {
      C_BLOB_IT blob_it(word->cblob_list());
      for (blob_it.mark_cycle_pt();
           !blob_it.cycled_list(); blob_it.forward()) {
        C_BLOB* blob = blob_it.data();
        if (blob->bounding_box().overlap(selection_box)) {
          new_blob_it.add_after_then_move(C_BLOB::deep_copy(blob));
        }
      }
      if (!new_blobs.empty()) {
        WERD* pseudo_word = new WERD(&new_blobs, 1, NULL);
        word_res = pr_it.InsertSimpleCloneWord(*word_res, pseudo_word);
        PAGE_RES_IT* it = new PAGE_RES_IT(page_res);
        while (it->word() != word_res && it->word() != NULL) it->forward();
        ASSERT_HOST(it->word() == word_res);
        return it;
      }
    }
  }
  return NULL;
}

void ExtractBlobsFromSegmentation(BLOCK_LIST* blocks,
                                  C_BLOB_LIST* output_blob_list) {
  C_BLOB_IT return_list_it(output_blob_list);
  BLOCK_IT block_it(blocks);
  for (block_it.mark_cycle_pt(); !block_it.cycled_list(); block_it.forward()) {
    BLOCK* block = block_it.data();
    ROW_IT row_it(block->row_list());
    for (row_it.mark_cycle_pt(); !row_it.cycled_list(); row_it.forward()) {
      ROW* row = row_it.data();
      // Iterate over all werds in the row.
      WERD_IT werd_it(row->word_list());
      for (werd_it.mark_cycle_pt(); !werd_it.cycled_list(); werd_it.forward()) {
        WERD* werd = werd_it.data();
        return_list_it.move_to_last();
        return_list_it.add_list_after(werd->cblob_list());
        return_list_it.move_to_last();
        return_list_it.add_list_after(werd->rej_cblob_list());
      }
    }
  }
}

// Fixes the block so it obeys all the rules:
// Must have at least one ROW.
// Must have at least one WERD.
// WERDs contain a fake blob.
void Textord::cleanup_nontext_block(BLOCK* block) {
  // Non-text blocks must contain at least one row.
  ROW_IT row_it(block->row_list());
  if (row_it.empty()) {
    const TBOX& box = block->pdblk.bounding_box();
    float height = box.height();
    int32_t xstarts[2] = {box.left(), box.right()};
    double coeffs[3] = {0.0, 0.0, static_cast<double>(box.bottom())};
    ROW* row = new ROW(1, xstarts, coeffs, height / 2.0f, height / 4.0f,
                       height / 4.0f, 0, 1);
    row_it.add_after_then_move(row);
  }
  // Each row must contain at least one word.
  for (row_it.mark_cycle_pt(); !row_it.cycled_list(); row_it.forward()) {
    ROW* row = row_it.data();
    WERD_IT w_it(row->word_list());
    if (w_it.empty()) {
      // Make a fake blob to put in the word.
      TBOX box = block->row_list()->singleton() ? block->pdblk.bounding_box()
                                                : row->bounding_box();
      C_BLOB* blob = C_BLOB::FakeBlob(box);
      C_BLOB_LIST blobs;
      C_BLOB_IT blob_it(&blobs);
      blob_it.add_after_then_move(blob);
      WERD* word = new WERD(&blobs, 0, nullptr);
      w_it.add_after_then_move(word);
    }
    // Each word must contain a fake blob.
    for (w_it.mark_cycle_pt(); !w_it.cycled_list(); w_it.forward()) {
      WERD* word = w_it.data();
      // Just assert that this is true, as it would be useful to find
      // out why it isn't.
      ASSERT_HOST(!word->cblob_list()->empty());
    }
    row->recalc_bounding_box();
  }
}

/**
 *  word_display()  Word Processor
 *
 *  Display a word according to its display modes
 */
BOOL8 Tesseract::word_display(BLOCK* block, ROW* row, WERD_RES* word_res) {
  WERD* word = word_res->word;
  TBOX word_bb;                   // word bounding box
  int word_height;               // ht of word BB
  BOOL8 displayed_something = FALSE;
  float shift;                   // from bot left
  C_BLOB_IT c_it;                // cblob iterator

  if (color_mode != CM_RAINBOW && word_res->box_word != NULL) {
    BoxWord* box_word = word_res->box_word;
    int length = box_word->length();
    if (word_res->fontinfo == NULL) return false;
    const FontInfo& font_info = *word_res->fontinfo;
    for (int i = 0; i < length; ++i) {
      ScrollView::Color color = ScrollView::GREEN;
      switch (color_mode) {
        case CM_SUBSCRIPT:
          if (box_word->BlobPosition(i) == SP_SUBSCRIPT)
            color = ScrollView::RED;
          break;
        case CM_SUPERSCRIPT:
          if (box_word->BlobPosition(i) == SP_SUPERSCRIPT)
            color = ScrollView::RED;
          break;
        case CM_ITALIC:
          if (font_info.is_italic())
            color = ScrollView::RED;
          break;
        case CM_BOLD:
          if (font_info.is_bold())
            color = ScrollView::RED;
          break;
        case CM_FIXEDPITCH:
          if (font_info.is_fixed_pitch())
            color = ScrollView::RED;
          break;
        case CM_SERIF:
          if (font_info.is_serif())
            color = ScrollView::RED;
          break;
        case CM_SMALLCAPS:
          if (word_res->small_caps)
            color = ScrollView::RED;
          break;
        case CM_DROPCAPS:
          if (box_word->BlobPosition(i) == SP_DROPCAP)
            color = ScrollView::RED;
          break;
          // TODO(rays) underline is currently completely unsupported.
        case CM_UNDERLINE:
        default:
          break;
      }
      image_win->Pen(color);
      TBOX box = box_word->BlobBox(i);
      image_win->Rectangle(box.left(), box.bottom(), box.right(), box.top());
    }
    return true;
  }
  /*
    Note the double coercions of(COLOUR)((inT32)editor_image_word_bb_color)
    etc. are to keep the compiler happy.
  */
                                 // display bounding box
  if (word->display_flag(DF_BOX)) {
    word->bounding_box().plot(image_win,
     (ScrollView::Color)((inT32)
      editor_image_word_bb_color),
     (ScrollView::Color)((inT32)
      editor_image_word_bb_color));

    ScrollView::Color c = (ScrollView::Color)
       ((inT32) editor_image_blob_bb_color);
    image_win->Pen(c);
    c_it.set_to_list(word->cblob_list());
    for (c_it.mark_cycle_pt(); !c_it.cycled_list(); c_it.forward())
      c_it.data()->bounding_box().plot(image_win);
    displayed_something = TRUE;
  }

                                 // display edge steps
  if (word->display_flag(DF_EDGE_STEP)) {     // edgesteps available
    word->plot(image_win);      // rainbow colors
    displayed_something = TRUE;
  }

                                 // display poly approx
  if (word->display_flag(DF_POLYGONAL)) {
                                 // need to convert
    TWERD* tword = TWERD::PolygonalCopy(word);
    tword->plot(image_win);
    delete tword;
    displayed_something = TRUE;
  }

//.........这里部分代码省略.........

void Textord::clean_noise_from_words(          //remove empties
                                     ROW *row  //row to clean
                                    ) {
  TBOX blob_box;                 //bounding box
  C_BLOB *blob;                  //current blob
  C_OUTLINE *outline;            //current outline
  WERD *word;                    //current word
  int32_t blob_size;             //biggest size
  int32_t trans_count;           //no of transitions
  int32_t trans_threshold;       //noise tolerance
  int32_t dot_count;             //small objects
  int32_t norm_count;            //normal objects
  int32_t dud_words;             //number discarded
  int32_t ok_words;              //number remaining
  int32_t word_index;            //current word
                                 //words of row
  WERD_IT word_it = row->word_list ();
  C_BLOB_IT blob_it;             //blob iterator
  C_OUTLINE_IT out_it;           //outline iterator

  ok_words = word_it.length ();
  if (ok_words == 0 || textord_no_rejects)
    return;
  // was it chucked
  std::vector<int8_t> word_dud(ok_words);
  dud_words = 0;
  ok_words = 0;
  word_index = 0;
  for (word_it.mark_cycle_pt (); !word_it.cycled_list (); word_it.forward ()) {
    word = word_it.data ();      //current word
    dot_count = 0;
    norm_count = 0;
                                 //blobs in word
    blob_it.set_to_list (word->cblob_list ());
    for (blob_it.mark_cycle_pt (); !blob_it.cycled_list ();
    blob_it.forward ()) {
      blob = blob_it.data ();
      if (!word->flag (W_DONT_CHOP)) {
                                 //get outlines
        out_it.set_to_list (blob->out_list ());
        for (out_it.mark_cycle_pt (); !out_it.cycled_list ();
        out_it.forward ()) {
          outline = out_it.data ();
          blob_box = outline->bounding_box ();
          blob_size =
            blob_box.width () >
            blob_box.height ()? blob_box.width () : blob_box.
            height();
          if (blob_size < textord_noise_sizelimit * row->x_height ())
            dot_count++;         //count smal outlines
          if (!outline->child ()->empty ()
            && blob_box.height () <
            (1 + textord_noise_syfract) * row->x_height ()
            && blob_box.height () >
            (1 - textord_noise_syfract) * row->x_height ()
            && blob_box.width () <
            (1 + textord_noise_sxfract) * row->x_height ()
            && blob_box.width () >
            (1 - textord_noise_sxfract) * row->x_height ())
            norm_count++;        //count smal outlines
        }
      }
      else
        norm_count++;
      blob_box = blob->bounding_box ();
      blob_size =
        blob_box.width () >
        blob_box.height ()? blob_box.width () : blob_box.height ();
      if (blob_size >= textord_noise_sizelimit * row->x_height ()
      && blob_size < row->x_height () * 2) {
        trans_threshold = blob_size / textord_noise_sizefraction;
        trans_count = blob->count_transitions (trans_threshold);
        if (trans_count < textord_noise_translimit)
          norm_count++;
      }
      else if (blob_box.height () > row->x_height () * 2
        && (!word_it.at_first () || !blob_it.at_first ()))
        dot_count += 2;
    }
    if (dot_count > 2 && !word->flag(W_REP_CHAR)) {
      if (dot_count > norm_count * textord_noise_normratio * 2)
        word_dud[word_index] = 2;
      else if (dot_count > norm_count * textord_noise_normratio)
        word_dud[word_index] = 1;
      else
        word_dud[word_index] = 0;
    } else {
      word_dud[word_index] = 0;
    }
    if (word_dud[word_index] == 2)
      dud_words++;
    else
      ok_words++;
    word_index++;
  }

  word_index = 0;
  for (word_it.mark_cycle_pt (); !word_it.cycled_list (); word_it.forward ()) {
    if (word_dud[word_index] == 2
    || (word_dud[word_index] == 1 && dud_words > ok_words)) {
//.........这里部分代码省略.........

bool Textord::clean_noise_from_row(          //remove empties
        ROW* row  //row to clean
) {
  bool testing_on;
  TBOX blob_box;                 //bounding box
  C_BLOB *blob;                  //current blob
  C_OUTLINE *outline;            //current outline
  WERD *word;                    //current word
  int32_t blob_size;             //biggest size
  int32_t trans_count = 0;       //no of transitions
  int32_t trans_threshold;       //noise tolerance
  int32_t dot_count;             //small objects
  int32_t norm_count;            //normal objects
  int32_t super_norm_count;      //real char-like
                                 //words of row
  WERD_IT word_it = row->word_list ();
  C_BLOB_IT blob_it;             //blob iterator
  C_OUTLINE_IT out_it;           //outline iterator

  testing_on = textord_test_y > row->base_line (textord_test_x)
               && textord_show_blobs
               && textord_test_y < row->base_line (textord_test_x) + row->x_height ();
  dot_count = 0;
  norm_count = 0;
  super_norm_count = 0;
  for (word_it.mark_cycle_pt (); !word_it.cycled_list (); word_it.forward ()) {
    word = word_it.data ();      //current word
                                 //blobs in word
    blob_it.set_to_list (word->cblob_list ());
    for (blob_it.mark_cycle_pt (); !blob_it.cycled_list ();
    blob_it.forward ()) {
      blob = blob_it.data ();
      if (!word->flag (W_DONT_CHOP)) {
                                 //get outlines
        out_it.set_to_list (blob->out_list ());
        for (out_it.mark_cycle_pt (); !out_it.cycled_list ();
        out_it.forward ()) {
          outline = out_it.data ();
          blob_box = outline->bounding_box ();
          blob_size =
            blob_box.width () >
            blob_box.height ()? blob_box.width () : blob_box.
            height();
          if (blob_size < textord_noise_sizelimit * row->x_height ())
            dot_count++;         //count smal outlines
          if (!outline->child ()->empty ()
            && blob_box.height () <
            (1 + textord_noise_syfract) * row->x_height ()
            && blob_box.height () >
            (1 - textord_noise_syfract) * row->x_height ()
            && blob_box.width () <
            (1 + textord_noise_sxfract) * row->x_height ()
            && blob_box.width () >
            (1 - textord_noise_sxfract) * row->x_height ())
            super_norm_count++;  //count smal outlines
        }
      }
      else
        super_norm_count++;
      blob_box = blob->bounding_box ();
      blob_size =
        blob_box.width () >
        blob_box.height ()? blob_box.width () : blob_box.height ();
      if (blob_size >= textord_noise_sizelimit * row->x_height ()
          && blob_size < row->x_height () * 2) {
        trans_threshold = blob_size / textord_noise_sizefraction;
        trans_count = blob->count_transitions (trans_threshold);
        if (trans_count < textord_noise_translimit)
          norm_count++;
      }
      else if (blob_box.height () > row->x_height () * 2
        && (!word_it.at_first () || !blob_it.at_first ()))
        dot_count += 2;
      if (testing_on) {
        tprintf
          ("Blob at (%d,%d) -> (%d,%d), ols=%d, tc=%d, bldiff=%g\n",
          blob_box.left (), blob_box.bottom (), blob_box.right (),
          blob_box.top (), blob->out_list ()->length (), trans_count,
          blob_box.bottom () - row->base_line (blob_box.left ()));
      }
    }
  }
  if (textord_noise_debug) {
    tprintf ("Row ending at (%d,%g):",
      blob_box.right (), row->base_line (blob_box.right ()));
    tprintf (" R=%g, dc=%d, nc=%d, %s\n",
      norm_count > 0 ? (float) dot_count / norm_count : 9999,
      dot_count, norm_count,
      dot_count > norm_count * textord_noise_normratio
      && dot_count > 2 ? "REJECTED" : "ACCEPTED");
  }
  return super_norm_count < textord_noise_sncount
    && dot_count > norm_count * textord_noise_rowratio && dot_count > 2;
}

/// Consume all source blobs that strongly overlap the given box,
/// putting them into a new word, with the correct_text label.
/// Fights over which box owns which blobs are settled by
/// applying the blobs to box or next_box with the least non-overlap.
/// @return false if the box was in error, which can only be caused by
/// failing to find an overlapping blob for a box.
bool Tesseract::ResegmentWordBox(BLOCK_LIST *block_list,
                                 const TBOX& box, const TBOX& next_box,
                                 const char* correct_text) {
  if (applybox_debug > 1) {
    tprintf("\nAPPLY_BOX: in ResegmentWordBox() for %s\n", correct_text);
  }
  WERD* new_word = NULL;
  BLOCK_IT b_it(block_list);
  for (b_it.mark_cycle_pt(); !b_it.cycled_list(); b_it.forward()) {
    BLOCK* block = b_it.data();
    if (!box.major_overlap(block->bounding_box()))
      continue;
    ROW_IT r_it(block->row_list());
    for (r_it.mark_cycle_pt(); !r_it.cycled_list(); r_it.forward()) {
      ROW* row = r_it.data();
      if (!box.major_overlap(row->bounding_box()))
        continue;
      WERD_IT w_it(row->word_list());
      for (w_it.mark_cycle_pt(); !w_it.cycled_list(); w_it.forward()) {
        WERD* word = w_it.data();
        if (applybox_debug > 2) {
          tprintf("Checking word:");
          word->bounding_box().print();
        }
        if (word->text() != NULL && word->text()[0] != '\0')
          continue;  // Ignore words that are already done.
        if (!box.major_overlap(word->bounding_box()))
          continue;
        C_BLOB_IT blob_it(word->cblob_list());
        for (blob_it.mark_cycle_pt(); !blob_it.cycled_list();
             blob_it.forward()) {
          C_BLOB* blob = blob_it.data();
          TBOX blob_box = blob->bounding_box();
          if (!blob_box.major_overlap(box))
            continue;
          double current_box_miss_metric = BoxMissMetric(blob_box, box);
          double next_box_miss_metric = BoxMissMetric(blob_box, next_box);
          if (applybox_debug > 2) {
            tprintf("Checking blob:");
            blob_box.print();
            tprintf("Current miss metric = %g, next = %g\n",
                    current_box_miss_metric, next_box_miss_metric);
          }
          if (current_box_miss_metric > next_box_miss_metric)
            continue;  // Blob is a better match for next box.
          if (applybox_debug > 2) {
            tprintf("Blob match: blob:");
            blob_box.print();
            tprintf("Matches box:");
            box.print();
            tprintf("With next box:");
            next_box.print();
          }
          if (new_word == NULL) {
            // Make a new word with a single blob.
            new_word = word->shallow_copy();
            new_word->set_text(correct_text);
            w_it.add_to_end(new_word);
          }
          C_BLOB_IT new_blob_it(new_word->cblob_list());
          new_blob_it.add_to_end(blob_it.extract());
        }
      }
    }
  }
  if (new_word == NULL && applybox_debug > 0) tprintf("FAIL!\n");
  return new_word != NULL;
}

void tweak_row_baseline(ROW *row,
                        double blshift_maxshift,
                        double blshift_xfraction) {
  TBOX blob_box;                 //bounding box
  C_BLOB *blob;                  //current blob
  WERD *word;                    //current word
  inT32 blob_count;              //no of blobs
  inT32 src_index;               //source segment
  inT32 dest_index;              //destination segment
  inT32 *xstarts;                //spline segments
  double *coeffs;                //spline coeffs
  float ydiff;                   //baseline error
  float x_centre;                //centre of blob
                                 //words of row
  WERD_IT word_it = row->word_list ();
  C_BLOB_IT blob_it;             //blob iterator

  blob_count = 0;
  for (word_it.mark_cycle_pt (); !word_it.cycled_list (); word_it.forward ()) {
    word = word_it.data ();      //current word
                                 //get total blobs
    blob_count += word->cblob_list ()->length ();
  }
  if (blob_count == 0)
    return;
  xstarts =
    (inT32 *) alloc_mem ((blob_count + row->baseline.segments + 1) *
    sizeof (inT32));
  coeffs =
    (double *) alloc_mem ((blob_count + row->baseline.segments) * 3 *
    sizeof (double));

  src_index = 0;
  dest_index = 0;
  xstarts[0] = row->baseline.xcoords[0];
  for (word_it.mark_cycle_pt (); !word_it.cycled_list (); word_it.forward ()) {
    word = word_it.data ();      //current word
                                 //blobs in word
    blob_it.set_to_list (word->cblob_list ());
    for (blob_it.mark_cycle_pt (); !blob_it.cycled_list ();
    blob_it.forward ()) {
      blob = blob_it.data ();
      blob_box = blob->bounding_box ();
      x_centre = (blob_box.left () + blob_box.right ()) / 2.0;
      ydiff = blob_box.bottom () - row->base_line (x_centre);
      if (ydiff < 0)
        ydiff = -ydiff / row->x_height ();
      else
        ydiff = ydiff / row->x_height ();
      if (ydiff < blshift_maxshift
        && blob_box.height () / row->x_height () > blshift_xfraction) {
        if (xstarts[dest_index] >= x_centre)
          xstarts[dest_index] = blob_box.left ();
        coeffs[dest_index * 3] = 0;
        coeffs[dest_index * 3 + 1] = 0;
        coeffs[dest_index * 3 + 2] = blob_box.bottom ();
        //shift it
        dest_index++;
        xstarts[dest_index] = blob_box.right () + 1;
      }
      else {
        if (xstarts[dest_index] <= x_centre) {
          while (row->baseline.xcoords[src_index + 1] <= x_centre
          && src_index < row->baseline.segments - 1) {
            if (row->baseline.xcoords[src_index + 1] >
            xstarts[dest_index]) {
              coeffs[dest_index * 3] =
                row->baseline.quadratics[src_index].a;
              coeffs[dest_index * 3 + 1] =
                row->baseline.quadratics[src_index].b;
              coeffs[dest_index * 3 + 2] =
                row->baseline.quadratics[src_index].c;
              dest_index++;
              xstarts[dest_index] =
                row->baseline.xcoords[src_index + 1];
            }
            src_index++;
          }
          coeffs[dest_index * 3] =
            row->baseline.quadratics[src_index].a;
          coeffs[dest_index * 3 + 1] =
            row->baseline.quadratics[src_index].b;
          coeffs[dest_index * 3 + 2] =
            row->baseline.quadratics[src_index].c;
          dest_index++;
          xstarts[dest_index] = row->baseline.xcoords[src_index + 1];
        }
      }
    }
  }
  while (src_index < row->baseline.segments
    && row->baseline.xcoords[src_index + 1] <= xstarts[dest_index])
    src_index++;
  while (src_index < row->baseline.segments) {
    coeffs[dest_index * 3] = row->baseline.quadratics[src_index].a;
    coeffs[dest_index * 3 + 1] = row->baseline.quadratics[src_index].b;
    coeffs[dest_index * 3 + 2] = row->baseline.quadratics[src_index].c;
    dest_index++;
    src_index++;
    xstarts[dest_index] = row->baseline.xcoords[src_index];
//.........这里部分代码省略.........

void Textord::clean_noise_from_words(          //remove empties
                                     ROW *row  //row to clean
                                    ) {
  TBOX blob_box;                  //bounding box
  inT8 *word_dud;                //was it chucked
  C_BLOB *blob;                  //current blob
  C_OUTLINE *outline;            //current outline
  WERD *word;                    //current word
  inT32 blob_size;               //biggest size
  inT32 trans_count;             //no of transitions
  inT32 trans_threshold;         //noise tolerance
  inT32 dot_count;               //small objects
  inT32 norm_count;              //normal objects
  inT32 dud_words;               //number discarded
  inT32 ok_words;                //number remaining
  inT32 word_index;              //current word
                                 //words of row
  WERD_IT word_it = row->word_list ();
  C_BLOB_IT blob_it;             //blob iterator
  C_OUTLINE_IT out_it;           //outline iterator

  ok_words = word_it.length ();
  if (ok_words == 0 || textord_no_rejects)
    return;
  word_dud = (inT8 *) alloc_mem (ok_words * sizeof (inT8));
  dud_words = 0;
  ok_words = 0;
  word_index = 0;
  for (word_it.mark_cycle_pt (); !word_it.cycled_list (); word_it.forward ()) {
    word = word_it.data ();      //current word
    dot_count = 0;
    norm_count = 0;
                                 //blobs in word
    blob_it.set_to_list (word->cblob_list ());
    for (blob_it.mark_cycle_pt (); !blob_it.cycled_list ();
    blob_it.forward ()) {
      blob = blob_it.data ();
      if (!word->flag (W_DONT_CHOP)) {
                                 //get outlines
        out_it.set_to_list (blob->out_list ());
        for (out_it.mark_cycle_pt (); !out_it.cycled_list ();
        out_it.forward ()) {
          outline = out_it.data ();
          blob_box = outline->bounding_box ();
          blob_size =
            blob_box.width () >
            blob_box.height ()? blob_box.width () : blob_box.
            height();
          if (blob_size < textord_noise_sizelimit * row->x_height ())
            dot_count++;         //count smal outlines
          if (!outline->child ()->empty ()
            && blob_box.height () <
            (1 + textord_noise_syfract) * row->x_height ()
            && blob_box.height () >
            (1 - textord_noise_syfract) * row->x_height ()
            && blob_box.width () <
            (1 + textord_noise_sxfract) * row->x_height ()
            && blob_box.width () >
            (1 - textord_noise_sxfract) * row->x_height ())
            norm_count++;        //count smal outlines
        }
      }
      else
        norm_count++;
      blob_box = blob->bounding_box ();
      blob_size =
        blob_box.width () >
        blob_box.height ()? blob_box.width () : blob_box.height ();
      if (blob_size >= textord_noise_sizelimit * row->x_height ()
      && blob_size < row->x_height () * 2) {
        trans_threshold = blob_size / textord_noise_sizefraction;
        trans_count = blob->count_transitions (trans_threshold);
        if (trans_count < textord_noise_translimit)
          norm_count++;
      }
      else if (blob_box.height () > row->x_height () * 2
        && (!word_it.at_first () || !blob_it.at_first ()))
        dot_count += 2;
    }
    if (dot_count > 2) {
      if (dot_count > norm_count * textord_noise_normratio * 2)
        word_dud[word_index] = 2;
      else if (dot_count > norm_count * textord_noise_normratio)
        word_dud[word_index] = 1;
      else
        word_dud[word_index] = 0;
    }
    else
      word_dud[word_index] = 0;
    if (word_dud[word_index] == 2)
      dud_words++;
    else
      ok_words++;
    word_index++;
  }

  word_index = 0;
  for (word_it.mark_cycle_pt (); !word_it.cycled_list (); word_it.forward ()) {
    if (word_dud[word_index] == 2
    || (word_dud[word_index] == 1 && dud_words > ok_words)) {
//.........这里部分代码省略.........