tesseract  3.03
/usr/local/google/home/jbreiden/tesseract-ocr-read-only/textord/edgblob.h File Reference
#include "scrollview.h"
#include "params.h"
#include "ocrblock.h"
#include "coutln.h"
#include "crakedge.h"

Go to the source code of this file.

Classes

class  OL_BUCKETS

Defines

#define BUCKETSIZE   16

Functions

void extract_edges (Pix *pix, BLOCK *block)
void outlines_to_blobs (BLOCK *block, ICOORD bleft, ICOORD tright, C_OUTLINE_LIST *outlines)
void fill_buckets (C_OUTLINE_LIST *outlines, OL_BUCKETS *buckets)
void empty_buckets (BLOCK *block, OL_BUCKETS *buckets)
BOOL8 capture_children (OL_BUCKETS *buckets, C_BLOB_IT *reject_it, C_OUTLINE_IT *blob_it)

Define Documentation

#define BUCKETSIZE   16

Definition at line 29 of file edgblob.h.


Function Documentation

BOOL8 capture_children ( OL_BUCKETS buckets,
C_BLOB_IT *  reject_it,
C_OUTLINE_IT *  blob_it 
)

Definition at line 440 of file edgblob.cpp.

                        {
  C_OUTLINE *outline;            // master outline
  inT32 child_count;             // no of children

  outline = blob_it->data();
  if (edges_use_new_outline_complexity)
    child_count = buckets->outline_complexity(outline,
                                               edges_children_count_limit,
                                               0);
  else
    child_count = buckets->count_children(outline,
                                           edges_children_count_limit);
  if (child_count > edges_children_count_limit)
    return FALSE;

  if (child_count > 0)
    buckets->extract_children(outline, blob_it);
  return TRUE;
}
void empty_buckets ( BLOCK block,
OL_BUCKETS buckets 
)

Definition at line 398 of file edgblob.cpp.

                    {
  BOOL8 good_blob;               // healthy blob
  C_OUTLINE_LIST outlines;       // outlines in block
                                 // iterator
  C_OUTLINE_IT out_it = &outlines;
  C_OUTLINE_IT bucket_it = buckets->start_scan();
  C_OUTLINE_IT parent_it;        // parent outline
  C_BLOB_IT good_blobs = block->blob_list();
  C_BLOB_IT junk_blobs = block->reject_blobs();

  while (!bucket_it.empty()) {
    out_it.set_to_list(&outlines);
    do {
      parent_it = bucket_it;     // find outermost
      do {
        bucket_it.forward();
      } while (!bucket_it.at_first() &&
               !(*parent_it.data() < *bucket_it.data()));
    } while (!bucket_it.at_first());

                                 // move to new list
    out_it.add_after_then_move(parent_it.extract());
    good_blob = capture_children(buckets, &junk_blobs, &out_it);
    C_BLOB::ConstructBlobsFromOutlines(good_blob, &outlines, &good_blobs,
                                       &junk_blobs);

    bucket_it.set_to_list(buckets->scan_next());
  }
}
void extract_edges ( Pix *  pix,
BLOCK block 
)

Definition at line 334 of file edgblob.cpp.

                                 {  // block to scan
  C_OUTLINE_LIST outlines;       // outlines in block
  C_OUTLINE_IT out_it = &outlines;

  block_edges(pix, block, &out_it);
  ICOORD bleft;                  // block box
  ICOORD tright;
  block->bounding_box(bleft, tright);
                                 // make blobs
  outlines_to_blobs(block, bleft, tright, &outlines);
}
void fill_buckets ( C_OUTLINE_LIST *  outlines,
OL_BUCKETS buckets 
)

Definition at line 373 of file edgblob.cpp.

                   {
  TBOX ol_box;                     // outline box
  C_OUTLINE_IT out_it = outlines;  // iterator
  C_OUTLINE_IT bucket_it;          // iterator in bucket
  C_OUTLINE *outline;              // current outline

  for (out_it.mark_cycle_pt(); !out_it.cycled_list(); out_it.forward()) {
    outline = out_it.extract();  // take off list
                                 // get box
    ol_box = outline->bounding_box();
    bucket_it.set_to_list((*buckets) (ol_box.left(), ol_box.bottom()));
    bucket_it.add_to_end(outline);
  }
}
void outlines_to_blobs ( BLOCK block,
ICOORD  bleft,
ICOORD  tright,
C_OUTLINE_LIST *  outlines 
)

Definition at line 354 of file edgblob.cpp.

                                                 {
                                 // make buckets
  OL_BUCKETS buckets(bleft, tright);

  fill_buckets(outlines, &buckets);
  empty_buckets(block, &buckets);
}
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