tesseract  5.0.0
edgblob.h
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1 /**********************************************************************
2  * File: edgblob.h (Formerly edgeloop.h)
3  * Description: Functions to clean up an outline before approximation.
4  * Author: Ray Smith
5  *
6  * (C) Copyright 1991, Hewlett-Packard Ltd.
7  ** Licensed under the Apache License, Version 2.0 (the "License");
8  ** you may not use this file except in compliance with the License.
9  ** You may obtain a copy of the License at
10  ** http://www.apache.org/licenses/LICENSE-2.0
11  ** Unless required by applicable law or agreed to in writing, software
12  ** distributed under the License is distributed on an "AS IS" BASIS,
13  ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  ** See the License for the specific language governing permissions and
15  ** limitations under the License.
16  *
17  **********************************************************************/
18 
19 #ifndef EDGBLOB_H
20 #define EDGBLOB_H
21 
22 #include "coutln.h" // for C_OUTLINE
23 #include "ocrblock.h" // for BLOCK
24 #include "points.h" // for ICOORD
25 
26 #include <vector>
27 
28 namespace tesseract {
29 
30 class OL_BUCKETS {
31 public:
32  OL_BUCKETS( // constructor
33  ICOORD bleft, // corners
34  ICOORD tright);
35 
36  C_OUTLINE_LIST *operator()( // array access
37  TDimension x, // image coords
38  TDimension y);
39  // first non-empty bucket
40  C_OUTLINE_LIST *start_scan();
41  // next non-empty bucket
42  C_OUTLINE_LIST *scan_next();
43  int32_t count_children( // recursive sum
44  C_OUTLINE *outline, // parent outline
45  int32_t max_count); // max output
46  int32_t outline_complexity( // new version of count_children
47  C_OUTLINE *outline, // parent outline
48  int32_t max_count, // max output
49  int16_t depth); // level of recursion
50  void extract_children( // single level get
51  C_OUTLINE *outline, // parent outline
52  C_OUTLINE_IT *it); // destination iterator
53 
54 private:
55  int16_t bxdim; // size of array
56  int16_t bydim;
57  std::vector<C_OUTLINE_LIST> buckets; // array of buckets
58  ICOORD bl; // corners
59  ICOORD tr;
60  decltype(buckets)::iterator it; // for extraction scan
61 
62  C_OUTLINE_LIST *scan_next(decltype(buckets)::iterator it);
63 };
64 
65 void extract_edges(Image pix, // thresholded image
66  BLOCK *block); // block to scan
67 void outlines_to_blobs( // find blobs
68  BLOCK *block, // block to scan
69  ICOORD bleft, // block box //outlines in block
70  ICOORD tright, C_OUTLINE_LIST *outlines);
71 
72 } // namespace tesseract
73 
74 #endif
void outlines_to_blobs(BLOCK *block, ICOORD bleft, ICOORD tright, C_OUTLINE_LIST *outlines)
Definition: edgblob.cpp:460
int16_t TDimension
Definition: tesstypes.h:32
void extract_edges(Image pix, BLOCK *block)
Definition: edgblob.cpp:347
integer coordinate
Definition: points.h:36
void extract_children(C_OUTLINE *outline, C_OUTLINE_IT *it)
Definition: edgblob.cpp:318
OL_BUCKETS(ICOORD bleft, ICOORD tright)
Definition: edgblob.cpp:64
C_OUTLINE_LIST * start_scan()
Definition: edgblob.cpp:86
C_OUTLINE_LIST * scan_next()
Definition: edgblob.cpp:90
int32_t outline_complexity(C_OUTLINE *outline, int32_t max_count, int16_t depth)
Definition: edgblob.cpp:121
int32_t count_children(C_OUTLINE *outline, int32_t max_count)
Definition: edgblob.cpp:195
C_OUTLINE_LIST * operator()(TDimension x, TDimension y)
Definition: edgblob.cpp:79