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comparison mupdf-source/thirdparty/tesseract/src/textord/edgblob.h @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
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