Mercurial > hgrepos > Python2 > PyMuPDF
annotate mupdf-source/thirdparty/tesseract/src/ccstruct/boxword.h @ 2:b50eed0cc0ef upstream
ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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| author | Franz Glasner <fzglas.hg@dom66.de> |
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| date | Mon, 15 Sep 2025 11:43:07 +0200 |
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1 /////////////////////////////////////////////////////////////////////// |
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2 // File: boxword.h |
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3 // Description: Class to represent the bounding boxes of the output. |
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4 // Author: Ray Smith |
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5 // |
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6 // (C) Copyright 2010, Google Inc. |
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7 // Licensed under the Apache License, Version 2.0 (the "License"); |
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8 // you may not use this file except in compliance with the License. |
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9 // You may obtain a copy of the License at |
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10 // http://www.apache.org/licenses/LICENSE-2.0 |
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11 // Unless required by applicable law or agreed to in writing, software |
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12 // distributed under the License is distributed on an "AS IS" BASIS, |
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13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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14 // See the License for the specific language governing permissions and |
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15 // limitations under the License. |
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16 // |
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17 /////////////////////////////////////////////////////////////////////// |
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18 |
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19 #ifndef TESSERACT_CSTRUCT_BOXWORD_H_ |
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20 #define TESSERACT_CSTRUCT_BOXWORD_H_ |
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21 |
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22 #include "rect.h" // for TBOX |
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23 |
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24 #include <functional> // for std::function |
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25 |
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26 namespace tesseract { |
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27 |
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28 class BLOCK; |
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29 class WERD; |
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30 struct TWERD; |
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31 |
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32 // Class to hold an array of bounding boxes for an output word and |
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33 // the bounding box of the whole word. |
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34 class BoxWord { |
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35 public: |
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36 BoxWord(); |
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37 explicit BoxWord(const BoxWord &src); |
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38 ~BoxWord() = default; |
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39 |
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40 BoxWord &operator=(const BoxWord &src); |
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41 |
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42 void CopyFrom(const BoxWord &src); |
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43 |
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44 // Factory to build a BoxWord from a TWERD using the DENORMs on each blob to |
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45 // switch back to original image coordinates. |
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46 static BoxWord *CopyFromNormalized(TWERD *tessword); |
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47 |
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48 // Clean up the bounding boxes from the polygonal approximation by |
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49 // expanding slightly, then clipping to the blobs from the original_word |
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50 // that overlap. If not null, the block provides the inverse rotation. |
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51 void ClipToOriginalWord(const BLOCK *block, WERD *original_word); |
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52 |
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53 // Merges the boxes from start to end, not including end, and deletes |
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54 // the boxes between start and end. |
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55 void MergeBoxes(unsigned start, unsigned end); |
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56 |
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57 // Inserts a new box before the given index. |
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58 // Recomputes the bounding box. |
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59 void InsertBox(unsigned index, const TBOX &box); |
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60 |
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61 // Changes the box at the given index to the new box. |
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62 // Recomputes the bounding box. |
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63 void ChangeBox(unsigned index, const TBOX &box); |
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64 |
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65 // Deletes the box with the given index, and shuffles up the rest. |
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66 // Recomputes the bounding box. |
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67 void DeleteBox(unsigned index); |
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68 |
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69 // Deletes all the boxes stored in BoxWord. |
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70 void DeleteAllBoxes(); |
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71 |
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72 // This and other putatively are the same, so call the (permanent) callback |
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73 // for each blob index where the bounding boxes match. |
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74 // The callback is deleted on completion. |
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75 void ProcessMatchedBlobs(const TWERD &other, |
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76 const std::function<void(int)> &cb) const; |
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77 |
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78 const TBOX &bounding_box() const { |
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79 return bbox_; |
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80 } |
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81 unsigned length() const { |
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82 return length_; |
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83 } |
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84 const TBOX &BlobBox(unsigned index) const { |
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85 return boxes_[index]; |
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86 } |
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87 |
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88 private: |
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89 void ComputeBoundingBox(); |
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90 |
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91 TBOX bbox_; |
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92 unsigned length_; |
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93 std::vector<TBOX> boxes_; |
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94 }; |
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95 |
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96 } // namespace tesseract. |
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97 |
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98 #endif // TESSERACT_CSTRUCT_BOXWORD_H_ |
