Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/api/wordstrboxrenderer.cpp @ 46:7ee69f120f19 default tip

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>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /**********************************************************************
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2 * File: wordstrboxrenderer.cpp
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3 * Description: Renderer for creating box file with WordStr strings.
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4 * based on the tsv renderer.
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5 *
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6 * (C) Copyright 2019, 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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19 #include <tesseract/baseapi.h> // for TessBaseAPI
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20 #include <tesseract/renderer.h>
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21 #include "helpers.h" // for copy_string
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22 #include "tesseractclass.h" // for Tesseract
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24 namespace tesseract {
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26 /**
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27 * Create a UTF8 box file with WordStr strings from the internal data
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28 * structures. page_number is a 0-base page index that will appear in the box
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29 * file. Returned string must be freed with the delete [] operator.
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30 */
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32 char *TessBaseAPI::GetWordStrBoxText(int page_number = 0) {
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33 if (tesseract_ == nullptr || (page_res_ == nullptr && Recognize(nullptr) < 0)) {
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34 return nullptr;
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35 }
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37 std::string wordstr_box_str;
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38 int left = 0, top = 0, right = 0, bottom = 0;
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40 bool first_line = true;
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42 LTRResultIterator *res_it = GetLTRIterator();
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43 while (!res_it->Empty(RIL_BLOCK)) {
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44 if (res_it->Empty(RIL_WORD)) {
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45 res_it->Next(RIL_WORD);
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46 continue;
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47 }
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49 if (res_it->IsAtBeginningOf(RIL_TEXTLINE)) {
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50 if (!first_line) {
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51 wordstr_box_str += "\n\t " + std::to_string(right + 1);
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52 wordstr_box_str += " " + std::to_string(image_height_ - bottom);
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53 wordstr_box_str += " " + std::to_string(right + 5);
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54 wordstr_box_str += " " + std::to_string(image_height_ - top);
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55 wordstr_box_str += " " + std::to_string(page_number); // row for tab for EOL
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56 wordstr_box_str += "\n";
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57 } else {
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58 first_line = false;
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59 }
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60 // Use bounding box for whole line for WordStr
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61 res_it->BoundingBox(RIL_TEXTLINE, &left, &top, &right, &bottom);
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62 wordstr_box_str += "WordStr " + std::to_string(left);
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63 wordstr_box_str += " " + std::to_string(image_height_ - bottom);
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64 wordstr_box_str += " " + std::to_string(right);
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65 wordstr_box_str += " " + std::to_string(image_height_ - top);
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66 wordstr_box_str += " " + std::to_string(page_number); // word
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67 wordstr_box_str += " #";
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68 }
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69 do {
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70 wordstr_box_str += std::unique_ptr<const char[]>(res_it->GetUTF8Text(RIL_WORD)).get();
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71 wordstr_box_str += " ";
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72 res_it->Next(RIL_WORD);
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73 } while (!res_it->Empty(RIL_BLOCK) && !res_it->IsAtBeginningOf(RIL_WORD));
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74 }
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75
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76 if (left != 0 && top != 0 && right != 0 && bottom != 0) {
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77 wordstr_box_str += "\n\t " + std::to_string(right + 1);
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78 wordstr_box_str += " " + std::to_string(image_height_ - bottom);
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79 wordstr_box_str += " " + std::to_string(right + 5);
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80 wordstr_box_str += " " + std::to_string(image_height_ - top);
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81 wordstr_box_str += " " + std::to_string(page_number); // row for tab for EOL
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82 wordstr_box_str += "\n";
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83 }
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84 delete res_it;
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85 return copy_string(wordstr_box_str);
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86 }
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87
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88 /**********************************************************************
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89 * WordStrBox Renderer interface implementation
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90 **********************************************************************/
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91 TessWordStrBoxRenderer::TessWordStrBoxRenderer(const char *outputbase)
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92 : TessResultRenderer(outputbase, "box") {}
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93
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94 bool TessWordStrBoxRenderer::AddImageHandler(TessBaseAPI *api) {
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95 const std::unique_ptr<const char[]> wordstrbox(api->GetWordStrBoxText(imagenum()));
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96 if (wordstrbox == nullptr) {
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97 return false;
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98 }
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99
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100 AppendString(wordstrbox.get());
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101
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102 return true;
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103 }
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104
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105 } // namespace tesseract.