Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/classify/intproto.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 /******************************************************************************
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2 ** Filename: intproto.h
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3 ** Purpose: Definition of data structures for integer protos.
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4 ** Author: Dan Johnson
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5 **
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6 ** (c) Copyright Hewlett-Packard Company, 1988.
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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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18 #ifndef INTPROTO_H
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19 #define INTPROTO_H
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21 /**----------------------------------------------------------------------------
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22 Include Files and Type Defines
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23 ----------------------------------------------------------------------------**/
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24 #include "matchdefs.h"
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25 #include "mfoutline.h"
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26 #include "protos.h"
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27 #include "scrollview.h"
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28 #include "unicharset.h"
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30 namespace tesseract {
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32 class FCOORD;
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34 /* define order of params in pruners */
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35 #define PRUNER_X 0
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36 #define PRUNER_Y 1
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37 #define PRUNER_ANGLE 2
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39 /* definition of coordinate system offsets for each table parameter */
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40 #define ANGLE_SHIFT (0.0)
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41 #define X_SHIFT (0.5)
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42 #define Y_SHIFT (0.5)
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44 #define MAX_PROTO_INDEX 24
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45 #define BITS_PER_WERD static_cast<int>(8 * sizeof(uint32_t))
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46 /* Script detection: increase this number to 128 */
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47 #define MAX_NUM_CONFIGS 64
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48 #define MAX_NUM_PROTOS 512
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49 #define PROTOS_PER_PROTO_SET 64
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50 #define MAX_NUM_PROTO_SETS (MAX_NUM_PROTOS / PROTOS_PER_PROTO_SET)
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51 #define NUM_PP_PARAMS 3
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52 #define NUM_PP_BUCKETS 64
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53 #define NUM_CP_BUCKETS 24
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54 #define CLASSES_PER_CP 32
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55 #define NUM_BITS_PER_CLASS 2
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56 #define CLASS_PRUNER_CLASS_MASK (~(~0u << NUM_BITS_PER_CLASS))
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57 #define CLASSES_PER_CP_WERD (CLASSES_PER_CP / NUM_BITS_PER_CLASS)
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58 #define PROTOS_PER_PP_WERD BITS_PER_WERD
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59 #define BITS_PER_CP_VECTOR (CLASSES_PER_CP * NUM_BITS_PER_CLASS)
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60 #define MAX_NUM_CLASS_PRUNERS ((MAX_NUM_CLASSES + CLASSES_PER_CP - 1) / CLASSES_PER_CP)
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61 #define WERDS_PER_CP_VECTOR (BITS_PER_CP_VECTOR / BITS_PER_WERD)
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62 #define WERDS_PER_PP_VECTOR ((PROTOS_PER_PROTO_SET + BITS_PER_WERD - 1) / BITS_PER_WERD)
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63 #define WERDS_PER_PP (NUM_PP_PARAMS * NUM_PP_BUCKETS * WERDS_PER_PP_VECTOR)
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64 #define WERDS_PER_CP (NUM_CP_BUCKETS * NUM_CP_BUCKETS * NUM_CP_BUCKETS * WERDS_PER_CP_VECTOR)
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65 #define WERDS_PER_CONFIG_VEC ((MAX_NUM_CONFIGS + BITS_PER_WERD - 1) / BITS_PER_WERD)
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66
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67 /* The first 3 dimensions of the CLASS_PRUNER_STRUCT are the
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68 * 3 axes of the quantized feature space.
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69 * The position of the bits recorded for each class in the
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70 * 4th dimension is determined by using CPrunerWordIndexFor(c),
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71 * where c is the corresponding class id. */
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72 struct CLASS_PRUNER_STRUCT {
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73 uint32_t p[NUM_CP_BUCKETS][NUM_CP_BUCKETS][NUM_CP_BUCKETS][WERDS_PER_CP_VECTOR];
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74 };
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76 struct INT_PROTO_STRUCT {
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77 int8_t A;
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78 uint8_t B;
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79 int8_t C;
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80 uint8_t Angle;
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81 uint32_t Configs[WERDS_PER_CONFIG_VEC];
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82 };
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83
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84 typedef uint32_t PROTO_PRUNER[NUM_PP_PARAMS][NUM_PP_BUCKETS][WERDS_PER_PP_VECTOR];
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85
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86 struct PROTO_SET_STRUCT {
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87 PROTO_PRUNER ProtoPruner;
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88 INT_PROTO_STRUCT Protos[PROTOS_PER_PROTO_SET];
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89 };
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91 typedef uint32_t CONFIG_PRUNER[NUM_PP_PARAMS][NUM_PP_BUCKETS][4];
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92
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93 struct INT_CLASS_STRUCT {
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94 INT_CLASS_STRUCT() = default;
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95 INT_CLASS_STRUCT(int MaxNumProtos, int MaxNumConfigs);
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96 ~INT_CLASS_STRUCT();
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97 uint16_t NumProtos = 0;
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98 uint8_t NumProtoSets = 0;
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99 uint8_t NumConfigs = 0;
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100 PROTO_SET_STRUCT *ProtoSets[MAX_NUM_PROTO_SETS];
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101 std::vector<uint8_t> ProtoLengths;
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102 uint16_t ConfigLengths[MAX_NUM_CONFIGS];
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103 int font_set_id = 0; // FontSet id, see above
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104 };
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105
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106 struct TESS_API INT_TEMPLATES_STRUCT {
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107 INT_TEMPLATES_STRUCT();
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108 ~INT_TEMPLATES_STRUCT();
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109 unsigned NumClasses;
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110 unsigned NumClassPruners;
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111 INT_CLASS_STRUCT *Class[MAX_NUM_CLASSES];
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112 CLASS_PRUNER_STRUCT *ClassPruners[MAX_NUM_CLASS_PRUNERS];
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113 };
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114
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115 /* definitions of integer features*/
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116 #define MAX_NUM_INT_FEATURES 512
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117 #define INT_CHAR_NORM_RANGE 256
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118
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119 struct INT_FEATURE_STRUCT {
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120 INT_FEATURE_STRUCT() : X(0), Y(0), Theta(0), CP_misses(0) {}
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121 // Builds a feature from an FCOORD for position with all the necessary
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122 // clipping and rounding.
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123 INT_FEATURE_STRUCT(const FCOORD &pos, uint8_t theta);
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124 // Builds a feature from ints with all the necessary clipping and casting.
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125 INT_FEATURE_STRUCT(int x, int y, int theta);
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126
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127 uint8_t X;
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128 uint8_t Y;
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129 uint8_t Theta;
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130 int8_t CP_misses;
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131
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132 void print() const {
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133 tprintf("(%d,%d):%d\n", X, Y, Theta);
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134 }
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135 };
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136
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137 typedef INT_FEATURE_STRUCT INT_FEATURE_ARRAY[MAX_NUM_INT_FEATURES];
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138
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139 enum IntmatcherDebugAction { IDA_ADAPTIVE, IDA_STATIC, IDA_SHAPE_INDEX, IDA_BOTH };
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140
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141 /**----------------------------------------------------------------------------
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142 Macros
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143 ----------------------------------------------------------------------------**/
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144
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145 #define MaxNumIntProtosIn(C) (C->NumProtoSets * PROTOS_PER_PROTO_SET)
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146 #define SetForProto(P) (P / PROTOS_PER_PROTO_SET)
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147 #define IndexForProto(P) (P % PROTOS_PER_PROTO_SET)
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148 #define ProtoForProtoId(C, P) (&((C->ProtoSets[SetForProto(P)])->Protos[IndexForProto(P)]))
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149 #define PPrunerWordIndexFor(I) (((I) % PROTOS_PER_PROTO_SET) / PROTOS_PER_PP_WERD)
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150 #define PPrunerBitIndexFor(I) ((I) % PROTOS_PER_PP_WERD)
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151 #define PPrunerMaskFor(I) (1 << PPrunerBitIndexFor(I))
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152
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153 #define MaxNumClassesIn(T) (T->NumClassPruners * CLASSES_PER_CP)
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154 #define LegalClassId(c) ((c) >= 0 && (c) < MAX_NUM_CLASSES)
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155 #define UnusedClassIdIn(T, c) ((T)->Class[c] == nullptr)
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156 #define ClassForClassId(T, c) ((T)->Class[c])
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157 #define ClassPrunersFor(T) ((T)->ClassPruner)
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158 #define CPrunerIdFor(c) ((c) / CLASSES_PER_CP)
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159 #define CPrunerFor(T, c) ((T)->ClassPruners[CPrunerIdFor(c)])
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160 #define CPrunerWordIndexFor(c) (((c) % CLASSES_PER_CP) / CLASSES_PER_CP_WERD)
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161 #define CPrunerBitIndexFor(c) (((c) % CLASSES_PER_CP) % CLASSES_PER_CP_WERD)
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162 #define CPrunerMaskFor(L, c) (((L) + 1) << CPrunerBitIndexFor(c) * NUM_BITS_PER_CLASS)
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163
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164 /* DEBUG macros*/
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165 #define PRINT_MATCH_SUMMARY 0x001
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166 #define DISPLAY_FEATURE_MATCHES 0x002
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167 #define DISPLAY_PROTO_MATCHES 0x004
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168 #define PRINT_FEATURE_MATCHES 0x008
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169 #define PRINT_PROTO_MATCHES 0x010
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170 #define CLIP_MATCH_EVIDENCE 0x020
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171
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172 #define MatchDebuggingOn(D) (D)
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173 #define PrintMatchSummaryOn(D) ((D)&PRINT_MATCH_SUMMARY)
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174 #define DisplayFeatureMatchesOn(D) ((D)&DISPLAY_FEATURE_MATCHES)
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175 #define DisplayProtoMatchesOn(D) ((D)&DISPLAY_PROTO_MATCHES)
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176 #define PrintFeatureMatchesOn(D) ((D)&PRINT_FEATURE_MATCHES)
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177 #define PrintProtoMatchesOn(D) ((D)&PRINT_PROTO_MATCHES)
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178 #define ClipMatchEvidenceOn(D) ((D)&CLIP_MATCH_EVIDENCE)
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179
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180 /**----------------------------------------------------------------------------
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181 Public Function Prototypes
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182 ----------------------------------------------------------------------------**/
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183 void AddIntClass(INT_TEMPLATES_STRUCT *Templates, CLASS_ID ClassId, INT_CLASS_STRUCT *Class);
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184
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185 int AddIntConfig(INT_CLASS_STRUCT *Class);
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186
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187 int AddIntProto(INT_CLASS_STRUCT *Class);
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188
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189 void AddProtoToClassPruner(PROTO_STRUCT *Proto, CLASS_ID ClassId, INT_TEMPLATES_STRUCT *Templates);
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190
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191 void AddProtoToProtoPruner(PROTO_STRUCT *Proto, int ProtoId, INT_CLASS_STRUCT *Class, bool debug);
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192
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193 uint8_t Bucket8For(float param, float offset, int num_buckets);
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194 uint16_t Bucket16For(float param, float offset, int num_buckets);
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195
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196 uint8_t CircBucketFor(float param, float offset, int num_buckets);
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197
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198 void UpdateMatchDisplay();
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199
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200 void ConvertConfig(BIT_VECTOR Config, int ConfigId, INT_CLASS_STRUCT *Class);
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201
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202 void DisplayIntFeature(const INT_FEATURE_STRUCT *Feature, float Evidence);
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203
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204 void DisplayIntProto(INT_CLASS_STRUCT *Class, PROTO_ID ProtoId, float Evidence);
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205
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206 void ShowMatchDisplay();
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207
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208 #ifndef GRAPHICS_DISABLED
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209 // Clears the given window and draws the featurespace guides for the
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210 // appropriate normalization method.
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211 TESS_API
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212 void ClearFeatureSpaceWindow(NORM_METHOD norm_method, ScrollView *window);
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213 #endif // !GRAPHICS_DISABLED
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214
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215 /*----------------------------------------------------------------------------*/
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216 #ifndef GRAPHICS_DISABLED
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217 TESS_API
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218 void RenderIntFeature(ScrollView *window, const INT_FEATURE_STRUCT *Feature,
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219 ScrollView::Color color);
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220
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221 void InitIntMatchWindowIfReqd();
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222
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223 void InitProtoDisplayWindowIfReqd();
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224
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225 void InitFeatureDisplayWindowIfReqd();
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226
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227 // Creates a window of the appropriate size for displaying elements
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228 // in feature space.
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229 TESS_API
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230 ScrollView *CreateFeatureSpaceWindow(const char *name, int xpos, int ypos);
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231 #endif // !GRAPHICS_DISABLED
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232
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233 } // namespace tesseract
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234
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235 #endif