tesseract 4.1.1
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tesseract::IntFeatureMap Class Reference

#include <intfeaturemap.h>

Public Member Functions

 IntFeatureMap ()
 
 ~IntFeatureMap ()
 
int sparse_size () const
 
int compact_size () const
 
const IntFeatureSpacefeature_space () const
 
const IndexMapBiDifeature_map () const
 
int IndexFeature (const INT_FEATURE_STRUCT &f) const
 
int MapFeature (const INT_FEATURE_STRUCT &f) const
 
int MapIndexFeature (int index_feature) const
 
INT_FEATURE_STRUCT InverseIndexFeature (int index_feature) const
 
INT_FEATURE_STRUCT InverseMapFeature (int map_feature) const
 
void DeleteMapFeature (int map_feature)
 
bool IsMapFeatureDeleted (int map_feature) const
 
void Init (const IntFeatureSpace &feature_space)
 
int OffsetFeature (int index_feature, int dir) const
 
int FindNZFeatureMapping (SampleIterator *it)
 
int FinalizeMapping (SampleIterator *it)
 
void IndexAndSortFeatures (const INT_FEATURE_STRUCT *features, int num_features, GenericVector< int > *sorted_features) const
 
int MapIndexedFeatures (const GenericVector< int > &index_features, GenericVector< int > *map_features) const
 
void DebugMapFeatures (const GenericVector< int > &map_features) const
 

Detailed Description

Definition at line 48 of file intfeaturemap.h.

Constructor & Destructor Documentation

◆ IntFeatureMap()

tesseract::IntFeatureMap::IntFeatureMap ( )

Definition at line 34 of file intfeaturemap.cpp.

35 : mapping_changed_(true), compact_size_(0) {
36 for (int dir = 0; dir < kNumOffsetMaps; ++dir) {
37 offset_plus_[dir] = nullptr;
38 offset_minus_[dir] = nullptr;
39 }
40}

◆ ~IntFeatureMap()

tesseract::IntFeatureMap::~IntFeatureMap ( )

Definition at line 42 of file intfeaturemap.cpp.

42 {
43 Clear();
44}

Member Function Documentation

◆ compact_size()

int tesseract::IntFeatureMap::compact_size ( ) const
inline

Definition at line 57 of file intfeaturemap.h.

57 {
58 return compact_size_;
59 }

◆ DebugMapFeatures()

void tesseract::IntFeatureMap::DebugMapFeatures ( const GenericVector< int > &  map_features) const

Definition at line 172 of file intfeaturemap.cpp.

173 {
174 for (int i = 0; i < map_features.size(); ++i) {
175 INT_FEATURE_STRUCT f = InverseMapFeature(map_features[i]);
176 f.print();
177 }
178}
int size() const
Definition: genericvector.h:72
INT_FEATURE_STRUCT InverseMapFeature(int map_feature) const
void print() const
Definition: intproto.h:145

◆ DeleteMapFeature()

void tesseract::IntFeatureMap::DeleteMapFeature ( int  map_feature)

Definition at line 63 of file intfeaturemap.cpp.

63 {
64 feature_map_.Merge(-1, map_feature);
65 mapping_changed_ = true;
66}
bool Merge(int compact_index1, int compact_index2)

◆ feature_map()

const IndexMapBiDi & tesseract::IntFeatureMap::feature_map ( ) const
inline

Definition at line 63 of file intfeaturemap.h.

63 {
64 return feature_map_;
65 }

◆ feature_space()

const IntFeatureSpace & tesseract::IntFeatureMap::feature_space ( ) const
inline

Definition at line 60 of file intfeaturemap.h.

60 {
61 return feature_space_;
62 }

◆ FinalizeMapping()

int tesseract::IntFeatureMap::FinalizeMapping ( SampleIterator it)

Definition at line 159 of file intfeaturemap.cpp.

159 {
160 if (mapping_changed_) {
161 feature_map_.CompleteMerges();
162 compact_size_ = feature_map_.CompactSize();
163#ifdef EXPERIMENT_ON
164 it->MapSampleFeatures(*this);
165#endif
166 mapping_changed_ = false;
167 }
168 return compact_size_;
169}
int CompactSize() const
Definition: indexmapbidi.h:61

◆ FindNZFeatureMapping()

int tesseract::IntFeatureMap::FindNZFeatureMapping ( SampleIterator it)

◆ IndexAndSortFeatures()

void tesseract::IntFeatureMap::IndexAndSortFeatures ( const INT_FEATURE_STRUCT features,
int  num_features,
GenericVector< int > *  sorted_features 
) const
inline

Definition at line 104 of file intfeaturemap.h.

106 {
107 feature_space_.IndexAndSortFeatures(features, num_features,
108 sorted_features);
109 }
void IndexAndSortFeatures(const INT_FEATURE_STRUCT *features, int num_features, GenericVector< int > *sorted_features) const

◆ IndexFeature()

int tesseract::IntFeatureMap::IndexFeature ( const INT_FEATURE_STRUCT f) const

Definition at line 47 of file intfeaturemap.cpp.

47 {
48 return feature_space_.Index(f);
49}
int Index(const INT_FEATURE_STRUCT &f) const

◆ Init()

void tesseract::IntFeatureMap::Init ( const IntFeatureSpace feature_space)

Definition at line 73 of file intfeaturemap.cpp.

73 {
74 feature_space_ = feature_space;
75 mapping_changed_ = false;
76 int sparse_size = feature_space_.Size();
77 feature_map_.Init(sparse_size, true);
78 feature_map_.Setup();
79 compact_size_ = feature_map_.CompactSize();
80 // Initialize look-up tables if needed.
81 FCOORD dir = FeatureDirection(0);
82 if (dir.x() == 0.0f && dir.y() == 0.0f)
84 // Compute look-up tables to generate offset features.
85 for (int dir = 0; dir < kNumOffsetMaps; ++dir) {
86 delete [] offset_plus_[dir];
87 delete [] offset_minus_[dir];
88 offset_plus_[dir] = new int[sparse_size];
89 offset_minus_[dir] = new int[sparse_size];
90 }
91 for (int dir = 1; dir <= kNumOffsetMaps; ++dir) {
92 for (int i = 0; i < sparse_size; ++i) {
93 int offset_index = ComputeOffsetFeature(i, dir);
94 offset_plus_[dir - 1][i] = offset_index;
95 offset_index = ComputeOffsetFeature(i, -dir);
96 offset_minus_[dir - 1][i] = offset_index;
97 }
98 }
99}
void InitIntegerFX()
Definition: intfx.cpp:49
FCOORD FeatureDirection(uint8_t theta)
Definition: intfx.cpp:66
Definition: points.h:189
float y() const
Definition: points.h:210
float x() const
Definition: points.h:207
void Init(int size, bool all_mapped)
const IntFeatureSpace & feature_space() const
Definition: intfeaturemap.h:60

◆ InverseIndexFeature()

INT_FEATURE_STRUCT tesseract::IntFeatureMap::InverseIndexFeature ( int  index_feature) const

Definition at line 56 of file intfeaturemap.cpp.

56 {
57 return feature_space_.PositionFromIndex(index_feature);
58}
INT_FEATURE_STRUCT PositionFromIndex(int index) const

◆ InverseMapFeature()

INT_FEATURE_STRUCT tesseract::IntFeatureMap::InverseMapFeature ( int  map_feature) const

Definition at line 59 of file intfeaturemap.cpp.

59 {
60 int index = feature_map_.CompactToSparse(map_feature);
61 return feature_space_.PositionFromIndex(index);
62}
int CompactToSparse(int compact_index) const
Definition: indexmapbidi.h:53

◆ IsMapFeatureDeleted()

bool tesseract::IntFeatureMap::IsMapFeatureDeleted ( int  map_feature) const

Definition at line 67 of file intfeaturemap.cpp.

67 {
68 return feature_map_.IsCompactDeleted(map_feature);
69}
bool IsCompactDeleted(int index) const
Definition: indexmapbidi.h:130

◆ MapFeature()

int tesseract::IntFeatureMap::MapFeature ( const INT_FEATURE_STRUCT f) const

Definition at line 50 of file intfeaturemap.cpp.

50 {
51 return feature_map_.SparseToCompact(feature_space_.Index(f));
52}
int SparseToCompact(int sparse_index) const override
Definition: indexmapbidi.h:138

◆ MapIndexedFeatures()

int tesseract::IntFeatureMap::MapIndexedFeatures ( const GenericVector< int > &  index_features,
GenericVector< int > *  map_features 
) const
inline

Definition at line 115 of file intfeaturemap.h.

116 {
117 return feature_map_.MapFeatures(index_features, map_features);
118 }
int MapFeatures(const GenericVector< int > &sparse, GenericVector< int > *compact) const

◆ MapIndexFeature()

int tesseract::IntFeatureMap::MapIndexFeature ( int  index_feature) const

Definition at line 53 of file intfeaturemap.cpp.

53 {
54 return feature_map_.SparseToCompact(index_feature);
55}

◆ OffsetFeature()

int tesseract::IntFeatureMap::OffsetFeature ( int  index_feature,
int  dir 
) const

Definition at line 113 of file intfeaturemap.cpp.

113 {
114 if (dir > 0 && dir <= kNumOffsetMaps)
115 return offset_plus_[dir - 1][index_feature];
116 else if (dir < 0 && -dir <= kNumOffsetMaps)
117 return offset_minus_[-dir - 1][index_feature];
118 else if (dir == 0)
119 return index_feature;
120 else
121 return -1;
122}

◆ sparse_size()

int tesseract::IntFeatureMap::sparse_size ( ) const
inline

Definition at line 54 of file intfeaturemap.h.

54 {
55 return feature_space_.Size();
56 }

The documentation for this class was generated from the following files: