tesseract::IntFeatureMap Class Reference

#include <intfeaturemap.h>

Public Member Functions
	IntFeatureMap ()
	~IntFeatureMap ()
int	sparse_size () const
int	compact_size () const
const IntFeatureSpace &	feature_space () const
const IndexMapBiDi &	feature_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, std::vector< int > *sorted_features) const
int	MapIndexedFeatures (const std::vector< int > &index_features, std::vector< int > *map_features) const
void	DebugMapFeatures (const std::vector< int > &map_features) const

Detailed Description

Definition at line 48 of file intfeaturemap.h.

Constructor & Destructor Documentation

IntFeatureMap()

tesseract::IntFeatureMap::IntFeatureMap

(

)

Definition at line 33 of file intfeaturemap.cpp.

                             : mapping_changed_(true), compact_size_(0) {
  for (int dir = 0; dir < kNumOffsetMaps; ++dir) {
    offset_plus_[dir] = nullptr;
    offset_minus_[dir] = nullptr;
  }
}

~IntFeatureMap()

tesseract::IntFeatureMap::~IntFeatureMap

(

)

Definition at line 40 of file intfeaturemap.cpp.

                              {
  Clear();
}

Member Function Documentation

compact_size()

int tesseract::IntFeatureMap::compact_size ( ) const

inline

Definition at line 57 of file intfeaturemap.h.

                           {
    return compact_size_;
  }

DebugMapFeatures()

void tesseract::IntFeatureMap::DebugMapFeatures

(

const std::vector< int > &

map_features

)

const

Definition at line 168 of file intfeaturemap.cpp.

                                                                             {
  for (int map_feature : map_features) {
    INT_FEATURE_STRUCT f = InverseMapFeature(map_feature);
    f.print();
  }
}

DeleteMapFeature()

void tesseract::IntFeatureMap::DeleteMapFeature

(

int

map_feature

)

Definition at line 61 of file intfeaturemap.cpp.

                                                    {
  feature_map_.Merge(-1, map_feature);
  mapping_changed_ = true;
}

feature_map()

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

inline

Definition at line 63 of file intfeaturemap.h.

                                          {
    return feature_map_;
  }

feature_space()

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

inline

Definition at line 60 of file intfeaturemap.h.

                                               {
    return feature_space_;
  }

FinalizeMapping()

int tesseract::IntFeatureMap::FinalizeMapping

(

SampleIterator *

it

)

Definition at line 155 of file intfeaturemap.cpp.

                                                     {
  if (mapping_changed_) {
    feature_map_.CompleteMerges();
    compact_size_ = feature_map_.CompactSize();
#ifdef EXPERIMENT_ON
    it->MapSampleFeatures(*this);
#endif
    mapping_changed_ = false;
  }
  return compact_size_;
}

FindNZFeatureMapping()

int tesseract::IntFeatureMap::FindNZFeatureMapping

(

SampleIterator *

it

)

IndexAndSortFeatures()

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

inline

Definition at line 104 of file intfeaturemap.h.

                                                                   {
    feature_space_.IndexAndSortFeatures(features, num_features, sorted_features);
  }

IndexFeature()

int tesseract::IntFeatureMap::IndexFeature

(

const INT_FEATURE_STRUCT &

f

)

const

Definition at line 45 of file intfeaturemap.cpp.

                                                                 {
  return feature_space_.Index(f);
}

Init()

void tesseract::IntFeatureMap::Init

(

const IntFeatureSpace &

feature_space

)

Definition at line 71 of file intfeaturemap.cpp.

                                                             {
  feature_space_ = feature_space;
  mapping_changed_ = false;
  int sparse_size = feature_space_.Size();
  feature_map_.Init(sparse_size, true);
  feature_map_.Setup();
  compact_size_ = feature_map_.CompactSize();
  // Initialize look-up tables if needed.
  FCOORD dir = FeatureDirection(0);
  if (dir.x() == 0.0f && dir.y() == 0.0f) {
    InitIntegerFX();
  }
  // Compute look-up tables to generate offset features.
  for (int dir = 0; dir < kNumOffsetMaps; ++dir) {
    delete[] offset_plus_[dir];
    delete[] offset_minus_[dir];
    offset_plus_[dir] = new int[sparse_size];
    offset_minus_[dir] = new int[sparse_size];
  }
  for (int dir = 1; dir <= kNumOffsetMaps; ++dir) {
    for (int i = 0; i < sparse_size; ++i) {
      int offset_index = ComputeOffsetFeature(i, dir);
      offset_plus_[dir - 1][i] = offset_index;
      offset_index = ComputeOffsetFeature(i, -dir);
      offset_minus_[dir - 1][i] = offset_index;
    }
  }
}

InverseIndexFeature()

INT_FEATURE_STRUCT tesseract::IntFeatureMap::InverseIndexFeature

(

int

index_feature

)

const

Definition at line 54 of file intfeaturemap.cpp.

                                                                             {
  return feature_space_.PositionFromIndex(index_feature);
}

InverseMapFeature()

INT_FEATURE_STRUCT tesseract::IntFeatureMap::InverseMapFeature

(

int

map_feature

)

const

Definition at line 57 of file intfeaturemap.cpp.

                                                                         {
  int index = feature_map_.CompactToSparse(map_feature);
  return feature_space_.PositionFromIndex(index);
}

IsMapFeatureDeleted()

bool tesseract::IntFeatureMap::IsMapFeatureDeleted

(

int

map_feature

)

const

Definition at line 65 of file intfeaturemap.cpp.

                                                             {
  return feature_map_.IsCompactDeleted(map_feature);
}

MapFeature()

int tesseract::IntFeatureMap::MapFeature

(

const INT_FEATURE_STRUCT &

f

)

const

Definition at line 48 of file intfeaturemap.cpp.

                                                               {
  return feature_map_.SparseToCompact(feature_space_.Index(f));
}

MapIndexedFeatures()

int tesseract::IntFeatureMap::MapIndexedFeatures ( const std::vector< int > &  index_features, std::vector< int > *  map_features  ) const

inline

Definition at line 113 of file intfeaturemap.h.

                                                             {
    return feature_map_.MapFeatures(index_features, map_features);
  }

MapIndexFeature()

int tesseract::IntFeatureMap::MapIndexFeature

(

int

index_feature

)

const

Definition at line 51 of file intfeaturemap.cpp.

                                                          {
  return feature_map_.SparseToCompact(index_feature);
}

OffsetFeature()

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

Definition at line 112 of file intfeaturemap.cpp.

                                                                 {
  if (dir > 0 && dir <= kNumOffsetMaps) {
    return offset_plus_[dir - 1][index_feature];
  } else if (dir < 0 && -dir <= kNumOffsetMaps) {
    return offset_minus_[-dir - 1][index_feature];
  } else if (dir == 0) {
    return index_feature;
  } else {
    return -1;
  }
}

sparse_size()

int tesseract::IntFeatureMap::sparse_size ( ) const

inline

Definition at line 54 of file intfeaturemap.h.

                          {
    return feature_space_.Size();
  }

---

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

• /media/home/debian/src/github/tesseract-ocr/tesseract/src/training/common/intfeaturemap.h
• /media/home/debian/src/github/tesseract-ocr/tesseract/src/training/common/intfeaturemap.cpp