tesseract::LTRResultIterator Class Reference

#include <ltrresultiterator.h>

Inheritance diagram for tesseract::LTRResultIterator:

Public Member Functions
	LTRResultIterator (PAGE_RES *page_res, Tesseract *tesseract, int scale, int scaled_yres, int rect_left, int rect_top, int rect_width, int rect_height)
virtual	~LTRResultIterator ()
char *	GetUTF8Text (PageIteratorLevel level) const
void	SetLineSeparator (const char *new_line)
void	SetParagraphSeparator (const char *new_para)
float	Confidence (PageIteratorLevel level) const
void	RowAttributes (float *row_height, float *descenders, float *ascenders) const
const char *	WordFontAttributes (bool *is_bold, bool *is_italic, bool *is_underlined, bool *is_monospace, bool *is_serif, bool *is_smallcaps, int *pointsize, int *font_id) const
const char *	WordRecognitionLanguage () const
StrongScriptDirection	WordDirection () const
bool	WordIsFromDictionary () const
int	BlanksBeforeWord () const
bool	WordIsNumeric () const
bool	HasBlamerInfo () const
const void *	GetParamsTrainingBundle () const
const char *	GetBlamerDebug () const
const char *	GetBlamerMisadaptionDebug () const
bool	HasTruthString () const
bool	EquivalentToTruth (const char *str) const
char *	WordTruthUTF8Text () const
char *	WordNormedUTF8Text () const
const char *	WordLattice (int *lattice_size) const
bool	SymbolIsSuperscript () const
bool	SymbolIsSubscript () const
bool	SymbolIsDropcap () const
Public Member Functions inherited from tesseract::PageIterator
	PageIterator (PAGE_RES *page_res, Tesseract *tesseract, int scale, int scaled_yres, int rect_left, int rect_top, int rect_width, int rect_height)
virtual	~PageIterator ()
	PageIterator (const PageIterator &src)
const PageIterator &	operator= (const PageIterator &src)
bool	PositionedAtSameWord (const PAGE_RES_IT *other) const
virtual void	Begin ()
virtual void	RestartParagraph ()
bool	IsWithinFirstTextlineOfParagraph () const
virtual void	RestartRow ()
virtual bool	Next (PageIteratorLevel level)
virtual bool	IsAtBeginningOf (PageIteratorLevel level) const
virtual bool	IsAtFinalElement (PageIteratorLevel level, PageIteratorLevel element) const
int	Cmp (const PageIterator &other) const
void	SetBoundingBoxComponents (bool include_upper_dots, bool include_lower_dots)
bool	BoundingBox (PageIteratorLevel level, int *left, int *top, int *right, int *bottom) const
bool	BoundingBox (PageIteratorLevel level, const int padding, int *left, int *top, int *right, int *bottom) const
bool	BoundingBoxInternal (PageIteratorLevel level, int *left, int *top, int *right, int *bottom) const
bool	Empty (PageIteratorLevel level) const
PolyBlockType	BlockType () const
Pta *	BlockPolygon () const
Pix *	GetBinaryImage (PageIteratorLevel level) const
Pix *	GetImage (PageIteratorLevel level, int padding, Pix *original_img, int *left, int *top) const
bool	Baseline (PageIteratorLevel level, int *x1, int *y1, int *x2, int *y2) const
void	Orientation (tesseract::Orientation *orientation, tesseract::WritingDirection *writing_direction, tesseract::TextlineOrder *textline_order, float *deskew_angle) const
void	ParagraphInfo (tesseract::ParagraphJustification *justification, bool *is_list_item, bool *is_crown, int *first_line_indent) const
bool	SetWordBlamerBundle (BlamerBundle *blamer_bundle)

Protected Attributes
const char *	line_separator_
const char *	paragraph_separator_
Protected Attributes inherited from tesseract::PageIterator
PAGE_RES *	page_res_
Tesseract *	tesseract_
PAGE_RES_IT *	it_
WERD *	word_
int	word_length_
int	blob_index_
C_BLOB_IT *	cblob_it_
bool	include_upper_dots_
bool	include_lower_dots_
int	scale_
int	scaled_yres_
int	rect_left_
int	rect_top_
int	rect_width_
int	rect_height_

Friends
class	ChoiceIterator

Additional Inherited Members
Protected Member Functions inherited from tesseract::PageIterator
TESS_LOCAL void	BeginWord (int offset)

Detailed Description

Definition at line 46 of file ltrresultiterator.h.

Constructor & Destructor Documentation

LTRResultIterator()

tesseract::LTRResultIterator::LTRResultIterator	(	PAGE_RES *	page_res,
		Tesseract *	tesseract,
		int	scale,
		int	scaled_yres,
		int	rect_left,
		int	rect_top,
		int	rect_width,
		int	rect_height
	)

Definition at line 30 of file ltrresultiterator.cpp.

  : PageIterator(page_res, tesseract, scale, scaled_yres,
                 rect_left, rect_top, rect_width, rect_height),
    line_separator_("\n"),
    paragraph_separator_("\n") {
}

~LTRResultIterator()

tesseract::LTRResultIterator::~LTRResultIterator ( )

virtual

Definition at line 40 of file ltrresultiterator.cpp.

                                      {
}

Member Function Documentation

BlanksBeforeWord()

int tesseract::LTRResultIterator::BlanksBeforeWord

(

)

const

Definition at line 224 of file ltrresultiterator.cpp.

                                              {
  if (it_->word() == NULL) return 1;
  return it_->word()->word->space();
}

Confidence()

float tesseract::LTRResultIterator::Confidence

(

PageIteratorLevel

level

)

const

Definition at line 94 of file ltrresultiterator.cpp.

                                                                 {
  if (it_->word() == NULL) return 0.0f;  // Already at the end!
  float mean_certainty = 0.0f;
  int certainty_count = 0;
  PAGE_RES_IT res_it(*it_);
  WERD_CHOICE* best_choice = res_it.word()->best_choice;
  ASSERT_HOST(best_choice != NULL);
  switch (level) {
    case RIL_BLOCK:
      do {
        best_choice = res_it.word()->best_choice;
        ASSERT_HOST(best_choice != NULL);
        mean_certainty += best_choice->certainty();
        ++certainty_count;
        res_it.forward();
      } while (res_it.block() == res_it.prev_block());
      break;
    case RIL_PARA:
      do {
        best_choice = res_it.word()->best_choice;
        ASSERT_HOST(best_choice != NULL);
        mean_certainty += best_choice->certainty();
        ++certainty_count;
        res_it.forward();
      } while (res_it.block() == res_it.prev_block() &&
               res_it.row()->row->para() == res_it.prev_row()->row->para());
      break;
    case RIL_TEXTLINE:
      do {
        best_choice = res_it.word()->best_choice;
        ASSERT_HOST(best_choice != NULL);
        mean_certainty += best_choice->certainty();
        ++certainty_count;
        res_it.forward();
      } while (res_it.row() == res_it.prev_row());
      break;
    case RIL_WORD:
      mean_certainty += best_choice->certainty();
     ++certainty_count;
      break;
    case RIL_SYMBOL:
      mean_certainty += best_choice->certainty(blob_index_);
      ++certainty_count;
  }
  if (certainty_count > 0) {
    mean_certainty /= certainty_count;
    float confidence = 100 + 5 * mean_certainty;
    if (confidence < 0.0f) confidence = 0.0f;
    if (confidence > 100.0f) confidence = 100.0f;
    return confidence;
  }
  return 0.0f;
}

EquivalentToTruth()

bool tesseract::LTRResultIterator::EquivalentToTruth

(

const char *

str

)

const

Definition at line 273 of file ltrresultiterator.cpp.

                                                               {
  if (!HasTruthString()) return false;
  ASSERT_HOST(it_->word()->uch_set != NULL);
  WERD_CHOICE str_wd(str, *(it_->word()->uch_set));
  return it_->word()->blamer_bundle->ChoiceIsCorrect(&str_wd);
}

GetBlamerDebug()

const char * tesseract::LTRResultIterator::GetBlamerDebug

(

)

const

Definition at line 251 of file ltrresultiterator.cpp.

                                                    {
  return it_->word()->blamer_bundle->debug().string();
}

GetBlamerMisadaptionDebug()

const char * tesseract::LTRResultIterator::GetBlamerMisadaptionDebug

(

)

const

Definition at line 257 of file ltrresultiterator.cpp.

                                                               {
  return it_->word()->blamer_bundle->misadaption_debug().string();
}

GetParamsTrainingBundle()

const void * tesseract::LTRResultIterator::GetParamsTrainingBundle

(

)

const

Definition at line 244 of file ltrresultiterator.cpp.

                                                             {
  return (it_->word() != NULL && it_->word()->blamer_bundle != NULL) ?
      &(it_->word()->blamer_bundle->params_training_bundle()) : NULL;
}

GetUTF8Text()

char * tesseract::LTRResultIterator::GetUTF8Text

(

PageIteratorLevel

level

)

const

Definition at line 45 of file ltrresultiterator.cpp.

                                                                  {
  if (it_->word() == NULL) return NULL;  // Already at the end!
  STRING text;
  PAGE_RES_IT res_it(*it_);
  WERD_CHOICE* best_choice = res_it.word()->best_choice;
  ASSERT_HOST(best_choice != NULL);
  if (level == RIL_SYMBOL) {
    text = res_it.word()->BestUTF8(blob_index_, false);
  } else if (level == RIL_WORD) {
    text = best_choice->unichar_string();
  } else {
    bool eol = false;  // end of line?
    bool eop = false;  // end of paragraph?
    do {  // for each paragraph in a block
      do {  // for each text line in a paragraph
        do {  // for each word in a text line
          best_choice = res_it.word()->best_choice;
          ASSERT_HOST(best_choice != NULL);
          text += best_choice->unichar_string();
          text += " ";
          res_it.forward();
          eol = res_it.row() != res_it.prev_row();
        } while (!eol);
        text.truncate_at(text.length() - 1);
        text += line_separator_;
        eop = res_it.block() != res_it.prev_block() ||
            res_it.row()->row->para() != res_it.prev_row()->row->para();
      } while (level != RIL_TEXTLINE && !eop);
      if (eop) text += paragraph_separator_;
    } while (level == RIL_BLOCK && res_it.block() == res_it.prev_block());
  }
  int length = text.length() + 1;
  char* result = new char[length];
  strncpy(result, text.string(), length);
  return result;
}

HasBlamerInfo()

bool tesseract::LTRResultIterator::HasBlamerInfo

(

)

const

Definition at line 237 of file ltrresultiterator.cpp.

                                            {
  return it_->word() != NULL && it_->word()->blamer_bundle != NULL &&
         it_->word()->blamer_bundle->HasDebugInfo();
}

HasTruthString()

bool tesseract::LTRResultIterator::HasTruthString

(

)

const

Definition at line 262 of file ltrresultiterator.cpp.

                                             {
  if (it_->word() == NULL) return false;  // Already at the end!
  if (it_->word()->blamer_bundle == NULL ||
      it_->word()->blamer_bundle->NoTruth()) {
    return false;  // no truth information for this word
  }
  return true;
}

RowAttributes()

void tesseract::LTRResultIterator::RowAttributes	(	float *	row_height,
		float *	descenders,
		float *	ascenders
	)		const

Definition at line 148 of file ltrresultiterator.cpp.

                                                              {
  *row_height = it_->row()->row->x_height() + it_->row()->row->ascenders() -
                it_->row()->row->descenders();
  *descenders = it_->row()->row->descenders();
  *ascenders = it_->row()->row->ascenders();
}

SetLineSeparator()

void tesseract::LTRResultIterator::SetLineSeparator

(

const char *

new_line

)

Definition at line 83 of file ltrresultiterator.cpp.

                                                             {
  line_separator_ = new_line;
}

SetParagraphSeparator()

void tesseract::LTRResultIterator::SetParagraphSeparator

(

const char *

new_para

)

Definition at line 88 of file ltrresultiterator.cpp.

                                                                  {
  paragraph_separator_ = new_para;
}

SymbolIsDropcap()

bool tesseract::LTRResultIterator::SymbolIsDropcap

(

)

const

Definition at line 339 of file ltrresultiterator.cpp.

                                              {
  if (cblob_it_ == NULL && it_->word() != NULL)
    return it_->word()->best_choice->BlobPosition(blob_index_) == SP_DROPCAP;
  return false;
}

SymbolIsSubscript()

bool tesseract::LTRResultIterator::SymbolIsSubscript

(

)

const

Definition at line 330 of file ltrresultiterator.cpp.

                                                {
  if (cblob_it_ == NULL && it_->word() != NULL)
    return it_->word()->best_choice->BlobPosition(blob_index_) == SP_SUBSCRIPT;
  return false;
}

SymbolIsSuperscript()

bool tesseract::LTRResultIterator::SymbolIsSuperscript

(

)

const

Definition at line 320 of file ltrresultiterator.cpp.

                                                  {
  if (cblob_it_ == NULL && it_->word() != NULL)
    return it_->word()->best_choice->BlobPosition(blob_index_) ==
        SP_SUPERSCRIPT;
  return false;
}

WordDirection()

StrongScriptDirection tesseract::LTRResultIterator::WordDirection

(

)

const

Definition at line 202 of file ltrresultiterator.cpp.

                                                             {
  if (it_->word() == NULL) return DIR_NEUTRAL;
  bool has_rtl = it_->word()->AnyRtlCharsInWord();
  bool has_ltr = it_->word()->AnyLtrCharsInWord();
  if (has_rtl && !has_ltr)
    return DIR_RIGHT_TO_LEFT;
  if (has_ltr && !has_rtl)
    return DIR_LEFT_TO_RIGHT;
  if (!has_ltr && !has_rtl)
    return DIR_NEUTRAL;
  return DIR_MIX;
}

WordFontAttributes()

const char * tesseract::LTRResultIterator::WordFontAttributes	(	bool *	is_bold,
		bool *	is_italic,
		bool *	is_underlined,
		bool *	is_monospace,
		bool *	is_serif,
		bool *	is_smallcaps,
		int *	pointsize,
		int *	font_id
	)		const

Definition at line 164 of file ltrresultiterator.cpp.

                                                                      {
  if (it_->word() == NULL) return NULL;  // Already at the end!
  if (it_->word()->fontinfo == NULL) {
    *font_id = -1;
    return NULL;  // No font information.
  }
  const FontInfo& font_info = *it_->word()->fontinfo;
  *font_id = font_info.universal_id;
  *is_bold = font_info.is_bold();
  *is_italic = font_info.is_italic();
  *is_underlined = false;  // TODO(rays) fix this!
  *is_monospace = font_info.is_fixed_pitch();
  *is_serif = font_info.is_serif();
  *is_smallcaps = it_->word()->small_caps;
  float row_height = it_->row()->row->x_height() +
      it_->row()->row->ascenders() - it_->row()->row->descenders();
  // Convert from pixels to printers points.
  *pointsize = scaled_yres_ > 0
      ? static_cast<int>(row_height * kPointsPerInch / scaled_yres_ + 0.5)
      : 0;

  return font_info.name;
}

WordIsFromDictionary()

bool tesseract::LTRResultIterator::WordIsFromDictionary

(

)

const

Definition at line 216 of file ltrresultiterator.cpp.

                                                   {
  if (it_->word() == NULL) return false;  // Already at the end!
  int permuter = it_->word()->best_choice->permuter();
  return permuter == SYSTEM_DAWG_PERM || permuter == FREQ_DAWG_PERM ||
         permuter == USER_DAWG_PERM;
}

WordIsNumeric()

bool tesseract::LTRResultIterator::WordIsNumeric

(

)

const

Definition at line 230 of file ltrresultiterator.cpp.

                                            {
  if (it_->word() == NULL) return false;  // Already at the end!
  int permuter = it_->word()->best_choice->permuter();
  return permuter == NUMBER_PERM;
}

WordLattice()

const char * tesseract::LTRResultIterator::WordLattice

(

int *

lattice_size

)

const

Definition at line 310 of file ltrresultiterator.cpp.

                                                                  {
  if (it_->word() == NULL) return NULL;  // Already at the end!
  if (it_->word()->blamer_bundle == NULL) return NULL;
  *lattice_size = it_->word()->blamer_bundle->lattice_size();
  return it_->word()->blamer_bundle->lattice_data();
}

WordNormedUTF8Text()

char * tesseract::LTRResultIterator::WordNormedUTF8Text

(

)

const

Definition at line 293 of file ltrresultiterator.cpp.

                                                  {
  if (it_->word() == NULL) return NULL;  // Already at the end!
  STRING ocr_text;
  WERD_CHOICE* best_choice = it_->word()->best_choice;
  const UNICHARSET *unicharset = it_->word()->uch_set;
  ASSERT_HOST(best_choice != NULL);
  for (int i = 0; i < best_choice->length(); ++i) {
    ocr_text += unicharset->get_normed_unichar(best_choice->unichar_id(i));
  }
  int length = ocr_text.length() + 1;
  char* result = new char[length];
  strncpy(result, ocr_text.string(), length);
  return result;
}

WordRecognitionLanguage()

const char * tesseract::LTRResultIterator::WordRecognitionLanguage

(

)

const

Definition at line 196 of file ltrresultiterator.cpp.

                                                             {
  if (it_->word() == NULL || it_->word()->tesseract == NULL) return NULL;
  return it_->word()->tesseract->lang.string();
}

WordTruthUTF8Text()

char * tesseract::LTRResultIterator::WordTruthUTF8Text

(

)

const

Definition at line 282 of file ltrresultiterator.cpp.

                                                 {
  if (!HasTruthString()) return NULL;
  STRING truth_text = it_->word()->blamer_bundle->TruthString();
  int length = truth_text.length() + 1;
  char* result = new char[length];
  strncpy(result, truth_text.string(), length);
  return result;
}

Friends And Related Function Documentation

ChoiceIterator

friend class ChoiceIterator

friend

Definition at line 47 of file ltrresultiterator.h.

Member Data Documentation

line_separator_

const char* tesseract::LTRResultIterator::line_separator_

protected

Definition at line 183 of file ltrresultiterator.h.

paragraph_separator_

const char* tesseract::LTRResultIterator::paragraph_separator_

protected

Definition at line 184 of file ltrresultiterator.h.

---

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

• /home/stefan/src/github/tesseract-ocr/tesseract/ccmain/ltrresultiterator.h
• /home/stefan/src/github/tesseract-ocr/tesseract/ccmain/ltrresultiterator.cpp