#include <ratngs.h>

Inheritance diagram for WERD_CHOICE:

Public Member Functions
	WERD_CHOICE (const UNICHARSET *unicharset)

	WERD_CHOICE (const UNICHARSET *unicharset, int reserved)

	WERD_CHOICE (const char src_string, const char src_lengths, float src_rating, float src_certainty, uint8_t src_permuter, const UNICHARSET &unicharset)

	WERD_CHOICE (const char *src_string, const UNICHARSET &unicharset)

	WERD_CHOICE (const WERD_CHOICE &word)

	~WERD_CHOICE ()

const UNICHARSET *	unicharset () const

int	length () const

float	adjust_factor () const

void	set_adjust_factor (float factor)

const UNICHAR_ID *	unichar_ids () const

UNICHAR_ID	unichar_id (int index) const

int	state (int index) const

tesseract::ScriptPos	BlobPosition (int index) const

float	rating () const

float	certainty () const

float	certainty (int index) const

float	min_x_height () const

float	max_x_height () const

void	set_x_heights (float min_height, float max_height)

uint8_t	permuter () const

const char *	permuter_name () const

BLOB_CHOICE_LIST *	blob_choices (int index, MATRIX *ratings) const

MATRIX_COORD	MatrixCoord (int index) const

void	set_unichar_id (UNICHAR_ID unichar_id, int index)

bool	dangerous_ambig_found () const

void	set_dangerous_ambig_found_ (bool value)

void	set_rating (float new_val)

void	set_certainty (float new_val)

void	set_permuter (uint8_t perm)

void	set_length (int len)

void	double_the_size ()
	Make more space in unichar_id_ and fragment_lengths_ arrays. More...

void	init (int reserved)

void	init (const char src_string, const char src_lengths, float src_rating, float src_certainty, uint8_t src_permuter)

void	make_bad ()
	Set the fields in this choice to be default (bad) values. More...

void	append_unichar_id_space_allocated (UNICHAR_ID unichar_id, int blob_count, float rating, float certainty)

void	append_unichar_id (UNICHAR_ID unichar_id, int blob_count, float rating, float certainty)

void	set_unichar_id (UNICHAR_ID unichar_id, int blob_count, float rating, float certainty, int index)

void	set_blob_choice (int index, int blob_count, const BLOB_CHOICE *blob_choice)

bool	contains_unichar_id (UNICHAR_ID unichar_id) const

void	remove_unichar_ids (int index, int num)

void	remove_last_unichar_id ()

void	remove_unichar_id (int index)

bool	has_rtl_unichar_id () const

void	reverse_and_mirror_unichar_ids ()

void	punct_stripped (int start_core, int end_core) const

void	GetNonSuperscriptSpan (int start, int end) const

WERD_CHOICE	shallow_copy (int start, int end) const

void	string_and_lengths (STRING word_str, STRING word_lengths_str) const

const STRING	debug_string () const

bool	ContainsAnyNonSpaceDelimited () const

bool	IsAllSpaces () const

bool	set_unichars_in_script_order (bool in_script_order)

bool	unichars_in_script_order () const

const STRING &	unichar_string () const

const STRING &	unichar_lengths () const

void	SetScriptPositions (bool small_caps, TWERD *word, int debug=0)

void	SetScriptPositions (const tesseract::ScriptPos *positions, int length)

void	SetAllScriptPositions (tesseract::ScriptPos position)

int	GetTopScriptID () const

void	UpdateStateForSplit (int blob_position)

int	TotalOfStates () const

void	print () const

void	print (const char *msg) const

void	print_state (const char *msg) const

void	DisplaySegmentation (TWERD *word)

WERD_CHOICE &	operator+= (const WERD_CHOICE &second)

WERD_CHOICE &	operator= (const WERD_CHOICE &source)

Public Member Functions inherited from ELIST_LINK
	ELIST_LINK ()

	ELIST_LINK (const ELIST_LINK &)

void	operator= (const ELIST_LINK &)

Static Public Member Functions
static const char *	permuter_name (uint8_t permuter)

static tesseract::ScriptPos	ScriptPositionOf (bool print_debug, const UNICHARSET &unicharset, const TBOX &blob_box, UNICHAR_ID unichar_id)

Static Public Attributes
static const float	kBadRating = 100000.0

Detailed Description

Definition at line 273 of file ratngs.h.

Constructor & Destructor Documentation

WERD_CHOICE::WERD_CHOICE ( const UNICHARSET * unicharset )

inline

Definition at line 278 of file ratngs.h.

279 : unicharset_(unicharset) { this->init(8); }

WERD_CHOICE::init

void init(int reserved)

Definition: ratngs.h:409

WERD_CHOICE::WERD_CHOICE	(	const UNICHARSET *	unicharset,
		int	reserved
	)

inline

Definition at line 280 of file ratngs.h.

281 : unicharset_(unicharset) { this->init(reserved); }

WERD_CHOICE::init

void init(int reserved)

Definition: ratngs.h:409

WERD_CHOICE::WERD_CHOICE	(	const char *	src_string,
		const char *	src_lengths,
		float	src_rating,
		float	src_certainty,
		uint8_t	src_permuter,
		const UNICHARSET &	unicharset
	)

inline

Definition at line 282 of file ratngs.h.

     : unicharset_(&unicharset) {
     this->init(src_string, src_lengths, src_rating,
                src_certainty, src_permuter);
   }

WERD_CHOICE::WERD_CHOICE	(	const char *	src_string,
		const UNICHARSET &	unicharset
	)

WERD_CHOICE::WERD_CHOICE

Constructor to build a WERD_CHOICE from the given string. The function assumes that src_string is not nullptr.

Definition at line 218 of file ratngs.cpp.

     : unicharset_(&unicharset){
   GenericVector<UNICHAR_ID> encoding;
   GenericVector<char> lengths;
   std::string cleaned = unicharset.CleanupString(src_string);
   if (unicharset.encode_string(cleaned.c_str(), true, &encoding, &lengths,
                                nullptr)) {
     lengths.push_back('\0');
     STRING src_lengths = &lengths[0];
     this->init(cleaned.c_str(), src_lengths.string(), 0.0, 0.0, NO_PERM);
   } else {  // There must have been an invalid unichar in the string.
     this->init(8);
     this->make_bad();
   }
 }

WERD_CHOICE::WERD_CHOICE ( const WERD_CHOICE & word )

inline

Definition at line 293 of file ratngs.h.

       : ELIST_LINK(word), unicharset_(word.unicharset_) {
     this->init(word.length());
     this->operator=(word);
   }

WERD_CHOICE::~WERD_CHOICE ( )

WERD_CHOICE::~WERD_CHOICE

Definition at line 276 of file ratngs.cpp.

                           {
   delete[] unichar_ids_;
   delete[] script_pos_;
   delete[] state_;
   delete[] certainties_;
 }

Member Function Documentation

float WERD_CHOICE::adjust_factor ( ) const

inline

Definition at line 306 of file ratngs.h.

                               {
     return adjust_factor_;
   }

void WERD_CHOICE::append_unichar_id	(	UNICHAR_ID	unichar_id,
		int	blob_count,
		float	rating,
		float	certainty
	)

append_unichar_id

Make sure there is enough space in the word for the new unichar id and call append_unichar_id_space_allocated().

Definition at line 468 of file ratngs.cpp.

                                    {
   if (length_ == reserved_) {
     this->double_the_size();
   }
   this->append_unichar_id_space_allocated(unichar_id, blob_count,
                                           rating, certainty);
 }

void WERD_CHOICE::append_unichar_id_space_allocated	(	UNICHAR_ID	unichar_id,
		int	blob_count,
		float	rating,
		float	certainty
	)

inline

This function assumes that there is enough space reserved in the WERD_CHOICE for adding another unichar. This is an efficient alternative to append_unichar_id().

Definition at line 452 of file ratngs.h.

                                      {
     assert(reserved_ > length_);
     length_++;
     this->set_unichar_id(unichar_id, blob_count,
                          rating, certainty, length_-1);
   }

BLOB_CHOICE_LIST * WERD_CHOICE::blob_choices	(	int	index,
		MATRIX *	ratings
	)		const

Definition at line 290 of file ratngs.cpp.

                                                                             {
   MATRIX_COORD coord = MatrixCoord(index);
   BLOB_CHOICE_LIST* result = ratings->get(coord.col, coord.row);
   if (result == nullptr) {
     result = new BLOB_CHOICE_LIST;
     ratings->put(coord.col, coord.row, result);
   }
   return result;
 }

tesseract::ScriptPos WERD_CHOICE::BlobPosition ( int index ) const

inline

Definition at line 322 of file ratngs.h.

                                                    {
     if (index < 0 || index >= length_)
       return tesseract::SP_NORMAL;
     return script_pos_[index];
   }

float WERD_CHOICE::certainty ( ) const

inline

Definition at line 330 of file ratngs.h.

                                  {
     return certainty_;
   }

float WERD_CHOICE::certainty ( int index ) const

inline

Definition at line 333 of file ratngs.h.

                                           {
     return certainties_[index];
   }

bool WERD_CHOICE::contains_unichar_id ( UNICHAR_ID unichar_id ) const

contains_unichar_id

Returns true if unichar_ids_ contain the given unichar_id, false otherwise.

Definition at line 326 of file ratngs.cpp.

                                                                  {
   for (int i = 0; i < length_; ++i) {
     if (unichar_ids_[i] == unichar_id) {
       return true;
     }
   }
   return false;
 }

bool WERD_CHOICE::ContainsAnyNonSpaceDelimited ( ) const

inline

Definition at line 514 of file ratngs.h.

                                             {
     for (int i = 0; i < length_; ++i) {
       if (!unicharset_->IsSpaceDelimited(unichar_ids_[i])) return true;
     }
     return false;
   }

bool WERD_CHOICE::dangerous_ambig_found ( ) const

inline

Definition at line 363 of file ratngs.h.

                                      {
     return dangerous_ambig_found_;
   }

const STRING WERD_CHOICE::debug_string ( ) const

inline

Definition at line 505 of file ratngs.h.

                                     {
     STRING word_str;
     for (int i = 0; i < length_; ++i) {
       word_str += unicharset_->debug_str(unichar_ids_[i]);
       word_str += " ";
     }
     return word_str;
   }

void WERD_CHOICE::DisplaySegmentation ( TWERD * word )

Definition at line 761 of file ratngs.cpp.

                                                  {
 #ifndef GRAPHICS_DISABLED
   // Number of different colors to draw with.
   const int kNumColors = 6;
   static ScrollView *segm_window = nullptr;
   // Check the state against the static prev_drawn_state.
   static GenericVector<int> prev_drawn_state;
   bool already_done = prev_drawn_state.size() == length_;
   if (!already_done) prev_drawn_state.init_to_size(length_, 0);
   for (int i = 0; i < length_; ++i) {
     if (prev_drawn_state[i] != state_[i]) {
       already_done = false;
     }
     prev_drawn_state[i] = state_[i];
   }
   if (already_done || word->blobs.empty()) return;
 
   // Create the window if needed.
   if (segm_window == nullptr) {
     segm_window = new ScrollView("Segmentation", 5, 10, 500, 256,
                                  2000.0, 256.0, true);
   } else {
     segm_window->Clear();
   }
 
   TBOX bbox;
   int blob_index = 0;
   for (int c = 0; c < length_; ++c) {
     auto color =
         static_cast<ScrollView::Color>(c % kNumColors + 3);
     for (int i = 0; i < state_[c]; ++i, ++blob_index) {
       TBLOB* blob = word->blobs[blob_index];
       bbox += blob->bounding_box();
       blob->plot(segm_window, color, color);
     }
   }
   segm_window->ZoomToRectangle(bbox.left(), bbox.top(),
                                bbox.right(), bbox.bottom());
   segm_window->Update();
   window_wait(segm_window);
 #endif
 }

void WERD_CHOICE::double_the_size ( )

inline

Make more space in unichar_id_ and fragment_lengths_ arrays.

Definition at line 387 of file ratngs.h.

                                 {
     if (reserved_ > 0) {
       unichar_ids_ = GenericVector<UNICHAR_ID>::double_the_size_memcpy(
           reserved_, unichar_ids_);
       script_pos_ = GenericVector<tesseract::ScriptPos>::double_the_size_memcpy(
           reserved_, script_pos_);
       state_ = GenericVector<int>::double_the_size_memcpy(
           reserved_, state_);
       certainties_ = GenericVector<float>::double_the_size_memcpy(
           reserved_, certainties_);
       reserved_ *= 2;
     } else {
       unichar_ids_ = new UNICHAR_ID[1];
       script_pos_ = new tesseract::ScriptPos[1];
       state_ = new int[1];
       certainties_ = new float[1];
       reserved_ = 1;
     }
   }

void WERD_CHOICE::GetNonSuperscriptSpan	(	int *	start,
		int *	end
	)		const

Definition at line 397 of file ratngs.cpp.

                                                                     {
   int end = length();
   while (end > 0 &&
          unicharset_->get_isdigit(unichar_ids_[end - 1]) &&
          BlobPosition(end - 1) == tesseract::SP_SUPERSCRIPT) {
     end--;
   }
   int start = 0;
   while (start < end &&
          unicharset_->get_isdigit(unichar_ids_[start]) &&
          BlobPosition(start) == tesseract::SP_SUPERSCRIPT) {
     start++;
   }
   *pstart = start;
   *pend = end;
 }

int WERD_CHOICE::GetTopScriptID ( ) const

Definition at line 667 of file ratngs.cpp.

                                       {
   int max_script = unicharset_->get_script_table_size();
   int *sid = new int[max_script];
   int x;
   for (x = 0; x < max_script; x++) sid[x] = 0;
   for (x = 0; x < length_; ++x) {
     int script_id = unicharset_->get_script(unichar_id(x));
     sid[script_id]++;
   }
   if (unicharset_->han_sid() != unicharset_->null_sid()) {
     // Add the Hiragana & Katakana counts to Han and zero them out.
     if (unicharset_->hiragana_sid() != unicharset_->null_sid()) {
       sid[unicharset_->han_sid()] += sid[unicharset_->hiragana_sid()];
       sid[unicharset_->hiragana_sid()] = 0;
     }
     if (unicharset_->katakana_sid() != unicharset_->null_sid()) {
       sid[unicharset_->han_sid()] += sid[unicharset_->katakana_sid()];
       sid[unicharset_->katakana_sid()] = 0;
     }
   }
   // Note that high script ID overrides lower one on a tie, thus biasing
   // towards non-Common script (if sorted that way in unicharset file).
   int max_sid = 0;
   for (x = 1; x < max_script; x++)
     if (sid[x] >= sid[max_sid]) max_sid = x;
   if (sid[max_sid] < length_ / 2)
     max_sid = unicharset_->null_sid();
   delete[] sid;
   return max_sid;
 }

bool WERD_CHOICE::has_rtl_unichar_id ( ) const

has_rtl_unichar_id

Returns true if unichar_ids contain at least one "strongly" RTL unichar.

Definition at line 431 of file ratngs.cpp.

                                            {
   int i;
   for (i = 0; i < length_; ++i) {
     UNICHARSET::Direction dir = unicharset_->get_direction(unichar_ids_[i]);
     if (dir == UNICHARSET::U_RIGHT_TO_LEFT ||
         dir == UNICHARSET::U_RIGHT_TO_LEFT_ARABIC) {
       return true;
     }
   }
   return false;
 }

void WERD_CHOICE::init ( int reserved )

inline

Initializes WERD_CHOICE - reserves length slots in unichar_ids_ and fragment_length_ arrays. Sets other values to default (blank) values.

Definition at line 409 of file ratngs.h.

                                  {
     reserved_ = reserved;
     if (reserved > 0) {
       unichar_ids_ = new UNICHAR_ID[reserved];
       script_pos_ = new tesseract::ScriptPos[reserved];
       state_ = new int[reserved];
       certainties_ = new float[reserved];
     } else {
       unichar_ids_ = nullptr;
       script_pos_ = nullptr;
       state_ = nullptr;
       certainties_ = nullptr;
     }
     length_ = 0;
     adjust_factor_ = 1.0f;
     rating_ = 0.0;
     certainty_ = FLT_MAX;
     min_x_height_ = 0.0f;
     max_x_height_ = FLT_MAX;
     permuter_ = NO_PERM;
     unichars_in_script_order_ = false;  // Tesseract is strict left-to-right.
     dangerous_ambig_found_ = false;
   }

void WERD_CHOICE::init	(	const char *	src_string,
		const char *	src_lengths,
		float	src_rating,
		float	src_certainty,
		uint8_t	src_permuter
	)

Helper function to build a WERD_CHOICE from the given string, fragment lengths, rating, certainty and permuter. The function assumes that src_string is not nullptr. src_lengths argument could be nullptr, in which case the unichars in src_string are assumed to all be of length 1.

WERD_CHOICE::init

Helper function to build a WERD_CHOICE from the given string, fragment lengths, rating, certainty and permuter.

The function assumes that src_string is not nullptr. src_lengths argument could be nullptr, in which case the unichars in src_string are assumed to all be of length 1.

Definition at line 245 of file ratngs.cpp.

                                              {
   int src_string_len = strlen(src_string);
   if (src_string_len == 0) {
     this->init(8);
   } else {
     this->init(src_lengths ? strlen(src_lengths): src_string_len);
     length_ = reserved_;
     int offset = 0;
     for (int i = 0; i < length_; ++i) {
       int unichar_length = src_lengths ? src_lengths[i] : 1;
       unichar_ids_[i] =
           unicharset_->unichar_to_id(src_string+offset, unichar_length);
       state_[i] = 1;
       certainties_[i] = src_certainty;
       offset += unichar_length;
     }
   }
   adjust_factor_ = 1.0f;
   rating_ = src_rating;
   certainty_ = src_certainty;
   permuter_ = src_permuter;
   dangerous_ambig_found_ = false;
 }

bool WERD_CHOICE::IsAllSpaces ( ) const

inline

Definition at line 521 of file ratngs.h.

                            {
     for (int i = 0; i < length_; ++i) {
       if (unichar_ids_[i] != UNICHAR_SPACE) return false;
     }
     return true;
   }

int WERD_CHOICE::length ( ) const

inline

Definition at line 303 of file ratngs.h.

                             {
     return length_;
   }

void WERD_CHOICE::make_bad ( )

inline

Set the fields in this choice to be default (bad) values.

Definition at line 443 of file ratngs.h.

                          {
     length_ = 0;
     rating_ = kBadRating;
     certainty_ = -FLT_MAX;
   }

MATRIX_COORD WERD_CHOICE::MatrixCoord ( int index ) const

Definition at line 302 of file ratngs.cpp.

                                                      {
   int col = 0;
   for (int i = 0; i < index; ++i)
     col += state_[i];
   int row = col + state_[index] - 1;
   return MATRIX_COORD(col, row);
 }

float WERD_CHOICE::max_x_height ( ) const

inline

Definition at line 339 of file ratngs.h.

                                     {
     return max_x_height_;
   }

float WERD_CHOICE::min_x_height ( ) const

inline

Definition at line 336 of file ratngs.h.

                                     {
     return min_x_height_;
   }

WERD_CHOICE & WERD_CHOICE::operator+= ( const WERD_CHOICE & second )

WERD_CHOICE::operator+=

Cat a second word rating on the end of this current one. The ratings are added and the confidence is the min. If the permuters are NOT the same the permuter is set to COMPOUND_PERM

Definition at line 485 of file ratngs.cpp.

                                                                  {
   ASSERT_HOST(unicharset_ == second.unicharset_);
   while (reserved_ < length_ + second.length()) {
     this->double_the_size();
   }
   const UNICHAR_ID *other_unichar_ids = second.unichar_ids();
   for (int i = 0; i < second.length(); ++i) {
     unichar_ids_[length_ + i] = other_unichar_ids[i];
     state_[length_ + i] = second.state_[i];
     certainties_[length_ + i] = second.certainties_[i];
     script_pos_[length_ + i] = second.BlobPosition(i);
   }
   length_ += second.length();
   if (second.adjust_factor_ > adjust_factor_)
     adjust_factor_ = second.adjust_factor_;
   rating_ += second.rating();  // add ratings
   if (second.certainty() < certainty_) // take min
     certainty_ = second.certainty();
   if (second.dangerous_ambig_found_)
     dangerous_ambig_found_ = true;
   if (permuter_ == NO_PERM) {
     permuter_ = second.permuter();
   } else if (second.permuter() != NO_PERM &&
              second.permuter() != permuter_) {
     permuter_ = COMPOUND_PERM;
   }
   return *this;
 }

WERD_CHOICE & WERD_CHOICE::operator= ( const WERD_CHOICE & source )

WERD_CHOICE::operator=

Allocate enough memory to hold a copy of source and copy over all the information from source to this WERD_CHOICE.

Definition at line 521 of file ratngs.cpp.

                                                              {
   while (reserved_ < source.length()) {
     this->double_the_size();
   }
 
   unicharset_ = source.unicharset_;
   const UNICHAR_ID *other_unichar_ids = source.unichar_ids();
   for (int i = 0; i < source.length(); ++i) {
     unichar_ids_[i] = other_unichar_ids[i];
     state_[i] = source.state_[i];
     certainties_[i] = source.certainties_[i];
     script_pos_[i] = source.BlobPosition(i);
   }
   length_ = source.length();
   adjust_factor_ = source.adjust_factor_;
   rating_ = source.rating();
   certainty_ = source.certainty();
   min_x_height_ = source.min_x_height();
   max_x_height_ = source.max_x_height();
   permuter_ = source.permuter();
   dangerous_ambig_found_ = source.dangerous_ambig_found_;
   return *this;
 }

uint8_t WERD_CHOICE::permuter ( ) const

inline

Definition at line 346 of file ratngs.h.

                                   {
     return permuter_;
   }

const char * WERD_CHOICE::permuter_name ( uint8_t permuter )

static

Definition at line 194 of file ratngs.cpp.

                                                        {
   return kPermuterTypeNames[permuter];
 }

const char * WERD_CHOICE::permuter_name ( ) const

Definition at line 283 of file ratngs.cpp.

                                              {
   return kPermuterTypeNames[permuter_];
 }

void WERD_CHOICE::print ( ) const

inline

Definition at line 580 of file ratngs.h.

580 { this->print(""); }

WERD_CHOICE::print

void print() const

Definition: ratngs.h:580

void WERD_CHOICE::print ( const char * msg ) const

WERD_CHOICE::print

Print WERD_CHOICE to stdout.

Definition at line 724 of file ratngs.cpp.

                                              {
   tprintf("%s : ", msg);
   for (int i = 0; i < length_; ++i) {
     tprintf("%s", unicharset_->id_to_unichar(unichar_ids_[i]));
   }
   tprintf(" : R=%g, C=%g, F=%g, Perm=%d, xht=[%g,%g], ambig=%d\n",
           rating_, certainty_, adjust_factor_, permuter_,
           min_x_height_, max_x_height_, dangerous_ambig_found_);
   tprintf("pos");
   for (int i = 0; i < length_; ++i) {
     tprintf("\t%s", ScriptPosToString(script_pos_[i]));
   }
   tprintf("\nstr");
   for (int i = 0; i < length_; ++i) {
     tprintf("\t%s", unicharset_->id_to_unichar(unichar_ids_[i]));
   }
   tprintf("\nstate:");
   for (int i = 0; i < length_; ++i) {
     tprintf("\t%d ", state_[i]);
   }
   tprintf("\nC");
   for (int i = 0; i < length_; ++i) {
     tprintf("\t%.3f", certainties_[i]);
   }
   tprintf("\n");
 }

void WERD_CHOICE::print_state ( const char * msg ) const

Definition at line 752 of file ratngs.cpp.

                                                    {
   tprintf("%s", msg);
   for (int i = 0; i < length_; ++i)
     tprintf(" %d", state_[i]);
   tprintf("\n");
 }

void WERD_CHOICE::punct_stripped	(	int *	start,
		int *	end
	)		const

punct_stripped

Returns the half-open interval of unichar_id indices [start, end) which enclose the core portion of this word – the part after stripping punctuation from the left and right.

Definition at line 383 of file ratngs.cpp.

                                                            {
   *start = 0;
   *end = length() - 1;
   while (*start < length() &&
          unicharset()->get_ispunctuation(unichar_id(*start))) {
     (*start)++;
   }
   while (*end > -1 &&
          unicharset()->get_ispunctuation(unichar_id(*end))) {
     (*end)--;
   }
   (*end)++;
 }

float WERD_CHOICE::rating ( ) const

inline

Definition at line 327 of file ratngs.h.

                               {
     return rating_;
   }

void WERD_CHOICE::remove_last_unichar_id ( )

inline

Definition at line 483 of file ratngs.h.

483 { --length_; }

void WERD_CHOICE::remove_unichar_id ( int index )

inline

Definition at line 484 of file ratngs.h.

                                            {
     this->remove_unichar_ids(index, 1);
   }

void WERD_CHOICE::remove_unichar_ids	(	int	start,
		int	num
	)

remove_unichar_ids

Removes num unichar ids starting from index start from unichar_ids_ and updates length_ and fragment_lengths_ to reflect this change. Note: this function does not modify rating_ and certainty_.

Definition at line 342 of file ratngs.cpp.

                                                        {
   ASSERT_HOST(start >= 0 && start + num <= length_);
   // Accumulate the states to account for the merged blobs.
   for (int i = 0; i < num; ++i) {
     if (start > 0)
       state_[start - 1] += state_[start + i];
     else if (start + num < length_)
       state_[start + num] += state_[start + i];
   }
   for (int i = start; i + num < length_; ++i) {
     unichar_ids_[i] = unichar_ids_[i + num];
     script_pos_[i] = script_pos_[i + num];
     state_[i] = state_[i + num];
     certainties_[i] = certainties_[i + num];
   }
   length_ -= num;
 }

void WERD_CHOICE::reverse_and_mirror_unichar_ids ( )

reverse_and_mirror_unichar_ids

Reverses and mirrors unichars in unichar_ids.

Definition at line 365 of file ratngs.cpp.

                                                  {
   for (int i = 0; i < length_ / 2; ++i) {
     UNICHAR_ID tmp_id = unichar_ids_[i];
     unichar_ids_[i] = unicharset_->get_mirror(unichar_ids_[length_-1-i]);
     unichar_ids_[length_-1-i] = unicharset_->get_mirror(tmp_id);
   }
   if (length_ % 2 != 0) {
     unichar_ids_[length_/2] = unicharset_->get_mirror(unichar_ids_[length_/2]);
   }
 }

ScriptPos WERD_CHOICE::ScriptPositionOf	(	bool	print_debug,
		const UNICHARSET &	unicharset,
		const TBOX &	blob_box,
		UNICHAR_ID	unichar_id
	)

static

Definition at line 629 of file ratngs.cpp.

                                                                {
   ScriptPos retval = tesseract::SP_NORMAL;
   int top = blob_box.top();
   int bottom = blob_box.bottom();
   int min_bottom, max_bottom, min_top, max_top;
   unicharset.get_top_bottom(unichar_id,
                             &min_bottom, &max_bottom,
                             &min_top, &max_top);
 
   int sub_thresh_top = min_top - kMinSubscriptOffset;
   int sub_thresh_bot = kBlnBaselineOffset - kMinSubscriptOffset;
   int sup_thresh_bot = max_bottom + kMinSuperscriptOffset;
   if (bottom <= kMaxDropCapBottom) {
     retval = tesseract::SP_DROPCAP;
   } else if (top < sub_thresh_top && bottom < sub_thresh_bot) {
     retval = tesseract::SP_SUBSCRIPT;
   } else if (bottom > sup_thresh_bot) {
     retval = tesseract::SP_SUPERSCRIPT;
   }
 
   if (print_debug) {
     const char *pos = ScriptPosToString(retval);
     tprintf("%s Character %s[bot:%d top: %d]  "
             "bot_range[%d,%d]  top_range[%d, %d] "
             "sub_thresh[bot:%d top:%d]  sup_thresh_bot %d\n",
             pos, unicharset.id_to_unichar(unichar_id),
             bottom, top,
             min_bottom, max_bottom, min_top, max_top,
             sub_thresh_bot, sub_thresh_top,
             sup_thresh_bot);
   }
   return retval;
 }

void WERD_CHOICE::set_adjust_factor ( float factor )

inline

Definition at line 309 of file ratngs.h.

                                        {
     adjust_factor_ = factor;
   }

void WERD_CHOICE::set_blob_choice	(	int	index,
		int	blob_count,
		const BLOB_CHOICE *	blob_choice
	)

Definition at line 312 of file ratngs.cpp.

                                                                   {
   unichar_ids_[index] = blob_choice->unichar_id();
   script_pos_[index] = tesseract::SP_NORMAL;
   state_[index] = blob_count;
   certainties_[index] = blob_choice->certainty();
 }

void WERD_CHOICE::set_certainty ( float new_val )

inline

Definition at line 372 of file ratngs.h.

                                            {
     certainty_ = new_val;
   }

void WERD_CHOICE::set_dangerous_ambig_found_ ( bool value )

inline

Definition at line 366 of file ratngs.h.

                                               {
     dangerous_ambig_found_ = value;
   }

void WERD_CHOICE::set_length ( int len )

inline

Definition at line 381 of file ratngs.h.

                                   {
     ASSERT_HOST(reserved_ >= len);
     length_ = len;
   }

void WERD_CHOICE::set_permuter ( uint8_t perm )

inline

Definition at line 375 of file ratngs.h.

                                          {
     permuter_ = perm;
   }

void WERD_CHOICE::set_rating ( float new_val )

inline

Definition at line 369 of file ratngs.h.

                                         {
     rating_ = new_val;
   }

void WERD_CHOICE::set_unichar_id	(	UNICHAR_ID	unichar_id,
		int	index
	)

inline

Definition at line 359 of file ratngs.h.

                                                                {
     assert(index < length_);
     unichar_ids_[index] = unichar_id;
   }

void WERD_CHOICE::set_unichar_id	(	UNICHAR_ID	unichar_id,
		int	blob_count,
		float	rating,
		float	certainty,
		int	index
	)

inline

Definition at line 464 of file ratngs.h.

                                                                        {
     assert(index < length_);
     unichar_ids_[index] = unichar_id;
     state_[index] = blob_count;
     certainties_[index] = certainty;
     script_pos_[index] = tesseract::SP_NORMAL;
     rating_ += rating;
     if (certainty < certainty_) {
       certainty_ = certainty;
     }
   }

bool WERD_CHOICE::set_unichars_in_script_order ( bool in_script_order )

inline

Definition at line 531 of file ratngs.h.

                                                           {
     return unichars_in_script_order_ = in_script_order;
   }

void WERD_CHOICE::set_x_heights	(	float	min_height,
		float	max_height
	)

inline

Definition at line 342 of file ratngs.h.

                                                                 {
     min_x_height_ = min_height;
     max_x_height_ = max_height;
   }

void WERD_CHOICE::SetAllScriptPositions ( tesseract::ScriptPos position )

Definition at line 623 of file ratngs.cpp.

                                                                    {
   for (int i = 0; i < length_; ++i)
     script_pos_[i] = position;
 }

void WERD_CHOICE::SetScriptPositions	(	bool	small_caps,
		TWERD *	word,
		int	debug = `0`
	)

Definition at line 550 of file ratngs.cpp.

                                                                             {
   // Initialize to normal.
   for (int i = 0; i < length_; ++i)
     script_pos_[i] = tesseract::SP_NORMAL;
   if (word->blobs.empty() || word->NumBlobs() != TotalOfStates()) {
     return;
   }
 
   int position_counts[4] = { 0, 0, 0, 0 };
 
   int chunk_index = 0;
   for (int blob_index = 0; blob_index < length_; ++blob_index, ++chunk_index) {
     TBLOB* tblob = word->blobs[chunk_index];
     int uni_id = unichar_id(blob_index);
     TBOX blob_box = tblob->bounding_box();
     if (state_ != nullptr) {
       for (int i = 1; i <  state_[blob_index]; ++i) {
         ++chunk_index;
         tblob = word->blobs[chunk_index];
         blob_box += tblob->bounding_box();
       }
     }
     script_pos_[blob_index] = ScriptPositionOf(false, *unicharset_, blob_box,
                                                uni_id);
     if (small_caps && script_pos_[blob_index] != tesseract::SP_DROPCAP) {
       script_pos_[blob_index] = tesseract::SP_NORMAL;
     }
     position_counts[script_pos_[blob_index]]++;
   }
   // If almost everything looks like a superscript or subscript,
   // we most likely just got the baseline wrong.
   if (position_counts[tesseract::SP_SUBSCRIPT] > 0.75 * length_ ||
       position_counts[tesseract::SP_SUPERSCRIPT] > 0.75 * length_) {
     if (debug >= 2) {
       tprintf("Most characters of %s are subscript or superscript.\n"
               "That seems wrong, so I'll assume we got the baseline wrong\n",
               unichar_string().string());
     }
     for (int i = 0; i < length_; i++) {
       ScriptPos sp = script_pos_[i];
       if (sp == tesseract::SP_SUBSCRIPT || sp == tesseract::SP_SUPERSCRIPT) {
         position_counts[sp]--;
         position_counts[tesseract::SP_NORMAL]++;
         script_pos_[i] = tesseract::SP_NORMAL;
       }
     }
   }
 
   if ((debug >= 1 && position_counts[tesseract::SP_NORMAL] < length_) ||
       debug >= 2) {
     tprintf("SetScriptPosition on %s\n", unichar_string().string());
     int chunk_index = 0;
     for (int blob_index = 0; blob_index < length_; ++blob_index) {
       if (debug >= 2 || script_pos_[blob_index] != tesseract::SP_NORMAL) {
         TBLOB* tblob = word->blobs[chunk_index];
         ScriptPositionOf(true, *unicharset_, tblob->bounding_box(),
                          unichar_id(blob_index));
       }
       chunk_index += state_ != nullptr ? state_[blob_index] : 1;
     }
   }
 }

void WERD_CHOICE::SetScriptPositions	(	const tesseract::ScriptPos *	positions,
		int	length
	)

Definition at line 613 of file ratngs.cpp.

                                                  {
   ASSERT_HOST(length == length_);
   if (positions != script_pos_) {
     delete [] script_pos_;
     script_pos_ = new ScriptPos[length];
     memcpy(script_pos_, positions, sizeof(positions[0]) * length);
   }
 }

WERD_CHOICE WERD_CHOICE::shallow_copy	(	int	start,
		int	end
	)		const

Definition at line 414 of file ratngs.cpp.

                                                               {
   ASSERT_HOST(start >= 0 && start <= length_);
   ASSERT_HOST(end >= 0 && end <= length_);
   if (end < start) { end = start; }
   WERD_CHOICE retval(unicharset_, end - start);
   for (int i = start; i < end; i++) {
     retval.append_unichar_id_space_allocated(
         unichar_ids_[i], state_[i], 0.0f, certainties_[i]);
   }
   return retval;
 }

int WERD_CHOICE::state ( int index ) const

inline

Definition at line 319 of file ratngs.h.

                                     {
     return state_[index];
   }

void WERD_CHOICE::string_and_lengths	(	STRING *	word_str,
		STRING *	word_lengths_str
	)		const

string_and_lengths

Populates the given word_str with unichars from unichar_ids and and word_lengths_str with the corresponding unichar lengths.

Definition at line 449 of file ratngs.cpp.

                                                                      {
   *word_str = "";
   if (word_lengths_str != nullptr) *word_lengths_str = "";
   for (int i = 0; i < length_; ++i) {
     const char *ch = unicharset_->id_to_unichar_ext(unichar_ids_[i]);
     *word_str += ch;
     if (word_lengths_str != nullptr) {
       *word_lengths_str += strlen(ch);
     }
   }
 }

int WERD_CHOICE::TotalOfStates ( ) const

Definition at line 711 of file ratngs.cpp.

                                      {
   int total_chunks = 0;
   for (int i = 0; i < length_; ++i) {
     total_chunks += state_[i];
   }
   return total_chunks;
 }

UNICHAR_ID WERD_CHOICE::unichar_id ( int index ) const

inline

Definition at line 315 of file ratngs.h.

                                                 {
     assert(index < length_);
     return unichar_ids_[index];
   }

const UNICHAR_ID* WERD_CHOICE::unichar_ids ( ) const

inline

Definition at line 312 of file ratngs.h.

                                                {
     return unichar_ids_;
   }

const STRING& WERD_CHOICE::unichar_lengths ( ) const

inline

Definition at line 548 of file ratngs.h.

                                         {
     this->string_and_lengths(&unichar_string_, &unichar_lengths_);
     return unichar_lengths_;
   }

const STRING& WERD_CHOICE::unichar_string ( ) const

inline

Definition at line 541 of file ratngs.h.

                                        {
     this->string_and_lengths(&unichar_string_, &unichar_lengths_);
     return unichar_string_;
   }

bool WERD_CHOICE::unichars_in_script_order ( ) const

inline

Definition at line 535 of file ratngs.h.

                                         {
     return unichars_in_script_order_;
   }

const UNICHARSET* WERD_CHOICE::unicharset ( ) const

inline

Definition at line 300 of file ratngs.h.

                                        {
     return unicharset_;
   }

void WERD_CHOICE::UpdateStateForSplit ( int blob_position )

Definition at line 699 of file ratngs.cpp.

                                                        {
   int total_chunks = 0;
   for (int i = 0; i < length_; ++i) {
     total_chunks += state_[i];
     if (total_chunks > blob_position) {
       ++state_[i];
       return;
     }
   }
 }

Member Data Documentation

const float WERD_CHOICE::kBadRating = 100000.0

static

Definition at line 275 of file ratngs.h.

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

src/ccstruct/ratngs.h
src/ccstruct/ratngs.cpp

Public Member Functions

Static Public Member Functions

Static Public Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation