tesseract  3.04.00
ocropus add-ons

Functions

TESS_LOCAL void tesseract::TessBaseAPI::AdaptToCharacter (const char *unichar_repr, int length, float baseline, float xheight, float descender, float ascender)
 
TESS_LOCAL PAGE_REStesseract::TessBaseAPI::RecognitionPass1 (BLOCK_LIST *block_list)
 
TESS_LOCAL PAGE_REStesseract::TessBaseAPI::RecognitionPass2 (BLOCK_LIST *block_list, PAGE_RES *pass1_result)
 
TESS_LOCAL void tesseract::TessBaseAPI::DetectParagraphs (bool after_text_recognition)
 
static TESS_LOCAL int tesseract::TessBaseAPI::TesseractExtractResult (char **text, int **lengths, float **costs, int **x0, int **y0, int **x1, int **y1, PAGE_RES *page_res)
 
TESS_LOCAL const PAGE_REStesseract::TessBaseAPI::GetPageRes () const
 

Detailed Description

Function Documentation

void tesseract::TessBaseAPI::AdaptToCharacter ( const char *  unichar_repr,
int  length,
float  baseline,
float  xheight,
float  descender,
float  ascender 
)
protected

Adapt to recognize the current image as the given character. The image must be preloaded and be just an image of a single character.

Adapt to recognize the current image as the given character. The image must be preloaded into pix_binary_ and be just an image of a single character.

Definition at line 2354 of file baseapi.cpp.

2359  {
2360  UNICHAR_ID id = tesseract_->unicharset.unichar_to_id(unichar_repr, length);
2361  TBLOB *blob = make_tesseract_blob(baseline, xheight, descender, ascender,
2363  tesseract_->pix_binary());
2364  float threshold;
2365  float best_rating = -100;
2366 
2367 
2368  // Classify to get a raw choice.
2369  BLOB_CHOICE_LIST choices;
2370  tesseract_->AdaptiveClassifier(blob, &choices);
2371  BLOB_CHOICE_IT choice_it;
2372  choice_it.set_to_list(&choices);
2373  for (choice_it.mark_cycle_pt(); !choice_it.cycled_list();
2374  choice_it.forward()) {
2375  if (choice_it.data()->rating() > best_rating) {
2376  best_rating = choice_it.data()->rating();
2377  }
2378  }
2379 
2380  threshold = tesseract_->matcher_good_threshold;
2381 
2382  if (blob->outlines)
2383  tesseract_->AdaptToChar(blob, id, kUnknownFontinfoId, threshold,
2385  delete blob;
2386 }
TESSLINE * outlines
Definition: blobs.h:377
Pix * pix_binary() const
Tesseract * tesseract_
The underlying data object.
Definition: baseapi.h:833
TBLOB * make_tesseract_blob(float baseline, float xheight, float descender, float ascender, bool numeric_mode, Pix *pix)
Definition: baseapi.cpp:2336
int UNICHAR_ID
Definition: unichar.h:33
bool classify_bln_numeric_mode
Definition: classify.h:500
ADAPT_TEMPLATES AdaptedTemplates
Definition: classify.h:473
Definition: blobs.h:261
void AdaptiveClassifier(TBLOB *Blob, BLOB_CHOICE_LIST *Choices)
Definition: adaptmatch.cpp:185
const UNICHAR_ID unichar_to_id(const char *const unichar_repr) const
Definition: unicharset.cpp:194
void AdaptToChar(TBLOB *Blob, CLASS_ID ClassId, int FontinfoId, FLOAT32 Threshold, ADAPT_TEMPLATES adaptive_templates)
Definition: adaptmatch.cpp:887
UNICHARSET unicharset
Definition: ccutil.h:72
double matcher_good_threshold
Definition: classify.h:420
void tesseract::TessBaseAPI::DetectParagraphs ( bool  after_text_recognition)
protected

Definition at line 2405 of file baseapi.cpp.

2405  {
2406  int debug_level = 0;
2407  GetIntVariable("paragraph_debug_level", &debug_level);
2408  if (paragraph_models_ == NULL)
2410  MutableIterator *result_it = GetMutableIterator();
2411  do { // Detect paragraphs for this block
2413  ::tesseract::DetectParagraphs(debug_level, after_text_recognition,
2414  result_it, &models);
2415  *paragraph_models_ += models;
2416  } while (result_it->Next(RIL_BLOCK));
2417  delete result_it;
2418 }
void DetectParagraphs(int debug_level, GenericVector< RowInfo > *row_infos, GenericVector< PARA * > *row_owners, PARA_LIST *paragraphs, GenericVector< ParagraphModel * > *models)
GenericVector< ParagraphModel * > * paragraph_models_
Definition: baseapi.h:842
#define NULL
Definition: host.h:144
MutableIterator * GetMutableIterator()
Definition: baseapi.cpp:1288
bool GetIntVariable(const char *name, int *value) const
Definition: baseapi.cpp:228
TESS_LOCAL const PAGE_RES* tesseract::TessBaseAPI::GetPageRes ( ) const
inlineprotected

Definition at line 831 of file baseapi.h.

831  {
832  return page_res_;
833  };
PAGE_RES * page_res_
The page-level data.
Definition: baseapi.h:844
PAGE_RES * tesseract::TessBaseAPI::RecognitionPass1 ( BLOCK_LIST *  block_list)
protected

Recognize text doing one pass only, using settings for a given pass.

Definition at line 2389 of file baseapi.cpp.

2389  {
2390  PAGE_RES *page_res = new PAGE_RES(false, block_list,
2392  tesseract_->recog_all_words(page_res, NULL, NULL, NULL, 1);
2393  return page_res;
2394 }
Tesseract * tesseract_
The underlying data object.
Definition: baseapi.h:833
#define NULL
Definition: host.h:144
WERD_CHOICE * prev_word_best_choice_
Definition: wordrec.h:416
bool recog_all_words(PAGE_RES *page_res, ETEXT_DESC *monitor, const TBOX *target_word_box, const char *word_config, int dopasses)
Definition: control.cpp:293
PAGE_RES * tesseract::TessBaseAPI::RecognitionPass2 ( BLOCK_LIST *  block_list,
PAGE_RES pass1_result 
)
protected

Definition at line 2396 of file baseapi.cpp.

2397  {
2398  if (!pass1_result)
2399  pass1_result = new PAGE_RES(false, block_list,
2401  tesseract_->recog_all_words(pass1_result, NULL, NULL, NULL, 2);
2402  return pass1_result;
2403 }
Tesseract * tesseract_
The underlying data object.
Definition: baseapi.h:833
#define NULL
Definition: host.h:144
WERD_CHOICE * prev_word_best_choice_
Definition: wordrec.h:416
bool recog_all_words(PAGE_RES *page_res, ETEXT_DESC *monitor, const TBOX *target_word_box, const char *word_config, int dopasses)
Definition: control.cpp:293
int tesseract::TessBaseAPI::TesseractExtractResult ( char **  text,
int **  lengths,
float **  costs,
int **  x0,
int **  y0,
int **  x1,
int **  y1,
PAGE_RES page_res 
)
staticprotected

Extract the OCR results, costs (penalty points for uncertainty), and the bounding boxes of the characters.

Definition at line 2491 of file baseapi.cpp.

2498  {
2499  TESS_CHAR_LIST tess_chars;
2500  TESS_CHAR_IT tess_chars_it(&tess_chars);
2501  extract_result(&tess_chars_it, page_res);
2502  tess_chars_it.move_to_first();
2503  int n = tess_chars.length();
2504  int text_len = 0;
2505  *lengths = new int[n];
2506  *costs = new float[n];
2507  *x0 = new int[n];
2508  *y0 = new int[n];
2509  *x1 = new int[n];
2510  *y1 = new int[n];
2511  int i = 0;
2512  for (tess_chars_it.mark_cycle_pt();
2513  !tess_chars_it.cycled_list();
2514  tess_chars_it.forward(), i++) {
2515  TESS_CHAR *tc = tess_chars_it.data();
2516  text_len += (*lengths)[i] = tc->length;
2517  (*costs)[i] = tc->cost;
2518  (*x0)[i] = tc->box.left();
2519  (*y0)[i] = tc->box.bottom();
2520  (*x1)[i] = tc->box.right();
2521  (*y1)[i] = tc->box.top();
2522  }
2523  char *p = *text = new char[text_len];
2524 
2525  tess_chars_it.move_to_first();
2526  for (tess_chars_it.mark_cycle_pt();
2527  !tess_chars_it.cycled_list();
2528  tess_chars_it.forward()) {
2529  TESS_CHAR *tc = tess_chars_it.data();
2530  strncpy(p, tc->unicode_repr, tc->length);
2531  p += tc->length;
2532  }
2533  return n;
2534 }