tesseract-ocr/classify/picofeat.h File Reference

#include "ocrfeatures.h"
#include "params.h"

Go to the source code of this file.

Defines
#define	MAX_PICO_FEATURES   (1000)
#define	GetPicoFeatureLength()   (PicoFeatureLength)
Enumerations
enum	IntParams { IntX, IntY, IntDir }
enum	GeoParams { GeoBottom, GeoTop, GeoWidth, GeoCount }
enum	PICO_FEAT_PARAM_NAME { PicoFeatY, PicoFeatDir, PicoFeatX }
Functions
FEATURE_SET	ExtractIntCNFeatures (TBLOB *Blob, const DENORM &denorm)
FEATURE_SET	ExtractIntGeoFeatures (TBLOB *Blob, const DENORM &denorm)
Variables
double	classify_pico_feature_length = 0.05
FLOAT32	PicoFeatureLength

---

Define Documentation

#define GetPicoFeatureLength

(

)

(PicoFeatureLength)

---------------------------------------------------------------------------- Public Function Prototypes ----------------------------------------------------------------------------

Definition at line 59 of file picofeat.h.

#define MAX_PICO_FEATURES   (1000)

Definition at line 47 of file picofeat.h.

---

Enumeration Type Documentation

enum GeoParams

Enumerator:

GeoBottom
GeoTop
GeoWidth
GeoCount

Definition at line 35 of file picofeat.h.

               {
  GeoBottom,   // Bounding box bottom in baseline space (0-255).
  GeoTop,      // Bounding box top in baseline space (0-255).
  GeoWidth,    // Bounding box width in baseline space (0-255).

  GeoCount     // Number of geo features.
};

enum IntParams

---------------------------------------------------------------------------- Include Files and Type Defines ----------------------------------------------------------------------------

Enumerator:

IntX
IntY
IntDir

Definition at line 28 of file picofeat.h.

               {
  IntX,   // x-position (0-255).
  IntY,   // y-position (0-255).
  IntDir  // Direction (0-255, circular).
};

enum PICO_FEAT_PARAM_NAME

Enumerator:

PicoFeatY
PicoFeatDir
PicoFeatX

Definition at line 43 of file picofeat.h.

{ PicoFeatY, PicoFeatDir, PicoFeatX }

---

Function Documentation

FEATURE_SET ExtractIntCNFeatures	(	TBLOB *	Blob,
		const DENORM &	denorm
	)

Definition at line 227 of file picofeat.cpp.

                                                                    {
/*
 ** Parameters:
 **   blob    blob to extract features from
 **   denorm  normalization/denormalization parameters.
 ** Return: Integer character-normalized features for blob.
 ** Exceptions: none
 ** History: 8/8/2011, rays, Created.
 */
  tesseract::TrainingSample* sample = GetIntFeatures(
      tesseract::NM_CHAR_ANISOTROPIC, blob, denorm);
  if (sample == NULL) return NULL;

  int num_features = sample->num_features();
  const INT_FEATURE_STRUCT* features = sample->features();
  FEATURE_SET feature_set = NewFeatureSet(num_features);
  for (int f = 0; f < num_features; ++f) {
    FEATURE feature = NewFeature(&IntFeatDesc);

    feature->Params[IntX] = features[f].X;
    feature->Params[IntY] = features[f].Y;
    feature->Params[IntDir] = features[f].Theta;
    AddFeature(feature_set, feature);
  }
  delete sample;

  return feature_set;
}                                /* ExtractIntCNFeatures */

FEATURE_SET ExtractIntGeoFeatures	(	TBLOB *	Blob,
		const DENORM &	denorm
	)

Definition at line 257 of file picofeat.cpp.

                                                                     {
/*
 ** Parameters:
 **   blob    blob to extract features from
 **   denorm  normalization/denormalization parameters.
 ** Return: Geometric (top/bottom/width) features for blob.
 ** Exceptions: none
 ** History: 8/8/2011, rays, Created.
 */
  tesseract::TrainingSample* sample = GetIntFeatures(
      tesseract::NM_CHAR_ANISOTROPIC, blob, denorm);
  if (sample == NULL) return NULL;

  FEATURE_SET feature_set = NewFeatureSet(1);
  FEATURE feature = NewFeature(&IntFeatDesc);

  feature->Params[GeoBottom] = sample->geo_feature(GeoBottom);
  feature->Params[GeoTop] = sample->geo_feature(GeoTop);
  feature->Params[GeoWidth] = sample->geo_feature(GeoWidth);
  AddFeature(feature_set, feature);
  delete sample;

  return feature_set;
}                                /* ExtractIntGeoFeatures */

---

Variable Documentation

double classify_pico_feature_length = 0.05

"Pico Feature Length"

---------------------------------------------------------------------------- Include Files and Type Defines ---------------------------------------------------------------------------- "Pico Feature Length"

Definition at line 39 of file picofeat.cpp.

FLOAT32 PicoFeatureLength

---------------------------------------------------------------------------- Global Data Definitions and Declarations ----------------------------------------------------------------------------