intfx.h File Reference

#include "blobs.h"
#include "intproto.h"
#include "normalis.h"
#include <cmath>

Go to the source code of this file.

Classes
struct	INT_FX_RESULT_STRUCT

Namespaces
	tesseract

Functions
void	InitIntegerFX ()
FCOORD	FeatureDirection (uint8_t theta)
TrainingSample *	tesseract::BlobToTrainingSample (const TBLOB &blob, bool nonlinear_norm, INT_FX_RESULT_STRUCT *fx_info, GenericVector< INT_FEATURE_STRUCT > *bl_features)

Variables
const double	kStandardFeatureLength = 64.0 / 5

Function Documentation

FeatureDirection()

FCOORD FeatureDirection

(

uint8_t

theta

)

Definition at line 64 of file intfx.cpp.

                                       {
  return FCOORD(cos_table[theta], sin_table[theta]);

InitIntegerFX()

void InitIntegerFX

(

)

---

Public Function Prototypes

---

Public Code

Definition at line 48 of file intfx.cpp.

                     {
  // Guards write access to AtanTable so we don't create it more than once.
  static std::mutex atan_table_mutex;
  static bool atan_table_init = false;
  std::lock_guard<std::mutex> guard(atan_table_mutex);
  if (!atan_table_init) {
    for (int i = 0; i < INT_CHAR_NORM_RANGE; ++i) {
      cos_table[i] = cos(i * 2 * M_PI / INT_CHAR_NORM_RANGE + M_PI);
      sin_table[i] = sin(i * 2 * M_PI / INT_CHAR_NORM_RANGE + M_PI);
    }
    atan_table_init = true;
  }

Variable Documentation

kStandardFeatureLength

const double kStandardFeatureLength = 64.0 / 5

Definition at line 45 of file intfx.h.