tesseract 4.1.1
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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

namespace  tesseract
 

Functions

void InitIntegerFX ()
 
FCOORD FeatureDirection (uint8_t theta)
 
TrainingSampletesseract::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 66 of file intfx.cpp.

66 {
67 return FCOORD(cos_table[theta], sin_table[theta]);
68}
Definition: points.h:189

◆ InitIntegerFX()

void InitIntegerFX ( )

Public Function Prototypes


Public Code

Definition at line 49 of file intfx.cpp.

49 {
50 // Guards write access to AtanTable so we don't create it more than once.
51 static tesseract::CCUtilMutex atan_table_mutex;
52 static bool atan_table_init = false;
53 atan_table_mutex.Lock();
54 if (!atan_table_init) {
55 for (int i = 0; i < INT_CHAR_NORM_RANGE; ++i) {
56 cos_table[i] = cos(i * 2 * M_PI / INT_CHAR_NORM_RANGE + M_PI);
57 sin_table[i] = sin(i * 2 * M_PI / INT_CHAR_NORM_RANGE + M_PI);
58 }
59 atan_table_init = true;
60 }
61 atan_table_mutex.Unlock();
62}
#define INT_CHAR_NORM_RANGE
Definition: intproto.h:130

Variable Documentation

◆ kStandardFeatureLength

const double kStandardFeatureLength = 64.0 / 5

Definition at line 46 of file intfx.h.