tesseract  3.04.00
mf.h File Reference
#include "ocrfeatures.h"
#include "blobs.h"

Go to the source code of this file.

Typedefs

typedef float MicroFeature[MFCount]
 

Enumerations

enum  MF_PARAM_NAME {
  MFXPosition, MFYPosition, MFLength, MFDirection,
  MFBulge1, MFBulge2, MFCount
}
 

Functions

FEATURE_SET ExtractMicros (TBLOB *Blob, const DENORM &cn_denorm)
 

Typedef Documentation

typedef float MicroFeature[MFCount]

Definition at line 33 of file mf.h.

Enumeration Type Documentation


Include Files and Type Defines

Enumerator
MFXPosition 
MFYPosition 
MFLength 
MFDirection 
MFBulge1 
MFBulge2 
MFCount 

Definition at line 27 of file mf.h.

27  {
30  MFCount // For array sizes.
Definition: mf.h:28
Definition: mf.h:29
Definition: mf.h:29
Definition: mf.h:28
MF_PARAM_NAME
Definition: mf.h:27
Definition: mf.h:30
Definition: mf.h:29
Definition: mf.h:29

Function Documentation

FEATURE_SET ExtractMicros ( TBLOB Blob,
const DENORM cn_denorm 
)

Include Files and Type Defines

Global Data Definitions and Declarations

Private Code

Definition at line 36 of file mf.cpp.

36  {
37 /*
38  ** Parameters:
39  ** Blob blob to extract micro-features from
40  ** denorm control parameter to feature extractor.
41  ** Globals: none
42  ** Operation: Call the old micro-feature extractor and then copy
43  ** the features into the new format. Then deallocate the
44  ** old micro-features.
45  ** Return: Micro-features for Blob.
46  ** Exceptions: none
47  ** History: Wed May 23 18:06:38 1990, DSJ, Created.
48  */
49  int NumFeatures;
50  MICROFEATURES Features, OldFeatures;
51  FEATURE_SET FeatureSet;
52  FEATURE Feature;
53  MICROFEATURE OldFeature;
54 
55  OldFeatures = BlobMicroFeatures(Blob, cn_denorm);
56  if (OldFeatures == NULL)
57  return NULL;
58  NumFeatures = count (OldFeatures);
59  FeatureSet = NewFeatureSet (NumFeatures);
60 
61  Features = OldFeatures;
62  iterate(Features) {
63  OldFeature = (MICROFEATURE) first_node (Features);
64  Feature = NewFeature (&MicroFeatureDesc);
65  Feature->Params[MFDirection] = OldFeature[ORIENTATION];
66  Feature->Params[MFXPosition] = OldFeature[XPOSITION];
67  Feature->Params[MFYPosition] = OldFeature[YPOSITION];
68  Feature->Params[MFLength] = OldFeature[MFLENGTH];
69 
70  // Bulge features are deprecated and should not be used. Set to 0.
71  Feature->Params[MFBulge1] = 0.0f;
72  Feature->Params[MFBulge2] = 0.0f;
73 
74 #ifndef _WIN32
75  // Assert that feature parameters are well defined.
76  int i;
77  for (i = 0; i < Feature->Type->NumParams; i++) {
78  ASSERT_HOST(!isnan(Feature->Params[i]));
79  }
80 #endif
81 
82  AddFeature(FeatureSet, Feature);
83  }
84  FreeMicroFeatures(OldFeatures);
85  return FeatureSet;
86 } /* ExtractMicros */
const FEATURE_DESC_STRUCT MicroFeatureDesc
Definition: mf.h:28
Definition: mf.h:29
Definition: mf.h:29
const FEATURE_DESC_STRUCT * Type
Definition: ocrfeatures.h:64
#define NULL
Definition: host.h:144
FLOAT32 * MICROFEATURE
Definition: mfdefs.h:33
#define isnan(x)
Definition: mathfix.h:31
Definition: mf.h:28
#define ORIENTATION
Definition: mfdefs.h:39
#define XPOSITION
Definition: mfdefs.h:36
#define iterate(l)
Definition: oldlist.h:159
Definition: mf.h:29
BOOL8 AddFeature(FEATURE_SET FeatureSet, FEATURE Feature)
Definition: ocrfeatures.cpp:35
#define YPOSITION
Definition: mfdefs.h:37
void FreeMicroFeatures(MICROFEATURES MicroFeatures)
Definition: mfdefs.cpp:45
MICROFEATURES BlobMicroFeatures(TBLOB *Blob, const DENORM &cn_denorm)
Definition: mfx.cpp:62
FEATURE_SET NewFeatureSet(int NumFeatures)
FLOAT32 Params[1]
Definition: ocrfeatures.h:65
FEATURE NewFeature(const FEATURE_DESC_STRUCT *FeatureDesc)
#define first_node(l)
Definition: oldlist.h:139
Definition: mf.h:29
int count(LIST var_list)
Definition: oldlist.cpp:108
#define MFLENGTH
Definition: mfdefs.h:38
#define ASSERT_HOST(x)
Definition: errcode.h:84