classify/blobclass.cpp File Reference

#include "blobclass.h"
#include "fxdefs.h"
#include "variables.h"
#include "extract.h"
#include "efio.h"
#include "callcpp.h"
#include "chartoname.h"
#include <math.h>
#include <stdio.h>
#include <signal.h>

Go to the source code of this file.

Defines

• #define FONT_NAME   "UnknownFont"
• #define MAXCHARNAME   20
• #define MAXFILENAME   80
• #define MAXFILENAME   80
• #define MAXFONTNAME   20
• #define MAXMATCHES   10
• #define TRAIN_SUFFIX   ".tr"

Functions

• void InitBlobClassifierVars ()

  Install blob classifier variables into the wiseowl variable system.
  

• void LearnBlob (TBLOB *Blob, TEXTROW *Row, char BlobText[], int TextLength)

  Extract micro-features from the specified blob and append them to the appropriate file.
  

Variables

• static const char * FontName = FONT_NAME
• char imagefile []

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Define Documentation

#define FONT_NAME   "UnknownFont"

Definition at line 39 of file blobclass.cpp.

Referenced by InitBlobClassifierVars().

#define MAXCHARNAME   20

used in LearnBlob

Definition at line 76 of file blobclass.cpp.

Referenced by LearnBlob().

#define MAXFILENAME   80

Note:

File: blobclass.cpp
High level blob classification and training routines.

Author:

Dan Johnson

Date:

7/21/89, DSJ, Created.

 ** (c) Copyright Hewlett-Packard Company, 1988.
 ** Licensed under the Apache License, Version 2.0 (the "License");
 ** you may not use this file except in compliance with the License.
 ** You may obtain a copy of the License at
 ** http://www.apache.org/licenses/LICENSE-2.0
 ** Unless required by applicable law or agreed to in writing, software
 ** distributed under the License is distributed on an "AS IS" BASIS,
 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 ** See the License for the specific language governing permissions and
 ** limitations under the License.

Definition at line 74 of file blobclass.cpp.

#define MAXFILENAME   80

Note:

File: blobclass.cpp
High level blob classification and training routines.

Author:

Dan Johnson

Date:

7/21/89, DSJ, Created.

 ** (c) Copyright Hewlett-Packard Company, 1988.
 ** Licensed under the Apache License, Version 2.0 (the "License");
 ** you may not use this file except in compliance with the License.
 ** You may obtain a copy of the License at
 ** http://www.apache.org/licenses/LICENSE-2.0
 ** Unless required by applicable law or agreed to in writing, software
 ** distributed under the License is distributed on an "AS IS" BASIS,
 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 ** See the License for the specific language governing permissions and
 ** limitations under the License.

Definition at line 74 of file blobclass.cpp.

Referenced by LearnBlob().

#define MAXFONTNAME   20

used in LearnBlob

Definition at line 78 of file blobclass.cpp.

#define MAXMATCHES   10

Definition at line 36 of file blobclass.cpp.

#define TRAIN_SUFFIX   ".tr"

used in LearnBlob

Definition at line 80 of file blobclass.cpp.

Referenced by LearnBlob().

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Function Documentation

void InitBlobClassifierVars

(

)

Install blob classifier variables into the wiseowl variable system.

Parameters:

none

Note:

Globals: FontName name of font being trained on

Returns:

none

Note:

Exceptions: none

Date:

Fri Jan 19 16:13:33 1990, DSJ, Created.

Definition at line 64 of file blobclass.cpp.

References dummy, FONT_NAME, FontName, and string_variable.

Referenced by mfeature_variables().

                              { 
  VALUE dummy;

  string_variable (FontName, "FontName", FONT_NAME);

}                                /* InitBlobClassifierVars */

void LearnBlob	(	TBLOB *	Blob,
		TEXTROW *	Row,
		char	BlobText[],
		int	TextLength
	)

Extract micro-features from the specified blob and append them to the appropriate file.

Parameters:

	Blob	blob whose micro-features are to be learned
	Row	row of text that blob came from
	BlobText	text that corresponds to blob
	TextLength	number of characters in blob

Note:

Globals:
imagefile Base filename of the page being learned
FontName Name of font currently being trained on

Returns:

none

Note:

Exceptions: none

Date:

7/28/89, DSJ, Created.

Definition at line 97 of file blobclass.cpp.

References chartoname(), cprintf(), Efopen(), EnterLearnMode, ExtractBlobFeatures(), FontName, FreeCharDescription(), GetLineStatsFromRow(), imagefile, MAXCHARNAME, MAXFILENAME, NULL, TRAIN_SUFFIX, and WriteCharDescription().

Referenced by tess_training_tester().

{
  static FILE *FeatureFile = NULL;
  char Filename[MAXFILENAME];
  char CharName[MAXCHARNAME];
  CHAR_DESC CharDesc;
  LINE_STATS LineStats;

  EnterLearnMode;

  // throw out blobs which do not represent only one character
  if (TextLength != 1)
    return;

  GetLineStatsFromRow(Row, &LineStats); 

  CharDesc = ExtractBlobFeatures (Blob, &LineStats);

  // if a feature file is not yet open, open it
  // the name of the file is the name of the image plus TRAIN_SUFFIX
  if (FeatureFile == NULL) {
    strcpy(Filename, imagefile); 
    strcat(Filename, TRAIN_SUFFIX); 
    FeatureFile = Efopen (Filename, "w");

    cprintf ("TRAINING ... Font name = %s.\n", FontName);
  }

  // get the name of the character for this blob
  chartoname (CharName, BlobText[0], "");

  // label the features with a class name and font name
  fprintf (FeatureFile, "\n%s %s ", FontName, CharName);

  // write micro-features to file and clean up
  WriteCharDescription(FeatureFile, CharDesc); 
  FreeCharDescription(CharDesc); 

}                                // LearnBlob

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Variable Documentation

const char* FontName = FONT_NAME [static]

parameters used to control the training process

Definition at line 48 of file blobclass.cpp.

Referenced by InitBlobClassifierVars(), LearnBlob(), ReadTrainingSamples(), and WriteClusteredTrainingSamples().

char imagefile[]

Image file name

Definition at line 53 of file globals.cpp.

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