classify/blobclass.cpp

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/* =================
      Include Files and Type Defines
 ==================== */
#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>

#define MAXFILENAME             80
#define MAXMATCHES              10

// define default font name to be used in training
#define FONT_NAME       "UnknownFont"

/* =================
        Global Data Definitions and Declarations
 ==================== */
extern char imagefile[];

static const char *FontName = FONT_NAME;

/* =================
            Public Code
 ==================== */
/* =============================== */
void InitBlobClassifierVars() { 
  VALUE dummy;

  string_variable (FontName, "FontName", FONT_NAME);

}                                /* InitBlobClassifierVars */


/* =============================== */
#define MAXFILENAME     80

#define MAXCHARNAME     20

#define MAXFONTNAME     20

#define TRAIN_SUFFIX    ".tr"

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