classify/speckle.cpp

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/* =================
          Include Files and Type Defines
 ==================== */
#include "speckle.h"
#include "debug.h"
#include "blobs.h"

/* =================
 Global Data Definitions and Declarations
 ==================== */

// define control knobs for adjusting definition of speckle
make_float_var (MaxLargeSpeckleSize, 0.30, MakeMaxLargeSpeckleSize,
16, 2, SetMaxLargeSpeckleSize, "Max Large Speckle Size ...");
make_float_var (SmallSpecklePenalty, 10.0, MakeSmallSpecklePenalty,
16, 3, SetSmallSpecklePenalty, "Small Speckle Penalty ...");
make_float_var (LargeSpecklePenalty, 10.0, MakeLargeSpecklePenalty,
16, 4, SetLargeSpecklePenalty, "Large Speckle Penalty ...");
make_float_var (SmallSpeckleCertainty, -1.0, MakeSmallSpeckleCertainty,
16, 5, SetSmallSpeckleCertainty, "Small Speckle Certainty ...");
/* =================
     Public Code
 ==================== */
LIST AddLargeSpeckleTo(LIST Choices) { 
  LIST WorstChoice;

  /* if there are no other choices, use the small speckle penalty plus
     the large speckle penalty */
  if (Choices == NIL)
    return (append_choice (NIL, "", SmallSpecklePenalty + LargeSpecklePenalty,
      SmallSpeckleCertainty, -1));

  /* if there are other choices,  add a null choice that is slightly worse
     than the worst choice so far */
  WorstChoice = last (Choices);
  return (append_choice (Choices, "",
    best_probability (WorstChoice) + LargeSpecklePenalty,
    best_certainty (WorstChoice), -1));

}                                /* AddLargeSpeckleTo */


/* =============================== */
void InitSpeckleVars() { 
  MakeMaxLargeSpeckleSize(); 
  MakeSmallSpecklePenalty(); 
  MakeLargeSpecklePenalty(); 
  MakeSmallSpeckleCertainty(); 
#ifdef TEXT_VERBOSE
  // gets a 'k', see ccmain/tesseractmain.dox
  cprintf("k");
#endif
}                                /* InitSpeckleVars */


/* =============================== */
BOOL8 LargeSpeckle(TBLOB *Blob, TEXTROW *Row) { 
  FLOAT32 SpeckleSize;
  TPOINT TopLeft;
  TPOINT BottomRight;

  SpeckleSize = RowHeight (Row) * MaxLargeSpeckleSize;
  blob_bounding_box(Blob, &TopLeft, &BottomRight); 

  if (TopLeft.y - BottomRight.y < SpeckleSize &&
    BottomRight.x - TopLeft.x < SpeckleSize)
    return (TRUE);
  else
    return (FALSE);
}                                /* LargeSpeckle */

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