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/home/slang/XVision2/src/Segmentation/XVSegmentation.h

// *** BEGIN_XVISION2_COPYRIGHT_NOTICE ***
// *** END_XVISION2_COPYRIGHT_NOTICE ***

// 
// XVSegmentation.h
//
// Samuel Lang
// 9.21.00
//

#ifndef _XVSEGMENTATION_H_
#define _XVSEGMENTATION_H_

#include <XVImageBase.h>
#include <XVImageScalar.h>
#include <XVBlobs.h>
#include <vector>
#include <math.h>

#define NULL_VALUE ~0

#define MAX_REGIONS      2000
#define DEFAULT_PADDING  40
#define M_TO_S_RATIO     1.1

class XVSegException : public XVException { public:  
  XVSegException() : XVException(){}
  XVSegException(char * str) : XVException(str) {} }; 

template <class T, class Y>
class LookupTable{

 protected:

  Y * table;

 public:

  LookupTable() : table(NULL) {}

  virtual ~LookupTable(){ delete [] table; }

  virtual Y computePixelValue(T pixel) = 0;
  
  virtual void buildTable() = 0;
  
  virtual Y & operator [] (T) = 0;
};

template <class T, class Y>
class XVSegmentation{

  typedef T PIXELINTYPE;
  typedef Y PIXELOUTTYPE;

 protected:
  
  int             histSize;
  int             histArraySize;
  u_int *         histogram;
  LookupTable<T,Y> * lookup;
  
public:

  bool (*SEGFUNC) (const Y);
  
  ~XVSegmentation();

  virtual void update(const XVImageBase<T> &) = 0;
  
  virtual void segment(const XVImageBase<T> &, XVImageBase<Y> &);
  virtual void findCentroid(const XVImageScalar<Y> &, XVPosition &, 
                   int, bool (*pf) (const Y) = NULL);
  virtual XVRectangleBlob & findBoundingBox(const XVImageBase<T> &, 
                            XVRectangleBlob &,  
                            bool (*pf) (const Y) = NULL);
  virtual void regionGrow(const XVImageScalar<Y> &, vector<XVRectangleBlob> &, 
                 bool (*pf) (const Y) = NULL, 
                 int padding = DEFAULT_PADDING,
                 int maxRegions = MAX_REGIONS,
                 float ratio    = M_TO_S_RATIO);

  void setCheck(bool (*pf) (const Y)){ this->SEGFUNC = pf; }

  u_int * getHistogram(){ return histogram; }
};

template <class T, class Y>
class ScalarTable;

template <class T, class Y>
class RGBTable;

#include <XVSegmentation.icc>

#endif

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