ossimMitchellFilter Class Reference

#include <ossimFilter.h>

Inheritance diagram for ossimMitchellFilter:

Public Member Functions
	ossimMitchellFilter ()
virtual	~ossimMitchellFilter ()
double	filter (double x, double) const
virtual double	getSupport () const
Public Member Functions inherited from ossimFilter
	ossimFilter ()
virtual	~ossimFilter ()
virtual NEWMAT::Matrix *	newMatrix (long width=3, double middle=0.0, double scale=0.0) const
virtual void	createMatrix (NEWMAT::Matrix &m, long width=3, double middle=0.0, double scale=0.0) const
virtual NEWMAT::RowVector *	newVector (long width, double middle=0.0, double scale=1.0) const

Additional Inherited Members
Static Public Member Functions inherited from ossimFilter
static double	Sinc (double x)
static double	Sinc (double x, double)

Detailed Description

Definition at line 427 of file ossimFilter.h.

Constructor & Destructor Documentation

ossimMitchellFilter()

ossimMitchellFilter::ossimMitchellFilter ( )

inline

Definition at line 430 of file ossimFilter.h.

{}

~ossimMitchellFilter()

virtual ossimMitchellFilter::~ossimMitchellFilter ( )

inlinevirtual

Definition at line 431 of file ossimFilter.h.

{}

Member Function Documentation

filter()

double ossimMitchellFilter::filter ( double  x, double    ) const

inlinevirtual

Implements ossimFilter.

Definition at line 432 of file ossimFilter.h.

References MITCHELL_P0, MITCHELL_P2, MITCHELL_P3, MITCHELL_Q0, MITCHELL_Q1, MITCHELL_Q2, MITCHELL_Q3, and x.

      {
#define MITCHELL_B   (1.0/3.0)
#define MITCHELL_C   (1.0/3.0)
#define MITCHELL_P0  ((  6.0- 2.0*MITCHELL_B       )/6.0)
#define MITCHELL_P2  ((-18.0+12.0*MITCHELL_B+ 6.0*MITCHELL_C)/6.0)
#define MITCHELL_P3  (( 12.0- 9.0*MITCHELL_B- 6.0*MITCHELL_C)/6.0)
#define MITCHELL_Q0  ((       8.0*MITCHELL_B+24.0*MITCHELL_C)/6.0)
#define MITCHELL_Q1  ((     -12.0*MITCHELL_B-48.0*MITCHELL_C)/6.0)
#define MITCHELL_Q2  ((       6.0*MITCHELL_B+30.0*MITCHELL_C)/6.0)
#define MITCHELL_Q3  ((     - 1.0*MITCHELL_B- 6.0*MITCHELL_C)/6.0)
         
         if (x < -2.0)
            return(0.0);
         if (x < -1.0)
            return(MITCHELL_Q0-x*(MITCHELL_Q1-x*(MITCHELL_Q2-x*MITCHELL_Q3)));
         if (x < 0.0)
            return(MITCHELL_P0+x*x*(MITCHELL_P2-x*MITCHELL_P3));
         if (x < 1.0)
            return(MITCHELL_P0+x*x*(MITCHELL_P2+x*MITCHELL_P3));
         if (x < 2.0)
            return(MITCHELL_Q0+x*(MITCHELL_Q1+x*(MITCHELL_Q2+x*MITCHELL_Q3)));
         return(0.0);
      }

getSupport()

virtual double ossimMitchellFilter::getSupport ( ) const

inlinevirtual

Implements ossimFilter.

Definition at line 456 of file ossimFilter.h.

      {
         return 2.0;
      }

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The documentation for this class was generated from the following file:

• ossimFilter.h