itpp::Scalar_Quantizer Class Reference
[Source Coding Routines]

Class for vector quantization. More...

#include <vq.h>

List of all members.

Public Member Functions
	Scalar_Quantizer ()
	Default constructor.
	Scalar_Quantizer (const char *Name)
	Create a VQ from a VQ file.
int	encode (double x) const
	Encode.
ivec	encode (const vec &x) const
	Encode the input vector.
double	decode (int Index) const
	Decode the index.
vec	decode (const ivec &Index) const
	Decode the indices.
double	Q (double x) const
	Quantize.
vec	Q (const vec &x) const
	Quantize the input vector.
double	operator() (double x) const
	Quantize.
vec	operator() (const vec &x) const
	Quantize the input vector.
void	set_levels (const vec &L)
	Initialize the codebook by a matrix.
vec	get_levels () const
	Returns the codebook.
int	size () const
	Returns the size (number of codevectors) of the VQ.
Protected Attributes
vec	Levels
	The vector containing the code book.
double	LatestDist
	The distortion at the latest time a vector was encoded.

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Detailed Description

Class for vector quantization.

The following code illustrates how the quantizer can be initialized from a file and used to quantize a random vector.

  Scalar_Quantizer Quantizer;
  double    x,y;
  int     i;

  Quantizer.load("random.sq");
  x=randn();
  i=Quantizer.encode(x);
  y=Quantizer.decode(i);

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

• vq.h