cbr.util
Class Quantizer

java.lang.Object
  cbr.util.Quantizer

public class Quantizer

extends Object

This class quantises the RGB888 pixels of an image into RGB222 pixels packed into a single byte per pixel. The two most significant bits per color band are taken.

Version:

"$Id: Quantizer.java 1913 2007-08-08 02:41:53Z jpeters $"

Author:

Volker Roth

Constructor Summary

private

Quantizer() No-one may instantiate this class.

Method Summary

static byte[]

quantise(int[] px) This method does the quantisation on an array of integers.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Quantizer

private Quantizer()

No-one may instantiate this class. Use the static methods instead.

Method Detail

quantise

public static byte[] quantise(int[] px)

This method does the quantisation on an array of integers. Each integer contains one pixel in the RGB888 format. Any Alpha channels information is ignored. The return format consists of a byte array. Each byte contains a quantised pixel in the RGB222 format. The 6 least significant bits per byte are used.