org.deegree.commons.utils
Class PixelCounter

java.lang.Object
  org.deegree.commons.utils.PixelCounter

public class PixelCounter
extends Object

PixelCounter

Version:

$Revision: 24629 $, $Date: 2010-05-27 18:05:25 +0200 (Thu, 27 May 2010) $

Author:

Andreas Schmitz, last edited by: $Author: rbezema $

Constructor Summary

PixelCounter()

Method Summary

static BigInteger[]	countPixels(BufferedImage img)
static double	similarityLevel(BufferedImage img, BigInteger[] vals)

Methods inherited from class java.lang.Object

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

Constructor Detail

PixelCounter

public PixelCounter()

Method Detail

similarityLevel

public static double similarityLevel(BufferedImage img,
                                     BigInteger[] vals)

Parameters:

img -

vals -

Returns:

a value between 0 and 1: for each color (ARGB) add (1 - (abs(origVal - newVal)) / (origVal + newVal)) / 4, values are determined by summing x * y * valueAtXY(x, y)

countPixels

public static BigInteger[] countPixels(BufferedImage img)

Parameters:

img -

Returns:

the ARGB pixel values: sum over x * y * valueAtXY(x, y)