org.jemmy.image.pixel

Class PeakSignalNoiseRatioComparator

java.lang.Object

org.jemmy.image.pixel.PeakSignalNoiseRatioComparator

All Implemented Interfaces:

RasterComparator

public class PeakSignalNoiseRatioComparator
extends Object
implements RasterComparator

Comparator, that implements peak signal to noise ratio, popular and reliable method of measuring image compression quality or image distortion. PSNR is used to measure the quality of reconstruction of lossy compression codecs. The signal is the reference (golden) image, and the noise is actual image. Higher PSNR indicates lesser difference between images for the most cases. Comparator is intended to compare images with large amount of very minor differences and one has to be extremely careful with the range of validity of this metric; it is only conclusively valid when it is used to compare results from the same content.

Author:

andrey.rusakov@oracle.com

Field Summary

Fields

Modifier and Type	Field and Description
static String	OUTPUT

Constructor Summary

Constructors

Constructor and Description
PeakSignalNoiseRatioComparator(double minRatio)

Method Summary

Modifier and Type	Method and Description
boolean	compare(Raster image1, Raster image2)
String	getID()

Methods inherited from class java.lang.Object

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

Field Detail

OUTPUT

public static final String OUTPUT

Constructor Detail

PeakSignalNoiseRatioComparator

public PeakSignalNoiseRatioComparator(double minRatio)

Method Detail

compare

public boolean compare(Raster image1,
                       Raster image2)

Specified by:

compare in interface RasterComparator

getID

public String getID()

Specified by:

getID in interface RasterComparator