org.openimaj.image.feature.global

Class SharpnessVariation

java.lang.Object

org.openimaj.image.mask.AbstractMaskedObject<org.openimaj.image.FImage>

org.openimaj.image.feature.global.SharpnessVariation

All Implemented Interfaces:

FeatureVectorProvider<DoubleFV>, org.openimaj.image.analyser.ImageAnalyser<org.openimaj.image.FImage>, org.openimaj.image.mask.MaskedObject<org.openimaj.image.FImage>

@Reference(type=Inproceedings,
           author={"Jose San Pedro","Stefan Siersdorfer"},
           title="Ranking and Classifying Attractiveness of Photos in Folksonomies",
           year="2009",
           booktitle="18th International World Wide Web Conference",
           pages={"771","","771"},
           url="http://www2009.eprints.org/78/",
           month="April")
public class SharpnessVariation
extends org.openimaj.image.mask.AbstractMaskedObject<org.openimaj.image.FImage>
implements org.openimaj.image.analyser.ImageAnalyser<org.openimaj.image.FImage>, FeatureVectorProvider<DoubleFV>

Sharpness measures the clarity and level of detail of an image. This class measures the variation in sharpness of an image as a function of its Laplacian, normalized by the local average luminance in the surroundings of each pixel.

Author:

Jonathon Hare

Field Summary

Fields

Modifier and Type	Field and Description
protected double	sharpnessVariation

Fields inherited from class org.openimaj.image.mask.AbstractMaskedObject

mask

Constructor Summary

Constructors

Constructor and Description
SharpnessVariation() Construct with no mask set
SharpnessVariation(org.openimaj.image.FImage mask) Construct with a mask.

Method Summary

Modifier and Type	Method and Description
void	analyseImage(org.openimaj.image.FImage image)
DoubleFV	getFeatureVector()
double	getSharpnessVariation() Get the variation in sharpness of the last image processed with analyseImage(FImage).

Methods inherited from class org.openimaj.image.mask.AbstractMaskedObject

getMask, setMask

Methods inherited from class java.lang.Object

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

Field Detail

sharpnessVariation

protected double sharpnessVariation

Constructor Detail

SharpnessVariation

public SharpnessVariation()

Construct with no mask set

SharpnessVariation

public SharpnessVariation(org.openimaj.image.FImage mask)

Construct with a mask.

Parameters:

mask - the mask.

Method Detail

getFeatureVector

public DoubleFV getFeatureVector()

Specified by:

getFeatureVector in interface FeatureVectorProvider<DoubleFV>

analyseImage

public void analyseImage(org.openimaj.image.FImage image)

Specified by:

analyseImage in interface org.openimaj.image.analyser.ImageAnalyser<org.openimaj.image.FImage>

getSharpnessVariation

public double getSharpnessVariation()

Get the variation in sharpness of the last image processed with analyseImage(FImage).

Returns:

the sharpness variation value