org.openimaj.image.feature.global

Class Sharpness

java.lang.Object

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

org.openimaj.image.feature.global.Sharpness

All Implemented Interfaces:

FeatureVectorProvider<DoubleFV>, ImageAnalyser<FImage>, MaskedObject<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 Sharpness
extends AbstractMaskedObject<FImage>
implements ImageAnalyser<FImage>, FeatureVectorProvider<DoubleFV>

Sharpness measures the clarity and level of detail of an image. This class measures the 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	sharpness

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

mask

Constructor Summary

Constructors

Constructor and Description
Sharpness() Construct with no mask set
Sharpness(FImage mask) Construct with a mask.

Method Summary

Modifier and Type	Method and Description
void	analyseImage(FImage image) Analyse an image.
DoubleFV	getFeatureVector() Get the FeatureVector associated with this object.
double	getSharpness() Get the 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

sharpness

protected double sharpness

Constructor Detail

Sharpness

public Sharpness()

Construct with no mask set

Sharpness

public Sharpness(FImage mask)

Construct with a mask.

Parameters:

mask - the mask.

Method Detail

getFeatureVector

public DoubleFV getFeatureVector()

Description copied from interface: FeatureVectorProvider

Get the FeatureVector associated with this object.

Specified by:

getFeatureVector in interface FeatureVectorProvider<DoubleFV>

Returns:

the feature vector.

analyseImage

public void analyseImage(FImage image)

Description copied from interface: ImageAnalyser

Analyse an image.

Specified by:

analyseImage in interface ImageAnalyser<FImage>

Parameters:

image - The image to process in place.

getSharpness

public double getSharpness()

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

Returns:

the sharpness value