org.openimaj.image.feature.global

Class HueStats

java.lang.Object

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

org.openimaj.image.feature.global.HueStats

All Implemented Interfaces:

FeatureVectorProvider<DoubleFV>, ImageAnalyser<MBFImage>, MaskedObject<FImage>

public class HueStats
extends AbstractMaskedObject<FImage>
implements ImageAnalyser<MBFImage>, FeatureVectorProvider<DoubleFV>

A two-valued summary representing mean hue (in radians) and variance of hue respectively. Additionally, can produce a classification for black & white versus colour versus sepia images based on hand-coded (and not well tested) parameters.

Author:

Jonathon Hare (jsh2@ecs.soton.ac.uk)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	HueStats.ToneAttr Tonal attributes for images based on the mean hue and variance.

Field Summary

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

mask

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
void	analyseImage(MBFImage image) Analyse an image.
DoubleFV	getFeatureVector() Get the FeatureVector associated with this object.
double	getHueVariance() Get the variance in hue value.
double	getMeanHue() Get the mean hue value.
HueStats.ToneAttr	getTone() Estimate the tone of the image.

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

Constructor Detail

HueStats

public HueStats()

Construct with no mask set

HueStats

public HueStats(FImage mask)

Construct with a mask.

Parameters:

mask - the mask.

Method Detail

analyseImage

public void analyseImage(MBFImage image)

Description copied from interface: ImageAnalyser

Analyse an image.

Specified by:

analyseImage in interface ImageAnalyser<MBFImage>

Parameters:

image - The image to process in place.

getMeanHue

public double getMeanHue()

Get the mean hue value.

Returns:

the mean hue value over all pixels.

getHueVariance

public double getHueVariance()

Get the variance in hue value.

Returns:

the variance of hue over all pixels.

getTone

public HueStats.ToneAttr getTone()

Estimate the tone of the image.

Returns:

the estimated tone

See Also:

HueStats.ToneAttr.getAttr(double, double)

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.