org.openimaj.image.saliency

Class YehSaliency

java.lang.Object

org.openimaj.image.saliency.YehSaliency

All Implemented Interfaces:

org.openimaj.image.analyser.ImageAnalyser<org.openimaj.image.MBFImage>, SaliencyMapGenerator<org.openimaj.image.MBFImage>

@Reference(type=Inproceedings,
           author="Che-Hua Yeh, Yuan-Chen Ho, Brian A. Barsky, Ming Ouhyoung",
           title="Personalized Photograph Ranking and Selection System",
           year="2010",
           booktitle="Proceedings of ACM Multimedia",
           pages={"211","220"},
           month="October",
           customData={"location","Florence, Italy"})
public class YehSaliency
extends Object
implements SaliencyMapGenerator<org.openimaj.image.MBFImage>

Implementation of the region-based saliency algorithm described in: Che-Hua Yeh, Yuan-Chen Ho, Brian A. Barsky, Ming Ouhyoung. Personalized photograph ranking and selection system. In Proceedings of ACM Multimedia'2010. pp.211~220 This algorithm is used to create a Rule-of-Thirds feature for images. The algorithm uses the AchantaSaliency approach to get the saliency values for individual pixels. Regions are segmented from the image using a FelzenszwalbHuttenlocherSegmenter. Saliency values are generated for each region by averaging the saliency values of the pixels within the region.

Author:

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

Field Summary

Fields

Modifier and Type	Field and Description
protected gnu.trove.map.hash.TObjectFloatHashMap<org.openimaj.image.pixel.ConnectedComponent>	componentMap
protected org.openimaj.image.FImage	map

Constructor Summary

Constructors

Constructor and Description
YehSaliency() Construct with default settings for the AchantaSaliency and FelzenszwalbHuttenlocherSegmenter.
YehSaliency(float saliencySigma, float segmenterSigma, float k, int minSize) Construct with custom parameters.

Method Summary

Modifier and Type	Method and Description
void	analyseImage(org.openimaj.image.MBFImage image)
gnu.trove.map.hash.TObjectFloatHashMap<org.openimaj.image.pixel.ConnectedComponent>	getSaliencyComponents() Get a map of component->saliency for all the components in the image
org.openimaj.image.FImage	getSaliencyMap() Get the generated saliency map

Methods inherited from class java.lang.Object

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

Field Detail

map

protected org.openimaj.image.FImage map

componentMap

protected gnu.trove.map.hash.TObjectFloatHashMap<org.openimaj.image.pixel.ConnectedComponent> componentMap

Constructor Detail

YehSaliency

public YehSaliency()

Construct with default settings for the AchantaSaliency and FelzenszwalbHuttenlocherSegmenter.

YehSaliency

public YehSaliency(float saliencySigma,
                   float segmenterSigma,
                   float k,
                   int minSize)

Construct with custom parameters.

Parameters:

saliencySigma - smoothing for the AchantaSaliency class

segmenterSigma - smoothing for FelzenszwalbHuttenlocherSegmenter.

k - k value for FelzenszwalbHuttenlocherSegmenter.

minSize - minimum region size for FelzenszwalbHuttenlocherSegmenter.

Method Detail

analyseImage

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

Specified by:

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

getSaliencyMap

public org.openimaj.image.FImage getSaliencyMap()

Description copied from interface: SaliencyMapGenerator

Get the generated saliency map

Specified by:

getSaliencyMap in interface SaliencyMapGenerator<org.openimaj.image.MBFImage>

Returns:

the saliency map

getSaliencyComponents

public gnu.trove.map.hash.TObjectFloatHashMap<org.openimaj.image.pixel.ConnectedComponent> getSaliencyComponents()

Get a map of component->saliency for all the components in the image

Returns:

component->saliency map