org.openimaj.image.model.patch

Class PatchClassificationModel<Q,T extends org.openimaj.image.Image<Q,T>>

java.lang.Object

org.openimaj.image.model.patch.PatchClassificationModel<Q,T>

Type Parameters:

Q - Type of pixel

T - Type of Image

All Implemented Interfaces:

Serializable, Cloneable, ImageClassificationModel<T>, org.openimaj.math.model.EstimatableModel<T,org.openimaj.image.FImage>, org.openimaj.math.model.Model<T,org.openimaj.image.FImage>

Direct Known Subclasses:

MBFPatchClassificationModel

public abstract class PatchClassificationModel<Q,T extends org.openimaj.image.Image<Q,T>>
extends Object
implements ImageClassificationModel<T>

An ImageClassificationModel based on the idea of determining the probability of a class of a pixel given the local patch of pixels surrounding the pixel in question. A sliding window of a given size is moved across the image (with overlap), and the contents of the window are analysed to determine the probability belonging to the pixel at the centre of the window.

Author:

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

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int	patchHeight
protected int	patchWidth

Constructor Summary

Constructors

Constructor and Description
PatchClassificationModel(int patchWidth, int patchHeight) Construct with the given dimensions for the sampling patch.

Method Summary

Modifier and Type	Method and Description
org.openimaj.image.FImage	classifyImage(T im) Classify the given image and return the corresponding probability map
abstract float	classifyPatch(T patch) Classify a patch, returning the probability of the central pixel belonging to the class.
abstract PatchClassificationModel<Q,T>	clone()
boolean	estimate(List<? extends org.openimaj.util.pair.IndependentPair<T,org.openimaj.image.FImage>> data)
protected abstract T[]	getArray(int length)
int	numItemsToEstimate()
org.openimaj.image.FImage	predict(T data)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.openimaj.image.model.ImageClassificationModel

learnModel

Field Detail

patchHeight

protected int patchHeight

patchWidth

protected int patchWidth

Constructor Detail

PatchClassificationModel

public PatchClassificationModel(int patchWidth,
                                int patchHeight)

Construct with the given dimensions for the sampling patch.

Parameters:

patchWidth - the width of the sampling patch

patchHeight - the height of the sampling patch

Method Detail

classifyPatch

public abstract float classifyPatch(T patch)

Classify a patch, returning the probability of the central pixel belonging to the class.

Parameters:

patch - the patch.

Returns:

the probability of the central pixel belonging to the class.

classifyImage

public org.openimaj.image.FImage classifyImage(T im)

Description copied from interface: ImageClassificationModel

Classify the given image and return the corresponding probability map

Specified by:

classifyImage in interface ImageClassificationModel<T extends org.openimaj.image.Image<Q,T>>

Parameters:

im - the image to classify

Returns:

the probability map

clone

public abstract PatchClassificationModel<Q,T> clone()

Specified by:

clone in interface ImageClassificationModel<T extends org.openimaj.image.Image<Q,T>>

Specified by:

clone in interface org.openimaj.math.model.EstimatableModel<T extends org.openimaj.image.Image<Q,T>,org.openimaj.image.FImage>

Overrides:

clone in class Object

getArray

protected abstract T[] getArray(int length)

estimate

public boolean estimate(List<? extends org.openimaj.util.pair.IndependentPair<T,org.openimaj.image.FImage>> data)

Specified by:

estimate in interface org.openimaj.math.model.EstimatableModel<T extends org.openimaj.image.Image<Q,T>,org.openimaj.image.FImage>

numItemsToEstimate

public int numItemsToEstimate()

Specified by:

numItemsToEstimate in interface org.openimaj.math.model.EstimatableModel<T extends org.openimaj.image.Image<Q,T>,org.openimaj.image.FImage>

predict

public org.openimaj.image.FImage predict(T data)

Specified by:

predict in interface org.openimaj.math.model.Model<T extends org.openimaj.image.Image<Q,T>,org.openimaj.image.FImage>