net.semanticmetadata.lire.imageanalysis.features.global

类 JpegCoefficientHistogram

java.lang.Object

net.semanticmetadata.lire.imageanalysis.features.global.JpegCoefficientHistogram

所有已实现的接口:

Extractor, FeatureVector, GlobalFeature, LireFeature

public class JpegCoefficientHistogram
extends java.lang.Object
implements GlobalFeature

嵌套类概要

嵌套类

限定符和类型	类和说明
class	JpegCoefficientHistogram.DctComparator
protected class	JpegCoefficientHistogram.DctPoint

字段概要

字段

限定符和类型	字段和说明
protected int	BLOCK_SIZE
protected int[]	descriptorValues
protected double[][][][]	transform

构造器概要

构造器

构造器和说明
JpegCoefficientHistogram()

方法概要

限定符和类型	方法和说明
protected double[][][][]	createTransformArray()
void	extract(java.awt.image.BufferedImage bimg) Extracts the feature vector from a BufferedImage.
byte[]	getByteArrayRepresentation() Returns a compact byte[] based representation of the feature vector.
protected void	getComponentHistogram(int[][][] yuvImage, int width, int height, int component, int[] descriptorBytes)
double	getDistance(LireFeature vd) The distance function for this type of feature
java.lang.String	getFeatureName() Gives a descriptive name of the feature, i.e. a name to show up in benchmarks, menus, UIs, etc.
double[]	getFeatureVector() Convenience method to get the feature vector as double[] array.
java.lang.String	getFieldName() Returns the preferred field name for indexing.
protected int[][][]	getYUVImage(java.awt.image.WritableRaster raster, int newWidth, int newHeight, int shift)
void	setByteArrayRepresentation(byte[] in) Sets the feature vector values based on the byte[] data.
void	setByteArrayRepresentation(byte[] in, int offset, int length) Sets the feature vector values based on the byte[] data.

从类继承的方法 java.lang.Object

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

字段详细资料

descriptorValues

protected int[] descriptorValues

BLOCK_SIZE

protected final int BLOCK_SIZE

另请参阅:

常量字段值

transform

protected double[][][][] transform

构造器详细资料

JpegCoefficientHistogram

public JpegCoefficientHistogram()

方法详细资料

extract

public void extract(java.awt.image.BufferedImage bimg)

从接口复制的说明: Extractor

Extracts the feature vector from a BufferedImage.

指定者:

extract 在接口中 Extractor

参数:

bimg - the source image

getByteArrayRepresentation

public byte[] getByteArrayRepresentation()

从接口复制的说明: LireFeature

Returns a compact byte[] based representation of the feature vector.

指定者:

getByteArrayRepresentation 在接口中 LireFeature

返回:

a compact byte[] array containing the feature vector.

另请参阅:

LireFeature.setByteArrayRepresentation(byte[])

setByteArrayRepresentation

public void setByteArrayRepresentation(byte[] in)

从接口复制的说明: LireFeature

Sets the feature vector values based on the byte[] data. Use LireFeature.getByteArrayRepresentation() to generate a compatible byte[] array.

指定者:

setByteArrayRepresentation 在接口中 LireFeature

参数:

in - the byte[] data.

另请参阅:

LireFeature.getByteArrayRepresentation()

setByteArrayRepresentation

public void setByteArrayRepresentation(byte[] in,
                                       int offset,
                                       int length)

从接口复制的说明: LireFeature

Sets the feature vector values based on the byte[] data. Use LireFeature.getByteArrayRepresentation() to generate a compatible byte[] array.

指定者:

setByteArrayRepresentation 在接口中 LireFeature

参数:

in - the byte[] array containing the data.

offset - the offset, i.e. where the feature vector starts.

length - the length of the data representing the feature vector.

另请参阅:

LireFeature.getByteArrayRepresentation()

getFeatureVector

public double[] getFeatureVector()

从接口复制的说明: FeatureVector

Convenience method to get the feature vector as double[] array. This method is used by classifiers, etc.

指定者:

getFeatureVector 在接口中 FeatureVector

返回:

the feature vector as a double[] array.

getComponentHistogram

protected void getComponentHistogram(int[][][] yuvImage,
                                     int width,
                                     int height,
                                     int component,
                                     int[] descriptorBytes)

getDistance

public double getDistance(LireFeature vd)

从接口复制的说明: LireFeature

The distance function for this type of feature

指定者:

getDistance 在接口中 LireFeature

参数:

vd - the feature vector to compare the current instance to.

返回:

the distance (or dissimilarity) between the instance and the parameter.

getYUVImage

protected int[][][] getYUVImage(java.awt.image.WritableRaster raster,
                                int newWidth,
                                int newHeight,
                                int shift)

createTransformArray

protected double[][][][] createTransformArray()

getFeatureName

public java.lang.String getFeatureName()

从接口复制的说明: LireFeature

Gives a descriptive name of the feature, i.e. a name to show up in benchmarks, menus, UIs, etc.

指定者:

getFeatureName 在接口中 LireFeature

返回:

the name of the feature.

getFieldName

public java.lang.String getFieldName()

从接口复制的说明: LireFeature

Returns the preferred field name for indexing.

指定者:

getFieldName 在接口中 LireFeature

返回:

the field name preferred for indexing in a Lucene index.