net.semanticmetadata.lire.imageanalysis.features.local.shapecontext

类 ShapeContextExtractor

java.lang.Object

net.semanticmetadata.lire.imageanalysis.features.local.shapecontext.ShapeContextExtractor

所有已实现的接口:

Extractor, LocalFeatureExtractor

public class ShapeContextExtractor
extends java.lang.Object
implements LocalFeatureExtractor

Created by Lukas Knoch on 16.09.15. Shape Context implemented according to: S. Belongie, J. Malik, and J. Puzicha, “Shape Matching and Object Recognition Using Shape Contexts,” IEEE Trans. Pattern Analysis and Machine Intelligence, vol. 24, no. 4, pp. 509-522, Apr. 2002 https://www.cs.berkeley.edu/~malik/papers/BMP-shape.pdf

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	ShapeContextExtractor.Point
static class	ShapeContextExtractor.Utils

字段概要

字段

限定符和类型	字段和说明
static int	SAMPLE_POINTS

构造器概要

构造器

构造器和说明
ShapeContextExtractor()

方法概要

限定符和类型	方法和说明
static java.util.LinkedList<ShapeContext>	createHistogram(ShapeContextExtractor.Point[] points, int angularBins, int radialBins, float innerRadius, float outerRadius)
static <T> java.util.List<T>	distributedSample(java.util.List<T> items, int m) Get every nth point, where n = items.size()/m
void	extract(java.awt.image.BufferedImage image) Extracts the feature vector from a BufferedImage.
java.lang.Class<? extends LocalFeature>	getClassOfFeatures()
static java.util.List<ShapeContextExtractor.Point>	getEdgePoints(java.awt.image.BufferedImage image, int samplePoints) selects edge points from image.
java.util.List<? extends LocalFeature>	getFeatures()
static java.awt.image.BufferedImage	getSampledPointsImage(java.awt.image.BufferedImage image) Method for debug use only, generates an image of the sampled points
static <T> java.util.Set<T>	randomSample(java.util.List<T> items, int m) get a random sample from the given points

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

SAMPLE_POINTS

public static final int SAMPLE_POINTS

另请参阅:

常量字段值

构造器详细资料

ShapeContextExtractor

public ShapeContextExtractor()

方法详细资料

createHistogram

public static java.util.LinkedList<ShapeContext> createHistogram(ShapeContextExtractor.Point[] points,
                                                                 int angularBins,
                                                                 int radialBins,
                                                                 float innerRadius,
                                                                 float outerRadius)

getFeatures

public java.util.List<? extends LocalFeature> getFeatures()

指定者:

getFeatures 在接口中 LocalFeatureExtractor

getClassOfFeatures

public java.lang.Class<? extends LocalFeature> getClassOfFeatures()

指定者:

getClassOfFeatures 在接口中 LocalFeatureExtractor

extract

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

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:

image -

getEdgePoints

public static java.util.List<ShapeContextExtractor.Point> getEdgePoints(java.awt.image.BufferedImage image,
                                                                        int samplePoints)

selects edge points from image.

参数:

image -

返回:

getSampledPointsImage

public static java.awt.image.BufferedImage getSampledPointsImage(java.awt.image.BufferedImage image)

Method for debug use only, generates an image of the sampled points

参数:

image -

返回:

randomSample

public static <T> java.util.Set<T> randomSample(java.util.List<T> items,
                                                int m)

get a random sample from the given points

类型参数:

T -

参数:

items -

m -

返回:

distributedSample

public static <T> java.util.List<T> distributedSample(java.util.List<T> items,
                                                      int m)

Get every nth point, where n = items.size()/m

类型参数:

T -

参数:

items -

m -

返回: