SiftFeature (LIRE API)

java.lang.Object
- net.semanticmetadata.lire.imageanalysis.features.local.sift.SiftFeature

所有已实现的接口:

java.io.Serializable, java.lang.Comparable<SiftFeature>, FeatureVector, LireFeature, LocalFeature
```
public class SiftFeature
extends java.lang.Object
implements java.lang.Comparable<SiftFeature>, java.io.Serializable, LocalFeature
```
SIFT feature container

另请参阅:

序列化表格

字段概要

字段
限定符和类型字段和说明

float[] location

float orientation

float scale

字段
限定符和类型	字段和说明
`float[]`	`location`
`float`	`orientation`
`float`	`scale`

构造器概要

构造器
构造器和说明

SiftFeature()
Dummy constructor for Serialization to work properly.

SiftFeature(float s, float o, float[] l, float[] d)

构造器
构造器和说明
`SiftFeature()` Dummy constructor for Serialization to work properly.
`SiftFeature(float s, float o, float[] l, float[] d)`

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`int`	`compareTo(SiftFeature f)` comparator for making Features sortable please note, that the comparator returns -1 for this.scale > o.scale, to sort the features in a descending order
`float`	`descriptorDistance(SiftFeature f)`
`byte[]`	`getByteArrayRepresentation()` Writing out to bytes ... just to save some time and space.
`java.lang.Class<? extends LocalFeatureExtractor>`	`getClassOfExtractor()`
`double`	`getDistance(LireFeature feature)` 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.
`double`	`getSize()`
`double`	`getX()`
`double`	`getY()`
`void`	`setByteArrayRepresentation(byte[] in)` Reads descriptor from a byte array.
`void`	`setByteArrayRepresentation(byte[] in, int offset, int length)` Sets the feature vector values based on the byte[] data.
`void`	`toRootSIFT()` Method to convert SIFT to RootSIFT as described in Arandjelovic, Relja, and Andrew Zisserman.
`java.lang.String`	`toString()`

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 字段详细资料
  - scale
```
public float scale
```
  - orientation
```
public float orientation
```
  - location
```
public float[] location
```
- 构造器详细资料
  - SiftFeature
```
public SiftFeature()
```
    Dummy constructor for Serialization to work properly.
  - SiftFeature
```
public SiftFeature(float s,
                   float o,
                   float[] l,
                   float[] d)
```
- 方法详细资料
  - compareTo
```
public int compareTo(SiftFeature f)
```
    comparator for making Features sortable please note, that the comparator returns -1 for this.scale > o.scale, to sort the features in a descending order
    
    指定者:
    
    compareTo 在接口中 java.lang.Comparable<SiftFeature>
  - toRootSIFT
```
public void toRootSIFT()
```
    Method to convert SIFT to RootSIFT as described in Arandjelovic, Relja, and Andrew Zisserman. "Three things everyone should know to improve object retrieval." Computer Vision and Pattern Recognition (CVPR), 2012 IEEE Conference on. IEEE, 2012.
  - descriptorDistance
```
public float descriptorDistance(SiftFeature f)
```
  - toString
```
public java.lang.String toString()
```
    覆盖:
    
    toString 在类中 java.lang.Object
  - getDistance
```
public double getDistance(LireFeature feature)
```
    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:
    
    feature - the feature vector to compare the current instance to.
    
    返回:
    
    the distance (or dissimilarity) between the instance and the parameter.
  - getByteArrayRepresentation
```
public byte[] getByteArrayRepresentation()
```
    Writing out to bytes ... just to save some time and space.
    
    指定者:
    
    getByteArrayRepresentation 在接口中 LireFeature
    
    返回:
    
    另请参阅:
    
    LireFeature.setByteArrayRepresentation(byte[])
  - setByteArrayRepresentation
```
public void setByteArrayRepresentation(byte[] in)
```
    Reads descriptor from a byte array. Much faster than the String based method.
    
    指定者:
    
    setByteArrayRepresentation 在接口中 LireFeature
    
    参数:
    
    in - byte array from corresponding method
    
    另请参阅:
    
    CEDD.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.
  - 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.
  - getX
```
public double getX()
```
    指定者:
    
    getX 在接口中 LocalFeature
  - getY
```
public double getY()
```
    指定者:
    
    getY 在接口中 LocalFeature
  - getSize
```
public double getSize()
```
    指定者:
    
    getSize 在接口中 LocalFeature
  - getClassOfExtractor
```
public java.lang.Class<? extends LocalFeatureExtractor> getClassOfExtractor()
```
    指定者:
    
    getClassOfExtractor 在接口中 LocalFeature

类 SiftFeature

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

scale

orientation

location

构造器详细资料

SiftFeature

SiftFeature

方法详细资料

compareTo

toRootSIFT

descriptorDistance

toString

getDistance

getByteArrayRepresentation

setByteArrayRepresentation

setByteArrayRepresentation

getFeatureVector

getFeatureName

getFieldName

getX

getY

getSize

getClassOfExtractor