net.gdface.image

Class Fingerprint

java.lang.Object

net.gdface.image.Fingerprint

public final class Fingerprint
extends java.lang.Object

均值哈希实现图像指纹比较,用于比较两个图像的内容的相似度

Author:

guyadong

Constructor Summary

Constructors

Constructor and Description
Fingerprint(byte[] hashValue)
Fingerprint(java.awt.Image src)
Fingerprint(java.lang.String hashValue)

Method Summary

Modifier and Type	Method and Description
byte[]	compact() 返回压缩存储的指纹数据
java.lang.String	compactHEX() 返回压缩存储的指纹数据(HEX字符串)
float	compare(byte[] hashValue) 与指定的指纹比较相似度
float	compare(Fingerprint src) 比较指纹相似度
float	compare(java.awt.Image image2) 与指定图像比较相似度
static float	compare(java.awt.Image image1, java.awt.Image image2) 比较两个图像内容的相似度
float	compare(java.lang.String hashValue)
float	compareCompact(byte[] compactValue) 与指定的压缩格式指纹比较相似度
static float	compareCompact(byte[] f1, byte[] f2) 压缩格式指纹比较
static Fingerprint	createFromCompact(byte[] compactValue) 从压缩格式指纹创建Fingerprint对象
static Fingerprint	createFromCompact(java.lang.String compactValueHex)
static <T> Fingerprint	createFromImage(T src)
static <T> Fingerprint	createFromImageNoThrow(T src)
boolean	equals(java.lang.Object obj)
java.lang.String	toString()
java.lang.String	toString(boolean multiLine)
static boolean	validHashValue(byte[] hashValue) 验证是否为有效的指纹数据
static boolean	validHashValue(java.lang.String hashValue)

Methods inherited from class java.lang.Object

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

Constructor Detail

Fingerprint

public Fingerprint(byte[] hashValue)

Fingerprint

public Fingerprint(java.lang.String hashValue)

Fingerprint

public Fingerprint(java.awt.Image src)

Method Detail

createFromImage

public static <T> Fingerprint createFromImage(T src)
                                       throws UnsupportedFormatException,
                                              NotImageException

Throws:

UnsupportedFormatException

NotImageException

createFromImageNoThrow

public static <T> Fingerprint createFromImageNoThrow(T src)

createFromCompact

public static Fingerprint createFromCompact(byte[] compactValue)

从压缩格式指纹创建Fingerprint对象

Parameters:

compactValue -

Returns:

createFromCompact

public static Fingerprint createFromCompact(java.lang.String compactValueHex)

Parameters:

compactValueHex -

Returns:

See Also:

createFromCompact(byte[])

validHashValue

public static boolean validHashValue(byte[] hashValue)

验证是否为有效的指纹数据

Parameters:

hashValue -

Returns:

validHashValue

public static boolean validHashValue(java.lang.String hashValue)

Parameters:

hashValue -

Returns:

See Also:

validHashValue(byte[])

compact

public byte[] compact()

返回压缩存储的指纹数据

Returns:

compactHEX

public java.lang.String compactHEX()

返回压缩存储的指纹数据(HEX字符串)

Returns:

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

toString

public java.lang.String toString(boolean multiLine)

Parameters:

multiLine - 是否分行

Returns:

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

compareCompact

public float compareCompact(byte[] compactValue)

与指定的压缩格式指纹比较相似度

Parameters:

compactValue -

Returns:

See Also:

compare(Fingerprint)

compare

public float compare(java.lang.String hashValue)

Parameters:

hashValue -

Returns:

See Also:

compare(Fingerprint)

compare

public float compare(byte[] hashValue)

与指定的指纹比较相似度

Parameters:

hashValue -

Returns:

See Also:

compare(Fingerprint)

compare

public float compare(java.awt.Image image2)

与指定图像比较相似度

Parameters:

image2 -

Returns:

See Also:

compare(Fingerprint)

compare

public float compare(Fingerprint src)

比较指纹相似度

Parameters:

src -

Returns:

See Also:

compare(byte[], byte[])

compareCompact

public static float compareCompact(byte[] f1,
                                   byte[] f2)

压缩格式指纹比较

Parameters:

f1 -

f2 -

Returns:

compare

public static float compare(java.awt.Image image1,
                            java.awt.Image image2)

比较两个图像内容的相似度

Parameters:

image1 -

image2 -

Returns: