Package org.opencv.img_hash

Class ImgHashBase

java.lang.Object

org.opencv.core.Algorithm

org.opencv.img_hash.ImgHashBase

Direct Known Subclasses:

AverageHash, BlockMeanHash, ColorMomentHash, MarrHildrethHash, PHash, RadialVarianceHash

public class ImgHashBase
extends Algorithm

The base class for image hash algorithms

Field Summary

Fields inherited from class org.opencv.core.Algorithm

nativeObj

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ImgHashBase(long addr)

Method Summary

Modifier and Type	Method	Description
static ImgHashBase	__fromPtr__(long addr)
double	compare(Mat hashOne, Mat hashTwo)	Compare the hash value between inOne and inTwo
void	compute(Mat inputArr, Mat outputArr)	Computes hash of the input image

Methods inherited from class org.opencv.core.Algorithm

clear, empty, getDefaultName, getNativeObjAddr, save

Methods inherited from class java.lang.Object

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

Constructor Details

ImgHashBase

protected ImgHashBase(long addr)

Method Details

__fromPtr__

public static ImgHashBase __fromPtr__(long addr)

compute

public void compute(Mat inputArr,
 Mat outputArr)

Computes hash of the input image

Parameters:

inputArr - input image want to compute hash value

outputArr - hash of the image

compare

public double compare(Mat hashOne,
 Mat hashTwo)

Compare the hash value between inOne and inTwo

Parameters:

hashOne - Hash value one

hashTwo - Hash value two

Returns:

value indicate similarity between inOne and inTwo, the meaning of the value vary from algorithms to algorithms