com.github.hypfvieh.imaging

Class ImageCompare

java.lang.Object

com.github.hypfvieh.imaging.ImageCompare

public class ImageCompare
extends Object

Constructor Summary

Constructors

Constructor and Description
ImageCompare()

Method Summary

Modifier and Type	Method and Description
static int	calcHammingDistance(String _left, String _right) Calculate the hamming distance of the two given strings.
static int	compareWith(IImgHash _hasher, File _img1, File _img2) Calculate hashes for _img1 and _img2 using _hasher and return the hamming distance as result.

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageCompare

public ImageCompare()

Method Detail

compareWith

public static int compareWith(IImgHash _hasher,
                              File _img1,
                              File _img2)

Calculate hashes for _img1 and _img2 using _hasher and return the hamming distance as result.

Parameters:

_hasher - hash implemenation to use

_img1 - first image

_img2 - second image

Returns:

distance score

calcHammingDistance

public static int calcHammingDistance(String _left,
                                      String _right)

Calculate the hamming distance of the two given strings. String must have the same length!

For further explanation about the Hamming Distance, take a look at its Wikipedia page at http://en.wikipedia.org/wiki/Hamming_distance.

Parameters:

_left - first checksum

_right - second checksum

Returns:

distance score

Throws:

IllegalArgumentException - if strings do not have same length

NullPointerException - if either _left or _right string is null