edu.umn.cs.spatialHadoop.nasa

Class ImageCompare

java.lang.Object

edu.umn.cs.spatialHadoop.nasa.ImageCompare

public class ImageCompare
extends java.lang.Object

Compares two images for one part in the world for similarity

Author:

Ahmed Eldawy

Constructor Summary

Constructors

Constructor and Description
ImageCompare()

Method Summary

Methods

Modifier and Type	Method and Description
static void	compareFolders(Path dir1, Path dir2) Compares two directories for similar images with matching names.
static double	compareImages(Path file1, Path file2) Returns a similarity measure between two images on the scale from 0 to 1.
static void	main(java.lang.String[] args)

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

compareImages

public static double compareImages(Path file1,
                   Path file2)
                            throws java.io.IOException

Returns a similarity measure between two images on the scale from 0 to 1. 0 indicates no similarity at all while 1 indicates exact similarity (i.e., the same image). The images are assumed to be generated using Plot of PoltPyramid for NASA data.

Parameters:

file1 - - path to the first image

file2 - - path to the second image

Returns:

the similarity measure on a scale from 0 to 1

Throws:

java.io.IOException - - if an error occurs while loading any of the images

compareFolders

public static void compareFolders(Path dir1,
                  Path dir2)
                           throws java.io.IOException

Compares two directories for similar images with matching names.

Parameters:

dir1 -

dir2 -

Throws:

java.io.IOException

main

public static void main(java.lang.String[] args)
                 throws java.io.IOException

Parameters:

args -

Throws:

java.io.IOException