j2d.face
Class EigenFaceCreator

java.lang.Object
  j2d.face.EigenFaceCreator

public class EigenFaceCreator
extends java.lang.Object

Creates the FaceBundle's from the list of images and tries to match against submitted image.

Version:

1.0

Author:

Konrad Rzeszutek

Field Summary

double	DISTANCE Our minimum distance observed for the submitted image in the face-spaces.
static double	THRESHOLD Our threshold for accepting the matched image.
int	USE_CACHE This determines if caching of face-spaces should be activated.

Constructor Summary

EigenFaceCreator()

Method Summary

java.lang.String	checkAgainst(java.io.File f) Match against the given file.
java.lang.String	checkAgainstImage(java.awt.image.BufferedImage bufferedImage)
ImageDistances	getImageDistances(java.io.File dir, java.awt.image.BufferedImage bi)
void	readFaceBundles(java.io.File rootDir) Construct the face-spaces from the given directory.
double[]	readImage(java.awt.image.BufferedImage bi)
double[]	readImage(java.io.File f)

Methods inherited from class java.lang.Object

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

Field Detail

THRESHOLD

public static double THRESHOLD

Our threshold for accepting the matched image. Anything above this number is considered as not found in any of the face-spaces.

DISTANCE

public double DISTANCE

Our minimum distance observed for the submitted image in the face-spaces.

USE_CACHE

public int USE_CACHE

This determines if caching of face-spaces should be activated. Anything above zero means yes. Anything else means no.

Constructor Detail

EigenFaceCreator

public EigenFaceCreator()

Method Detail

checkAgainst

public java.lang.String checkAgainst(java.io.File f)
                              throws java.io.IOException

Match against the given file.

Returns:

The Identifier of the image in the face-space. If image not found (based on THRESHOLD) null is returned.

Throws:

java.io.IOException

checkAgainstImage

public java.lang.String checkAgainstImage(java.awt.image.BufferedImage bufferedImage)
                                   throws java.io.IOException

Throws:

java.io.IOException

readFaceBundles

public void readFaceBundles(java.io.File rootDir)
                     throws java.io.IOException,
                            java.lang.IllegalArgumentException,
                            java.lang.ClassNotFoundException

Construct the face-spaces from the given directory. There must be affineTransform least sixteen images in that directory and each image must have the same dimensions. The face-space bundles are also cached in that directory for speeding up further initialization.

Parameters:

rootDir - The directory where the training images are located.

Throws:

java.io.FileNotFoundException - The rootDir directory does not exist.

java.io.IOException - Problems reading images from the given directory or saving the cache file (if caching is enabled)

java.lang.IllegalArgumentException - The arguments submitted are wrong.

java.lang.ClassNotFoundException - The cached objects are out-of-date or are not this version's face-space objects

getImageDistances

public ImageDistances getImageDistances(java.io.File dir,
                                        java.awt.image.BufferedImage bi)
                                 throws java.io.IOException

Throws:

java.io.IOException

readImage

public double[] readImage(java.awt.image.BufferedImage bi)

readImage

public double[] readImage(java.io.File f)
                   throws java.lang.IllegalArgumentException,
                          java.io.IOException

Throws:

java.lang.IllegalArgumentException

java.io.IOException