Facemorph.condensation
Class SimpleCondensation

java.lang.Object
  Facemorph.condensation.SimpleCondensation

public abstract class SimpleCondensation
extends java.lang.Object

Simple condensation implementation

Constructor Summary

SimpleCondensation(double[] initial, double[] variances, int count)
SimpleCondensation constructor

Method Summary

double[]	generateSample(double[] previous) Generates a single sample from a previous one using the variances given
double[]	getCurrentBest() Gets the current highest rated estimate will rate the set if not yet rated
void	nextGeneration() Construct the next generation.
void	rateGeneration() Rate a whole generation and normalise the weightings (sum to 1)
abstract double	rateSample(double[] sample) Method to rate an individual sample, implementation dependent

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleCondensation

public SimpleCondensation(double[] initial,
                          double[] variances,
                          int count)

SimpleCondensation constructor

Parameters:

initial - the initial value to work from

variances - the dynamic variance of each parameter

count - the number of samples to retain each iteration

Method Detail

generateSample

public double[] generateSample(double[] previous)

Generates a single sample from a previous one using the variances given

Parameters:

previous - the previous value of the sample

Returns:

returns the new value of the sample, randomly perturbed from the original position

rateSample

public abstract double rateSample(double[] sample)

Method to rate an individual sample, implementation dependent

Parameters:

sample - the sample to rate

Returns:

returns the weighting of this sample, should be positive

rateGeneration

public void rateGeneration()

Rate a whole generation and normalise the weightings (sum to 1)

nextGeneration

public void nextGeneration()

Construct the next generation. Will rate the generation if they haven't been rated yet.

getCurrentBest

public double[] getCurrentBest()

Gets the current highest rated estimate will rate the set if not yet rated

Returns:

returns the current best guess