Package cz.fidentis.analyst.engines.face.batch.distance.impl

Class BatchDistanceNearestNeighbors

java.lang.Object

cz.fidentis.analyst.engines.face.batch.distance.impl.BatchIndirectDistanceImpl

cz.fidentis.analyst.engines.face.batch.distance.impl.BatchDistanceNearestNeighbors

All Implemented Interfaces:

BatchDistance, BatchIndirectDistance

Direct Known Subclasses:

BatchDistanceNearestNeighborsCombined, BatchDistanceNearestNeighborsDirect, BatchDistanceNearestNeighborsRelative

public abstract class BatchDistanceNearestNeighbors
extends BatchIndirectDistanceImpl

A class that computes similarity of a set of faces by computing the distance of faces to an average (gauge) face and then combining these values to get mutual similarity for all pairs. Euclidean distance to nearest neighbors is used as the distance metric.

The computation is accelerated by using multiple CPU cores concurrently.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	BatchDistanceNearestNeighbors.DistCache<T>	Cache of distances from the average face to other faces.

Constructor Summary

Constructors

Constructor	Description
BatchDistanceNearestNeighbors(HumanFace gaugeFace, int numFaces, BatchDistanceNearestNeighbors.DistCache<?> distCache)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	addToMeasurement(HumanFace face)	Adds the face to the N:N measurement.

Methods inherited from class cz.fidentis.analyst.engines.face.batch.distance.impl.BatchIndirectDistanceImpl

getDistCache, getDistDeviations, getDistSimilarities, getGaugeFace, measure, setDistDeviation, setDistSimilarity

Methods inherited from class java.lang.Object

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

Constructor Details

BatchDistanceNearestNeighbors

public BatchDistanceNearestNeighbors(HumanFace gaugeFace,
 int numFaces,
 BatchDistanceNearestNeighbors.DistCache<?> distCache)

Constructor.

Parameters:

gaugeFace - A face serving as a "gauge". It is usually an average face of a set of faces.

numFaces - The number of faces to be measured (excluding the gauge face)

distCache - Distance cache

Method Details

addToMeasurement

public void addToMeasurement(HumanFace face)

Description copied from interface: BatchIndirectDistance

Adds the face to the N:N measurement.

Specified by:

addToMeasurement in interface BatchIndirectDistance

Specified by:

addToMeasurement in class BatchIndirectDistanceImpl

Parameters:

face - Face to be measured