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

Class BatchDistanceNearestNeighborsDirect

java.lang.Object

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

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

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

All Implemented Interfaces:

BatchDistance, BatchIndirectDistance

public class BatchDistanceNearestNeighborsDirect
extends BatchDistanceNearestNeighbors

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. Nearest neighbors from the gauge vertices to other vertices are cached and then their Euclidean distance is computed to estimate mutual similarity.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	BatchDistanceNearestNeighborsDirect.DirectionCache	Cache of vectors to the nearest neighbors, from which the final distance is computed.

Nested classes/interfaces inherited from class cz.fidentis.analyst.engines.face.batch.distance.impl.BatchDistanceNearestNeighbors

BatchDistanceNearestNeighbors.DistCache<T>

Constructor Summary

Constructors

Constructor	Description
BatchDistanceNearestNeighborsDirect(HumanFace gaugeFace, int numFaces)	Constructor.

Method Summary

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

addToMeasurement

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

BatchDistanceNearestNeighborsDirect

public BatchDistanceNearestNeighborsDirect(HumanFace gaugeFace,
 int numFaces)

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)