Package edu.gsu.cs.dmlab.tracking.stages.interfaces

Interface ISTEdgeWeightCalculator

All Known Implementing Classes:

BaseEdgeWeightCalculator, EdgeWeightCalculatorStageThree, EdgeWeightCalculatorStageTwo

public interface ISTEdgeWeightCalculator

The public interface for classes that return the weights of edges in the graph used to solve the minimum cost multi-commodity flow problem used for associating tracks into longer tracks. From Kempton et. al 2015 and 2018.

Author:

Dustin Kempton, Data Mining Lab, Georgia State University

Method Summary

Modifier and Type	Method	Description
double	associationEdgeWeight(ISTTrackingTrajectory leftTrack, ISTTrackingTrajectory rightTrack)	Returns the weight for an edge that goes between the second vertex of the first track to the first vertex of the second track.
double	observationEdgeWeight(ISTTrackingEvent event)	Returns the weight for an edge that goes between the two vertices that represent the passed in event.
double	sinkEdgeWeight(ISTTrackingEvent event)	Returns the weight for an edge from the vertex representing the passed in event to the sink.
double	sourceEdgeWeight(ISTTrackingEvent event)	Returns the weight for an edge from the source to the vertex representing the passed in event.

Method Detail

sourceEdgeWeight

double sourceEdgeWeight(ISTTrackingEvent event)

Returns the weight for an edge from the source to the vertex representing the passed in event.

Parameters:

event - The event to calculate the edge weight for.

Returns:

The edge weight for the edge from the source

sinkEdgeWeight

double sinkEdgeWeight(ISTTrackingEvent event)

Returns the weight for an edge from the vertex representing the passed in event to the sink.

Parameters:

event - The event to calculate the edge weight for.

Returns:

The edge weight for the edge to the sink

observationEdgeWeight

double observationEdgeWeight(ISTTrackingEvent event)

Returns the weight for an edge that goes between the two vertices that represent the passed in event. The weight represents the probability of this event being a true detection as opposed to a false detection.

Parameters:

event - The event to calculate the edge weight for.

Returns:

A value representing how likely it is that the given event is a true detection.

associationEdgeWeight

double associationEdgeWeight(ISTTrackingTrajectory leftTrack,
                             ISTTrackingTrajectory rightTrack)

Returns the weight for an edge that goes between the second vertex of the first track to the first vertex of the second track. This weight represents how likely it is that these two tracks represent the same object at different times.

Parameters:

leftTrack - The earlier track

rightTrack - The later track

Returns:

A value representing how likely it is that the two tracks represent the same object.