Video surveillance system with trajectory hypothesis scoring based on at least one non-spatial parameter
First Claim
1. A method for use in a video surveillance system, the method comprising generating a plurality of hypotheses, each hypothesis comprising a respective different set of hypothesized trajectories of objects hypothesized to have been moving through an area under surveillance at a particular time, and computing for least ones of said hypotheses an associated likelihood, said likelihood being a measure of the probability that the associated hypothesis represents the actual trajectories of the actual objects moving through the area under surveillance at said particular time, said likelihood being a function of at least one parameter that is other than a parameter indicative of a spatial relationship between the positions of objects along the trajectories of the associated hypothesis.
4 Assignments
0 Petitions
Accused Products
Abstract
A video surveillance system uses rule-based reasoning and multiple-hypothesis scoring to detect predefined behaviors based on movement through zone patterns. Trajectory hypothesis spawning allows for trajectory splitting and/or merging and includes local pruning to managed hypothesis growth. Hypotheses are scored based on a number of criteria, illustratively including at least one non-spatial parameter. Connection probabilities computed during the hypothesis spawning process are based on a number of criteria, illustratively including object size. Object detection and probability scoring is illustratively based on object class.
-
Citations
16 Claims
-
1. A method for use in a video surveillance system, the method comprising
generating a plurality of hypotheses, each hypothesis comprising a respective different set of hypothesized trajectories of objects hypothesized to have been moving through an area under surveillance at a particular time, and computing for least ones of said hypotheses an associated likelihood, said likelihood being a measure of the probability that the associated hypothesis represents the actual trajectories of the actual objects moving through the area under surveillance at said particular time, said likelihood being a function of at least one parameter that is other than a parameter indicative of a spatial relationship between the positions of objects along the trajectories of the associated hypothesis.
Specification