MARKERLESS ARTICULATED HUMAN MOTION TRACKING USING HIERARCHICAL MULTI-SWARM COOPERATIVE PARTICLE SWARM OPTIMIZATION

Markerless articulated human motion tracking is an emerging tield with potential
applications in areas such as automatic smart security surveillance. medical
rehabilitation. computer based animations in games and movie industries. The
primary objective of markerless articulated human motion tracking is to automatically
infer human pose. expressed in tenms of joint angles from a video stream (sequences
of images). However. extracting the articulated human body motion from multi-view
synchronized video stream is a dit1icult task due to the underlying multimodal and
high dimensional estimation problem. The Particle Filtering (PF) algorithm is the
most extensively used tor generative model based articulated human motion tracking.
However. it suffers from ·curse of dimensionality' and the challenge of ·particle
degeneracy'. Furthermore. PF algorithm requires manual initialization and needs a
sequence-specific motion model. Most recently. the swarm-intelligence based PSO
algorithm have been gaining momentum in this tield.