unimodal distribution. This basic model is used in .
However, a single-mode model cannot handle multiple
backgrounds, like waving trees. The generalized mixture
of Gaussians (MOG) in has been used to model
complex, non-static backgrounds. Methods employing
MOG have been widelyincorpora ted into algorithms
that utilize Bayesian frameworks , dense depth data
, color and gradient information , mean-shift
analysis [7], and region-based information .