1. A method for designating a pixel group movement as an unusual event in a wide angle video, comprising the steps of: determining movement trajectories of a group of pixels corresponding to a moving object in the wide angle video; and associating the moving object trajectories with unusual behavior designated as an unusual event in a non-rectilinear image domain using non-hidden Markov models; and designating a moving object trajectory as unusual behavior when the conditional probability of at least one non-hidden Markov model defined as unusual behavior exceeds the conditional probability of a non-hidden Markov model defined as usual behavior.