Patent ID: 8848976
Filing Date: 2014-09-30
Classification: G06T,H04N

Abstract:
1. A method characterized by a track parameters estimation unit which realizes the steps of starting estimation from the lowest resolution level (m=m estimating track parameters (p) for a single level by using complex discrete wavelet transforms at this level (m) wherein estimation of the track parameters (p) is performed by defining a parametric motion model (M(x;p where D (s,m) (x,t) denotes the CDWT coefficient at location x of the detailed subband s of level m of the video frame at time t and e (s,m) denotes the CDWT subband noise; adding track parameters (p) to the cumulative track parameters (p′); scaling the cumulative tracking parameters (p′) to the next upper resolution level (m−1); if the current level (m) is the uppermost resolution level (m=m if the current level is not the uppermost resolution level (m≠m proceeding to the next upper resolution level (m=m−1) and continuing with the step of estimating the track parameters.