Predictive transform estimation vs. hybrid estimation

A comparative analysis of the implementation reduction mechanisms present in a predictive transform (PT) estimation scheme and in a conventional time-frequency or hybrid estimation approach inspired by hybrid coding is performed. This comparative study focuses on the estimation dual of the hybrid versus predictive transform coding problem, and thus serves to further illustrate the ability of the PT approach to unify seemingly disjoint areas of signal processing. A Kalman-type estimation example, based on a previously considered NTSC image reconstruction problem, is used to illustrate the above ideas. The PT approach is shown to provide a more natural data compression mechanism than the hybrid approach for reducing implementation complexity, while yielding satisfactory performance