Performance analysis of multiscale motion compensation techniques in pyramid coders

Spatio-temporal resolution pyramids are well suited for scalable video codecs. An oversampled pyramid decomposition can be incorporated eeciently into either open-loop or closed-loop pyramid encoders. In this paper, we discuss two diierent motion compensation (MC) techniques suitable for open-loop as well as for closed-loop pyramid coders. We compare the performance of each technique to both pyramid coders for the case of equal quantization noise in all resolution layers. Simulation results show that in this case all schemes have similar performance. By allowing higher quantization noise in the predicted frame it can be seen that bandpass MC performs up to 1 dB better.