Temporal domain sub-band video coding with motion compensation

Temporal domain subband coding with motion compensation (MC-SBC) is a new technique of interframe data compression in video coding applications. Perfect reconstruction is possible with one-pixel accuracy for motion parameters and a trivial first-order quadrature mirror filter (QMF). With comparable complexity, even this most simple type of MC-SBC outperforms MC prediction (MC-DPCM) techniques when blockwise motion estimation is used. The concept of MC-SBC is generalized to subpixel accuracy of MC and any even-length (odd-order) QMF filters. Motion estimation is performed in a hierarchical forward-backward procedure which gives better SNR and visual performance results than blockwise-independent estimation. The scheme is extremely error resistant due to its nonrecursive structure; the gain over MC-DPCM is remarkably high, especially in layered coding schemes as they are discussed for ATM video applications. Results of MC-SBC and other interframe coding schemes are compared using two different intrafracture schemes in layered and nonlayered coding applications