Composite Motion Compensation Scheme based on Hadamard Transform

Abstract

Component TV signal-based interframe MC DCT scheme is widely used because of its high performance. Current TV transmission, however, is conducted at composite TV signal base. Y/C separation, therefore, is needed to apply interframe MC DCT scheme to composite TV signal. But this causes degradation in picture quality and additional hardwares. We, thus, propose composite TV signal-based interframe MC scheme using Hadamard transform (WHT) to avoid Y/C separation. In this scheme, colour sub-carrier phase is compensated on WHT domain according to a motion vector, and MC with more than half pel accuracy is performed by interpolation of WHT coefficients. Coding performance of this scheme is evaluated by computer simulation.