A comparison of interframe coding techniques

Three different interframe coding schemes are analyzed: a) three-dimensional discrete cosine transform (DCT) coding, b) hybrid coding performing a two-dimensional DCT within a frame combined with motion adaptive DPCM coding between frames, c) hybrid coding with motion compensated DPCM. Theoretical performance estimates based on the mean-square error criterion are developed for the coding of spatially isotropic images with temporal changes due to linear uniform motion. Some TV camera effects, i.e. target storage, beam aperture, and interlaced scanning, are taken into account. The motion compensated scheme performes best, followed by the three-dimensional DCT coding. Simulation results confirm the main statements.