Motion-compensated Video Coding Techniques

The ever-increasing demands of the modern telemetry system for the transmission of high resolution digital video data at primary and sub-primary bit rates necessitate the employment of efficient motion-compensated video coding algorithms. This paper reviews the current status of motion compensation techniques. The two major classes of motion estimation methods currently being used for predictive coding of time varying images: block matching and pel-recursive algorithms are treated in thorough detail. Examples of practical video coding systems using motion compensated compression are exhibited. Recent advances in the VLSI technology have made it possible to fit the entire circuitry required for a motion compensation algorithm onto a single chip.