Videokodierungs- und -dekodierungsvorrichtung

摘要

A video encoding apparatus characterised by comprising encoding means (203-205, 210-214, 218) having an intra-encoding mode to intra-encode an input video signal and an inter-encoding mode to inter-encode an input video signal; selection means (216) for selecting one of the inter-encoding mode and the intra-encoding mode for each specified domain of a picture represented by the input video signal; and decision means (217) for determining whether each specified domain of the picture is a motion domain or a stationary domain, on the basis of the input video signal and a video signal representing a frame immediately preceding the frame represented by the input video signal, said selection means (216) causing said encoding means to periodically set an intra-encoding domain in the frame represented by the input video signal and to refresh the input video signal so as to move the intra-encoding domain in the frame, and making a cycle of refreshing the signal for a stationary domain longer than a cycle of refreshing the signal for a motion domain. <IMAGE>