SPATIALLY SCALABLE VIDEO CODING FACILITATING THE DERIVATION OF VARIABLE-RESOLUTION IMAGES

摘要

An adaptive technique for encoding and decoding which facilitates the transmission, reception, storage, or retrieval of a scalable video signal. The i nvention allows this scaling to be performed entirely in the spatial domain. In a specific embod iment of the invention this scaling is realized by adaptively encoding a video signal based u pon a selection taken from among a multiplicity of predictions from previously decoded images, a nd a selection of compatible predictions obtained from up-sampling lower resolution d ecoded images of the current temporal reference. A technical advantage of the invention is that both the syntax and signal multiplexing structure of at least one encoded lower-resol ution scale of video is compatible with the MPEG-1 standards.