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

摘要

An adaptive technique for encoding and decoding which facilitates thetransmission, reception, storage, or retrieval of a scalable video signal. The invention allowsthis scaling to be performed entirely in the spatial domain. In a specific embodiment of theinvention this scaling is realized by adaptively encoding a video signal based upon a selectiontaken from among a multiplicity of predictions from previously decoded images, and aselection of compatible predictions obtained from up-sampling lower resolution decodedimages of the current temporal reference. A technical advantage of the invention is that boththe syntax and signal multiplexing structure of at least one encoded lower-resolution scale ofvideo is compatible with the MPEG-1 standards.