Spatially scalable video coding facilitating the derivation of variable-resolution images
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United States of America Patent
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Dec 14, 1993
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N/A
app pub date -
Jul 2, 1992
filing date -
Jul 2, 1992
priority date (Note) -
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Abstract
An adaptive technique for encoding and decoding which facilitates the transmission, reception, storage, or retrieval of a scalable video signal. The invention allows this scaling to be performed entirely in the spatial domain. In a specific embodiment of the invention this scaling is realized by adaptively encoding a video signal based upon a selection taken from among a multiplicity of predictions from previously decoded images, and a selection of compatible predictions obtained from up-sampling lower resolution decoded 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-resolution scale of video is compatible with the MPEG-1 standards.
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