Rendering from compressed textures
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
Real-time applications on the Internet
BT Technology Journal
A low power video encoder with power, memory and bandwidth scalability
VLSID '96 Proceedings of the 9th International Conference on VLSI Design: VLSI in Mobile Communication
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This paper presents an algorithm for scalable compression using tree structured vector quantization (TSVQ) of perceptually weighted block, lapped, or wavelet transforms. The algorithm produces an embedded bit-stream to support decoders with various spatial and temporal resolutions. Bandwidth scalability with a dynamic range from a few kbps to several Mbps is provided. The algorithm further supports decoders with varying alphabet size, computation, memory, latency and power requirements. The embedded bit-stream produced is prioritized with bits arranged in order of visual importance. The algorithm also allows easy joint-source channel coding on heterogenous networks. The subjective quality of compressed images improves significantly by the use of perceptual distortion measures.