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DCC
1999
IEEE

Quadtree Classification and TCQ Image Coding

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Quadtree Classification and TCQ Image Coding
The set partitioning in hierarchical trees (SPIHT) wavelet image coding algorithm can be interpreted as implicitly using classification in its bit-plane coding procedure. The source distribution induced by this classification is studied and rate-distortion performance is evaluated. A quadtree sorting procedure, similar to SPIHT, is used to explicitly form classes of wavelet coefficients. The classes are encoded using arithmetic and trellis-coded quantization. The resulting encoding algorithm offers consistent improvement over SPIHT performance due to the granular gain of the trellis code.
Brian A. Banister, Thomas R. Fischer
Added 03 Aug 2010
Updated 03 Aug 2010
Type Conference
Year 1999
Where DCC
Authors Brian A. Banister, Thomas R. Fischer
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