- Set partitioning in hierarchical trees
Set Partitioning in Hierarchical Trees (SPIHT) [cite journal
last = Said|first = Amir|coauthors = Pearlman, William A.
title = A new fast and efficient image codec based upon set partitioning in hierarchical trees
journal = IEEE Transactions on Circuits and Systems for Video Technology
volume = 6
pages = 243–250
date = June 1996
issn = 1051-8215
doi = 10.1109/76.499834] is an image compression algorithm that exploits the inherent similarities across the subbands in a wavelet decomposition of an image.
The algorithm codes the most important wavelet transform coefficients first, and transmits the bits so that an increasingly refined copy of the original image can be obtained progressively.
The SPIHT is considered the premier state-of-the-art algorithm in image compressionFact|date=April 2008, and has given excellent results in terms of compression performance for the natural images (and signals).
To get more information on spiht, on its other variants and for the source codes (read license agreements) please visit the [http://www.cipr.rpi.edu/research/SPIHT Official Page of SPIHT] in [http://www.rpi.edu/ Rensselaer Polytechnic Institute] .
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