Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/71625
Title: Residual image coding using a SPIHT-based video coder
Authors: Hau, Y.W.
Kassim, A.A. 
Siong, L.W. 
Issue Date: 2004
Source: Hau, Y.W.,Kassim, A.A.,Siong, L.W. (2004). Residual image coding using a SPIHT-based video coder. 2004 9th IEEE Singapore International Conference on Communication Systems, ICCS : 225-229. ScholarBank@NUS Repository.
Abstract: This paper describes the design and implementation of a block-based Set Partitioning in Hierarchical Trees (SPIHT) coder which is capable of encoding residual images in low bit-rate video coding. Unlike the SPIHT coder which encodes an entire image frame, the new algorithm encodes the subdivided image regions (16×16 blocks) differentially based on an optimization bit allocation strategy. Instead of applying DWT to the whole image, it is applied separately on each partitioned block of the original image and, depending on the statistics of each image region, the number of wavelet coefficients to be retained is determined. Our experiments show that the proposed Block-based SPIHT coder (BSC) performs better than SPIHT in terms of PSNR (objective criteria) & visual perception quality (subjective criteria).
Source Title: 2004 9th IEEE Singapore International Conference on Communication Systems, ICCS
URI: http://scholarbank.nus.edu.sg/handle/10635/71625
ISBN: 0780385497
Appears in Collections:Staff Publications

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