一种新型的低复杂度、高效的四叉树渐进小波编码器

Conference Record of the Thirty-Fourth Asilomar Conference on Signals, Systems and Computers (Cat. No.00CH37154) Pub Date : 2000-10-29 DOI:10.1109/ACSSC.2000.910675

Marco Grangetto, E. Magli, G. Olmo

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引用次数: 1

摘要

提出了一种用于有损图像压缩的渐进式四叉树小波(PQW)编解码器。PQW是基于众所周知的四叉树技术，应用于小波变换领域。该算法的设计目标是实现低复杂度和减少内存需求，同时考虑到在无线(例如UMTS)频道上浏览互联网等应用。除了较低的复杂度外，PQW提供与流行的SPIHT编解码器相同的主观性能，而在峰值信噪比方面，PQW表现出约0.5 dB的轻微性能损失。

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A novel low complexity and efficient progressive quadtree wavelet encoder

In this paper the progressive quadtree wavelet (PQW) codec for lossy image compression is presented. PQW is based on the well known quadtree technique, applied in the wavelet transform domain. The proposed algorithm is designed with the aim of achieving low complexity and reduced memory requirements, keeping in mind applications such as Internet browsing on wireless (e.g. UMTS) channels. Besides its lower complexity, PQW provides the same subjective performance as the popular SPIHT codec while, in terms of the peak signal-to-noise ratio, it exhibits a slight performance loss of about 0.5 dB.

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Conference Record of the Thirty-Fourth Asilomar Conference on Signals, Systems and Computers (Cat. No.00CH37154)

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