Open Access

3D Scan-Based Wavelet Transform and Quality Control for Video Coding

EURASIP Journal on Advances in Signal Processing20032003:670972

https://doi.org/10.1155/S1110865703210064

Received: 4 March 2002

Published: 30 January 2003

Abstract

Wavelet coding has been shown to achieve better compression than DCT coding and moreover allows scalability. 2D DWT can be easily extended to 3D and thus applied to video coding. However, 3D subband coding of video suffers from two drawbacks. The first is the amount of memory required for coding large 3D blocks; the second is the lack of temporal quality due to the sequence temporal splitting. In fact, 3D block-based video coders produce jerks. They appear at blocks temporal borders during video playback. In this paper, we propose a new temporal scan-based wavelet transform method for video coding combining the advantages of wavelet coding (performance, scalability) with acceptable reduced memory requirements, no additional CPU complexity, and avoiding jerks. We also propose an efficient quality allocation procedure to ensure a constant quality over time.

Keywords

scan-based DWT 3D subband coding quality control video coding

Authors’ Affiliations

(1)
Laboratoire I3S, UMR 6070, (CNRS, Université de Nice-Sophia Antipolis)

Copyright

© Copyright © 2003 Hindawi Publishing Corporation 2003