Scalable wavelet video-coding with in-band prediction - the bottom-up overcomplete discrete wavelet transform
Van der Auwera, G.
Munteanu, A.
Schelkens, P.
Cornelis, J.
Dept. of Electron. & Inf. Process., Vrije Univ., Brussels, Belgium;
This paper appears in: Image Processing. 2002. Proceedings. 2002 International Conference on
Publication Date: 24-28 June 2002
Volume: 3,
On page(s): 725- 728 vol.3
ISSN: 1522-4880
ISBN: 0-7803-7622-6
INSPEC Accession Number: 7614220
Digital Object Identifier: 10.1109/ICIP.2002.1039074
Current Version Published: 2002-12-10
Abstract
A new in-band motion compensation algorithm for wavelet-based video coding is proposed: the bottom-up prediction algorithm (BUP). The BUP algorithm overcomes the periodic shift-invariance of the discrete wavelet transform (DWT) and is formalized into new prediction rules using filtering operations. BUP is based on the relationships between the subbands of the shifted input signal and the subbands of the non-shifted reference signal, whereby the number of shifts is limited by the periodic shift-invariance of the DWT. We derive the algorithm for the 1-D DWT with three decomposition levels. The combination of all prediction rules of the BUP algorithm defines a new transform: the bottom-up overcomplete DWT or BUP ODWT, which is shift-invariant. The BUP ODWT calculates the overcomplete subbands by applying the prediction rules to the critically sampled subbands of a wavelet-transformed image. The envisaged application for the BUP algorithm is spatially scalable video coding.
Index
Terms
Available to subscribers and IEEE members.
References
Available to subscribers and IEEE members.
Citing Documents
Available to subscribers and IEEE members.
Cart
