Fast orthogonality deficiency compensation for improved frequency selective image extrapolation

Conference contribution
(Conference Contribution)


Publication Details

Author(s): Seiler J, Kaup A
Publication year: 2008
Pages range: 781-784
ISBN: 9781424414840


Abstract


The purpose of this paper is to introduce a very efficient algorithm for signal extrapolation. It can widely be used in many applications in image and video communication, e. g. for concealment of block errors caused by transmission errors or for prediction in video coding. The signal extrapolation is performed by extending a signal from a limited number of known samples into areas beyond these samples. Therefore a finite set of orthogonal basis functions is used and the known part of the signal is projected onto them. Since the basis functions are not orthogonal regarding the area of the known samples, the projection does not lead to the real portion a basis function has of the signal. The proposed algorithm efficiently copes with this non-orthogonality resulting in very good objective and visual extrapolation results for edges, smooth areas, as well as structured areas. Compared to an existent implementation, this algorithm has a significantly lower computational complexity without any degradation in quality. The processing time can be reduced by a factor larger than 100. ©2008 IEEE.



FAU Authors / FAU Editors

Kaup, André Prof. Dr.-Ing.
Lehrstuhl für Multimediakommunikation und Signalverarbeitung
Seiler, Jürgen PD Dr.-Ing.
Lehrstuhl für Multimediakommunikation und Signalverarbeitung


How to cite

APA:
Seiler, J., & Kaup, A. (2008). Fast orthogonality deficiency compensation for improved frequency selective image extrapolation. (pp. 781-784). Las Vegas, NV, US.

MLA:
Seiler, Jürgen, and Andre Kaup. "Fast orthogonality deficiency compensation for improved frequency selective image extrapolation." Proceedings of the 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP, Las Vegas, NV 2008. 781-784.

BibTeX: 

Last updated on 2018-19-12 at 20:52