Fast and robust spatio-temporal image alignment for inter-sequence error concealment

Conference contribution
(Conference Contribution)


Publication Details

Author(s): Tröger T, Kaup A
Publication year: 2010
Pages range: 445-448
ISBN: 9781424479948


Abstract


Terrestrial broadcasting of digital TV is often error-prone due to suboptimal channels. Inter-sequence error concealment is a novel technique to reconstruct lost image blocks of video signals by inserting error-free blocks of reference signals. Considering multi-broadcast receivers, reference signals are typically scaled, cropped and delayed. Spatio-temporal image alignment therefore is the crucial point of inter-sequence error concealment. A well-known intensity-based approach utilizing a numerical optimization technique shows supreme reconstruction quality outperforming state-of-the-art concealment methods by up to 15 dB PSNRY. In this paper, we present a novel feature-based approach which significantly reduces complexity. By using scale-invariant features for image alignment, the computation time can be reduced by a factor of up to 32.4. As reconstruction quality is almost kept constant, robustness of our algorithm is high. The maximum loss is 0.8 dB in terms of PSNRY. © 2010 IEEE.



FAU Authors / FAU Editors

Kaup, André Prof. Dr.-Ing.
Lehrstuhl für Multimediakommunikation und Signalverarbeitung
Tröger, Tobias
Lehrstuhl für Multimediakommunikation und Signalverarbeitung


How to cite

APA:
Tröger, T., & Kaup, A. (2010). Fast and robust spatio-temporal image alignment for inter-sequence error concealment. (pp. 445-448). Hong Kong, CN.

MLA:
Tröger, Tobias, and Andre Kaup. "Fast and robust spatio-temporal image alignment for inter-sequence error concealment." Proceedings of the 2010 17th IEEE International Conference on Image Processing, ICIP 2010, Hong Kong 2010. 445-448.

BibTeX: 

Last updated on 2018-15-12 at 20:50