Performance evaluation of feature-based image alignment techniques for inter-sequence error concealment

Tröger T, Hirschbeck M, Kaup A (2011)

Publication Language: English

Publication Status: Published

Publication Type: Conference contribution, Conference Contribution

Publication year: 2011

Article Number: 5936547

Event location: Dortmund DE

ISBN: 9783000348648

URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=79960690775∨igin=inward

Abstract

Mobile reception of digital TV signals is typically error-prone. In multi-broadcast scenarios, inter-sequence error concealment replaces lost image blocks of distorted TV signals with error-free ones of low-resolution reference signals. As the latter are typically delayed, scaled and possibly cropped, however, spatio-temporal image alignment is crucial. Up to now, spatial alignment parameters have been estimated with moderate computational complexity by matching of the widely-used scale-invariant features. In this paper, more recent features from literature are evaluated to further reduce the complexity of the alignment step. Also, one novel feature transform is proposed. Simulations show that the well-known speeded-up robust features can reduce the complexity by 12%. However, the reconstruction quality is lowered due to the misalignment of single frames. The novel transform achieves a speed gain of 11%, but does not decrease the reconstruction quality significantly. © 2011 Informatik Centrum.

Authors with CRIS profile

Tobias Tröger Lehrstuhl für Multimediakommunikation und Signalverarbeitung (LMS) Martin Hirschbeck Lehrstuhl für Informationsübertragung Andre Kaup Lehrstuhl für Multimediakommunikation und Signalverarbeitung (LMS)

How to cite

APA:

Tröger, T., Hirschbeck, M., & Kaup, A. (2011). Performance evaluation of feature-based image alignment techniques for inter-sequence error concealment. In Proceedings of the 2011 14th ITG Conference on Electronic Media Technology, CEMT 2011. Dortmund, DE.

MLA:

Tröger, Tobias, Martin Hirschbeck, and André Kaup. "Performance evaluation of feature-based image alignment techniques for inter-sequence error concealment." Proceedings of the 2011 14th ITG Conference on Electronic Media Technology, CEMT 2011, Dortmund 2011.

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