Tröger T, Kaup A (2011)
Publication Language: English
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2011
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Book Volume: 57
Pages Range: 777-793
Article Number: 6064914
Journal Issue: 4
Mobile reception of digital TV signals often suffers from lost slices due to suboptimal channel characteristics. In this contribution we propose novel inter-sequence error concealment techniques which reconstruct lost blocks of distorted high-resolution TV signals by inserting error-free blocks of low-resolution reference signals. The proposed methods are well-suited for future automotive multi-broadcast receivers. As the reference signals are typically delayed, scaled and possibly cropped versions of the distorted TV signals, spatio-temporal image alignment is a crucial point. We first focus on pixel-based alignment utilizing a numerical optimization scheme. To reduce complexity a feature-based approach is introduced alternatively taking advantage of the scale-invariant feature transform. Simulations show that the proposed techniques can achieve supreme reconstruction quality outperforming conventional techniques by up to 15.0 dB PSNR. The pixel-based approach mostly reaches the maximum reconstruction quality for both raw and compressed video signals. Feature-based concealment performs slightly worse but reduces the computation time by a factor of up to 36.6 at a maximum loss of 1.0 dB. A novel hybrid concealment technique combining the proposed methods with a temporal approach further increases the reconstruction quality. Applying one simple and one sophisticated mode selection scheme, a gain of 3.2 dB and 4.6 dB can be achieved, respectively. © 2011 IEEE.
APA:
Tröger, T., & Kaup, A. (2011). Inter-sequence error concealment techniques for multi-broadcast TV reception. IEEE Transactions on Broadcasting, 57(4), 777-793. https://dx.doi.org/10.1109/TBC.2011.2173813
MLA:
Tröger, Tobias, and André Kaup. "Inter-sequence error concealment techniques for multi-broadcast TV reception." IEEE Transactions on Broadcasting 57.4 (2011): 777-793.
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