Inter-Sequence Error Concealment Techniques for Multi-Broadcast TV Reception

Tröger, Tobias; Kaup, André

doi:10.1109/tbc.2011.2173813

Cited by 10 publications

(12 citation statements)

References 58 publications

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“…Thus, four generation models arise each considering seven qualities (CIF/R, CIF/RC, QVGA/R and QVGA/RC). Intensity-based ISEC is performed in two stages applying numerical optimization as proposed in [8]. Keypoints and descriptors of feature-based ISEC are determined by using a Matlab implementation of Vedaldi [9] which is adapted to our algorithm.…”

Section: Simulation Setupmentioning

confidence: 99%

“…Feature-based ISEC utilizing scale-invariant features (ISEC-SIFT) is denoted by solid lines. Dashed lines indicate intensity-based ISEC utilizing numerical optimization (ISEC-NOPT, [4]). In general, the curves are very similar for both approaches.…”

Section: Reconstruction Qualitymentioning

confidence: 99%

“…With Inter-Sequence Error Concealment (ISEC) [4], latest research gave rise to a novel class of error concealment techniques for multi-broadcast-receivers. ISEC reconstructs distorted video signals Cropping occurs when both signals show different image sections of the same TV program.…”

Section: Introductionmentioning

confidence: 99%

“…In 2008, we introduced an intensity-based approach for image alignment in the ISEC scheme utilizing a numerical optimization technique ( [4], [5]). This algorithm can outperform conventional spatio-temporal error concealment techniques by up to 15 dB PSNR Y in terms of reconstruction quality.…”

Section: Introductionmentioning

confidence: 99%

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

Tröger

Kaup

2010

2010 IEEE International Conference on Image Processing

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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 intensitybased approach utilizing a numerical optimization technique shows supreme reconstruction quality outperforming state-of-the-art concealment methods by up to 15 dB PSNR Y . 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 PSNR Y .

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Section: Simulation Setupmentioning

confidence: 99%

Section: Reconstruction Qualitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Tröger

Kaup

2010

2010 IEEE International Conference on Image Processing

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“…We call this technique Inter-Sequence Error Concealment (ISEC). ISEC was introduced in 2008 for the reconstruction of a distorted DVB-T signal using an already synchronized DVB-H signal as a reference [8]. The algorithm can outperform spatial and temporal state-of-the-art techniques by up to 15 dB in terms PSNRY.…”

Section: Introductionmentioning

confidence: 99%

Spatially refined inter-sequence error concealment for a multi-broadcast receiver using frequency selective approximation

Tröger

Seiler

Kaup

2010

Proceedings of the 18th ACM International Conference on Multimedia

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Mobile reception of digital TV often suffers from severe signal degradations. Inter-sequence error concealment reconstructs lost image blocks of a distorted high-resolution TV signal by inserting corresponding error-free blocks from a low-resolution reference TV signal. It is well-suited for application in future automotive multi-broadcast receivers and can outperform state-of-the-art methods by up to 15 dB PSNRY depending on the quality of the reference signal. In this contribution, we show that inter-sequence error concealment can be improved by approximating inserted blocks jointly with neighboring pixels according to a well-known frequency selective method. The reconstruction quality can be significantly increased especially in case of low-bitrate reference signals. Inserted blocks can be further refined also for high bitrates. On average, a gain of 1.7 dB PSNRY can be achieved. The peak gain which is evaluated on frame basis even reaches 5.6 dB PSNRY.

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Switching error concealment algorithm based on optimal decisions for performance and complexity

Lin

Chen

Fan

et al. 2015

Multimed Tools Appl

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Inter-Sequence Error Concealment Techniques for Multi-Broadcast TV Reception

Cited by 10 publications

References 58 publications

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

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

Spatially refined inter-sequence error concealment for a multi-broadcast receiver using frequency selective approximation

Switching error concealment algorithm based on optimal decisions for performance and complexity

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