Fading Techniques for Error Concealment in Block-Based Video Decoding Systems

Friebe, Markus; Kaup, André

doi:10.1109/tbc.2006.889688

Cited by 31 publications

(8 citation statements)

References 10 publications

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“…Advanced error-resilience video coding techniques can be used to mitigate the effect of packet losses [12] [13]. These techniques work well with light packet losses, but may not with bursty packet losses.…”

Section: B Error-resilience Video Codingmentioning

confidence: 99%

Early Packet Loss Feedback for WebRTC-Based Mobile Video Telephony over Wi-Fi

Ma¹,

Chen²,

Veer³

et al. 2014

2015 IEEE Global Communications Conference (GLOBECOM)

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We consider improving the performance of WebRTC-based mobile video telephony over a Wi-Fi link, which is susceptible to channel-caused or congestion-caused packet losses. Existing reactive packet loss mitigation mechanisms rely on end-to-end feedback, which takes about one round-trip time (RTT), causing excessive artifacts or video freeze in the received video in typical network scenarios. To address this problem, we propose early packet loss feedback (EPLF), where the MAC layer of the local Wi-Fi link sends a spoofed NACK to the Realtime Transport Protocol (RTP) layer if and only if the transmission failure is caused by a channel error, and the NACK immediately triggers an RTP layer retransmission. This significantly reduces the loss-feedback delay while improving the effectiveness of the RTP-layer congestion control. Analytic modeling and experimental results show that EPLF almost completely eliminates channelcaused video freezes.

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Section: B Error-resilience Video Codingmentioning

confidence: 99%

Early Packet Loss Feedback for WebRTC-Based Mobile Video Telephony over Wi-Fi

Ma¹,

Chen²,

Veer³

et al. 2014

2015 IEEE Global Communications Conference (GLOBECOM)

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“…Moreover, this scheme attempts to preserve the maximum similarity in the lost area boundaries. This attribute can be used in conjunction with a proper temporal error concealment algorithm and a fading method like the method proposed in [14] to enhance temporal error concealment. This scheme has three main steps as described in the following subsections.…”

Section: Proposed Schemementioning

confidence: 99%

Intra-frame loss concealment based on directional extrapolation

Qaratlu

Ghanbari

2011

Signal Processing: Image Communication

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“…The measure is defined as the ratio between the number of changed MVs and the total number of MVs within a P-frame. That is (15) where denotes the cardinality of the argument, denotes the MVs with data embedding and denotes the MVs without data embedding. The average value of is found to be 1.65% when it is evaluated at the video sequence "Foreman", and 3.83% for the video sequence "Coastguard".…”

Section: A Embedding Distortionmentioning

confidence: 99%

“…In the second mode, the packets are constructed following the FMO type 1 pattern [14]. In each case, the performance is measured in terms of PSNR for the Y components and compared to the corresponding values obtained by using the reference algorithm in JM 12.0, as well as the spatial-temporal methods in [5] (the mode selection method), [7] (the edge weighted method), and [15] (the fading method). For a fair comparison, the same spatial processing and interpolation as in the fading method is applied after the temporal concealment.…”

Section: Performance Of Concealmentmentioning

confidence: 99%

A Temporal Approach for Improving Intra-Frame Concealment Performance in H.264/AVC

Leung

2009

IEEE Trans. Circuits Syst. Video Technol.

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The highly error-prone nature of wireless environments and limited computational power of mobile devices necessitates the implementation of robust yet simple error concealment in H.264/AVC. In this paper, we propose to use data hiding to facilitate the error concealment on intra-coded frames that utilizes the temporal redundancy in a wireless video bitstream. At the encoder side, the motion vector of a macroblock (MB) is encoded and imperceptibly embedded into other MB within the same intra-frame. If an MB is found missing at the decoder, the embedded information will be retrieved from the corresponding MB for the recovery of the lost MB. In order to isolate erroneous MBs caused by packet loss, a block shuffling scheme is applied. It is shown that the proposed method is able to shift the computation burden from decoder to encoder, and reduce the computation complexity of conventional error concealment methods. In addition, due to the use of real motion vectors for temporal concealment, the proposed method provides improved picture quality over the reference methods in H.264/AVC. Index Terms-Error concealment, video transmission, wireless video.

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Fading Techniques for Error Concealment in Block-Based Video Decoding Systems

Cited by 31 publications

References 10 publications

Early Packet Loss Feedback for WebRTC-Based Mobile Video Telephony over Wi-Fi

Early Packet Loss Feedback for WebRTC-Based Mobile Video Telephony over Wi-Fi

Intra-frame loss concealment based on directional extrapolation

A Temporal Approach for Improving Intra-Frame Concealment Performance in H.264/AVC

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