Adaptive scheme for Internet video transmission

Auwera

Signal Processing: Image Communication

2007

Section: Comparison Of Adaptive Switching Of Pfgs Streams With Simulcmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adaptive bitstream switching of scalable video

Auwera

Signal Processing: Image Communication

2007

“…13 and, hence, the coding scheme can be alternated between single layer coding and FGS coding schemes. Additional details of designing this neural network can be found in [35].…”

Section: Network Performance Comparison Between Single Layer and Fmentioning

confidence: 99%

Adaptive Video Transmission Schemes Using MPEG-7 Motion Intensity Descriptor

IEEE Trans. Circuits Syst. Video Technol.

Panchanathan

2006

Self Cite

Abstract-A variety of error resilience and scalable coding techniques have recently been proposed to facilitate the delivery of video over best-effort networks; a common drawback of these techniques is reduced compression efficiency. Also, MPEG-7 descriptors have recently been developed for the purpose of indexing. In this paper, we propose to employ MPEG-7 descriptors to improve the quality of the video delivered over best-effort networks. In particular, we propose a video transmission system that uses the motion activity descriptors to ensure robust video transmission. A novel motion activity extraction technique is proposed, which relies on a neural network approach. By considering several low-level visual features, our proposed extraction approach achieves high consistency with subjective evaluations of motion activities. In order to demonstrate the benefits of the proposed transmission system, we develop a selective packet dropping scheme that can be applied in case of network congestion. Simulations demonstrate that the reconstruction quality of the proposed congestion scheme can surpass conventional schemes by 1.2 dB. The network performance of the proposed transmission system when video sequences are coded into single layer or scalable layers is presented. We also present a transcoding scheme that achieves the optimal reconstructed quality by exploiting the motion activities of the underlying video sequence.

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“…These include the need to encode an impractically large number of versions (on the order of several tens of versions are required to adapt a Mbps video at the granularity of 100 kbps) and no flexibility to scale down the bit rate/video quality of a stream during network transport, unless typically complex and computationally demanding transcoding is performed at intermediate network nodes. Bitstream switching can also be applied over versions of different coding schemes, but an increase in the computational complexity of video decoding is inevitable [18].…”

Section: Introductionmentioning

confidence: 99%

Adaptive bitstream switching of pre-encoded PFGS video

Proceedings of the ACM Workshop on Advances in Peer-to-Peer Multimedia Streaming

Panchanathan

2005