Lee W.S., Pickering M.R., Frater M.R. and Arnold J.F., Error Resilience in Video and Multiplexing Layers for Very Low Bit-Rate Video Coding Systems, IEEE Journal on Selected Areas in Communications,vol. 15, pp. 17641774, December 1997.  Home/Search   Document Details and Download   Summary   Related Articles   Check

.... are many approaches to make video streaming more resilient to channel degradations, such as (i) error correction and data interleaving [1] typically Forward Error Correction (FEC) ii) error detection and localization at channel coding level [1] and (iii) resynchronization and data partitioning [2]. These approaches are designed to detect and correct the errors before streams are passed to video decoder, without interpreting the syntax of data. However, undetected (transmission) errors remain to exist in the compressed bit stream that is offered to the decoder. For that reason, also the ....

. Wee Sun Lee, Pickering, M.R., Frater, M.R., Arnold, J.F, "Error resilience in video and multiplexing layers for very low bit-rate video coding systems", Selected Areas in Communications, IEEE Journal on Volume: 15 9, Dec. 1997

....all frames in the group of pictures. Similarly, an error in a P picture will affect the related P and B pictures, while B picture errors are isolated. Therefore, effective concealment of lost data in Iand P pictures to avoid error propagation is of critical importance. 3. 3 Error concealment [9, 10] These techniques attempt to conceal errors by taking into account of the remaining spatial correlation in the same frame and temporal correlation in the previous frame of a video sequence. 3.3.1 Temporal and spatial concealment In areas of the picture that do not change very much with time, it ....

W. S. Lee, M. R. Pickering, M. R. Frater, and J. F. Arnold, Error Resilience in Video and Multiplexing Layers for Very Low Bit-Rate Video Coding Systems, IEEE Journal on Selected Area in Communications, Vol. 15, No. 9, pp. 1764-1774, December 1997.

.... video is highly sensitive to data loss (see Section II) Data loss propagates within the sequence and may thus become very annoying to the end user [5] Error resilience schemes have been introduced to limit these impairments [6] These schemes could be roughly classified into three categories [7]. First, error concealment techniques try to estimate missing video data using information available at the receiver. However, even for the most sophisticated concealment algorithms [8] 10] important loss of data may lead to annoying degradation. It becomes, therefore, mandatory to minimize ....

W. S. Lee, M. R. Pickering, M. R. Frater, and J. F. Arnold, "Error resilience in video and multiplexing layers for very low bit-rate video coding systems," IEEE J. Select. Areas Commun., vol. 15, pp. 1764--1774, Dec. 1997.

.... video is highly sensitive to data loss (see Section II) Data loss propagates within the sequence and may thus become very annoying for the end user [5] Error resilience schemes have been introduced to limit these impairements [6] These schemes could be roughly classi ed into three categories [7]. In the rst category the concealment techniques try to estimate missing video data using information available at the receiver. The simplest methods would be to replace the missing block with a similar block. The motion vectors could also be approximated by those of the surrounding video ....

Lee W.S., Pickering M.R., Frater M.R. and Arnold J.F. Error Resilience in Video and Multiplexing Layers for Very Low Bit-Rate Video Coding Systems. IEEE Journal on Selected Areas in Communications, 15(9):1764{ 1774, December 1997.

....the GOB correctly in place in the video sequenceand use the appropriate variable length code table for decoding the GOB. The synchronization marker used is also different from the one used in H.263. It consist of parity bits which are used for both synchronization purposes and for detecting errors [6]. The synchronization marker is further described in section 3.2. The remaining syntax is the same as that used in H.263 except where indi cated. Fixed quantization parameters (variable bit rate) are used throughout to simplify our experiments. 2.1 Concealment based Protection For each frame, ....

....the bitstream are usually not detected immediately, this often results in obnoxious artifacts appearing in the video. These artifacts persist until the relevant macroblocks are intra updated because prediction from the previous frames is used. This results in poor objective and subjective quality [6]. We use the same error detection scheme in all our codecs (concealment based and intra codecs) We take the simple approach of assumming that all the macroblocks between the two resynchronization points are corrupted when an error is detected between the two resynchronization points. This ....

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W. S. Lee, M. R. Pickering, M. R. Frater, and J. F. Arnold. Error resilience in video and multiplexing layers for very low bit-rate video coding systems. IEEE Journal on selected areas in communications, 1997. Accepted for publication.

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Lee W.S., Pickering M.R., Frater M.R. and Arnold J.F., Error Resilience in Video and Multiplexing Layers for Very Low Bit-Rate Video Coding Systems, IEEE Journal on Selected Areas in Communications,vol. 15, pp. 17641774, December 1997.

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W. S. Lee, M. R. Pickering, M. R. Frater, and J. F. Arnold, "Error resilience in video and multiplexing layers for very low bit-rate video coding systems," IEEE Journal on Selected Areas in Communications, vol. 15, no. 9, pp.1764-74, Dec. 1997.

No context found.

Lee W.S., Pickering M.R., Frater M.R. and Arnold J.F., \Error Resilience in Video and Multiplexing Layers for Very Low Bit-Rate Video Coding Systems," IEEE Journal on Selected Areas in Communications 15, pp. 1764{ 1774, December 1997.

No context found.

W. S. Lee, M. R. Pickering, M. R. Frater, and J. F. Arnold, "Error resilience in video and multiplexing layers for very low bit-rate video coding systems," IEEE Journal on Selected Areas in Communications, vol. 15, no. 9, pp.1764-74, Dec. 1997.

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