Unequal Error Protection Technique for ROI Based H.264 Video Coding

Arachchi, Hemantha Kodikara; Fernando, W.A.C.; Panchadcharam, S.; Weerakkody, W.A.R.J.

doi:10.1109/ccece.2006.277430

Cited by 16 publications

(10 citation statements)

References 2 publications

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“…One of the basic elements of the H.264 video sequence is a slice, which contains a group of macroblocks. Each picture can be subdivided into one or more slices and each slice can be provided with increased importance as the basic spatial segment, which can be encoded independently from its neighbors [30][31][32][33] (the slice coding is one of the techniques used in H.264 for transmission). Usually, slices are provided in a raster scan order with continuously ascending addresses; on the other hand, the FMO is an advanced tool of H.264 that defines the information of slice groups and enables to assign different macroblocks to slice groups, according to several predefined patterns (types), as schematically presented in Figure 5.…”

Section: Roi Scalability By Using the Flexible Macroblock Orderingmentioning

confidence: 99%

Efficient Region-of-Interest Scalable Video Coding with Adaptive Bit-Rate Control

Grois

Hadar

2013

Advances in Multimedia

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This work relates to the regions-of-interest (ROI) coding that is a desirable feature in future applications based on the scalable video coding, which is an extension of the H.264/MPEG-4 AVC standard. Due to the dramatic technological progress, there is a plurality of heterogeneous devices, which can be used for viewing a variety of video content. Devices such as smartphones and tablets are mostly resource-limited devices, which make it difficult to display high-quality content. Usually, the displayed video content contains one or more ROI(s), which should be adaptively selected from the preencoded scalable video bitstream. Thus, an efficient scalable ROI video coding scheme is proposed in this work, thereby enabling the extraction of the desired regions-of-interest and the adaptive setting of the desirable ROI location, size, and resolution. In addition, an adaptive bit-rate control is provided for the region-of-interest scalable video coding. The performance of the presented techniques is demonstrated and compared with the joint scalable video model reference software (JSVM 9.19), thereby showing significant bit-rate savings as a tradeoff for the relatively low PSNR degradation.

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Section: Roi Scalability By Using the Flexible Macroblock Orderingmentioning

confidence: 99%

Efficient Region-of-Interest Scalable Video Coding with Adaptive Bit-Rate Control

Grois

Hadar

2013

Advances in Multimedia

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“…In addition, because we are able to guarantee partition A data, more advanced features in the H.264/AVC standard can be implemented which would otherwise be inadvisable in error prone networks. We include in our results the use of B-frames which other research has not considered [4] [8] or discussed [11]. We show that when protecting partition A, the use of B-frames provide significant benefits such as better video quality and compression rates.…”

Section: Hybrid Tcp/udpmentioning

confidence: 89%

HYBRID TCP/UDP video transport for H.264/AVC content delivery in burst loss networks

Porter

Peng

2011

2011 IEEE International Conference on Multimedia and Expo

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In this paper we propose a hybrid TCP/UDP transport, specifically for H.264/AVC encoded video, as a compromise between the delay-prone TCP and the loss-prone UDP. When implementing the hybrid approach, we argue that the playback at the receiver often need not be 100% perfect, provided that a certain level of quality is assured. Reliable TCP is used to transmit and guarantee delivery of the most important packets. This allows use of additional features in the H.264/AVC standard which simultaneously provide an enhanced playback quality, in addition to a reduction in throughput. These benefits are demonstrated through experimental results using a test-bed to emulate the hybrid proposal. We compare the proposed system with other protection methods, such as FEC, and in one case show that for the same bandwidth overhead, FEC is unable to match the performance of the hybrid system in terms of playback quality. Furthermore, we measure the delay associated with our approach, and examine its potential for use as an alternative to the conventional methods of transporting video by either TCP or UDP alone.

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“…For example, suppose that there are 15 packets belonging to one RS (15, 11) BOP transmitted over a lossy network, and this code can recover up to 4 burst packet losses. But if those 15 packets are used to form two RS (7,5) BOPs (with one packet unused), they can only recover up to 2 burst packet losses per BOP. Thus, BOPs with large sizes are more robust than the small ones.…”

Section: A System Descriptionmentioning

confidence: 99%

“…Several protection schemes for H.264/AVC video transmission were proposed, but those schemes only consider a single aspect, i.e. [4], [5], [6] are based on Flexible Macroblock Ordering (FMO) and [7] only considers the data partitioning of H.264/AVC. By analyzing the existing unequal importance settings in H.264/AVC coding schemes, and exploiting the H.264/AVC data partition resilience tool, we present a hierarchical unequal loss protection (HULP) scheme that is implemented over an emulation testbed.…”

Section: Introductionmentioning

confidence: 99%

A Hierarchical Unequal Packet Loss Protection Scheme for Robust H.264/AVC Transmission

Zhang

Peng

et al. 2009

2009 6th IEEE Consumer Communications and Networking Conference

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Abstract-In this paper, we are concerned with robust H.264/AVC video transmission over lossy packet networks and present a hierarchical unequal packet loss protection (HULP) scheme in a transmission system that efficiently combines erasure coding, H.264/AVC error resilience techniques and importance measures in video coding schemes. The importance of the video stream packets is distinguished by three criteria: the frame sequence number in a group of pictures (GOP), the per-frame bitrate and the H.264/AVC data partition type. Using a fixed amount of redundancy, more important packets of a video stream are protected with a more powerful erasure code than the less important packets. We demonstrate the effectiveness of this approach by system implementation and performance evaluation. In the presence of packet loss, we show that the received video quality, as measured by PSNR, is significantly improved when the HULP scheme is used. More importantly, in our experiments, HULP can achieve higher PSNR values and better user perceived quality, but requiring less redundancy, than equal loss protection (ELP) schemes.

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Unequal Error Protection Technique for ROI Based H.264 Video Coding

Cited by 16 publications

References 2 publications

Efficient Region-of-Interest Scalable Video Coding with Adaptive Bit-Rate Control

Efficient Region-of-Interest Scalable Video Coding with Adaptive Bit-Rate Control

HYBRID TCP/UDP video transport for H.264/AVC content delivery in burst loss networks

A Hierarchical Unequal Packet Loss Protection Scheme for Robust H.264/AVC Transmission

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