Comparison of Error Protection Methods for Audio-Video Broadcast over DVB-H

Hannuksela, Miska M.; Vadakital, Vinod Kumar Malamal; Jumisko-Pyykkö, Satu

doi:10.1155/2007/71801

Cited by 21 publications

(20 citation statements)

References 10 publications

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“…Special attention has also been paid to sample selection in one of the reported studies, in which soccer fans corresponding to potential viewers were selected [ [35]]. Later, Jumisko-Pyykkö et al [26] and Hannuksela et al [16] have also measured retrospectively acceptability nominally parallel to satisfaction, following some principles from ACR in transmission quality measures with 60-second-long stimuli material.…”

Section: User-oriented Approachmentioning

confidence: 99%

“…Measuring acceptability provides an anchor of lowest useful quality level for novel techniques that have not been examined perceptually [16], [26], [27]. , the participants gave an overall satisfaction score of quality on a continuous and unlabelled 11-point scale [43].…”

Section: Test Proceduresmentioning

confidence: 99%

“…Most of the recent studies, such as [11], [13], [14], [23], [24], [31], [32], [33], [35], [44] have examined the impact of compression in relation to experienced quality, whereas there are fewer studies analyzing the impact of transmission errors to perceived quality [14], [16], [26], [27].…”

Section: Introductionmentioning

confidence: 99%

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Does context matter in quality evaluation of mobile television?

Jumisko-Pyykkö

Hannuksela

2008

Proceedings of the 10th International Conference on Human Computer Interaction With Mobile Devices and Services

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Subjective quality evaluation is used to optimize the produced audiovisual quality from fundamental signal processing algorithms to consumer services. These studies typically follow the basic principles of controlled psychoperceptual experiments. However, when compromising compression and transmission parameters for consumer services, the ecological validity of conventional quality evaluation methods can be questioned. To tackle this, we firstly present a novel user-oriented quality evaluation method for mobile television in its usage contexts. Secondly, we present the results of an experiment conducted with 30 participants comparing acceptability and satisfaction of quality as well as goals of viewing in three mobile contexts and under four different residual transmission error rates, when the participants also performed simultaneous assessment tasks. Finally, we compare the results with a previous laboratory experiment. The studied error rates impacted negatively on all measured tasks with some contextual differences. Moreover, the evaluations were more favorable and less discriminate in the mobile contexts compared to the laboratory.

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Section: User-oriented Approachmentioning

confidence: 99%

Section: Test Proceduresmentioning

confidence: 99%

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Does context matter in quality evaluation of mobile television?

Jumisko-Pyykkö

Hannuksela

2008

Proceedings of the 10th International Conference on Human Computer Interaction With Mobile Devices and Services

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“…A Gilbert-Elliot (GE) model is used as statistical model for simulation of burst losses in wireless channels [13], where the receiver is moving with a certain velocity. The media stream is mapped on transmission blocks (TBs) each of size 186 bytes.…”

Section: B Layer-aware Raptor In Receiver-driven Layered Multicastmentioning

confidence: 99%

Multidimensional Layered Forward Error Correction Using Rateless Codes

Hellge

Schierl

Wiegand

2008

2008 IEEE International Conference on Communications

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Abstract-Modern layered or scalable video coding technologies generate a video bit stream with various inter layer dependencies due to references between the layers. This work proposes a method for extending forward error correction (FECs) codes following dependency structures within the media. The proposed layer-aware FEC (L-FEC) generates repair symbols so that protection of less important dependency layers can be used with protection of more important layers for combined error correction. The L-FEC approach is exemplary applied to rateless LT and Raptor codes. Gains for more important layers can be achieved without increasing the total FEC code rate. The performance gain of the L-FEC is shown by simulation results with receiver-driven layered multicast transmission using scalable video coding (SVC) with a Raptor-based L-FEC.

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“…Moreover, channel bitrate budget limitations might constrain the resources available for protection purposes. Hence, unequal error protection (UEP) schemes are usually introduced to face the unreliability of the channel [3], These smart schemes present strategies to decide which part of the data should be protected and how, so that resource availability is not exceeded and the overall quality after decoding is kept as high as possible.…”

Section: Introductionmentioning

confidence: 99%

Adaptive protection scheme for MVC-encoded stereoscopic video streaming in IP-based networks

Díaz

Cabrera

Jaureguizar

et al. 2012

2012 Visual Communications and Image Processing

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We present an adaptive unequal error protection (UEP) strategy built on the 1 -D interleaved parity Application Layer Forward Error Correction (AL-FEC) code for protecting the transmission of stereoscopic 3D video content encoded with Multiview Video Coding (MVC) through IP-based networks. Our scheme targets the minimization of quality degradation produced by packet losses during video transmission in time-sensitive application scenarios. To that end, based on a novel packet-level distortion model, it selects in real time the most suitable packets within each Group of Pictures (GOP) to be protected and the most convenient FEC technique parameters, i.e., the size of the FEC generator matrix. In order to make these decisions, it considers the relevance of the packet, the behavior of the channel, and the available bitrate for protection purposes. Simulation results validate both the distortion model introduced to estimate the importance of packets and the optimization of the FEC technique parameter values.

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Comparison of Error Protection Methods for Audio-Video Broadcast over DVB-H

Cited by 21 publications

References 10 publications

Does context matter in quality evaluation of mobile television?

Does context matter in quality evaluation of mobile television?

Multidimensional Layered Forward Error Correction Using Rateless Codes

Adaptive protection scheme for MVC-encoded stereoscopic video streaming in IP-based networks

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