Real-time error concealing bitstream adaptation methods for SVC in IPTV systems
| العنوان: | Real-time error concealing bitstream adaptation methods for SVC in IPTV systems |
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| المؤلفون: | Pedro Debevere, Peter Lambert, Danny De Vleeschauwer, Rik Van de Walle, Jean-François Macq, Jan De Cock, N. Degrande |
| المصدر: | Journal of Real-Time Image Processing. 4:79-90 |
| بيانات النشر: | Springer Science and Business Media LLC, 2008. |
| سنة النشر: | 2008 |
| مصطلحات موضوعية: | Computer science, business.industry, Real-time computing, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, IPTV, Data_CODINGANDINFORMATIONTHEORY, Scalable Video Coding, Computer graphics, Error concealment, Packet loss, Digital television, Bitstream, business, Information Systems, Coding (social sciences) |
| الوصف: | The current heterogeneity in networks and devices demands for a high degree of flexibility in IPTV systems for digital television. A scalable video coding scheme (in this paper we focus on H.264/AVC’s scalable video coding extension SVC) accommodates this flexibility from the coding point of view. Because the IP-based network delivery chain in IPTV systems may suffer from packet loss (having a severe impact on the visual quality) it is necessary to provide means for error concealment. In this paper we propose a novel method that performs adaptation on impaired SVC bitstreams so that the resulting adapted bitstream is compliant to the SVC specification and that the reconstruction result at the decoder is equivalent compared to the approach where the error concealment is implemented in the decoder itself. The adapted bitstreams have a significantly higher visual quality while our approach does not require any modification to existing SVC-compliant decoders. The results of several experiments show that the proposed method is extremely fast (over 900 frames/s) and that it introduces a negligible overhead in terms of bit rate (ca. 0.02%). |
| تدمد: | 1861-8219 1861-8200 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::50bd11c047ca8a45476b513c924edb46 https://doi.org/10.1007/s11554-008-0104-y |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........50bd11c047ca8a45476b513c924edb46 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 18618219 18618200 |
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