A Comparative Study of the Whitening Methods in Linear Video Coding and Transmission Schemes
| Autor: | Hind Kanj, Anthony Trioux, Francois-Xavier Coudoux, Mohamed Gharbi, Patrick Corlay, Michel Kieffer |
|---|---|
| Přispěvatelé: | Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), COMmunications NUMériques - IEMN (COMNUM - IEMN), INSA Institut National des Sciences Appliquées Hauts-de-France (INSA Hauts-De-France), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Université catholique de Lille (UCL)-Université catholique de Lille (UCL)-Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA), Laboratoire des signaux et systèmes (L2S), CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), This work was funded by the ANR AAPG2020 national fund as a part of the ZL-LVC project (ANR-20-CE25-0014), ANR-20-CE25-0014,ZL-LVC,Vers un schéma de codage vidéo linéaire sans latence(2020) |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | 2022 11th International Symposium on Signal, Image, Video and Communications (ISIVC) 2022 11th International Symposium on Signal, Image, Video and Communications (ISIVC), May 2022, El Jadida, Morocco. pp.1-6, ⟨10.1109/ISIVC54825.2022.9800738⟩ |
| DOI: | 10.1109/ISIVC54825.2022.9800738⟩ |
| Popis: | International audience; Linear Video Coding and Transmission (LVCT) schemes, pioneered by the SoftCast architecture, have been recently proposed as an alternative solution for wireless broadcast applications where users may experience severe channel quality fluctuations. LVCT schemes offer a graceful video quality adaptation to the user experienced channel quality. This is made possible by relying on linear operators only (decorrelation transform, power allocation, whitening). The LVCT whitening process aims at reducing the impact of slice loss in presence of fades. It is mainly performed by Hadamard transform which is not adapted to all input sizes. Although alternatives to the Hadamard transform have been proposed in the literature, no performance comparison has been performed. In this paper, we compare the performance of SoftCast using three different whitening matrices, namely, Hadamard, Inverse Discrete Cosine Transform (IDCT) and Random matrices. Three scenarios are considered for the comparison: no packet loss, random packet losses and bursty packet losses. Simulation results confirm that these matrices offer similar reconstructed video quality in a lossless scenario, while whitening using a random orthogonal matrix outperforms whitening using Hadamard or IDCT matrices in all lossy scenarios. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|