Titre :

A Comparative Study of the Whitening Methods in Linear Video Coding and Transmission Schemes

Auteur(s) :

Kanj, Hind [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Trioux, Anthony [Auteur correspondant]
COMmunications NUMériques - IEMN [COMNUM - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Coudoux, Francois-Xavier [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
COMmunications NUMériques - IEMN [COMNUM - IEMN]
Gharbi, Mohamed [Auteur]
COMmunications NUMériques - IEMN [COMNUM - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Corlay, Patrick [Auteur]
COMmunications NUMériques - IEMN [COMNUM - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Kieffer, Michel [Auteur]
Laboratoire des signaux et systèmes [L2S]

Titre de la manifestation scientifique :

2022 11th International Symposium on Signal, Image, Video and Communications (ISIVC)

Ville :

El Jadida

Pays :

Maroc

Date de début de la manifestation scientifique :

2022-05-18

Éditeur :

IEEE

Date de publication :

2022

Mot(s)-clé(s) en anglais :

Wireless Video Transmission
Linear Video Coding and Transmission (LVCT)
SoftCast
Hadamard
Packet loss

Discipline(s) HAL :

Sciences de l'ingénieur [physics]

Résumé en anglais : [en]

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 ...
Lire la suite >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.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Projet ANR :

Vers un schéma de codage vidéo linéaire sans latence

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL