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Méthodes de prétraitement pour les systèmes de codage vidéo linéaire basé SoftCast

Abstract : An original wireless video transmission scheme called SoftCast has been recently proposed to deal with the issues encounteredin conventional wireless video broadcasting systems such as cliff effect [1]. In [2], we analyzed and compared two simple pixel-preprocessing methods that help to increase the received video quality. In this paper, we evaluate two new preprocessing method operating in the frequency domain: OPA-SoftCast recently proposed in [3] and an intermediate original method offering the best compromise performance/additional bandwidth consumption. Methods are compared and evaluated under different channel signal-to-noise ratios using two metrics: Peak Signalto- Noise Ratio (PSNR) and Structural SIMilarity (SSIM). Simulation results clearly highlight the importance of the preprocessing block in a SoftCast wireless video transmission scheme. Depending on the video input characteristics and the preprocessing method used, an improvement of the PSNR score up to 4.75dB and SSIM index up to 0.1 can be observed.
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Submitted on : Wednesday, December 25, 2019 - 11:18:04 PM
Last modification on : Wednesday, March 23, 2022 - 3:51:15 PM
Long-term archiving on: : Thursday, March 26, 2020 - 12:36:44 PM


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  • HAL Id : hal-02423792, version 1


Anthony Trioux, François-Xavier Coudoux, Patrick Corlay, M Gharbi. Méthodes de prétraitement pour les systèmes de codage vidéo linéaire basé SoftCast. XXVIIème Colloque Francophone de Traitement du Signal et des Images, GRETSI 2019, Aug 2019, LILLE, France. ⟨hal-02423792⟩



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