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Communication Dans Un Congrès Année : 2021

Performance assessment of the adaptive GoP-size extension of the wireless softCast video scheme

Résumé

The SoftCast video transmission scheme has been proposed as a promising alternative to traditional video broadcasting systems in wireless error-prone environments. However, in its original form, the scheme may introduce annoying artifacts such as temporal quality variations or the so-called ghost effect. To eliminate this artifact as well as improving the received quality, we recently proposed an updated version of SoftCast: Adaptive GoP-size mechanism based on Content and Cut detection for SoftCast (AGCC-SoftCast) [1]. In this paper, we provide additional results and verify the validity of the algorithm considering different video content and resolution. We also analyze the behaviors of the scheme considering different type of cuts: 1) Abrupt cuts i.e., a cut that appear between two different scenes, 2) Soft cuts that may appear in a same scene and 3) Intraframe cuts that represents a shot change inside a limited portion of the frame. The performance of AGCC-SoftCast are compared to the original SoftCast scheme under different Channel Signal-to-Noise Ratios (CSNR) and Compression Ratios (CR). Traditional objective metrics are considered such as: the Peak Signal-to-Noise Ratio (PSNR), the Structural SIMilarity (SSIM) and the Multi-Scale SSIM (MS-SSIM). In addition, the recent Video Multi-method Assessment Fusion (VMAF) metric proposed by Netflix is also used. Regardless of the CSNR and CR values, results clearly highlight the importance of the AGCC algorithm in a SoftCast wireless video transmission scheme. Depending on the transmitted video content, results show that improvements up to 11.6dB in terms of PSNR and 67.45 in terms of VMAF can be obtained, especially at the cut boundaries.
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Dates et versions

hal-03336004 , version 1 (04-10-2021)

Identifiants

Citer

Anthony Trioux, François-Xavier Coudoux, Patrick Corlay, M Gharbi. Performance assessment of the adaptive GoP-size extension of the wireless softCast video scheme. 10th International Symposium on Signal, Image, Video and Communications, ISIVC 2020, postponed event, Apr 2021, Saint-Etienne, France. pp.1-6, ⟨10.1109/ISIVC49222.2021.9487549⟩. ⟨hal-03336004⟩
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