2026-03-12T13:16:19Z https://tokushima-u.repo.nii.ac.jp/oai

oai:tokushima-u.repo.nii.ac.jp:02008648 2025-04-28T05:09:17Z 1713853213384:1713853295607

Low-Complexity and Hardware-Friendly H.265/HEVC Encoder for Vehicular Ad-Hoc Networks Jiang, Xiantao Feng, Jie 10380130 宋, 天 ソウ, テン Song, Tian 宋 ソウ Song 天 テン Tian 70848522 片山, 貴文 カタヤマ, タカフミ Katayama, Takafumi 片山 カタヤマ Katayama 貴文 タカフミ Takafumi open access This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). high efficiency video coding low complexity hardware friendly vehicular ad-hoc networks Real-time video streaming over vehicular ad-hoc networks (VANETs) has been considered as a critical challenge for road safety applications. The purpose of this paper is to reduce the computation complexity of high efficiency video coding (HEVC) encoder for VANETs. Based on a novel spatiotemporal neighborhood set, firstly the coding tree unit depth decision algorithm is presented by controlling the depth search range. Secondly, a Bayesian classifier is used for the prediction unit decision for inter-prediction, and prior probability value is calculated by Gibbs Random Field model. Simulation results show that the overall algorithm can significantly reduce encoding time with a reasonably low loss in encoding efficiency. Compared to HEVC reference software HM16.0, the encoding time is reduced by up to 63.96%, while the Bjontegaard delta bit-rate is increased by only 0.76–0.80% on average. Moreover, the proposed HEVC encoder is low-complexity and hardware-friendly for video codecs that reside on mobile vehicles for VANETs. MDPI 2019-04-24 eng journal article VoR 350852 https://tokushima-u.repo.nii.ac.jp/records/2008648 https://doi.org/10.3390/s19081927 10.3390/s19081927 14248220 Sensors 19 8 1927 https://tokushima-u.repo.nii.ac.jp/record/2008648/files/sensors_19_8_1927.pdf application/pdf 1.61 MB 2021-08-26