电子学报2024，Vol.52Issue(4)：1144-1154,11.DOI:10.12263/DZXB.20230788
面向全息视频通信的自适应分块传输方法
Towards Holographic Video Communications:An Adaptive Tiling Solution
摘要
Abstract
Tile-based methods that use the divide-and-conquer and on-demand transmission techniques are promising to handle 3D holographic video streaming.However,the current solutions either lack an adaptive tiling scheme or cannot apply to mobile real-time scenarios.In this paper,we propose VVSTiler(Volumetric Video Streaming Tiling selector),an adaptive tiling selector for holographic video communications,which can adaptively maximize perceived video quality un-der dynamic and limited computing and bandwidth resources.To be specific,we first conduct a preliminary study on the impacts of different tiling schemes and find that fine-grained tiles improve the rational utilization of dynamic network re-sources and coarse tiles ensure coding efficiency and robustness,which stimulates us to construct an adaptive tiling optimi-zation based on the predicted viewport,available computing resources,and network bandwidth;and then devise a fast algo-rithm to enable online tiling decisions.Rich experiments on the 8iVFB(8i Voxelized Full Bodies)datasets are conducted to compare VVSTiler with state-of-the-art tiling-based baselines.The results exhibit that VVSTiler can achieve up to 60.4％video quality improvements and save on average 27％bandwidth per frame against the closest competitor,in cases of terri-ble and accurate viewport predictions,respectively.关键词
全息视频通信/体积视频流/点云视频/自适应分块/视口预测/视频观感质量Key words
holographic video communications/volumetric video streaming/point cloud video/adaptive tiling/viewport prediction/perceived video quality分类
信息技术与安全科学引用本文复制引用
朱原玮,黄亚坤,乔秀全..面向全息视频通信的自适应分块传输方法[J].电子学报,2024,52(4):1144-1154,11.基金项目
国家重点研发计划(No.2022YFB2902900) （No.2022YFB2902900）
国家自然科学基金(No.62202065) National Key R&D Program of China(No.2022YFB2902900) （No.62202065）
National Natural Science Foun-dation of China(No.62202065) （No.62202065）
