Towards Holographic Video Communications: An Adaptive Tiling Solution

ZHU Yuan-wei; HUANG Ya-kun; QIAO Xiu-quan

doi:10.12263/DZXB.20230788

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Towards Holographic Video Communications: An Adaptive Tiling Solution

Special Issue: Recipients of CIE Science and Technology Awards | 更新时间：2025-12-08

- Towards Holographic Video Communications: An Adaptive Tiling Solution
- ACTA ELECTRONICA SINICA Vol. 52, Issue 4, Pages: 1144-1154(2024)
- 作者机构：
  
  北京邮电大学网络与交换技术全国重点实验室，北京 100876
- 作者简介：
- 基金信息：
  
  National Key R&D Program of China(2022YFB2902900);National Natural Science Foundation of China(62202065)
- DOI：10.12263/DZXB.20230788
  CLC： TP37;TP393.0
- Received：16 August 2023，
  
  Revised：2023-12-05，
  
  Published：25 April 2024
- 稿件说明：
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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(04):1144-1154.

ZHU Yuan-wei, HUANG Ya-kun, QIAO Xiu-quan.Towards Holographic Video Communications: An Adaptive Tiling Solution[J].Acta Electronica Sinica, 2024, 52(04): 1144-1154.
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(04):1144-1154. DOI：10.12263/DZXB.20230788

ZHU Yuan-wei, HUANG Ya-kun, QIAO Xiu-quan.Towards Holographic Video Communications: An Adaptive Tiling Solution[J].Acta Electronica Sinica, 2024, 52(04): 1144-1154. DOI：10.12263/DZXB.20230788

摘要

基于分治和按需传输思想的分块传输技术是解决三维全息视频流传输的有效手段.然而，现有的分块方案要么缺乏自适应机制，要么不适用于移动实时通信场景.为此，本文提出了VVSTiler（Volumetric Video Streaming Tiling selector），一种面向全息视频通信的自适应分块传输方法，能够在动态且有限的计算和带宽资源下最大化视频的观感质量.具体而言，本文对不同粒度的分块方案带来的影响进行了初步研究，发现细粒度的分块方案可提高动态网络资源的利用率，粗粒度的分块方案可保证视频编解码效率和鲁棒性.基于此，本文构建了考虑预测视口、可用计算资源以及网络带宽等上下文信息的视频观感质量优化问题，并设计了一个高效的求解方案以支持在线的分块粒度决策.本文在8iVFB（8i Voxelized Full Bodies）标准数据集上将VVSTiler与当前主流的分块传输方法进行了比较.实验结果表明，VVSTiler在有偏差的视口预测情况下实现了高达60.4%的视频观感质量提升，在较准确的视口预测情况下平均每帧视频节省了27%的带宽资源.

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 under 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 resources and coarse tiles ensure coding efficiency and robustness

which stimulates us to construct an adaptive tiling optimization based on the predicted viewport

available computing resources

and network bandwidth; and then devise a fast algorithm 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 terrible and accurate viewport predictions

respectively.

关键词

Keywords

references

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