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HEVC-compliant Tile-based Streaming of Panoramic Video for Virtual Reality Applications

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Details

Original languageEnglish
Title of host publicationProceedings of the 2016 ACM on Multimedia Conference
Place of PublicationNew York, NY, USA
PublisherACM
Pages601-605
Number of pages5
ISBN (Print)978-1-4503-3603-1
DOIs
Publication statusPublished - 2016
Publication typeA4 Article in a conference publication
EventACM MULTIMEDIA -
Duration: 1 Jan 1900 → …

Conference

ConferenceACM MULTIMEDIA
Period1/01/00 → …

Abstract

Delivering wide-angle and high-resolution spherical panoramic video content entails a high streaming bitrate. This imposes challenges when panorama clips are consumed in virtual reality (VR) head-mounted displays (HMD). The reason is that the HMDs typically require high spatial and temporal fidelity contents and strict low-latency in order to guarantee the user's sense of presence while using them. In order to alleviate the problem, we propose to store two versions of the same video content at different resolutions, each divided into multiple tiles using the High Efficiency Video Coding (HEVC) standard. According to the user's present viewport, a set of tiles is transmitted in the highest captured resolution, while the remaining parts are transmitted from the low-resolution version of the same content. In order to enable randomly choosing different combinations, the tile sets are encoded to be independently decodable. We further study the trade-off in the choice of tiling scheme and its impact on compression and streaming bitrate performances. The results indicate streaming bitrate saving from 30% to 40%, depending on the selected tiling scheme, when compared to streaming the entire video content.

Keywords

  • head-mounted display (hmd), hevc, panoramic video streaming, tiles, video coding, virtual reality

Publication forum classification

Field of science, Statistics Finland