Proceedings of the 23rd Packet Video Workshop最新文献_第2页

6K Effective Resolution with 4K HEVC Decoding Capability for OMAF-compliant 360° Video Streaming 6K有效分辨率与4K HEVC解码能力，适用于omaf兼容的360°视频流

Proceedings of the 23rd Packet Video Workshop Pub Date : 2018-06-12 DOI: 10.1145/3210424.3210425

Alireza Zare, A. Aminlou, M. Hannuksela

引用次数: 17

Optimized Viewport Dependent Streaming of Stereoscopic Omnidirectional Video 优化的视口依赖的立体全方位视频流

Proceedings of the 23rd Packet Video Workshop Pub Date : 2018-06-12 DOI: 10.1145/3210424.3210437

Deepa Naik, I. Curcio, H. Toukomaa

{"title":"Optimized Viewport Dependent Streaming of Stereoscopic Omnidirectional Video","authors":"Deepa Naik, I. Curcio, H. Toukomaa","doi":"10.1145/3210424.3210437","DOIUrl":"https://doi.org/10.1145/3210424.3210437","url":null,"abstract":"Streaming the whole omnidirectional video at high quality is less efficient in terms of bandwidth requirements and decoding complexity, since only a small part of the 360-degree horizontal field of view can be seen by a user at a given point in time. In Viewport Dependent Streaming (VDS) only the current user viewport is streamed at high quality, while the remaining parts are streamed at lower quality. This technology may save streaming bandwidth considerably, especially when it is associated to other techniques. Among the others, asymmetric stereoscopic video, has been studied in the past for traditional video and displays. We focused our research on the usage of asymmetric stereoscopic video for omnidirectional streams watched with a Head Mounted Display (HMD) in VDS. We conducted two subjective quality experiments with the main goal of reducing the streaming bandwidth, while keeping the subjective video quality at the highest level. We assessed asymmetric video applied separately to the foreground and background views of omnidirectional VDS sessions. We show that for VDS, applying asymmetric stereoscopic streaming delivery on the foreground view can save up to 41% bit rate, and using the same technique on the background view can save approximately up to 15% bit rate. Furthermore, eye dominance was seen not to be relevant in our experiments.","PeriodicalId":395862,"journal":{"name":"Proceedings of the 23rd Packet Video Workshop","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128542704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Dynamic Adaptive Point Cloud Streaming 动态自适应点云流

Proceedings of the 23rd Packet Video Workshop Pub Date : 2018-04-29 DOI: 10.1145/3210424.3210429

Mohammad Hosseini, C. Timmerer

{"title":"Dynamic Adaptive Point Cloud Streaming","authors":"Mohammad Hosseini, C. Timmerer","doi":"10.1145/3210424.3210429","DOIUrl":"https://doi.org/10.1145/3210424.3210429","url":null,"abstract":"High-quality point clouds have recently gained interest as an emerging form of representing immersive 3D graphics. Unfortunately, these 3D media are bulky and severely bandwidth intensive, which makes it difficult for streaming to resource-limited and mobile devices. This has called researchers to propose efficient and adaptive approaches for streaming of high-quality point clouds. In this paper, we run a pilot study towards dynamic adaptive point cloud streaming, and extend the concept of dynamic adaptive streaming over HTTP (DASH) towards DASH-PC, a dynamic adaptive bandwidth-efficient and view-aware point cloud streaming system. DASH-PC can tackle the huge bandwidth demands of dense point cloud streaming while at the same time can semantically link to human visual acuity to maintain high visual quality when needed. In order to describe the various quality representations, we propose multiple thinning approaches to spatially sub-sample point clouds in the 3D space, and design a DASH Media Presentation Description manifest speci.c for point cloud streaming. Our initial evaluations show that we can achieve signi.cant bandwidth and performance improvement on dense point cloud streaming with minor negative quality impacts compared to the baseline scenario when no adaptations is applied.","PeriodicalId":395862,"journal":{"name":"Proceedings of the 23rd Packet Video Workshop","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114232234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 78

IPTV Over ICN IPTV Over ICN

Proceedings of the 23rd Packet Video Workshop Pub Date : 2018-04-20 DOI: 10.1145/3210424.3210435

George Xylomenos, Alexander Phinikarides, Ioannis Doumanis, Xenofon Vasilakos, Yannis Thomas, Dirk Trossen, Michael Georgiades, Stuart Porter

引用次数: 4