Name
Title | ||
|---|---|---|
Shared Coded Picture Technique for Tile-based Viewport-adaptive Streaming of Omnidirectional Video |
Abstract | ||
|---|---|---|
Tile-based viewport-adaptive streaming methods have been used in delivering omnidirectional video for virtual reality applications. In these methods, the 360° video is encoded in multiple quality versions by using the motion constrained tile set (MCTS) technique. A set of high-quality and low-quality tiles, corresponding to viewport and non-viewport areas, respectively, are selected and transmitted to the user. However, these methods require frequent intra random access points to ensure seamless viewport switching capability, very high decoding complexity, or a multi-layer coding scheme. The frequent intra random access points include very high bitrate in viewport switching points. The high decoding complexity and multi-layer decoder requirements are not aligned with the omnidirectional media format (OMAF) standard. Such requirements make these methods sub-optimal or impractical for streaming the omnidirectional video. This paper studies the current tile-based solutions for delivering the omnidirectional content. Moreover, the OMAF-compliant shared coded picture (SCP)-based scheme is proposed in this paper for streaming the omnidirectional video. The core concept of the SCP-based method is to manipulate the switching point pictures in a way that the frequent intra-coded pictures are no longer required for the viewport switching operations between different quality versions of the content. The experiments illustrated that the SCP-based method outperforms the MCTS-based method on average by 11% to 14% in terms of streaming bitrate reduction with only 4% extra decoding complexity. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1109/tcsvt.2018.2874179 | IEEE Transactions on Circuits and Systems for Video Technology |
Keywords | Field | DocType |
Streaming media,Switches,Decoding,Encoding,Bit rate,Standards,Media | Computer vision,Omnidirectional antenna,Virtual reality,Viewport,Computer science,Coding (social sciences),Artificial intelligence,Decoding methods,Tile,Encoding (memory),Random access | Journal |
Volume | Issue | ISSN |
29 | 10 | 1051-8215 |
Citations | PageRank | References |
3 | 0.42 | 0 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Ramin Ghaznavi Youvalari | 1 | 8 | 3.66 |
| Alireza Zare | 2 | 62 | 7.23 |
| Alireza Aminlou | 3 | 85 | 14.99 |
| Miska M. Hannuksela | 4 | 993 | 102.86 |
| Moncef Gabbouj | 5 | 3282 | 386.30 |