Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Virtual Reality: Tile Based HEVC Video – Enabler for high quality VR streaming from Fraunhofer HHI

07.09.2016

High-resolution content is required to foster a sense of immersion in VR video applications, but the large amount of data poses a challenge to established transport means and the limits of video decoders. Lightweight merging of HEVC Tiles allows to easily adapt the 360 degree video data stream to the current VR user viewport without transcoding to significantly reduce the required data rates. At this year’s trade fair IBC in Amsterdam the Fraunhofer HHI will show this technology (Hall 8, Booth B80).

High-resolution in user Field of View (FoV) is required to foster a sense of immersion in VR video applications such as multiple times UHD resolution to cover full 360 degree surroundings. This large amount of data poses a major challenge to the whole chain of current state video streaming.


Tile Based HEVC Video for VR

© Fraunhofer HHI

The bandwidth required for streaming of such content over the public Internet cannot be provided for most of users. Likewise, video decoders are typically not capable of decoding such high-resolution video, especially with constrained resources such as those of a mobile device.

A new approach for bitrate adaptively in Virtual Reality video applications is required. An inferior approach is to provide a stream per user or FoV orientation, which does not scale well and requires many separate encodings. A superior solution is facilitation of HEVC Tiles.

After encoding, this approach allows emphasis of the current user FoV within the 360 degree video through better quality or higher resolution on-the-fly. This is done in a lightweight fashion without transcoding by Fraunhofer HHI’s technique for aggregation of tiles of different quality or resolution into a single common bitstream.

Fraunhofer HHI’s underlying technique for Compressed Domain Tile Aggregation allows aggregating separate HEVC encoded videos into a single common HEVC bitstream through lightweight rewriting of header information. Using this technique, a suitable bitstream for each user can be easily generated on the fly without heavy processing on the server or client side.

This allows a more efficient bandwidth usage as video content outside the users current FoV can be transmitted with low quality or small resolution. Therefore, this technique enables a better decoder utilization such as 16K VR video quality using a 4K decoder.

Given Fraunhofer HHI’s lightweight technique for Compressed Domain Tile Aggregation, usage of a single video decoder on the end device is enabled.

Furthermore, complete and market ready streaming solutions can be implemented based on the well-established MPEG standards family such as MPEG File Format and MPEG DASH which are fully compatible to the Compressed Domain Tile Aggregation technique.

Anne Rommel | Fraunhofer-Institut für Nachrichtentechnik Heinrich-Hertz-Institut
Further information:
http://www.hhi.fraunhofer.de

More articles from Information Technology:

nachricht Powerful IT security for the car of the future – research alliance develops new approaches
25.05.2018 | Universität Ulm

nachricht Supercomputing the emergence of material behavior
18.05.2018 | University of Texas at Austin, Texas Advanced Computing Center

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Powerful IT security for the car of the future – research alliance develops new approaches

The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.

Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...

Im Focus: Molecular switch will facilitate the development of pioneering electro-optical devices

A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.

The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...

Im Focus: LZH showcases laser material processing of tomorrow at the LASYS 2018

At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.

At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...

Im Focus: Self-illuminating pixels for a new display generation

There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?

At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...

Im Focus: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

In focus: Climate adapted plants

25.05.2018 | Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

 
Latest News

In focus: Climate adapted plants

25.05.2018 | Event News

Flow probes from the 3D printer

25.05.2018 | Machine Engineering

Less is more? Gene switch for healthy aging found

25.05.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>