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Thursday, July 05, 2018
Japanese DOCOMO Develops 360-degree 8K VR Live Video Streaming and Viewing System


Japanese mobile service provider NTT DOCOMO, INC has developed what is believed to be the world's first 8K virtual reality (VR) live video streaming and viewing system for showing live events in 360 degrees 8K VR video.

The head-mounted viewing system promises to create "highly realistic VR experiences" for enjoying music and sporting events that "allow viewers to feel as if they are actually at the venue," according to the company.

The system uses a field programmable gate array (FPGA) in order to be peorful enough for 4x 4K video processing for real-time stitching and compression into 360 degrees 8K video. The company also developed an algorithm for high-density mounting (maximizes FPGA processing) at 30 frames per second (fps).

To view video in the head-mounted display, the 360 degrees 8K video is divided into multiple clipped videos (tiles) so that only the video corresponding to the user's viewing direction needs to be displayed. In addition, a Panorama Cho Engine encoder is used for devising algorithms that enable real-time operation, thereby reducing the processing demands for live transmission.

The system comprises equipment that stitches together five 4K fisheye videos from five outward-facing cameras in real time at 30fps, an 8K H.264 encoder for real-time compression, the real-time Panorama Cho Engine encoder to divide the 360 degrees 8K video into multi-direction tiles, and a server to transmit tiles according to the user's viewing direction.

This system will be exhibited at DOCOMO 5G Open Lab Yotsuya, which offers 5G technologies for testing in collaboration with companies participating in the DOCOMO 5G Open Partner Program.



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