Virtual Camera Controls and Sharing From Live Compressed Video (12147N)
IDA Technology Roadmap 2012
This technology falls in the following categories of Singapore's IDA Infocomm Technology Roadmap 2012:
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The system is capable of receiving compressed or uncompressed video feeds from multiple cameras providing a solution for virtualizing a camera in a live video scenario while scaling for multiple cameras and multiple users.
The system produces streaming of a specific region of an encoded video frame at a higher resolution when compared to other regions so as to save on bandwidth. The selected region is operator specific. Using one encoded stream, multiple operators can view different regions of the same frame at different zoom levels. Such a scheme is useful in surveillance applications where high- resolution streams cannot be streamed by default (due to the transmission medium’s limited bandwidth).
Additionally, applications for in-stadium deployments for sporting and cultural events can be deployed giving the audience access to different camera views at low resolution on small screen devices (personal PDAs, Tablets, Phones) connected via a stadium-WiFi network. When a region of interest has been found, users can virtually zoom and view that region alone at higher resolution. When a zoom in is performed, the bandwidth of the video remains as small as the default low-resolution case. As a result many more users can be supported. Furthermore, the process does not negatively impact battery life.
Technology Readiness Level 4 on the scale by the Ministry of Defence Singapore.
More details on this technology here.
About the Research Group
Dr. Wei Tsang Ooi is an Associate Professor at the NUS School of Computing. His research focuses on interactive multimedia systems (3D streaming, interactive video streaming, and networked virtual environments. Dr. Ooi is part of the NExT Search Center.