View Full Document

ni_panoVideo_v10



View the full content.
View Full Document
View Full Document

18 views

Unformatted text preview:

On Demand Sharing of a High Resolution Panorama Video from Networked Robotic Cameras Ni Qin and Dezhen Song Video frames Image alignment Sphere wrapping 1 Client i Live video Live video 1 Decoding and composing panorama B BB I BB B User i N Rendering and display I B BBB BB I B BBB BB I BB BB BB im N i1 Requst i Request i area i time ts te I BBB BB B I B BB BBB I B BBB BB Abstract Due to their flexibility in coverage and resolution networked robotic cameras become more and more popular in applications such as natural observation security surveillance and distance learning Equipped with a high optical zoom lens a networked robotic camera can generate a giga pixellevel panorama to cover its viewable region As new live frames enter the system this panorama can be updated as a panorama video User requests are usually not limited to the current camera frame A user may request a specific region associated with a specific time window To satisfy different spatiotemporal requests for multiple concurrent users we present systems and algorithms to allow the on demand sharing of the high resolution panorama video The high resolution panorama video is encoded into a patch based representation to allow efficient storage and on demand content delivery We present system architecture user interface data representation and encoding decoding algorithms In the experiment we have implemented the system using the MPEG 2 codec Experimental results show that our system can not only satisfy different spatiotemporal queries but also significantly reduce computation time and communication bandwidth requirement I BB BB BB ts I B BBB BB te Time Fig 1 Evolving panorama video system diagram The left hand side illustrates the server side The right hand side is a user at the client side The grid at server represents a patch based high resolution panorama video system that allows multiple users to query different parts of the video concurrently I s and B s indicate the I frame and the B frame used in



Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view ni_panoVideo_v10 and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view ni_panoVideo_v10 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?