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2002

3D C-string: a new spatio-temporal knowledge representation for video database systems

12 years 1 months ago
3D C-string: a new spatio-temporal knowledge representation for video database systems
In video database systems, one of the most important methods for discriminating the videos is by using the objects and the perception of spatial and temporal relations that exist between objects in the desired videos. In this paper, we propose a new spatio-temporal knowledge representation called 3D C-string. The knowledge structure of 3D C-string, extended from the 2D C+ -string, uses the projections of objects to represent spatial and temporal relations between the objects in a video. Moreover, it can keep track of the motions and size changes of the objects in a video. The string generation and video reconstruction algorithms for the 3D C-string representation of video objects are also developed. By introducing the concept of the template objects and nearest former objects, the string generated by the string generation algorithm is unique for a given video and the video reconstructed from a given 3D C-string is unique too. This approach can provide us an easy and e cient way to ret...
Anthony J. T. Lee, Han-Pang Chiu, Ping Yu
Added 23 Dec 2010
Updated 23 Dec 2010
Type Journal
Year 2002
Where PR
Authors Anthony J. T. Lee, Han-Pang Chiu, Ping Yu
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