|Title:||3D Z-string: A new knowledge structure to represent spatio-temporal relations between objects in a video||Authors:||Lee A.J.T.
|Keywords:||2D Z-string;3D C-string;3D Z-string;Iconic indexing;Video databases||Issue Date:||2005||Source:||Pattern Recognition Letters||Journal Volume:||26||Journal Issue:||16||Start page/Pages:||2500-2508||Abstract:||
In this paper, we propose a new knowledge structure called 3D Z-string, extended from the 2D Z-string, to represent the spatial and temporal relations between objects in a video and to keep track of the motions and size changes of the objects. Since there are no cuttings between objects in the 3D Z-string, the integrity of objects is preserved. The string generation and video reconstruction algorithms for the 3D Z-string representation of video objects are also developed. The string generated by the string generation algorithm is unique for a given video and the video reconstructed from a given 3D Z-string is unique too. The experimental results show that the 3D Z-string is more compact and efficient than the 3D C-string in terms of storage space and execution time. ? 2005 Elsevier B.V. All rights reserved.
|Appears in Collections:||資訊管理學系|
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