https://scholars.lib.ntu.edu.tw/handle/123456789/415133
標題: | 3D Z-string: A new knowledge structure to represent spatio-temporal relations between objects in a video | 作者: | Lee A.J.T. Yu P. Chiu H.-P. Hong R.-W. |
關鍵字: | 2D Z-string;3D C-string;3D Z-string;Iconic indexing;Video databases | 公開日期: | 2005 | 卷: | 26 | 期: | 16 | 起(迄)頁: | 2500-2508 | 來源出版物: | Pattern Recognition Letters | 摘要: | 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. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/415133 | ISSN: | 01678655 | DOI: | 10.1016/j.patrec.2005.04.018 |
顯示於: | 資訊管理學系 |
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