Video Retrieval based on spatial events
| Autor: | Wei-Hsun Huang, 黃煒勛 |
|---|---|
| Rok vydání: | 2012 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 100 A video is composed of a sequence of frames. A frame may contain multiple objects. In a single frame, it contains the spatial relations between objects in this frame. It does not have information about the change of the spatial relations between objects in the video. In this paper, we define the occurrence of change of the spatial relations between objects between two adjacent frames as the spatial event and propose the spatial event string to represent the spatial event. Hence, the change of the spatial relations between objects can be derived from this string and the video query based on spatial events can be processed efficiently. We would propose the algorithm for the generation of the spatial event string and the way to process the video query based on spatial events. Generally speaking, the number the objects involved in spatial events is relatively small. Since the spatial event string contains only the objects involved in spatial events. Compared with other strings, the length of the string can be reduced dramatically. Consequently, the requirement of the storage and the process time of the string can be reduced. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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