查詢結果分析
來源資料
頁籤選單縮合
題 名 | 在內涵式視訊擷取中有關運動軌跡的有效表達與雙階層比對方法=Efficient Representation and Two-Layer Matching of Motion Trajectory for Content-Based Video Retrieval |
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作 者 | 杜維昌; 梁維彬; | 書刊名 | 資訊管理展望 |
卷 期 | 7:1 2005.03[民94.03] |
頁 次 | 頁77-94 |
分類號 | 312.13 |
關鍵詞 | 多媒體資料庫; 數位視訊; 運動軌跡; Multimedia database; Digital video; Motion trajectory; |
語 文 | 中文(Chinese) |
中文摘要 | 隨著視訊媒體資料量的快速成長,繼文數型資料庫之後,開發一套有效率的工具來 管理些資料自然是目前重要的研究議題之一。視訊中重要內涵除了包括畫面中靜態影 像特徵之外,還包括視訊物作在時間軸上的變化。在本文中,我們以數位視訊資料為主 題,探討利用物件運動軌跡作為查詢條件的視訊擷取方法。相較於傳統作法,我們首先 尋求緊緻的運動軌跡表示方法。並以此為基礎,提出包括「運動地圖」與「方向性軌跡」 兩階層比對方法,以期在計算時間與擷取成效間取得較佳的平衡點。此外,我們亦提出 一整合性使用者介面,在單一內部表示法中,提供使用者更多樣的查詢方式。我們將實 際在電腦上製作,以驗證方法的可行性。 |
英文摘要 | With the fast growth of digital video, it is an important issue to develop an automatic and efficient video retrieval system for managing these data effectively. Contrary to spatial features in still images, video data also contain temporal features, such as visual motion trajectories of moving objects. In this paper, we focus ourselves on devemoping a motion-based video indexing and retrieval. Compared with traditional strategies, we firstly propose a compact representation of motion trajectory for a moving object. Based on this representation, a two-layer motion marching strategy, named motion-map matching and elastic matching, is adopted to achieve both efficient and reliable retrieval. Moreover, we alse discuss different query condition, which contain directed matching, partial matching and translation/scaling invariance, so as to provide a useful and diversified motion-based query.Finally, we describe a prototype of motion-based video retrieval. Experimental results are given to temonstrate the effects of proposed methods. |
本系統中英文摘要資訊取自各篇刊載內容。