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    Title: 利用2D M-字串之影片查詢
    Other Titles: Video retrieval using 2D M-string
    Authors: 游重陽;Yu, Chung-yang
    Contributors: 淡江大學資訊管理學系碩士班
    梁恩輝;Liang, En-hui
    Keywords: 空間關係;位移區段;2D B-字串;2D M-字串;spatial relationship;Displacement;2D B-string;2D M-string
    Date: 2010
    Issue Date: 2010-09-23 16:57:35 (UTC+8)
    Abstract: 在影像資料庫中基於內容的影像尋取是一個查詢影像的重要方法。利用字串表示影像中物件之間的空間關係,以及利用空間關係進行空間推論及相似尋取之方法已被廣泛的討論。
    本論文利用2D B-string的概念表示影片中一段時間內物件間移動的空間關係。假設物件在空間上是以MBR之中心點表示,需標記每個物件於此段影片的「啟始位置」和「結束位置」,並由啟始位置到結束位置之間定義成一個區段,稱之為此段影片中該物件的「位移區段」。將根據物件的位移區段,利用2D B-string的概念來建立一個新的字串稱為「2D M-string」,此時的字串就能表達出在該段影片中,物件彼此之間移動的空間關係。以本論文提出之2D M-String來空間推論和利用索引結構進行搜尋時,能大量過濾較不相似之影片片段,減少字串比對的次數,增加尋取的效能,藉此將可達到有效率地影片查詢之目的。
    In image database systems, Content-Based Image Retrieval (CBIR) is an important approach to image retrieval. How to use strings to express the spatial relationship between objects and how to perform the inference and similarity retrieval have been widely discussed.
    The concept of 2D B-string notation is used to indicate the moving spatial relationship between objects in a video. Each object is represented as a focal point, and the point is marked in the "initiation position" and "end position" of each object of the video. A section from the point in the "initiation position" to the point in the "end position" is defined as the “displacement” of the object in the video. The 2D M-string is created based on the displacement of the objects in the video. The 2D M-String to spatial reasoning and search using the index structure can be a lot less similar to the filter clips to reduce the number of string matching and the efficient retrieval of similar video can be achieved.
    Appears in Collections:[資訊管理學系暨研究所] 學位論文

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