完整後設資料紀錄
DC 欄位語言
dc.contributor.author李威德en_US
dc.contributor.authorWei-Te Leeen_US
dc.contributor.author莊仁輝en_US
dc.contributor.authorJen-Hui Chuangen_US
dc.date.accessioned2014-12-12T02:30:29Z-
dc.date.available2014-12-12T02:30:29Z-
dc.date.issued2002en_US
dc.identifier.urihttp://140.113.39.130/cdrfb3/record/nctu/#NT910394092en_US
dc.identifier.urihttp://hdl.handle.net/11536/70260-
dc.description.abstract鏡頭變換的偵測是進行視訊分析及檢索的一個重要步驟,其目的是將影片切割成有意義的片段,以利於後續的處理。影片中的鏡頭變換通常可分為瞬間式轉變和漸進式轉變兩種。本篇論文提出一個演算法來偵測影片中的鏡頭變換。針對瞬間式轉變,首先我們利用MPEG資料中Macroblock的資訊做初步的偵測,找出可能發生瞬間式鏡頭變換的候選畫面,同時記錄可能為漸進式轉變的候選畫面群,然後再比對DC值影像的差異來找出真正的換鏡畫面。至於漸進式轉變的部分,我們利用先前偵測瞬間式轉變時所記錄的候選畫面群,來分析DC值變異數的一次微分序列,以提高偵測的效率。zh_TW
dc.description.abstractVideo shot change detection is fundamental to video analysis and indexing. It is to partition a video into groups of meaningful segments or shots, which are basic units for video processing. There are two basic types of shot transitions: abrupt transition and gradual transition. In this thesis, we develop two-phase algorithm to detect shot transition in MPEG compressed video. For abrupt transition, we use macroblock information extracted from MPEG video bitstream to perform the initial analysis, including the identification of image frames of possible gradual transition. The DC value is then used to find the correct shots. As for gradual transition, we analyze the first derivative of the variance of DC image sequence. Image frames of possible gradual transition obtained in the initial analysis can be used to guide the analysis of the DC image sequence to improve the efficiency.en_US
dc.language.isozh_TWen_US
dc.subject鏡頭偵測zh_TW
dc.subject瞬間式變化zh_TW
dc.subject漸進式變化zh_TW
dc.subject視訊分析zh_TW
dc.subjectShot Change Detectionen_US
dc.subjectAbrupt Transitionen_US
dc.subjectGradual Transitionen_US
dc.subjectVideo Analysisen_US
dc.titleMPEG視訊分析 - 鏡頭變換的偵測與分類zh_TW
dc.titleMPEG Video Analysis - Shot Change Detection and Classificationen_US
dc.typeThesisen_US
dc.contributor.department資訊科學與工程研究所zh_TW
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