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研究生:鄭仲強
研究生(外文):Cheng,Chung-Chiang
論文名稱:在虛擬環境中以攝影學法則開發智慧型攝影機模組
論文名稱(外文):Designing an Intelligent Camera Module with Cinematography in Virtual Environment
指導教授:李蔡彥李蔡彥引用關係
指導教授(外文):Li, Tsai-Yen
學位類別:碩士
校院名稱:國立政治大學
系所名稱:資訊科學學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2007
畢業學年度:95
語文別:中文
論文頁數:57
中文關鍵詞:動態規劃虛擬攝影機
外文關鍵詞:Motion PlanningVirtual Camera
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本研究在虛擬環境中發展出一套符合攝影學法則的即時智慧型攝影機模組,當使用者操縱化身時能夠給予攝影機自動規劃之能力,不需要花費額外的心力控制攝影機。智慧型攝影機的能力包含了規劃不被障礙物遮蔽的跟蹤拍攝,以及當攝影機進入險惡的環境時,自動在兩台攝影機之間進行符合攝影學法則的轉切。此外,此智慧型攝影機模組能夠依照不同使用者的偏好,產生不同結果的攝影機規劃。我們實作了此一智慧型攝影機的系統,並以實例說明此系統的有效性。
We have developed a real-time intelligent camera module with a set of cinematography in a virtual environment. Its automatic camera planning capacity allows that the users to spend less effort in controlling the camera when manipulating an avatar. An intelligent camera should be able to plan unobstractive tracking motion and necessary cuts automatically between two cameras with the rule of cinematography. In addition, the results of the camera planning can be customized by setting appropriate parameters in accordance with the user’s preferences. We have implemented this intelligent camera system, and demonstrated the effectiveness of this system through several examples
第 1 章 導論 1
1.1 簡介與研究背景 1
1.2 研究動機與目的 3
1.3 論文貢獻 4
1.4 本論文之章節架構 5
第 2 章 背景知識與相關研究 6
2.1 基礎攝影學 6
2.1.1 攝影機運作的種類 7
2.1.2 攝影機拍攝距離的種類 9
2.1.3 攝影機拍攝角度的種類 11
2.1.4 攝影機架設的方位 12
2.1.5 攝影機的轉切 13
2.2 虛擬攝影機的相關研究 15
2.1.1 代數式系統 (Algebraic System) 15
2.2.2 條件限制式系統 (Constraint-based System) 16
2.2.3 運動計畫式系統 (Motion Planning System) 17
2.3 運動計畫的相關研究 17
2.3.1 區域分割法 18
2.3.2 位能場法 19
2.3.3 街圖法 20
第 3 章 規劃即時攝影機路徑 21
3.1 問題描述 21
3.2 系統架構 23
3.3 攝影機組態空間的定義 25
3.4 惰性機率街圖 (Lazy Probability Roadmap Method) 26
3.5 攝影機路徑規劃 30
3.5.1 目標函式 30
3.5.2 時間預算 (Time-Budget) 32
3.5.3 拍攝目標未來位置的預測 32
3.5.4 攝影機路徑規劃演算法 34
第 4 章 虛擬攝影機的轉切 36
4.1 問題描述 36
4.2 街圖上的虛擬連結 37
4.2.1 分析街圖上節點的攝影機方位 37
4.2.2 虛擬連結的建立 38
4.3 其他實作細節 40
第 5 章 實驗結果與討論 41
5.1 系統實作 41
5.1.1 碰撞偵測 42
5.2 實驗一:基本場景測試 44
5.2.1 實驗設計 44
5.2.2 實驗結果 44
5.3 實驗二:攝影機轉切之實驗 48
5.3.1 實驗設計 48
5.3.2 實驗結果與討論 48
5.4實驗三:拍攝目標物未來位置預測深度之比較 49
5.4.1 實驗設計 49
5.4.2 實驗結果與討論 50
第 6 章 結論與未來展望 53
6.1 結論 53
6.2 未來展望 53
參考文獻 54
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