|
姓名 |
陳威宇(Wei-yu Chen) |
電子郵件信箱 |
E-mail 資料不公開 |
|
畢業系所 |
營建工程系碩士班(Department and Graduate Institute of Constrction
Engineering) |
|
畢業學位 |
碩士(Master) |
畢業時期 |
95學年第2學期 |
|
論文名稱(中) |
應用單張影像及3D網格板還原成像時三維空間資訊之可行性評估 |
|
論文名稱(英) |
Evaluating the Feasibility for Restoring the 3D Scene when A
Photo was taken with Employing Single Image and 3D Perspective
Grid Plate |
|
檔案 |
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|
論文使用權限 |
校內外都二年後公開 |
|
論文語文/頁數 |
中文/101 |
|
摘要(中) |
一般還原空間資訊大多使用兩張或兩張以上之影像，但拍攝過程需要有拍攝影像彼此間共同重疊資訊，若忽略影像所拍攝的重疊範圍，從影像中擷取空間資訊將產生困難。此外攝影測量所採用之量測性相機或常用之測量儀器，其測量結果雖較精準，但成本昂貴、使用程序複雜。本研究使用單張影像及3D網格板，搭配相關投影幾何觀念建構影像與實際空間之幾何關係，計算上並應用幾何代數定義影像中幾何物件彼此間關係，進而從單張影像推算影像中物件之三維資訊。研究中並透過實驗案例之現場拍攝，使用單張影像還原實驗場景中各物件量測點在相對距離高度、X軸方向實際相對距離及Y軸方向實際相對距離之三維資訊，最後並與實際之量測值比較，以分析驗證本研究方法之可行性。 |
|
摘要(英) |
Exploring the spatial information contained in a single photo is
an important research topic in computer vision and
photogrammetry. Theoretically, more than two photos covering the
same area are needed to restore the 3D scene of the areas, while
those photos were taken. This research focuses on collecting the
3D spatial information from a single photo with proposed
approach and the developed 3D perspective grid plate. In the
proposed approach, Grassmann-Cayley geometric algebra is
employed to establish the geometric relationship between the
real world and the single photo such that 3D spatial information
can be precisely collected. In general, extracting the 3D
spatial information from a single photo is difficult, unless
additionally geometric conditions are provided. A new
perspective grid plate is developed to provide extra geometric
conditions during collecting spatial information. From the
experiments illustrated in this paper, the accuracy in center
meter level can be reached with employing the proposed
algorithms and developed 3D perspective grid plate in this
paper. |
|
關鍵字(中) |
3D網格板
3D資訊重建
交叉比例
|
關鍵字(英) |
Cross Ratio
3D Perspective Grid
Reconstruction of 3D Information
|
|
口試委員 |
巫哲緯 - 召集委員
鄭道明 - 委員
黃怡碩 - 指導教授
|
|
口試日期 |
2007-07-06 |
繳交日期 |
2007-08-20 |