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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/27867
Title: | 在一般光線下利用照相機投影機系統建構三維模型 3D Modeling Using Camera-Projector Systems Under Ambient Lighting Condition |
Authors: | Pi-Han Lee 李沛翰 |
Advisor: | 王傑智(Chieh-Chih Wang) |
Keyword: | 照相機投影機系統,三圍模型, camera-projector system,3d model, |
Publication Year : | 2007 |
Degree: | 碩士 |
Abstract: | 在日常生活環境中,投影機必須將畫面投影至完全平坦的牆面上,使用者才能清楚看見不變形的影像。如果我們希望一般的投影機能夠適應環境,不論是彎曲的牆面或是牆角都能投影出不變形的畫面,則可以使投影機設備更方便的被使用且應用更為廣泛,例如智慧型空間的隨處投影(display anywhere)。
若要能使投影機隨著環境的變化投影出不變形的畫面,我們必須要知道環境的三維模型,而我們利用照相機投影機系統,藉由投影機投出結構圖樣(structured light pattern),在相機影像中的觀察結構圖樣(structured light pattern)因環境所產生的變化,進而計算出環境的三維模型。 在一般光線下,要清楚偵測出結構圖樣(structured light pattern)在相機影像中的位置,比在完全黑暗的密室中更為困難,投影的表面材質與顏色也會影響結構圖樣(structured light pattern)的偵測。我們探討三種不同的技術所建構出的三維模型,其中提出一個在一般光線下偵測結構圖樣(structured light pattern)的演算法。 In many situations, an ideal display surface for a projector is not available. We may want to project images on curved and non-planar surfaces. The environment-adaptive display can be accomplished given that the geometry information of the scene is available. The camera-projector system is a low-cost 3-dimensional range sensor. Our system uses a digital camera with 640x480 resolution and DLP(Digital Light Processing) projector. Based on the three different techniques, multiple-shot scanning, one-shot scanning, and active stereo, the depth could be obtained via triangulation. In this thesis, we use the camera-projector systems to reconstruct the 3-dimensional model of the target object in the the ambient lighting environment. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/27867 |
Fulltext Rights: | 有償授權 |
Appears in Collections: | 資訊工程學系 |
Files in This Item:
File | Size | Format | |
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ntu-96-1.pdf Restricted Access | 3.38 MB | Adobe PDF |
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