結合時序多工與空間鄰近編碼的結構光三維 掃描系統

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姓名

王璽傑(Si Jie Wang) 查詢紙本館藏

畢業系所

資訊工程學系

論文名稱

結合時序多工與空間鄰近編碼的結構光三維掃描系統
(A Structured Light 3D Scanner with the Combining of Temporal Multiplexing and Spatial Neighborhood Coding)

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摘要(中)

針對同時具有銳利邊緣和平滑曲面的3D物體，傳統的結構光3D掃描的編碼方法通常不具有良好的適應性。本研究結合了空間鄰近與時序多工編碼，藉由時序相位與De Bruijn序列的整合，實現了一個高性能的3D掃描系統。此一系統具有較高的3D掃描精確度和執行效率。實驗結果顯示，對於複雜物體表面的3D掃描，我們的方法所得到的3D模型不僅輪廓精密度較高，而且當物體表面同時存在銳利與平滑曲面、陰影及反射所造成的表面雜訊，本系統均可順利重建三維輪廓，表現出良好的適應性。

摘要(英)

The coding method adopted in a conventional structured light 3D scanner generally exhibits unfavorable adaptability when processing 3D objects with sharp edges and smooth curved surfaces. In this study, a high-performance 3D scanner system was developed by combining temporal multiplexing and spatial neighborhood coding methods and integrating timing phase with De Bruijn sequences. The proposed system can accurately and efficiently execute 3D scanning. The experimental results revealed that when scanning the surface of a complex object, the proposed system produced a 3D model with highly precise profiles. When scanning the surface of objects that features sharp edges and smooth curved surfaces and noise signals caused by shadows and reflections, the system proposed in this study can effectively rebuild the 3D profile of the object and thus demonstrates excellent adaptability.

關鍵字(中)

★ 結構光系統
★ 三維掃描
★ 時序多工
★ 空間鄰近

關鍵字(英)

★ Structured Light system
★ 3D Scanner
★ Temporal Multiplexing
★ Spatial Neighborhood

論文目次

摘要 ii
ABSTRACT iii
目錄 iv
圖目錄 vii
表目錄 xiii
第一章、緒論 1
1.1 研究動機 1
1.2 研究目的 3
1.3 論文架構 3
第二章、三維掃描測量技術回顧 4
2.1 雙目立體視覺原理 4
2.1.1 影像前處理 4
2.1.2 立體匹配與視差 10
2.2 飛行時間原理 11
2.2.1 飛行時間型態 11
2.2.2 三角測量技術 12
2.2.3 光脈衝折返之深度距離 14
2.3 空間鄰近編碼之結構光 15
2.4 時序多工編碼之結構光 17
2.4.1 遞迴結構化圖案方法 17
第三章、結構光3D取像系統 20
3.1 結構光型態 20
3.2 結構光編解碼 21
3.2.1 相位編碼 21
3.2.2 相位解碼 22
3.2.3 相位間斷(phase discontinuous) 24
3.3 空間鄰近編碼結合 25
3.3.1 De Bruijn編解碼 25
3.3.2 邊緣序列 26
3.3.3 色彩識別(Color identification) 26
3.3.4 匹配(Matching) 27
3.4 系統流程 28
3.5 結構光3D取像系統設計 29
3.6 結構光3D取像系統離散事件建模 37
第四章、實驗 49
4.1 實驗環境 49
4.2 攝影機與投影機校正參數 51
4.3 探討三維掃描整合之結構光3D取像系統 53
4.3.1 傳統二進制格雷碼 53
4.3.2 空間鄰近編碼 58
4.3.3 結合結構光特點之整合 59
4.4 結構光3D取像系統驗證 60
4.4.1 相位編碼程序 61
4.4.2 相位解碼程序 64
4.4.3 相位間斷處理程序 65
4.4.4 相位疊合程序 70
4.4.5 相位解開程序 71
4.4.6 驗證結果 77
4.5 實驗與數據相較評估 80
第五章、結論 87
未來方向 88
參考文獻 89

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指導教授

陳慶瀚(Ching-han Chen)

審核日期

2015-12-15

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