基於旋轉台的三維物件重建物像配置優化作業

Optimization of Image Acquisition for Turntable-based Photogrammetric 3D Object Reconstruction

藍雍堯(Yong-Yao Lan)

指導教授 ： 趙鍵哲

國立臺灣大學/工學院/土木工程學研究所/碩士(2021年)

https://doi.org/10.6342/NTU202100404

摘要

測量是一門幾何描繪及分析應用的學科，為能描繪世界樣貌、記錄事物，重建立體世界的方法有手繪、影像、二維圖形以及三維點雲等，與時俱進的測量技術提升測量的工具、成果與精度。
幾何重建為測量常態性任務，常見的三維建模方式，如接觸式掃描儀、雷射掃描儀、結構光以及攝影測量，各有其作業方便性及限制性。其中針對小型可移動式物件，利用旋轉台提供穩定的旋轉系統，利用旋轉改變測量儀器與目標物之間的相對位置，加上自動化擷取、靈活配置以及低成本的作業方法，經常搭配攝影測量進行三維物件重建，惟攸關重建品質的取像作業參數尚未有一套優化程序可供參照。
本研究透過推導地面取樣距離、景深與透鏡成像公式之參數關係，以及模擬旋轉台拍攝之實驗，建構一套以攝影測量搭配旋轉台的三維物件重建取像優化程序，協助使用者作業前便能依據處理類型並使用相應公式建構查照表格，從中決定取像前所需配置之攝影參數，依循清晰流程與簡要設定，獲取清晰影像，完成三維物件重建取像作業，進而獲得完整且忠實呈現物體幾何的重建結果。

關鍵字

攝影測量 ； 三維建模 ； 物件重建 ； 旋轉台 ； 優化程序

並列摘要

Survey is the discipline of geometric description and analysis application. The methods to describe the world, record the things, and reconstruct the world include hand-painted, images, 2D graphics, to 3D point clouds. The measurement technique improves the tools, results and precision with the times.
Geometric reconstruction is a normal task of measurement. Common 3D modeling instruments, such as coordinate measuring machine, laser scanner, structured light system and photogrammetry, each have their own convenience and limitations. Among them, for small movable objects, the turntable provides a stable rotation system, which uses rotation to change the relative position between the measuring instrument and the target. It is an automatic acquisition, flexible configuration, and low-cost operation method and often used with photogrammetry for 3D object reconstruction. There is not yet a set of optimization procedures for reference of operating parameters related to reconstruction quality.
In this study, by deriving the parameter relationship between depth of field (DOF), Ground sample distance (GSD) and lens imaging formula, as well as simulating the experiment of turntable, we want to construct a set of 3D object reconstruction and imaging optimization program with photogrammetry and turntable. Before assisting users to work, they can construct a photo search form according to the processing type and use the corresponding formula. From this, determine the photography parameters that need to be configured before taking the image, follow clear procedures and brief settings, get clear images, and complete the 3D object reconstruction and acquisition operation, then obtain a complete and faithful reconstruction result of the object geometry.

並列關鍵字

Photogrammetry ； 3D Modeling ； Reconstruction ； Turntable ； Optimization

參考文獻

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