使用手繪單視角視圖建立三維物體介面之研究

Constructing 3D Objects using a Single-View Sketch Interface

陳重淵(Jung-Yuan Chen)

指導教授 ： 陳俊銘

大同大學/電機資訊學院/資訊工程學系所/碩士(2008年)

摘要

利用紙筆繪圖是最有力與直覺的工具之一，非常適合用於概念初期設計之階段，幫助抽象觀念的傳遞。若能於電腦系統上以紙筆經驗來繪製三維模型，將使三維模型的製作顯得直覺與容易，且可利用電腦輔助設計，增添紙筆繪圖之外更多的功能：如模型的平移、旋轉等。但實際要由二維投影圖將原三維物件還原，數學上則是一無窮解問題。本文利用座標軸系統建立線段深度的方式，由三維物體的單視角視圖，以其線段角度的分佈與線段連接關係，獲得仿符真實的各線段深度值。此方式適合處理富有正交(Orthographic)資訊的模型。

關鍵字

單視角視圖 ； 手繪圖 ； 三維建模 ； 設計工具

並列摘要

This paper presents an interface for using two-dimensional freehand sketch to reconstruct a three-dimensional object. The algorithm finds orthogonal three-dimensional system according to the angular distribution of the strokes. And exploit axis system to calculate a plausible depth for each vertex, then construct a three-dimensional object with some gestures. This interface is effective for constructing objects which are mostly comprised of orthogonal features, and also demonstrate in interactive time when user draws two-dimensional sketches to construct a three-dimensional object.

並列關鍵字

Sketching ； 3D Model Construction ； Design Tools ； Single-View

參考文獻

[2]Shesh, A., and Chen, B.: “SMARTPAPER: An Interactive and User Friendly Sketching System,” Computer Graphics Forum, vol. 23, no. 3, 2004, pp. 301-310.

[3]Igarashi, T., Matsuoka, S., Tanaka, H.: “Teddy: Sketching Interface for 3D Freeform Design.” In Proceedings of SIGGRAPH (August 1999), pp. 409-416.

[4]Zeleznik, R.C., Herndon, K.P., and Hughes, J.F.: “SKETCH: An Interface for Sketching 3D Scenes.” SIGGRAPH ’96 Conference Proceedings, pp. 163-170, 1996.

[5]Lipson, H., and Shpitalni, M.: “Optimization-Based Reconstruction of a 3D Object from a Single Freehand Line Drawing.” Computer Aided Design, 1996, Vol.28 No. 8, pp. 651-663.

[6]Igarashi, T., John, F. Hughes: “A Suggestive Interface for 3D Drawing”, UIST 2001: 173-181