• 作者： 賈叢林; 陳稔
• 作者服務機構： 交通大學資訊工程研究所
• 中文摘要： 本文提出一利用結構光源解決部份可見物體測量問題的新方法。利用主動式結構光源的格子編碼技術，我們可計算出三維條紋上交點的三維位置·並且可以由此推導出各光平面的平面方程式。對於圓柱體而言，這些交點皆會在光平面上，且是橢圓曲線的一部份，利用最小平方法及幾何轉換技巧，我們可以得到橢圓的係數，並推算其中心點，進而利用這些橢圓中心點必在圓柱體中心軸的特徵，我們便能求得圓柱體的位置及半徑。經由實驗結果顯示，驗證我們的方法是十分有效及準確的。
• 英文摘要： In this paper, we shall present a novel method for approaching a partial view problem using astructured light image. We shall use a grid coding technique to compute the 3-D stripe junctions. Basedon the calculated 3-D stripe junctions (i.e., grid junctions), we can infer the position for the structured lightplanes in 3-D space. Once the structured light planes are found, we can find the 3-D position for all pointson the curved stripes. These points represent a partial elliptical curve on the cylindrical surface markedby a light plane. A least-squares estimation of the coefficients of the ellipse equation is provided. Finally,the cylinder axis and its radius are found from the derived elliptical curves on the cylindrical surface.Computer simulations using real data were conducted to illustrate the method; the estimation results indi-cate that the method works successfully.
• 中文關鍵字： structured light; cylinder axis; curved stripe pattern; shape parameters; perspective projection; partial cylindrical surface
• 英文關鍵字： --