篇名 | 滿足 GC2連續性之四曲面縫合技術研究 |
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卷期 | 5:1 |
並列篇名 | A Stitching Technique Satisfying GC2 Continuity for 4 Surface Patches |
作者 | 楊大中 、 汪建中 |
頁次 | 001-008 |
關鍵字 | 曲面縫合 、 Bezier曲面 、 逆向工程 、 RBS曲面 、 stitching 、 Bezier surface 、 reverse engineering 、 rational B-spline surface |
出刊日期 | 201001 |
在逆向工程中曲面重建是重要的一環,為了因應三次元量測產生大量資料點而不易處理,所以發展曲面區塊接合技術是必然的趨勢,而舊有的曲面接合技術有著計算複雜及計算量大,或者無法提供良好幾何連續性的說明等的缺點。本文提出一個以利用Bezier 曲面縫合法來處理4 rational B-spline曲面區塊間之接合問題。以此種接合法之接縫處,可以滿足至少 2
GC次的連續性。而且本方法只須更改少量曲面區塊邊界區域的控制點資料,所以有計算簡單且計算量少之優點。
Reconstruction of surface models is a vital part in reverse engineering.
Because of the huge amount of data from Coordinate Measuring Machine,
existing techniques of surface patch joining have the disadvantages, such as computational complication or lack of desired geometric continuity. A
2GC joining technique for 4 rational B-spline surface patches by utilizing Bezier functions at the patch boundaries is proposed. This method possesses the merits in which only the control vertices near the joining boundaries of patches are modified and no additional blending surfaces at the boundaries of patches are created.