传统方法与快速曲面方法进行复杂曲面重建的比较

背景：逆向工程技术在外科手术中的应用越来越广泛,如何快速、高效地制作出满足快速原型加工所需的模型越来越受到医务人员的关注. 目的：在对常用曲面重构方法建模技术进行总结的基础上,针对传统方法和快速曲面方法对面部复杂曲面进行了重建比较分析. 方法：采用日本Konica公司生产的VIVID9i非接触式三维数字化仪对30名在校大学生面部进行三维坐标测量.采用传统方法和快速曲面方法对扫描得到的面部点云数据进行曲面重建,并对结果进行误差分析和光顺性评价. 结果与结论：传统方法和快速曲面方法重建曲面与原始点云的最大误差分别为2.99 mm和0.69 mm,传统方法重建曲面的光顺性优于快速曲面方法.综合比较得出了快速曲面方法是更适合复杂曲面重建的高效的方法,为复杂曲面的三维重建提供了参考依据.

Comparison of classical surfacing and rapid surfacing for complex surface reconstruction

BACKGROUND：Reverse engineering technology has been widely used in surgery, and how to produce the model that meet the rapid prototyping processing rapidly and effectively has attracted more and more attention. OBJECTIVE：To compare the classical surfacing and rapid surfacing for complex surface reconstruction based on the summary of the commonly used surface reconstruction modeling technique. METHODS：VIVID9i non-contact three-dimensional digital scanner produced by Konica, Japan was used to perform the three-dimensional coordinate measuring on faces of 30 col ege students. The classical surfacing and rapid surfacing approaches were used to surfacing reconstruct the facial point cloud data, and to perform error analysis and smoothness evaluation. RESULTS AND CONCLUSION：The results show that the maximum distance of surfaces and point clouds reconstructed with the classical surfacing and rapid surfacing approaches were 2.99 mm and 0.69 mm. The surface made by classical surfacing approach was smoother than that made by rapid surfacing approach. There is a conclusion that rapid surfacing approach is more efficient method for complex surface reconstruction, and provides a reference for the three-dimensional reconstruction of complex surfaces.