重建小凸多面物体面形的新方法

New shape reconstruction method for little convex polyhedrons

为实现小凸多面物体面形快速重建,提出了基于投影轮廓的新方法。首先处理被测小凸多面物体各平行旋转角度下纵投影轮廓图像,得到对应轮廓序列集及横截面切片投影长度曲线集,然后由该曲线集得到所有疑似被测物体表平面的索引,将该索引对照各轮廓序列进行筛选,最后经计算得到被测物体的各表平面参数,完成面形重建。实验表明,该方法能够精确恢复被测小凸多面物体面形,与现有方法相比具有设备精简、速度快等特点,适用于针对小凸多面体工件的工程应用。

A projective silhouette based method was proposed to reconstruct the shape of little convex polyhedron.First,the vertical section projective silhouette images of little convex polyhedrons taken in every parallel rotary angle were processed,and the corresponding set of silhouette sequences and the set of cross section projective length curves were acquired.Next,the index of all the potential surface planes of measured object was gotten from the curves set,then these planes were filtered by comparing with eve...