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基于投影光刀的关节面轮廓旋转检测

Rotation Detection of Prosthetic Joint Surface Profile Based on Projection Light Knife

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摘要

设计了基于投影光刀的关节面三维轮廓旋转检测系统。采用摄像机针孔模型, 实现了检测系统的快速标定; 通过优化的重心算法, 提取出投影光刀的中心线, 获取了关节面的截面轮廓线; 通过分析投影光刀平面与转轴之间的夹角, 完成了截面轮廓线的倾斜校正, 实现了关节面三维轮廓数据的准确重建。结果表明, 该检测系统具有非接触、高精度等特点, 可有效解决股骨假体关节面的复杂轮廓检测问题。

Abstract

A rotation detection system of three-dimensional (3D) joint surface profile based on projection light knife is designed. The rapid calibration of the detection system is realized by the use of the camera pinhole model. The center-line of the projection light knife is extracted through the optimized center of gravity algorithm, and thus the contour line of the joint surface is acquired. The oblique correction of section profile is realized by the analysis of the angle between the projection light knife plane and the rotation axis. The 3D profile data of joint surface are accurately reconstructed. The results show that the detection system possesses the advantages such as non-contact and high precision, which can be used to solve the detection problem of prosthetic joint surface profile.

Newport宣传-MKS新实验室计划
补充资料

中图分类号:TP302

DOI:10.3788/lop55.091205

所属栏目:仪器,测量与计量

基金项目:陕西省教育厅重点实验室项目(17JS048)、西安工业大学校长基金(XAGDXJJ17002)

收稿日期:2018-03-15

修改稿日期:2018-03-29

网络出版日期:2018-04-16

作者单位    点击查看

王小娟:西安工业大学理学院, 陕西 西安 710032
刘丙才:西安工业大学光电工程学院, 陕西 西安 710032

联系人作者:王小娟(jellywxj@163.com)

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引用该论文

Wang Xiaojuan,Liu Bingcai. Rotation Detection of Prosthetic Joint Surface Profile Based on Projection Light Knife[J]. Laser & Optoelectronics Progress, 2018, 55(9): 091205

王小娟,刘丙才. 基于投影光刀的关节面轮廓旋转检测[J]. 激光与光电子学进展, 2018, 55(9): 091205

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