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基于相机阵列的新型牙科三维扫描仪

Novel dental 3D scanner based on camera array

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摘要

为解决传统牙科三维扫描仪扫描中的抖动问题,提出了一种基于相机阵列的新型牙科三维扫描仪。利用多个不同视场的相机可以直接单次照相获取目标的三维信息,避免了扫描过程中抖动带来的影响,提高系统实时性。由于牙齿尺寸较小,所以选择微透镜阵列代替大型相机阵列,在减小系统体积的同时可以更好地保证相机间光轴的平行度。实验结果显示,系统最终实现了单颗牙齿的视差和深度计算。系统结构简单,便于小型化和低成本口内牙齿三维测量设备的研制,进一步推进医学数据的数字化进程。

Abstract

In order to solve the jitter problem in traditional dental 3D scanner, a novel 3D dental scanner based on camera array is proposed. Camera array can obtain three-dimensional information directly by single snapshot, avoiding the influence of jitter during scanning. Moreover, the size of the tooth is small, the micro lens array is selected to replace the camera array, and the parallelism of the optical axis between the cameras can be ensured. The experimental result shows that the system finally realizes the depth and disparity acquisition of a single tooth. Besides, the system is simple in structure, which is preparation for subsequent miniaturization and low cost equipment for 3D measurement of intra-oral teeth and further promotes the digitalization of medical data.

Newport宣传-MKS新实验室计划
补充资料

中图分类号:O439

所属栏目:生物光学

基金项目:深圳市科技计划项目(JCYJ20150402152005632)

收稿日期:2017-11-10

修改稿日期:2018-03-16

网络出版日期:--

作者单位    点击查看

张泽霞:北京理工大学 光电学院, 北京 100081
胡晓聪:深圳市宝安区人民医院, 广东 深圳 518100
武楚晗:北京理工大学 光电学院, 北京 100081
常军:北京理工大学 光电学院, 北京 100081

联系人作者:张泽霞(543388583@qq.com)

备注:张泽霞(1994-),女,硕士研究生,从事光学工程研究。

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引用该论文

ZHANG Zexia,HU Xiaocong,WU Chuhan,CHANG Jun. Novel dental 3D scanner based on camera array[J]. Optical Technique, 2019, 45(1): 112-116

张泽霞,胡晓聪,武楚晗,常军. 基于相机阵列的新型牙科三维扫描仪[J]. 光学技术, 2019, 45(1): 112-116

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