基于相机阵列的新型牙科三维扫描仪

张泽霞; 胡晓聪; 武楚晗; 常军

光学技术, 2019, 45 (1): 112, 网络出版: 2019-04-16

基于相机阵列的新型牙科三维扫描仪

Novel dental 3D scanner based on camera array

论文大纲

张泽霞 ^1,*胡晓聪 ²武楚晗 ¹常军 ¹

作者单位

¹ 北京理工大学光电学院，北京 100081

² 深圳市宝安区人民医院，广东深圳 518100

牙科扫描仪相机阵列立体视觉 dental scanner camera array stereo vision

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.

参考文献

[1] 白艳来. 基于结构光三维视觉技术的牙模反求系统研制［D］. 哈尔滨: 哈尔滨工业大学,2011.

Bai Yanlai. Research and development of reverse system for dental model based on structured light and three-dimensional ［D］.Harbin: Harbin Institute of Technology,2011.

[2] Miyazaki T, Hotta Y, Kunii J, et al. A review of dental CAD/CAM: current status and future perspectives from 20 years of experience［J］. Dental Materials Journal,2009,28(1):44-56.

[3] Hong Seok P, Chintal S. Development of high speed and high accuracy 3d dental intra oral scanner ☆［J］. Procedia Engineering,2015,100:1174-1181.

[4] 蔡文泽. 基于线结构光牙齿三维轮廓测量关键技术研究［D］. 西安:西安工业大学,2016.

Cai Wenze. Study on key techniques of denture 3d measurement based on linear-structure light［D］. Xi’an:Xi'an Technological University,2016.

[5] 于书娟, 汪大林, 李笑梅, 等. 三维激光扫描技术建立附着体义齿的三维数字化模型［J］. 临床口腔医学杂志,2005,21(3):160-162.

Yu Shujuan, Wang Dalin, Li Xiaomei, et al.. Three-demensional digital model of attachment dental reconstructed by laser scan［J］. Journal of Clinical Stomatology,2005,21(3):160-162.

[6] Sinescu C, Negrutiu M, Faur N, et al. Dental scanning in CAD/CAM technologies: laser beams［C］// Biomedical Optics. International Society for Optics and Photonics. California, United states :SPIE,2008:68430E-68430E-9.

[7] Riehemann S, Palme M, Kuehmstedt P, et al. Microdisplay-based intraoral 3d scanner for dentistry［J］. Journal of Display Technology,2011,7(3):151-155.

[8] Shin M H, Chang R, Kim T Y, et al. Development of image-space telecentric lens for intra-oral 3D scanner［J］. Journal of the Optical Society of Korea,2015,19(3):303-310.

[9] 李科, 张俊, 鲁翠欣.一种扫描并构建三维牙颌的方法及图像采集装置201410097928.6 ［P］. 2014-06-18.

Li Ke, Zhang Jun, Lu Cuixin. A method of scanning and constructing 3D dental and image collecting device 201410097928.6 ［P］. 2014-06-18.

[10] 刘伟. 基于多目立体视觉的牙模三维数字化采集与重建研究［D］. 成都: 电子科技大学,2013.

Liu Wei. A research of acquiring and reconstructing 3d dental based on muti-view stereo vision［D］. Chengdu::University of Electronic Science and Technology of China,2013.

[11] 廖晟玮. 基于多目立体视觉的三维重建研究［D］. 沈阳: 东北大学, 2015.

Liao Shengwei. Research of 3D reconstruction based on multi-view stereo vision［D］. Shenyang: Northeastern University,2015.

[12] Florczyk S. Video based indoor exploration with autonomous and mobile robots［J］. Journal of Intelligent & Robotic Systems,2005,41(4):245-262.

[13] 张以谟. 应用光学［M］. 北京: 电子工业出版社,2015:112-116.

Zhang Yimu. Applied optics［M］. Beijing:Electronics Industry Press,2015:112-116.

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

基于相机阵列的新型牙科三维扫描仪

关于本站 Cookie 的使用提示

全站搜索

基于相机阵列的新型牙科三维扫描仪

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索