Development of an ultra-high-speed 3D profilometer for real-time, kilohertz display volumetric imaging

开发用于实时千赫兹显示体积成像的超高速 3D 轮廓仪

• 批准号: 518249-2017
• 负责人: Liang, Jinyang
• 金额: $ 1.82万
• 依托单位: Institut national de la recherche scientifique
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=639563
• 关键词: Development; ultra; speed; 3D; profilometer

Three-dimensional (3D) optical metrology is of great importance to myriad applications. Among existingtechnologies, the structured light (SL) 3D profilometry based on a digital micromirror device (DMD) hasobtained increasing popularity owing to its flexibility and low cost. Despite the fast improvement in depthresolution and responding spectrum, the imaging and display speed of SL-based 3D profilometry has not keptpace, mainly due to two difficulties. First, current themes of single-shot sinusoidal fringe projection haveresidual noise and are subject to distortion induced by phase aberration. Second, the state-of-the-art high-speedcameras in existing SL-based 3D profilometers do not possess a sufficient data download speed.Ajile Light Industries (ALI) is Canada's leading DMD-based 3D profilometry designing and manufacturingcompany. ALI has been seeking novel methods to increase the volumetric rate of their AjileWARE 3D camerato kHz levels. At 2016 SPIE's Photonics West conference, ALI established a collaboration with Prof. Liang onthis topic. As an initial step to promote this university-industry partnership, this Engage application aims todevelop an ultra-high-speed 3D profilometer capable of single-shot, precise sinusoidal pattern projection andreal-time, continuous-streaming 3D imaging at kHz frame rates.The proposed project comes in the auspicious confluence of talents. Prof. Liang's group has extensiveresearch experience in imaging instrument designing, ultrafast 3D imaging, and DMD-based laser beamshaping. ALI will provide the 3D reconstruction software and their DMD controller system. Thecomplementary expertise, fully covering the knowledge scope of the project, will ensure the successful andprompt completion of the proposed project. It is envisioned that the developed profilometer will open newavenues in both scientific research and industrial applications. The generated knowledge and technicalknow-how will assist in future product development and technology transfer.

三维(3D)光学计量在众多应用中具有重要意义。在现有的技术中，基于数字微镜器件(DMD)的结构光(SL)三维轮廓术因其灵活性和低成本而得到越来越广泛的应用。尽管基于SL的三维轮廓术在深度分辨率和响应光谱方面有了快速的提高，但成像和显示速度并没有跟上，主要是由于两个方面的困难。首先，当前单次正弦条纹投影的主题具有残余噪声，并且容易受到相位像差引起的失真。其次，现有基于SL的三维轮廓仪中最先进的高速摄像机不具备足够的数据下载速度。爱乐轻工(ALI)是加拿大领先的基于DMD的三维轮廓仪设计和制造公司。阿里一直在寻找新的方法来提高其AjileWARE 3D Camerato khz级别的体积速率。在2016年SPIE的光子学西部大会上，阿里与梁教授就这一话题建立了合作关系。作为促进这一产学研合作的第一步，这项Engage应用旨在开发一种超高速3D轮廓仪，能够进行单次精确的正弦图案投影，并以KHz帧速率实时、连续地进行3D成像。拟议的项目是在人才汇聚的吉祥时刻到来的。梁教授的团队在成像仪器设计、超高速3D成像和基于DMD的激光光束整形方面拥有丰富的研究经验。阿里将提供3D重建软件和他们的DMD控制系统。全面涵盖项目知识范围的补充专业知识将确保拟议项目的成功和迅速完成。可以预见，研制的轮廓仪将在科学研究和工业应用方面开辟新的领域。产生的知识和技术诀窍将有助于未来的产品开发和技术转让。