CAREER: Dense Superfast 3D Sensing of Extremely Rapidly Changing Mechanical and Biological Scenes

该学院早期职业发展(CALEAR)奖的研究目标是创新一种千赫到兆赫的三维传感技术，具有相机像素(微米级)的空间分辨率，用于快速发生的机械和生物事件，如爆炸或活的心脏跳动。该方法包括将超快正弦相移技术与使用光学散焦技术的数字光处理(DLP)投影仪连接起来。具体地说，本研究将研究未经修改、廉价的DLP技术的图像生成机制，以准确和快速地捕获所需的图案，并将从理论和实验上探索散焦技术，以克服现有高速三维传感技术的局限性。教育目标是鼓励不同群体的参与，包括代表性不足的学生，并将这项研究的成果纳入教育活动。方法是在爱荷华州公共活动期间接触K-12学生和普通公众，开发用于教育的三维视频和数据存储库，并为学生提供暑期实习机会。从这项研究中获得的知识将对社会产生许多好处。在K-12课程中增加三维传感工具包和视频，同时丰富本科生和研究生工程课程，将加强光学、生物和传感教育。与虚拟现实教育探路者的合作将使这项研究能够激励处于风险中的学生探索他们在科学、技术、工程和数学领域的选择。此外，超高速三维传感技术将在关系到公众健康和安全的重要领域取得重大突破。医学器官的三维传感将提供更准确的诊断，并为外科医生在机器人手术中提供更直观的情况感知。用于结构测试的三维数据将帮助抗震结构界设计出更安全的建筑物，供人们工作和生活。

The research objective of this Faculty Early Career Development (CAREER) award is to innovate a kilo-Hertz to mega-Hertz three-dimensional sensing technique with camera-pixel (µm-level) spatial resolution for rapidly occurring mechanical and biological events such as explosions or live beating hearts. The approach involves bridging superfast sinusoidal phase-shifting techniques with digital-light-processing (DLP) projectors using an optical defocusing technique. Specifically, this research will examine the image-generation mechanism of unmodified, inexpensive DLP technology to capture required patterns precisely and rapidly and will theoretically and experimentally explore the defocusing technique to overcome the limitations of the existing high-speed, three-dimensional sensing techniques. The educational goals are to encourage the participation of diverse groups, including underrepresented students, and to integrate the outcomes of this research into educational activities. The approach is to reach out to K-12 students and the general public during Iowa State public events, to develop a repository of three-dimensional videos and data for education, and to provide students with summer internship opportunities.Knowledge obtained from this research will have many benefits to society. The addition of a three-dimensional sensing kit and videos to K-12 curricula along with the enrichment of both undergraduate and graduate engineering curricula will enhance optics, biology, and sensing education. Partnering with Virtual Reality Education Pathfinders will allow this research to inspire at-risk students to explore their options in Science, Technology, Engineering, and Mathematics fields. Furthermore, the superfast three-dimensional sensing technology will lead to major breakthroughs in fields important to public health and safety. Three-dimensional sensing of organs in medicine will offer more accurate diagnoses and provide surgeons with more intuitive situational awareness during robotic surgeries. Three-dimensional data for structural tests will aid the earthquake-resistant structures community in designing safer buildings for people to work and live in.