博士论文答辩：基于相位估计的多自由度精密位置测量及其应用
日期：2023/02/20 - 2023/02/20
博士论文答辩：基于相位估计的多自由度精密位置测量及其应用
主讲人：Qinrui Cheng, Ph.D. candidate at UM-SJTU Joint Institute
时间：2023年2月20日（周一）下午8:00
地点：密西根学院龙宾楼414A会议室
讲座摘要
Precision positioning is fundamental and critical in many fields of advanced industry and manufacturing, such as semiconductor production, machine tools control, and robot manipulation. Position measurement systems are demanded towards multi-degree-of-freedom (multi-DOF) measurement simultaneously with high resolution and large range. This dissertation presents a monocular vision method for high-precision 3-DOF and 6-DOF position measurement and extended applications on motion stage calibration and camera calibration. A simple system configuration with one industrial camera and a 2D encoded periodic pattern is employed. The phase estimation method is applied for high-accuracy and robust keypoint localization within one period of pattern. The findings from this dissertation have significant improvement and guidance upon phase-based position measurement and application design of the vision systems.
主讲人简介
Qinrui Cheng received the B.S. and M.S. degrees in instrument science and technology from Tianjin University in 2016 and 2019, respectively. She is currently a Ph.D. candidate at the UM-SJTU Joint Institute, supervised by Prof. Peisen Huang. Her current research interests include precision measurement, computer vision, optical metrology, and image processing.