Title :

The Inertial Measurement Unit (IMU) Based Human Body Motion Capture Technology

Speaker :

Dr. Tristan, Ruoli Dai

Co-Founder, Noitom Limited

CTO, Miteno Intelligence Technology Limited, China

Venue :

Room 215, William M. W. Mong Engineering Building, CUHK

Date :

Mar 20, 2012, Tuesday
2:00 PM - 3:00 PM

Abstract :

Motion capture started as a photogrammetric analysis tool in biomechanics research in the 1970s and 1980s, and expanded into education, training, sports and computer animation for television, cinema, and video games as the technology matured. Traditional optical systems utilize data captured from image sensors to triangulate the 3D position of a subject between one or more cameras calibrated to provide overlapping projections. Data acquisition is traditionally implemented using special markers attached to an actor.

Since the 90’s, researchers started to use inertial sensors for human body motion capture. The IMUs are originally used for aircraft heading and aviation posture monitoring. The booming of MEMS sensors makes it possible to design and manufacture miniature, high precision IMUs in a very cost-effective way. IMU based motion capture system is much more compact, easier to use, affordable, and not subject to the problems such as marker swapping and high environmental requirement.

The speaker and his team managed to build a wireless, high-speed, full body motion capture system by using in-house designed IMUs and wireless transmission protocols. The introduced motion capture system could be used in the field of animation/movie making, sport training, medical diagnostic / rehabilitation, human machine interaction, robot controlling and relative research topic such as computer graphics, biomechanics, biomedical, computer science and robotics.

Biography :

Dr. Tristan, Ruoli Dai has studied and worked in ACAE (MAE) / CUHK for 6 years and received his MPhil and PhD degrees from CU in 2004 and 2007 respectively. Dai’s research was focusing on passive and active vibration damping in his academia life and he shifted his interest to sensor application when he started his industrial career. Dr. Dai has published more than 20 papers and he is holding 9 patents.

Dr. Dai is the co-founder of three companies and currently works for Miteno Intelligence Limited as Chief Technology Officer. Dr. Dai’s business is mainly in the field of structure health monitoring, smart electronics and motion capture.

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Enquiries: Ms. Winnie Wong, Department of Mechanical and Automation Engineering, CUHK at 3943 8337. *MAE Series (2011-12) is contained in the World-Wide Web home page at http://www3.mae.cuhk.edu.hk/maeseminars.php#mae.