题目： High-speed 3D optical sensing and applications
时间: 2014年10月8日, 9:00-10:00 am
地点: 科大西区力二楼215（多媒体教室）
Abstract:
Advances in optical imaging and machine/computer vision have provided
integrated smart sensing systems for the manufacturing industry; and
advanced 3D optical sensing could have profound impact on numerous fields,
with broader applications including manufacturing, biomedical engineering,
homeland security, and entertainment. Our research addresses the challenges
in high-speed, high-resolution 3D optical sensing and optical information
processing. For example, we have developed a system that simultaneously
captures, processes and displays 3D geometries at 30 Hz with over 300,000
measurement points per frame, which was unprecedented at that time (a decade
ago). Our current research focuses on achieving speed breakthroughs by
developing the binary defocusing techniques, and exploring novel means to
store enormously large 3D sensing data by innovating geometry/video
compression methods. The binary defocusing methods coincide with the
inherent operation mechanism of the digital-light-processing (DLP)
technology, permitting tens of kHz 3D optical sensing speed at camera pixel
spatial resolution. The novel methods of converting 3D data to regular 2D
counterparts offer us the opportunity to leverage mature 2D data compression
platform, achieving extremely high compression ratios without reinventing
the whole data compression infrastructure. In this talk, I will present two
platform technologies that we have developed: 1) superfast 3D optical
sensing; and 2) real-time 3D video telepresence. I will also cover some of
the applications that we have been looking into including cardiac mechanics,
wind-driven droplet/rivulet flow measurement, in-situ inspection, biometrics,
and minimally invasive tele-robotic surgery.
About the Speaker:
Starting in January 2015, Dr. Dr. Song Zhang will be a tenured associate
professor in mechanical engineering at Purdue University. Dr. Zhang is
currently a tenured associate professor of mechanical engineering at Iowa
State University (ISU). Dr. Zhang graduated with a B.S. degree from
University of Science and Technology of China in 2000; received his Ph.D.
degree in mechanical engineering from Stony Brook University in 2005; and
spent three years at Harvard before joining ISU in 2008. Dr. Zhang has
published over 70 journal articles; co-authored 6 book chapters; edited one
book; and filed 8 patent applications (two granted). 8 of his journal
articles were selected as cover page highlights. Two of his papers were
among the most cited papers during five-year periods for all papers
published by those respective journals. Besides being extensively utilized
in academia, the technologies he developed have been used by rock band
Radiohead to create a music video House of Cards; and by the Zaftig Films to
produce the incoming movie Focus (II). He has won the AIAA Best Paper Award,
the Best of SIGGRAPH by the Walt Disney, and the NSF CAREER award, and the
Early Career Engineering Faculty Research Award at ISU. Due to his
contributions to high-speed, high-resolution 3D optical sensing and optical
information processing, he was elected as the fellow of SPIE – The
International Society for Optics and Photonics.
时间: 2014年10月8日, 9:00-10:00 am
地点: 科大西区力二楼215（多媒体教室）
Abstract:
Advances in optical imaging and machine/computer vision have provided
integrated smart sensing systems for the manufacturing industry; and
advanced 3D optical sensing could have profound impact on numerous fields,
with broader applications including manufacturing, biomedical engineering,
homeland security, and entertainment. Our research addresses the challenges
in high-speed, high-resolution 3D optical sensing and optical information
processing. For example, we have developed a system that simultaneously
captures, processes and displays 3D geometries at 30 Hz with over 300,000
measurement points per frame, which was unprecedented at that time (a decade
ago). Our current research focuses on achieving speed breakthroughs by
developing the binary defocusing techniques, and exploring novel means to
store enormously large 3D sensing data by innovating geometry/video
compression methods. The binary defocusing methods coincide with the
inherent operation mechanism of the digital-light-processing (DLP)
technology, permitting tens of kHz 3D optical sensing speed at camera pixel
spatial resolution. The novel methods of converting 3D data to regular 2D
counterparts offer us the opportunity to leverage mature 2D data compression
platform, achieving extremely high compression ratios without reinventing
the whole data compression infrastructure. In this talk, I will present two
platform technologies that we have developed: 1) superfast 3D optical
sensing; and 2) real-time 3D video telepresence. I will also cover some of
the applications that we have been looking into including cardiac mechanics,
wind-driven droplet/rivulet flow measurement, in-situ inspection, biometrics,
and minimally invasive tele-robotic surgery.
About the Speaker:
Starting in January 2015, Dr. Dr. Song Zhang will be a tenured associate
professor in mechanical engineering at Purdue University. Dr. Zhang is
currently a tenured associate professor of mechanical engineering at Iowa
State University (ISU). Dr. Zhang graduated with a B.S. degree from
University of Science and Technology of China in 2000; received his Ph.D.
degree in mechanical engineering from Stony Brook University in 2005; and
spent three years at Harvard before joining ISU in 2008. Dr. Zhang has
published over 70 journal articles; co-authored 6 book chapters; edited one
book; and filed 8 patent applications (two granted). 8 of his journal
articles were selected as cover page highlights. Two of his papers were
among the most cited papers during five-year periods for all papers
published by those respective journals. Besides being extensively utilized
in academia, the technologies he developed have been used by rock band
Radiohead to create a music video House of Cards; and by the Zaftig Films to
produce the incoming movie Focus (II). He has won the AIAA Best Paper Award,
the Best of SIGGRAPH by the Walt Disney, and the NSF CAREER award, and the
Early Career Engineering Faculty Research Award at ISU. Due to his
contributions to high-speed, high-resolution 3D optical sensing and optical
information processing, he was elected as the fellow of SPIE – The
International Society for Optics and Photonics.