TY - GEN
T1 - Some recent advance on high-speed, high-resolution 3-D shape measurement using projector defocusing
AU - Zhang, Song
AU - Gong, Yuanzheng
AU - Wang, Yajun
AU - Laughner, Jacob
AU - Efimov, Igor R.
PY - 2010
Y1 - 2010
N2 - High-speed, high-resolution 3-D shape measurement becomes increasingly important, with broad applications including medicine, homeland security, and entertainment. In recent years, we have made some progress, and developed an unprecedented 60 Hz rate 3-D shape measurement system with a digital fringe projection and phase-shifting method. However, a hardware bottleneck was met to further improve its speed. Since 2009, we have been studying a new method that could potentially eliminate this speed bottleneck. This technique is essentially to generate sinusoidal fringe patterns by properly defocusing binary ones. It coincides with the operation mechanism of the digital-light-processing (DLP) technology, and thus permits some speed breakthroughs. This paper summarizes some of our recent studies with this technology. In particular, we will include three major pieces: (1) double the speed of our real-time 3-D shape measurement system without significantly increase the hardware cost; (2) reach tens-of-kHz rate 3-D shape measurement by using a relatively inexpensive and off-the-shelf DLP projector; and (3) achieve kHz rate phase shifting for superior high-speed, high-quality 3-D shape measurement with the DLP Discovery platform. We will explain the principles of the technology, show some experimental results, and discuss the advantages and shortcomings of this technology.
AB - High-speed, high-resolution 3-D shape measurement becomes increasingly important, with broad applications including medicine, homeland security, and entertainment. In recent years, we have made some progress, and developed an unprecedented 60 Hz rate 3-D shape measurement system with a digital fringe projection and phase-shifting method. However, a hardware bottleneck was met to further improve its speed. Since 2009, we have been studying a new method that could potentially eliminate this speed bottleneck. This technique is essentially to generate sinusoidal fringe patterns by properly defocusing binary ones. It coincides with the operation mechanism of the digital-light-processing (DLP) technology, and thus permits some speed breakthroughs. This paper summarizes some of our recent studies with this technology. In particular, we will include three major pieces: (1) double the speed of our real-time 3-D shape measurement system without significantly increase the hardware cost; (2) reach tens-of-kHz rate 3-D shape measurement by using a relatively inexpensive and off-the-shelf DLP projector; and (3) achieve kHz rate phase shifting for superior high-speed, high-quality 3-D shape measurement with the DLP Discovery platform. We will explain the principles of the technology, show some experimental results, and discuss the advantages and shortcomings of this technology.
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U2 - 10.1109/ISOT.2010.5687375
DO - 10.1109/ISOT.2010.5687375
M3 - Conference contribution
AN - SCOPUS:79951476402
SN - 9781424476848
T3 - 2010 International Symposium on Optomechatronic Technologies, ISOT 2010
BT - 2010 International Symposium on Optomechatronic Technologies, ISOT 2010
T2 - 2010 International Symposium on Optomechatronic Technologies, ISOT 2010
Y2 - 25 October 2010 through 27 October 2010
ER -