Real-time 3D imager based on spatio-temporal phase unwrapping
N Ono, T Shimizu, T Kurihara… - SICE 2004 Annual …, 2004 - ieeexplore.ieee.org
N Ono, T Shimizu, T Kurihara, S Ando
SICE 2004 Annual Conference, 2004•ieeexplore.ieee.orgIn this paper, we propose a novel 3D measurement system, which consists of 1) spatially
phase-modulated light, which have a single frequency for time but have different phase
according to the projection angle, and 2) the correlation image sensor (CIS), which
generates temporal correlations between light intensity and three external reference signals
on each pixel. Within a frame, amplitude and phase of the light are demodulated by the CIS.
Then, the projection angle map is obtained based on spatio-temporal phase unwrapping …
phase-modulated light, which have a single frequency for time but have different phase
according to the projection angle, and 2) the correlation image sensor (CIS), which
generates temporal correlations between light intensity and three external reference signals
on each pixel. Within a frame, amplitude and phase of the light are demodulated by the CIS.
Then, the projection angle map is obtained based on spatio-temporal phase unwrapping …
In this paper, we propose a novel 3D measurement system, which consists of 1) spatially phase-modulated light, which have a single frequency for time but have different phase according to the projection angle, and 2) the correlation image sensor (CIS), which generates temporal correlations between light intensity and three external reference signals on each pixel. Within a frame, amplitude and phase of the light are demodulated by the CIS. Then, the projection angle map is obtained based on spatio-temporal phase unwrapping method we propose. We implemented this system using our CMOS 200 /spl times/ 200 pixel CIS, and successfully reconstructed the range map in real time.
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