29 January 2007 Real-time range imaging by phase-stamp method using correlation image sensor
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Abstract
This paper proposes a real-time phase-stamp range finder (PSRF) using a three-phase correlation image sensor (3PCIS). The system onsists of the same components as in the conventional light-stripe ange finder except the 3PCIS and a three-phase reference signal enerator. During a single scan of the sheet beam, the 3PCIS "stamps" the phase of the reference signals at the moment the light stripe is imaged on each pixel. The three-dimensional shape of the object is obtained in real time by converting the detected phase to the angle of the projected sheet beam. Compared to time-stamp VLSI range finders, the proposed PSRF is not affected by spatial nonuniformity in surface reflectance of the object and background illumination. It can be realized with a simpler architecture than the modulation-type PSRF previously proposed by the authors. Experimental results on a developed PSRF system are demonstrated.
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Akira Kimachi, Shigeru Ando, "Real-time range imaging by phase-stamp method using correlation image sensor", Proc. SPIE 6491, Videometrics IX, 64910A (29 January 2007); doi: 10.1117/12.696311; https://doi.org/10.1117/12.696311
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