Accurate pixel-to-pixel correspondence adjustment in a digital micromirror device camera by using the phase-shifting moiré method
Applied Optics, Vol. 45, Issue 27, pp. 6940-6946 (2006)
http://dx.doi.org/10.1364/AO.45.006940
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Abstract
A camera based on the digital micromirror device (DMD) technology
has been previously developed. In this optical system, the correspondence of each
mirror of the DMD to each pixel of the CCD cannot readily be done since
the pixel sizes of the DMD and the CCD are very small. An
accurate pixel-to-pixel correspondence adjustment in the DMD camera by means of
the phase-shifting moiré method is proposed. To perform high accurate
adjustment of the optical system, the phase distribution of a moiré fringe pattern
is analyzed when the CCD pixels and the DMD mirrors have a mismatch
and∕or misalignment with each other. This technique does not need a complicated
setting or complex image processing to generate the moiré fringe pattern,
and it needs only one captured image. In the adjustment experiment, the
proposed method provided very accurate adjustment whose error was less than
© 2006 Optical Society of America
OCIS Codes
(100.2650) Image processing : Fringe analysis
(110.2970) Imaging systems : Image detection systems
(120.4120) Instrumentation, measurement, and metrology : Moire' techniques
(220.1140) Optical design and fabrication : Alignment
(230.3990) Optical devices : Micro-optical devices
History
Original Manuscript: February 9, 2006
Revised Manuscript: April 21, 2006
Manuscript Accepted: April 28, 2006
Citation
Shien Ri, Motoharu Fujigaki, Toru Matui, and Yoshiharu Morimoto, "Accurate pixel-to-pixel correspondence adjustment in a digital micromirror device camera by using the phase-shifting moiré method," Appl. Opt. 45, 6940-6946 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-27-6940
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