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19 September 2014 Optical design and characterization of an advanced computational imaging system
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Abstract
We describe an advanced computational imaging system with an optical architecture that enables simultaneous and dynamic pupil-plane and image-plane coding accommodating several task-specific applications. We assess the optical requirement trades associated with custom and commercial-off-the-shelf (COTS) optics and converge on the development of two low-cost and robust COTS testbeds. The first is a coded-aperture programmable pixel imager employing a digital micromirror device (DMD) for image plane per-pixel oversampling and spatial super-resolution experiments. The second is a simultaneous pupil-encoded and time-encoded imager employing a DMD for pupil apodization or a deformable mirror for wavefront coding experiments. These two testbeds are built to leverage two MIT Lincoln Laboratory focal plane arrays – an orthogonal transfer CCD with non-uniform pixel sampling and on-chip dithering and a digital readout integrated circuit (DROIC) with advanced on-chip per-pixel processing capabilities. This paper discusses the derivation of optical component requirements, optical design metrics, and performance analyses for the two testbeds built.
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R. Hamilton Shepard, Christy Fernandez-Cull, Ramesh Raskar, Boxin Shi, Christopher Barsi, and Hang Zhao "Optical design and characterization of an advanced computational imaging system", Proc. SPIE 9216, Optics and Photonics for Information Processing VIII, 92160A (19 September 2014); https://doi.org/10.1117/12.2060725
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