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Optical Engineering

Single exposure compressed imaging system with Hartmann-Shack wavefront sensor
Author(s): Xiao Xiao; Yang Zhang; Xiaowei Liu
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Paper Abstract

A new compressed imaging system based on compressed sensing (CS) theory is proposed. One single exposure with a frame sensor can replace a sequence of measurements, which is necessary in the conventional CS imaging systems. First, the phase of the incident light is randomly modulated in the Fourier transform domain using a spatial light modulator. When the modulated light passes through the inverse Fourier transform lens, the information of the optical field will spread out across the entire modulated image. Then, a Hartmann-Shack wavefront sensor is employed to sense the intensity and phase information in the final imaging plane. The resolution of the Hartmann-Shack wavefront sensor is far less than the inherent resolution of the imaging system. Finally, a high-resolution image can be reconstructed from the image partially sampled from the Hartmann-Shack wavefront sensor at any position. The numerical experiments demonstrate the effectiveness of the proposed imaging method.

Paper Details

Date Published: 5 May 2014
PDF: 7 pages
Opt. Eng. 53(5) 053101 doi: 10.1117/1.OE.53.5.053101
Published in: Optical Engineering Volume 53, Issue 5
Show Author Affiliations
Xiao Xiao, Xidian Univ. (China)
Yang Zhang, Xidian Univ. (China)
Xiaowei Liu, Xidian Univ. (China)

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