Single exposure compressed imaging system with Hartmann-Shack wavefront sensor

Xiao Xiao; Yang Zhang; Xiaowei Liu

doi:10.1117/1.OE.53.5.053101

5 May 2014 Single exposure compressed imaging system with Hartmann-Shack wavefront sensor

Xiao Xiao, Yang Zhang, Xiaowei Liu

Author Affiliations +

Funded by: Basic Science Research Fund in Xidian University

Optical Engineering, Vol. 53, Issue 5, 053101 (May 2014). https://doi.org/10.1117/1.OE.53.5.053101

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.

Citation Download Citation

Xiao Xiao, Yang Zhang, and Xiaowei Liu "Single exposure compressed imaging system with Hartmann-Shack wavefront sensor," Optical Engineering 53(5), 053101 (5 May 2014). https://doi.org/10.1117/1.OE.53.5.053101

Published: 5 May 2014

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