Translator Disclaimer
Paper
25 September 2007 Turbulence effect mitigation using adaptive optics post-processing of holographically recorded short-exposure images
Author Affiliations +
Abstract
We present a post-processing technique for mitigating the effect of turbulence on holographically recorded short-exposure images that consists of the two following sequential steps. First, the coherent field scattered from the viewed object propagates through a turbulence layer and is used to record a short-exposure Fourier hologram by interference with a know reference beam. Information about the instantaneous distorted optical field is hence stored permanently in the hologram. Secondly, the recorded hologram is read a posteriori using the reference beam with its wavefront modulated using adaptive optics. The resulting intensity image is used to compute a sharpness metric. Optimization of the metric is performed using a stochastic parallel gradient descent (SPGD) algorithm. Experimental and numerical results show an improvement of the image quality after convergence of the SPGD algorithm.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mikhail A. Vorontsov, Mathieu Aubailly, and Rensheng Dou "Turbulence effect mitigation using adaptive optics post-processing of holographically recorded short-exposure images", Proc. SPIE 6708, Atmospheric Optics: Models, Measurements, and Target-in-the-Loop Propagation, 67080A (25 September 2007); https://doi.org/10.1117/12.735949
PROCEEDINGS
6 PAGES


SHARE
Advertisement
Advertisement
Back to Top