22 August 1980 Noise Properties Of Images Reconstructed From Fourier Modulus
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Proceedings Volume 0231, 1980 Intl Optical Computing Conf I; (1980) https://doi.org/10.1117/12.958834
Event: 1980 Technical Symposium East, 1980, Washington, D.C., United States
Abstract
Computer experiments were performed to determine the effects of photon noise on reconstructing images from stellar speckle interferometer data. Estimates of the modulus of the Fourier transform of an extended space object were computed using the method of Labeyrie on degraded images simulated to include the effects of atmospheric turbulence and photon noise (Poisson statistics). Several Fourier modulus estimates with different signal-to-noise ratios were computed by assuming different brightness levels (photons per pixel) for the object in each case. Images were reconstructed from the Fourier modulus estimates using an iterative method based on the nonnegativity of the object. It was found that the rms error of a reconstructed image is roughly equal to the square root of the rms error of the Fourier modulus estimate.
© (1980) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. B. Feldkamp, J. R. Fienup, "Noise Properties Of Images Reconstructed From Fourier Modulus", Proc. SPIE 0231, 1980 Intl Optical Computing Conf I, (22 August 1980); doi: 10.1117/12.958834; https://doi.org/10.1117/12.958834
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