Abstract

Sampled irradiance measurement in the image plane of a coherently illuminated object are used to estimate the 2D object brightness profile in a shear beam imaging configuration. A field correlation function is used in a minimum variance irradiance estimation algorithm to optimally estimate the objects 2D brightness from a collection of sampled irradiance measurements on a grid of points in the image plane. The efficacy of the reconstruction method is demonstrated by reconstructing simulated coherently illuminated images of a symmetric extended object, an asymmetric extended object and also a spatially distended point source object. A theoretical error metric is determined and shown to compare favorably with simulated results over a range of object sizes.© (1999) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

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