Linear-quadratic noise-smoothing filters for quantum-limited images.

Chah, C L; Katsaggelos, A K; Sahakian, A V · IEEE Trans Image Process · 1995

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Abstract

We consider the use of nonlinear estimators for the noise smoothing of images obtained under quantum-limited imaging conditions. A Volterra expansion is investigated from which a set of linear-quadratic filters is derived using higher order statistics. The filters are applicable for single frame and multiple frames of a single scene imaged under low-light levels.