Linear-quadratic noise-smoothing filters for quantum-limited images.
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.
Chah
C L
CL
Dept. of Electr. Eng. and Comput. Sci., Northwestern Univ., Evanston, IL.
Katsaggelos
A K
AK
Sahakian
A V
AV