Abstract
A constrained least-squares solution based on a second difference smoothing
measure is obtained for images which are distorted by a bilinear (quadratic and
with nonzero memory) system in the presence of additive signal-independent
noise. Results are applied to a partially coherent diffraction-limited imaging
system. It is found that the optimum weight given to the smoothness factor is
larger for a coherent (nonlinear) system than for an incoherent (linear) system.
However, the restoration quality improves as the imaging system approaches
incoherence.
© 1983 Optical Society of America
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