Demonstrates improved edge gradients with a new algorithm, suggesting significant enhancement in image processing techniques.
We present here a new restoring algorithm that is based on use of a “median-window filter.” This is intrinsically a nonlinear operation that, when cyclically used with any linear restoring algorithm, can typically enhance edge gradients by a factor of 5:1 with nearly a complete absence of Gibbs oscillation.
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B. Roy Frieden (1976) studied this question.
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