Malyshev A.   Knyazev A.  

Conjugate gradient acceleration of iterated edge-preserving smoothing filters

Reporter: Malyshev A.

 We propose acceleration of iterated versions of edge-preserving smoothing filters by running them through a conjugate gradient method, without deteriorating their quality. The filter non-linearity is dealt with by careful restarting and freezing. Our initial numerical experiments demonstrate 20x acceleration of the classical bilateral filter and 3x acceleration of the recently developed guided filter.

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