Comparison of a low-frequency Butterworth filter with a symmetric SE-filter

Abstract

The article compares two filters: a Butterworth filter and an asymmetric SEfilter.The experimental studydetermines their advantages and disadvantages.Also,experiments based on the peak signal-to-noise ratio(PSNR) metricshowvisual evaluation. The results of experimentsshow that a symmetric filter better restores images usinga small set of continuous function parametersthatare distorted by a low-frequency Gaussian filter.