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• W2883518983 abstract "This article is concerned with synthesizing filter with finite impulse response (FIR-filters) employed to correct radially symmetric distortions such as defocusing. We propose a new parametric class of finite impulse response filters (FIR-filters) based on a model of the one-dimensional radially symmetric frequency response. In the proposed method, the one-dimensional frequency response is composed of quadratic and exponential functions. The two-dimensional impulse response of the filter is constructed by sampling one-dimensional impulse responses for all directions. The development consists in introducing an extended mid-frequency region of the frequency response, thus increasing the contribution of the frequencies to image correction. Examples are given in order to illustrate the possibility of the high-quality distortion correction. In particular, it is shown that the proposed method provides the restoration quality higher than that obtained when using an optimal Wiener filter (taken from OpenCV)." @default.
• W2883518983 created "2018-08-03" @default.
• W2883518983 creator A5067403491 @default.
• W2883518983 date "2018-01-01" @default.
• W2883518983 modified "2023-10-17" @default.
• W2883518983 title "Constructing a quadratic-exponential FIR-filter with an extended frequency response midrange" @default.
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• W2883518983 doi "https://doi.org/10.18287/2412-6179-2018-42-2-297-305" @default.
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