Revisiting the use of squared magnitude function for the optimal approximation of (1 + α)-order Butterworth filter
Sign Up to like & getrecommendations! Published in 2019 at "AEU - International Journal of Electronics and Communications"
DOI: 10.1016/j.aeue.2019.152826
Abstract: Abstract Optimal rational approximation of the fractional-order Butterworth filter (FBF) based on a two-step design procedure is proposed. Firstly, the coefficients of the squared magnitude function of an approximant which matches the squared magnitude response… read more here.
Keywords: approximation; order butterworth; order; magnitude function ... See more keywords
Impacts of different reconstruction methods on the image quality of cadmium-zinc-telluride-based single photon emission computed tomography/computed tomography pulmonary perfusion imaging.
Sign Up to like & getrecommendations! Published in 2023 at "Nuclear medicine communications"
DOI: 10.1097/mnm.0000000000001710
Abstract: OBJECTIVE The objective was to evaluate the impacts of different reconstruction methods [filtered back projection (FBP) and ordered subset expectation maximization (OSEM)] and different filters (Butterworth filter and Gaussian filter) on the image quality in… read more here.
Keywords: gaussian filter; computed tomography; butterworth filter; filter ... See more keywords
Approximation of Fractional-Order Butterworth Filter Using Pole-Placement in W-Plane
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Circuits and Systems II: Express Briefs"
DOI: 10.1109/tcsii.2021.3074076
Abstract: This work presents a new technique to approximate the fractional-order Butterworth filter using the pole-placement in the W-plane. Initially, poles of the fractional-order Butterworth transfer function are obtained by replacing the complex frequency s with… read more here.
Keywords: butterworth; order butterworth; order; fractional order ... See more keywords