نتایج جستجو برای: k filter

تعداد نتایج: 495697  

Journal: :Journal of Cosmology and Astroparticle Physics 2018

Journal: :IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 2021

Journal: :International Journal of Advances in Intelligent Informatics 2016

Journal: :Applied optics 2015
Gunther P Können

The degree of polarization of rainbows of order k with k≥3 is bounded in the interval [75%, 78%], where 75% is the limit for k→∞. A polarization filter can improve the signal-to-background ratio of the third and fourth rainbows by a factor of 2, which may lift their visibilities in natural circumstances above the threshold of human visual perception. Under optimal circumstances, the latter may ...

2000
Tushar Bhangale Uday B. Desai Upendra Sharma

Clusters of Microcalcifications which appear like small white grains of sand on Mammograms are the earliest signs of Breast Cancer. In this work we employ a Gabor filter bank for texture analysis of mammograms to detect microcalcifications. A subset of the Gabor filter bank with a certain central frequency and different orientations is used to obtain the Gabor-filtered images. The filtered imag...

2015
David J. Posson Radda Rusinova Olaf S. Andersen Crina M. Nimigean

Ion channel opening and closing are fundamental to cellular signalling and homeostasis. Gates that control K(+) channel activity were found both at an intracellular pore constriction and within the selectivity filter near the extracellular side but the specific location of the gate that opens Ca(2+)-activated K(+) channels has remained elusive. Using the Methanobacterium thermoautotrophicum hom...

Journal: :IEEE Trans. Signal Processing 2002
James P. Reilly Matthew R. Wilbur Michael Seibert Nima Ahmadvand

In this paper, we show that an NPR M -channel filter bank with a diagonal system inserted between the analysis and synthesis filter banks may be used to decompose an FIR system of order L into M complex subband components each of order L K , where K is the downsampling rate. This decomposition is at the expense of using complex arithmetic for the subband processing. The theory surrounding the p...

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