Dresden 2017 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 62: Magnetic Imaging (Experimental Techniques)
MA 62.5: Vortrag
Freitag, 24. März 2017, 10:45–11:00, HSZ 403
Resolution enhancement of magneto-optical images using modern image processing algorithms — •Dmitry Berkov1, Natalia Gorn1, Ivan Soldatov2, and Rudolf Schäfer2 — 1General Numerics Research Lab, Moritz-von-Rohr-Str. 1A, Jena, Germany — 2IFW Dresden, Helmholtzstraße 20, 01069 Dresden, Germany
A systematic study of the possibilities to suppress the noise and enhance the resolution of magneto-optical images using modern image processing methods is presented. We compare the performance of various methodical classes of processing algorithms, including regularized pseudoinverse filter, Wiener filter, Richardson-Lucy-algorithm [1,2] and fast Total Variation regularization [3,4]. In addition, we discuss experimental possibilities to obtain the point spread function of a Kerr microscope, which knowledge is still crucial for the effective resolution enhancement of this instrument, despite the existence of so-called blind deconvolution methods. Numerical test results and results obtained on magnetic films with skyrmion-like structures are shown
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