ORIENTED FILTRATION OF DIGITAL ELECTRON DIFFRACTION IMAGES

Abstract

A mathematical model, method and software are developed for the selection of spatial regions (bands) from their superposition on digital electron diffraction images, and also for the subsequent oriented filtration of images of bands. Edge effects, which occur when the spatial selection of band, are reduced due to creation a transition area around the band. Symmetric expansion of images of bands at a predetermined angle is used, which reduces distortion in image filtering. On the basis of experimental and simulated images of bands the optimal parameters of their filtration are determined. The oriented filtration of experimental images of bands in the future allows improving the accuracy of the electron diffraction methods intended for research of crystals.

Keywords

• цифрова обробка зображень, орієнтована фільтрація зображень, перетворення фур’є, згортка