A pattern recognition method for lattice distortion measurement from HRTEM images.

摘要: The idea of the method is to analyse a crystal lattice by creating grid quadrilaterals corresponding repeated cells that are visible in image. This approach combines image processing elements with continuum field theory, create distortion-independent similarity measure used select most appropriate among possible configurations. Subsequently, displacement and distortion fields computed from individual cell positions. allows one obtain these even for images where periodic does not necessarily appear as single dot intensity high-resolution transmission electron microscopy (HRTEM) image, which results lower accuracy commonly approaches, namely geometric phase peak finding. obtained this verified quantitatively comparison known tensor distributions Burgers vector values on both simulated real images.