title: Spectrum image analysis tool - A flexible MATLAB solution to analyze EEL and CL spectrum images.
abstract: Spectrum imaging techniques, gaining simultaneously structural (image) and spectroscopic data, require appropriate and careful processing to extract information of the dataset. In this article we introduce a MATLAB based software that uses three dimensional data (EEL/CL spectrum image in dm3 format (Gatan Inc.'s DigitalMicrograph®)) as input. A graphical user interface enables a fast and easy mapping of spectral dependent images and position dependent spectra. First, data processing such as background subtraction, deconvolution and denoising, second, multiple display options including an EEL/CL moviemaker and, third, the applicability on a large amount of data sets with a small work load makes this program an interesting tool to visualize otherwise hidden details.
authors.affiliation: Institute of Physics, University of Graz, Universitätsplatz 5, 8010 Graz, Austria; Institute for Electron Microscopy and Nanoanalysis, Graz University of Technology, Steyrergasse 17, 8010 Graz, Austria. Electronic address: franz.schmidt@uni-graz.at.
authors.forename: Franz-Philipp
authors.initials: FP
authors.lastname: Schmidt
authors.affiliation: Institute for Electron Microscopy and Nanoanalysis, Graz University of Technology, Steyrergasse 17, 8010 Graz, Austria.
authors.forename: Ferdinand
authors.initials: F
authors.lastname: Hofer
authors.affiliation: Institute of Physics, University of Graz, Universitätsplatz 5, 8010 Graz, Austria.
authors.forename: Joachim R
authors.initials: JR
authors.lastname: Krenn
keywords: Cathodoluminescence; Data processing; Electron energy loss spectroscopy; Plasmonics; Spectrum imaging