Version 1.2  (10/01/2018)

FTL-SE is a program for performing Fourier Transforms, which can be useful in teaching Crystallography, since they are related to Optical Transforms (e.g. laser diffraction patterns). Furthermore one may get a quick hands-on experience with the usefulness of processing images in the frequency domain for certain band filters etc. This software is Freeware and can be distributed freely.

The program includes images, HTML tutorials (English, French) and the PDF article by E.Aubert & C.Lecomte, "Illustrated Fourier transforms for crystallography", J.Appl.Cryst. (2007), 40, 1153-1165.

• Forward & Inverse Fourier Transform 
• Low-Pass Filter
• High-Pass Filter
• Custom-Mask Filter (for removing Fourier peaks)
• Image Histograms, Images may be dragged
• Swap Phase Sets
• Randomize / Discard FT Phases
• Randomize / Discard FT Magnitudes 
• Easy Image Import (Load, Paste, Drag-Drop)
• Basic Image Drawing Function (Freehand & Lattice) 
• Basic Scripting Functions 
• Extensive HTML Tutorial (Aubert, Lecomte)
• VISTA-Ready by using accessible user folder
• Three Fourier Java-Applets included
• View FT Image line profile; More FT data export options
• Zoomed FT Image (Alt-key); Three-column FT data export
• New: Batch Processing & Image Saving
• New: Manual FT brightness factor input
  
  

Click the link below for downloading the self-extracting installation. Select "Run" or "Open" to run the setup program immediately or select "Save" to save the file to your computer. 

• Click here to download FTL-SE (6.8 MB, Version 1.2  10/01/2018)
  

The Windows Display Property has to be in 32-bit color mode, otherwise the FT images will be corrupted. The screen resolution must be at 96 DPI.