title: FT3D: three-dimensional Fourier analysis on small Unix workstations for electron microscopy and tomographic studies.
abstract: FT3D is a self-contained package of tools for three-dimensional Fourier analysis, written in the C language for Unix workstations. It can evaluate direct transforms of three-dimensional real functions, inverse transforms, auto- and cross-correlations and spectra. The library has been developed to support three-dimensional reconstructions of biological structures from projections obtained in the electron microscope. This paper discusses some features of the library, which has been implemented in such a way as to profit from the resources of modern workstations. A table of elapsed times for jobs of different dimensions with different RAM buffers is reported for the particular hardware used in the authors' laboratory.
authors.affiliation: Istituto di Chimca Strutturistica Inorganica, Università degli Studi, Milano, Italy.
authors.forename: S
authors.initials: S
authors.lastname: Lanzavecchia
authors.forename: P L
authors.initials: PL
authors.lastname: Bellon
authors.forename: L
authors.initials: L
authors.lastname: Tosoni
mesh_terms: D000465:Algorithms; D003199:Computer Systems; D005583:Fourier Analysis; D008854:Microscopy, Electron / Q000706:statistics & numerical data*; D012984:Software; D014054:Tomography / Q000706:statistics & numerical data*