Gwyddion 2.1 review

Gwyddion project is a modular program for SPM data analysis

License: GPL (GNU General Public License) File size: 0K Developer: David Necas

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Gwyddion project is a modular program for SPM data analysis. Primarily it is supposed to be used for analysis of height fields obtained by means of scanning probe microscopy techniques (AFM, MFM, STM, NSOM), but generally it can be used for any other height field analysis or image analysis.

Gwyddion is free software, covered by GNU General Public License. The main idea behind Gwyddion developement is to provide modular program for 2D data analysis that could be easily extended by modules and plug-ins with no need of core recompilation.

Moreover, the status of free software enables to provide source codes to developers and users, which makes the further program improvement easier.

Gwyddion can be currently used with Linux, Microsoft Windows, and FreeBSD operating systems. All systems can be used also for developement. For graphical interface, Gtk+ libraries are used, therefore it can be basically ported on any system that is supported by Gtk+.

Here are some key features of "Gwyddion":
visualization: false color representation, shading, gradient and edge detection, local contrast representation
OpenGL 3D data display: false color or material representation
basic operations: rotation, inversion, data arithmetic, crop, resize
leveling: plane leveling, profiles leveling, three-point leveling, facet leveling, polynomial leveling
profiles: profile extraction, measuring distances in profile graph, profile export
filtering: mean, median, conservative denoise
statistical functions: Ra, RMS, histograms, correlation functions, PSDF, 1D and 2D angular distributions
grains: threshold marking, watershed marking, grain size distribution
intergral transforms: 2D FFT, 2D continuous wavelet transform (CWT), 2D discrete wavelet transform (DWT), wavelet anisotropy detection
fractal dimension analysis
data correction: spot remove, outlier marking, scar marking, modus line correction, removal of data under arbitrary mask
automatic xy plane rotation correction
basic mask operations: inversion, extraction, expansion, shrinking
simple graph function fitting, critical dimension determination
axes scale callibration
tip modelling, blind estimation, dilation and erosion

What's New in This Release:
New file import modules for PSIA and PSI HDF4 were added, BCR import supports files with UTF-16 headers now.
1D FFT filter was ported to 2.x and reenabled.
Immerse was reworked and it has a usable GUI now.
There were miscellaneous other improvements and bugfixes.