Projects / SImg


SImg is a software for astronomical image processing. It contains a tool for visualization of highly dynamic images. The package consists of a library and applications which use it. Some of the features are deconvolution (various methods), Video4Linux support, PSF computation, approximation by linear combination of images and polynoms, various color transforms, automatic shifting of image sets (for addition and color composition), and more.

Operating Systems

Recent releases

  •  13 Oct 2005 09:57

    Release Notes: Support for Firewire cameras, support of various raw data formats, support for Bayer color pattern images, and various additional features, improvements, and bugfixes.

    •  12 Nov 2002 22:13

      Release Notes: The most important new features are multi time exposures (to increase the dynamic by combining different exposure times, e.g. to avoid blooming), computation of read out noise and AD resolution, and improved removal of interferences.

      •  13 May 2002 14:42

        Release Notes: The FFT routines were improved, and are now up to 150% faster than the old ones.

        •  13 Apr 2002 08:16

          Release Notes: This version contains a visualisation tool. The PSF computation has been improved, and approximation by a linear combination of images and polynoms is possible now. Support for the SBIG3 file format was added.

          •  25 Jun 2001 21:16

            No changes have been submitted for this release.

            Recent comments

            11 Jan 2003 17:12 sz711

            Re: root
            Fixed now, it was a problem with the SysV IPC permissions. (Use the latest CVS version from

            11 Jan 2003 12:54 mwieser

            You need to be root, otherwise simg produces error


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