IVS
Interactive Volume Segmentation

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Interactive Volume Segmentation IVS is a medical image analysis tool written by Felipe Bergo and Alexandre Falcão at the Institute of Computing, Unicamp.

IVS is provided free of charge for use on Linux-based PCs (freeware, source code not included). IVS reads our own SCN 3D format, as well as 2D PGM images and medical images in Analyze format. DICOM images can be converted to SCN with the dicom2scn provided with IVS. IVS can perform several 3D preprocessing steps, such as interpolation, clipping, gradient computation and morphological operations. Semi-automatic volume segmentation is possible through the DIFT, as described in "Interactive Volume Segmentation with Differential Image Foresting Transforms", IEEE Transactions on Medical Imaging, Sep 2004, 23 (9), pp. 1101-1109.

Current version, as of October 2010, is 2.10. The IVS quick guide was written for version 1.11. While the interface changed a bit, the operations required for segmentation are still the same.

dicom2scn The IVS package includes some command line tools for conversion between the DICOM, Analyze and SCN formats (dicom2scn, ana2scn, scn2ana and scntool). Pre-compiled binaries for these tools are included in the IVS packages below, and their source code is also provided (under the GNU General Public License) in the dicom2scn source package. The current version of dicom2scn is 2010.2.

The manual pages of the dicom2scn tools can be viewed online:

• dicom2scn(1)
• ana2scn(1)
• scn2ana(1)
• scntool(1)
• scn(5)

Downloads

Version 2.10 (October 2010)

• ivs-2.10-fedora12-x86_64.tar.gz - binary IVS distribution for the x86_64 / AMD64 architecture, compiled on Fedora 12 (422 kB).
• ivs-2.10-centos5-x86_64.tar.gz - binary IVS distribution for the x86_64 / AMD64 architecture, compiled on CentOS 5 (RHEL 5 equivalent) (385 kB).
• ivs-2.10-centos5-i686.tar.gz - binary IVS distribution for the i686 (32-bit) architecture, compiled on CentOS 5 (RHEL 5 equivalent) (355 kB).
• dicom2scn-2010.2.tar.gz - source code package for dicom2scn and associated conversion tools (33 kB).

Changes since 2.9:

• IVS now properly reads volume files even when the system locale is set to something that does not have dots as decimal separators.

Changes since 2.8:

• Minor bugfix in dicom2scn's -d option.
• Documentation updates.

Version 2.8 (June 2010)

• ivs-2.8-fedora12-x86_64.tar.gz - binary IVS distribution for the x86_64 / AMD64 architecture, compiled on Fedora 12 (419 kB).
• ivs-2.8-centos5-x86_64.tar.gz - binary IVS distribution for the x86_64 / AMD64 architecture, compiled on CentOS 5 (RHEL 5 equivalent) (384 kB).
• ivs-2.8-centos5-i686.tar.gz - binary IVS distribution for the i686 (32-bit) architecture, compiled on CentOS 5 (RHEL 5 equivalent) (354 kB).

Major changes since 2.6:

• IVS now links against GTK 2 instead of GTK 1.2 (which is now vanishing for modern Linux distributions).
• Slice homogenization and SSR filters have been removed from the interface (these were experimental filters with irregular results, and reducing the number of filters makes IVS easier on small notebook screens).
• dicom2scn supports multi-frame DICOM files (3D volume in a single file) and has some new options for dealing with negative intensities (particular applications such as CT and T2 relaxometry may require these).
• Some bugs in the file manager tab have been fixed (mostly non-working clicks and bad scrolling).

Version 2.6 (October 2005)

ivs-2.6-x86_32.tar.gz - binary IVS distribution for the x86 (i586) architecture (329 kB).
• ivs-2.6-x86_64.tar.gz - binary IVS distribution for the x86_64 / AMD64 architecture (364 kB).
• ivs-qg.pdf - IVS Quick Guide (2 MB)
• head-mri-0001.scn.gz - Sample Volume (6.5 MB)