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ReleaseNotes

Release Notes

Here, we collect all the recent release notes for OpenWalnut.

After OpenWalnut 1.2.5

Please see Roadmap.

OpenWalnut 1.2.5

This mainly is a bug fix release. We fixed a lot of minor and major bugs and have improved a lot of the base functionality.

New Features and Improvements

  • Endless bug fixes and minor speed improvements
  • Fully customizable GUI, using Dock Windows
  • Updated and extended documentation and tutorials
  • Simplified OpenWalnut configuration
    • Now done using the GUI, walnut.cfg not used anymore
  • Cleaned up and unified CMake configuration
  • Added automation mechanism for release management
  • Debian Packages! Available in http://neuro.debian.net

Known Issues

  • We still have issues with Mesa-driven graphics boards. The newest Mesa release does not crash anymore but is very slow with OpenWalnut, as we intensively use GLSL shaders.
  • Minor GUI issues on MacOSX.
  • Visual Studio not supported for this release anymore.
  • Low frame-rate if VSync is active on the system. Is a problem with OSG. We work on this for the next releases.

OpenWalnut 1.2

New Features and Improvements

  • Handling of multiple Navigation Slices and Fiber Display modules now possible
  • Button to reset main view
  • Framework is generally more stable now
  • Many non-visible improvements, e.g. for speed.

Fixed Bugs

  • Removing data modules now also frees the corresponding memory.
  • Removed flickering of GUI

Known Issues

  • Crashes with graphic boards from IntelGMA
  • Some problems with the GUI on MacOS (sometimes jumping windows and toolbar visibility)
  • OpenWalnut does not completely adhere to the NIfTI standard concerning the dimensions yet (see http://nifti.nimh.nih.gov/dfwg/presentations/nifti-1-rationale). The interpretation of dim[4] and dim[5] is kind of switched. This comes from the fact that we found much data out there with the configuration we now implemented.
  • If multiThreadedViewers = yes is set in the walnut.cfg OpenWalnut becomes unstable if dealing with osgText (e.g. HUD, Coordinate System, EEG stuff). However, default is multiThreadedViewers = nowhich is safe.
  • A small memory leak regarding the graphics part. Especially visible with Isosurface and TeemGlyphs (not meaning that these are the cause).

Supported Modules

  1. Arbitrary Plane
  2. Coordinate System
  3. Image Extractor
  4. Paint Texture
  5. Arbitrary Rois
  6. Bounding Box
  7. Distance Map Isosurface
  8. Gauss Filtering
  9. HUD
  10. Isosurface
  11. Isosurface Raytracer
  12. LIC
  13. Read Mesh
  14. Voxelizer
  15. Superquadric Glyphs
  16. Triangle Mesh Renderer
  17. Vector Plot
  18. Write NIfTI
  19. Fiber Display
  20. Read Spherical Harmonics
  21. [wiki:"Module/Navigation Slices" Navigation Slices]
  22. Deterministic Tract Clustering using Gaussian Processes (needs libEigen)
  23. Deterministic Tract to Gaussian Process Converter (needs libEigen)
  24. Cluster Param Display
  25. Write Tracts
  26. Fiber Resampling
  27. Teem Glyphs

OpenWalnut 1.1

New Features and Improvements

  • Selectable preset views (left, right, anterior, posterior, superior, inferior)
  • Renamed "Dataset Browser" to "Control Panel" in GUI.
  • Deactivating a slice in the main view does not deactivate it in the navigation views anymore.
  • "Paint Texture" module to allow marking areas of data set.
  • "Isosurface Raytracer" module has phong shading option now.
  • Real MacOS support.
  • Dynamic loading of modules
  • Extended customization possibilities of GUI
  • Added GUI access to connections between modules for advanced users
  • Using transformation matrices for data sets is optional now (see http://nifti.nimh.nih.gov/nifti-1/documentation/nifti1fields/nifti1fields\_pages/qsform.html)
  • ... and more!

Fixed Bugs

  • Vector plot can handle transformed data sets now
  • Fibers have a bounding box now. This fixes a bug that clipped large parts of the fibers (unwanted).
  • Isosurface does not changed the isovalue with changing data.
  • ... and many more!

Known Issues

The OpenWalnut community is aware that the following issues still exist in 1.1:

  • Isosurface Raytracer does not handle transformed data sets.
  • Deleting datasets (data modules) from the module tree does not free their memory yet

Supported Modules

  • Arbitrary Plane
  • Coordinate System
  • Image Extractor
  • Paint Texture
  • Arbitrary Rois
  • Bounding Box
  • Distance Map Isosurface
  • Gauss Filtering
  • HUD
  • Isosurface
  • Isosurface Raytracer
  • LIC
  • Mesh Reader
  • Voxelizer
  • Superquadric Glyphs
  • Triangle Mesh Renderer
  • Vector Plot
  • Write NIfTI

OpenWalnut 1.0

This is the first release of OpenWalnut.

Supported Modules

  • Arbitrary Rois
  • Bounding Box
  • Distance Map Isosurface
  • Gauss Filtering
  • HUD
  • Isosurface
  • Isosurface Raytracer (previously called Direct Volume Rendering)
  • LIC
  • Mesh Reader
  • Voxelizer
  • Superquadric Glyphs
  • Triangle Mesh Renderer
  • Vector Plot
  • Write NIfTI