News Archive

08.09.2010: We are very excited to announce that our entry "Pre-Operative Planning of Brain Tumor Resections" has been awarded first prize in this year's IEEE Visualization Contest. The proposed system, which has been implemented based on the Voreen framework, integrates several multimodal 2D and 3D views in order to provide an interactive workflow for neurosurgical planning. Further information including a video is available on the publication webpage.

01.02.2010: Several smaller issues were fixed in this maintenance release (see the changelog for details). Special thanks to all the people who sent in feedback and bug reports!

There is a new example workspace in the workspace section that demonstrates the Flowreen flow visualization component of Voreen using 3D streamlines.

23.12.2009: We are very proud to announce the best Voreen release so far: Voreen 2.0! We have invested a lot of work in the past months to integrate several new features and to re-engineer some of the existing concepts. Among other things, we have added native support for multiple view applications by providing a multi canvas mechanism as well as supporting linking between properties. Furthermore, we have improved the volume handling, the serialization framework and we have added several new processors. Additionally, developing your own processors became more easy. Be sure to read the processor conversion guide in the FAQ section, in order to adapt your old processors. As usual, you can find a detailed list of all changes in the changelog. However, many of the new concepts are now also demonstrated in the new tutorial video section. So please feel free to test Voreen 2.0, and do not hesitate to contact us regarding your feedback! Merry Xmas and a happy new year!

P.S.: The christmas tree scene is based on the data set provided by Vienna University of Technology and has been rendered using an animated Voreen workspace scene, which you can download in the new workspace section.

20.11.2009: We have just released a new Voreen snapshot. This release does not contain any new features, but several bug fixes. Among others, we have improved bricking of large data sets, which now requires less memory, and we have integrated multiple Mac bug fixes. Additionally, we have enabled building Voreen with MinGW, which allows you to use Qt Creator for development. For a complete list of all bug fixes, please see the changelog. Thanks a lot to all users who have helped us to identify these bugs! As usual, installers for Windows and Mac are available in the download section. Of course, you can also update your working copy via our Subversion repository. Unfortunately, there are still some issues with some ATI graphics cards, where artifacts may appear, when enabling the "Camera inside the volume" feature.

Please also watch out for our upcoming Voreen 2.0 release. Within that release we will provide convenient development functionality for multi-view applications. Furthermore, we will provide processors allowing to do basic flow visualization and much more. On a technical level, we have eliminated the messaging system and simplified the implementation of the port concept. We plan and hope to be able to release Voreen 2.0 next month.

04.08.2009: The latest Voreen snapshot release adds support for visualizing volume data sets much larger than the available GPU memory, by subdividing the volume into bricks and switching their resolution based on the camera position. The size of the CT scan of a mouse shown on the right is 2 GB, but the bricking uses only 250 MB of GPU memory in this case. While the feature is still very much experimental, we managed to interactively visualize data sets with a size of up to 16 GB. See the changelog for how to use it, as well as for further improvements in this release.

Besides the source release and Windows installer, there is now also a Mac application bundle available in the download section. There is now a small getting started guide on how to use VoreenVE, you can find it in the 'Help' menu of the application.

06.07.2009: A new snapshot release of Voreen is available via our public SVN server, and also as a Windows installer version in the download section of our website. Again, the release contains multiple improvements as compared to the previous version of Voreen.

Some highlights are:

• Integrated application development by providing a development mode and a visualization mode. Within the development mode, a developer may edit networks and choose which properties should be editable in a final application. In the visualization mode the visualization can be tuned by editing the visible properties.
• Introduction of the workspace concept, where the status of the current application is serialized, including loaded network, data sets and property values.
• Improved transfer function editor to support 1D and 2D transfer functions.
• Integrated volume preprocessing processors. See volumeinversion.vnw for a basic example network.
• Added ZIP support for handling multiple volume data sets.
• Newly designed user interface.

As usual, we are keen on getting your feedback regarding possible improvements.

The source distribution of Voreen available though our public Subversion repository was updated with many feature improvements and bug fixes. Highlights include a new modular volume raycaster with multiple shading and gradient calculation modes, multiplanar slice rendering and clipping widgets. Please see the changelog for details.