@inproceedings{ZoecklerStallingHege1996, author = {Z{\"o}ckler, Malte and Stalling, Detlev and Hege, Hans-Christian}, title = {Parallel Line Integral Convolution}, series = {Proc. First Eurographics Workshop on Parallel Graphics and Visualization}, booktitle = {Proc. First Eurographics Workshop on Parallel Graphics and Visualization}, address = {Bristol, U.K.}, doi = {10.1016/S0167-8191(97)00039-2}, pages = {111 -- 128}, year = {1996}, language = {en} } @inproceedings{ZoecklerStallingHege1996, author = {Z{\"o}ckler, Malte and Stalling, Detlev and Hege, Hans-Christian}, title = {Interactive Visualization of 3D-Vector Fields Using Illuminated Streamlines}, series = {Proc. IEEE Visualization 1996}, booktitle = {Proc. IEEE Visualization 1996}, address = {San Fransisco}, doi = {10.1109/VISUAL.1996.567777}, pages = {107 -- 113}, year = {1996}, language = {en} } @article{ZoecklerStallingHege2000, author = {Z{\"o}ckler, Malte and Stalling, Detlev and Hege, Hans-Christian}, title = {Fast and Intuitive Generation of Geometric Shape Transitions}, series = {The Visual Computer}, volume = {16(5)}, journal = {The Visual Computer}, doi = {10.1007/PL00013396}, pages = {241 -- 253}, year = {2000}, language = {en} } @misc{ZoecklerStallingHege, author = {Z{\"o}ckler, Malte and Stalling, Detlev and Hege, Hans-Christian}, title = {Fast and Intuitive Generation of Geometric Shape Transitions}, url = {http://nbn-resolving.de/urn:nbn:de:0297-zib-4219}, number = {SC-99-33}, abstract = {We describe a novel method for continuously transforming two triangulated models of arbitrary topology into each other. Equal global topology for both objects is assumed, extensions for genus changes during metamorphosis are provided. The proposed method addresses the major challenge in 3D metamorphosis, namely specifying the morphing process intuitively, with minimal user interaction and sufficient detail. Corresponding regions and point features are interactively identified. These regions are parametrized automatically and consistently, providing a basis for smooth interpolation. Utilizing suitable 3D interaction techniques a simple and intuitive control over the whole morphing process is offered.}, language = {en} } @article{ZoecklerStalling2002, author = {Z{\"o}ckler, Malte and Stalling, Detlev}, title = {Using confocal microscopy and advanced 3-d visualization to investigate the Drosophila brain}, series = {Scientific Computing \& Instrumentation}, journal = {Scientific Computing \& Instrumentation}, year = {2002}, language = {en} } @misc{ZoecklerReinBrandtetal., author = {Z{\"o}ckler, Malte and Rein, Karlheinz and Brandt, Robert and Stalling, Detlev and Hege, Hans-Christian}, title = {Creating Virtual Insect Brains with Amira}, url = {http://nbn-resolving.de/urn:nbn:de:0297-zib-6589}, number = {01-32}, abstract = {By combining techniques of preparation, histology, confocal microscopy, data visualization and data processing, we have created and recently published a standard brain model for drosophila and honey bee brains. This report describes the algorithms and implementation of the corresponding software modules. At the same time it serves as a user's guide for scientist who want to reproduce the results for differerent species or mutants.}, language = {en} } @misc{StallingZoecklerSanderetal., author = {Stalling, Detlev and Z{\"o}ckler, Malte and Sander, Oliver and Hege, Hans-Christian}, title = {Weighted Labels for 3D Image Segmentation}, url = {http://nbn-resolving.de/urn:nbn:de:0297-zib-3828}, number = {SC-98-39}, abstract = {Segmentation tools in medical imaging are either based on editing geometric curves or on the assignment of region labels to image voxels. While the first approach is well suited to describe smooth contours at subvoxel accuracy, the second approach is conceptually more simple and guarantees a unique classification of image areas. However, contours extracted from labeled images typically exhibit strong staircase artifacts and are not well suited to represent smooth tissue boundaries. In this paper we describe how this drawback can be circumvented by supplementing region labels with additional weights. We integrated our approach into an interactive segmentation system providing a well-defined set of manual and semi-automatic editing tools. All tools update both region labels as well as the corresponding weights simultaneously, thus allowing one to define segmentation results at high resolution. We applied our techniques to generate 3D polygonal models of anatomical structures.}, language = {en} } @misc{StallingZoecklerHege, author = {Stalling, Detlev and Z{\"o}ckler, Malte and Hege, Hans-Christian}, title = {Fast Display of Illuminated Field Lines}, url = {http://nbn-resolving.de/urn:nbn:de:0297-zib-2686}, number = {SC-96-58}, abstract = {A new technique for interactive vector field visualization using large numbers of properly illuminated field lines is presented. Taking into account ambient, diffuse, and specular reflection terms as well as transparency and depth cueing, we employ a realistic shading model which significantly increases quality and realism of the resulting images. While many graphics workstations offer hardware support for illuminating surface primitives, usually no means for an accurate shading of line primitives are provided. However, we show that proper illumination of lines can be implemented by exploiting the texture mapping capabilities of modern graphics hardware. In this way high rendering performance with interactive frame rates can be achieved. We apply the technique to render large numbers of integral curves of a vector field. The impression of the resulting images can be further improved by a number of visual enhancements, like transparency and depth-cueing. We also describe methods for controlling the distribution of field lines in space. These methods enable us to use illuminated field lines for interactive exploration of vector fields.}, language = {en} } @inproceedings{StallingZoecklerHege1998, author = {Stalling, Detlev and Z{\"o}ckler, Malte and Hege, Hans-Christian}, title = {Segmentation of 3D Medical Images with Subvoxel Accuracy}, series = {Proc. CARS '98 Computer Assisted Radiology and Surgery}, booktitle = {Proc. CARS '98 Computer Assisted Radiology and Surgery}, address = {Tokyo}, pages = {137 -- 142}, year = {1998}, language = {en} } @article{StallingZoecklerHege1997, author = {Stalling, Detlev and Z{\"o}ckler, Malte and Hege, Hans-Christian}, title = {Fast Display of Illuminated Field Lines}, series = {IEEE Transactions on Visualization and Computer Graphics}, volume = {3}, journal = {IEEE Transactions on Visualization and Computer Graphics}, number = {2}, doi = {10.1109/2945.597795}, pages = {118 -- 128}, year = {1997}, language = {en} }