Publication
Time-Dynamic Volume Visualization of Multimodally Tagged Body Cells
Peter Salz; Gerd Reis
In: Proc. 8th IASTED Int. Conf. Visualization, Imaging, and Image Processing. IASTED International Conference on Visualization Imaging and Image Processing (VIIP-2008), Eighth, September 1-3, Palma de Mallorca, Spain, Pages 137-142, ISBN 978-0-88986-759-8, ACTA Press, Calgary, 9/2008.
Abstract
Many researchers are interested in the visualization of
time-varying 3D biological cell data. This paper presents a
volume rendering software that visualizes the development
of the zebrafish's eye using a time-dependent scalar field.
In particular the software takes advantage of modern graphics
hardware's shader capacity. The paper focuses on the
design of an appropriate transfer function. Piecewise linear
transfer functions, opacity mapping using the gradient and
temporal coherence of the spatial data will be analyzed and
implemented. A combination of the gradient length and
the angle between the viewing direction and normal vector
defines an opacity map. The coefficient of variation of
the scalar data's temporal behavior is used as a lighting parameter
in per-pixel shading. By integrating surfaces in the
volume rendering software which were extracted from the
data, further insights into the structure of the eye membrane
can be gathered.