Pa tri c L ju n g E ffic ie n t M et h o d s f o r D ire ct V o lu m e R en d er in g o f L ar g e D at a Se ts N o rrk ö p in g 2 0 0 6
Doctoral Thesis in Scientific Visualization
Linköping Studies in Science and Technology. Dissertations, No. 1043
Efficient Methods for Direct Volume Rendering of Large Data Sets
© 2006 Patric Ljung
plg@itn.liu.se
Division for Visual Information Technology and Applications, Norrköping Visualization and Interaction Studio
Department of Science and Technology
Linköping University, SE-601 74 Norrköping, Sweden
ISBN 91-85523-05-4 / ISSN 0345-7524
Printed in Sweden by LTAB, Linköping 2006
Department of Science and Technology Norrköping 2006
Division of Visual Information Technology and Applications
Patric Ljung
Efficient Methods for
Direct Volume Rendering of
Large Data Sets
Cover images
These images are rendered at a data reduction ratio of 6:1, 80:1 and 315:1, from left to right. The volume data is represented using a flat multiresolution blocking scheme that supports a fine-grained granularity independent of level-of-detail selections. The specific selection is achieved by using a transfer function based significance measure for each block.
The renderer employs a single-pass raycasting technique implemented as shader programs on programmable commodity graphics hardware. Rendering acceleration is accomplished by adaptive sampling of the volume using the level-of-detail information. A direct multiresolution interblock interpolation scheme is used to provide continuous interpolation across block boundaries with arbitrary resolution differences.
