Visual Information Laboratory, Department of Information Engineering, The Chinese University of Hong Kong
V-Explorer - Interactive Visualization and Analysis of 3D Images
Image Volume Rocking
Volume rendering is essentially a dimension-reduced information-lost transformation, from 3D to 2D. A 3D structure is obtained from a 2D rendered-image by the mental reconstruction of spatial information. A small number of 2D projections can not represent volume data adequately, simply because of the quantity of information involved. Generally, the ability of the display to provide 3D information for the viewer improves as users interact to choose the views they need and display them sequentially over time.
In the following sections, a fast algorithm [Hongzheng:1995] is introduced for rendering an animation of a `rocking' or `rotating' volume image based on the shear-warp approach in our 64x128 processors MPP machine.