In this paper, we present a new deformable volume rendering algorithm. The volume deformation is modeled by a landmark-based volume morphing method uisng Hardy's scattered data interpolation. The algorithm is able to directly render the deformed volume without going through the expensive volume construction process. Piecewise linear approximation of the deformation function by adaptive space su...

The differential volume rendering method is a ray casting based method for time-varying-volume-data. In the differential volume rendering method, the changed fractions of volume data between consecutive time steps are extracted to form differential files. Based on the differential files, only the changed pixels, instead of all the pixels in the image, are updated by casting new rays at the posi...

Precise localization of the third molars in relation to the inferior alveolar nerve canal is critical from a clinical point of view and strongly affects the surgical treatment outcome. Recently, by using three-dimensional modeling software, the relationship of third molar root apices and inferior alveolar nerve canal can be better understood. In this study, the spatial relationship of two surgi...

Topological volume skeletonization is a novel approach for automating transfer function design in visualization by extracting the topological structure of a volume dataset. The skeletonization process yields a graph called a volume skeleton tree, which consists of volumetric critical points and their connectivity. The resultant graph provides critical field values whose color and opacity are ac...

In this paper, we first introduce a 3D morphing method for landmark-based volume deformation, using various scattered data interpolation schemes. Qualitative and speed comparisons are also made for different interpolation schemes. To efficiently render the volume morphing process, a new deformable volume rendering algorithm is presented. The algorithm renders the deformed volume directly withou...