Author pages are created from data sourced from our academic publisher partnerships and public sources.
Share This Author
GPU Cluster for High Performance Computing
- Zhe Fan, Feng Qiu, A. Kaufman, S. Yoakum-Stover
- Computer ScienceProceedings of the ACM/IEEE SC2004 Conference
- 6 November 2004
A parallel flow simulation using the lattice Boltzmann model (LBM) on a GPU cluster and the dispersion of airborne contaminants in the Times Square area of New York City are simulated.
Automatic centerline extraction for virtual colonoscopy
- M. Wan, Zhengrong Liang, Qi Ke, Lichan Hong, I. Bitter, A. Kaufman
- Medicine, Computer ScienceIEEE Transactions on Medical Imaging
- 1 December 2002
This paper provides an efficient automatic means to extract the centerline and its associated branches (caused by a forceful touching of colon and small bowel or a deep fold in twisted colon lumen) and discusses its applications on fly-through path planning and endoscopic simulation.
Fundamentals of Surface Voxelization
- D. Cohen-Or, A. Kaufman
- Computer Science, MathematicsCVGIP Graph. Model. Image Process.
- 31 October 1995
This paper presents the theoretical discrete geometry framework for the voxelization of surfaces, and the concepts of separating, coverage, and tunnel-freeness are introduced.
Volume graphics, which employs a volume buffer of voxels for 3D scene representation, is discussed and the problems associated with the volume buffer representation (such as discreteness, memory size, processing time, and loss of geometric representation) are discussed.
- A. Kaufman
- Computer ScienceCSUR
Volume visualization encompasses an array of techniques for peering inside the dataset and for interactively extracting meaningful information from it using transformations, cuts, segmentation, translucency, measurements, and the like.
Alias-Free Voxelization of Geometric Objects
The V-model with a Gaussian surface density profile combined with tricubic interpolation and Gabor derivative reconstruction outperforms the previously published technique with a linear density profile and enables higher fidelity of images rendered from volume data due to increased sharpness of edges and thinner surface patches.
A modeling technique based on the metaphor of interactively sculpting complex 3D objects from a solid material, such as a block of wood or marble, achieves real-time interaction by reducing the complex operations between the 3D tool volume and the3D model down to primitive voxel-by-voxel operations.
3D Surface Reconstruction from Endoscopic Videos
3D reconstruction of the interior surface of the organ will be very helpful as it turns the stream of 2D images into a meaningful 3D model and provides more details about the patient’s organ including a coordinate system and could be saved for later uses.
Virtual voyage: interactive navigation in the human colon
This work presents an interactive virtual colonoscopy method, which uses a physicallybased camera control model and a hardware-assisted visibility algorithm that culls invisible regions based on their visibility through a chain of portals, thus providing interactive rendering speed.
Penalized-Distance Volumetric Skeleton Algorithm
A refined general definition of a skeleton is introduced that is based on a penalized distance function and that cannot create any of the degenerate cases of the earlier CEASAR and TEASAR algorithms.