Visibility-ordering meshed polyhedra
ACM Transactions on Graphics (TOG)
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
IEEE Transactions on Pattern Analysis and Machine Intelligence
ZSWEEP: an efficient and exact projection algorithm for unstructured volume rendering
VVS '00 Proceedings of the 2000 IEEE symposium on Volume visualization
Hardware-accelerated volume and isosurface rendering based on cell-projection
Proceedings of the conference on Visualization '00
Hardware-based view-independent cell projection
VVS '02 Proceedings of the 2002 IEEE symposium on Volume visualization and graphics
Iterative x-ray/ct registration using accelerated volume rendering
Iterative x-ray/ct registration using accelerated volume rendering
Projecting Tetrahedra without Rendering Artifacts
VIS '04 Proceedings of the conference on Visualization '04
A Fast High Accuracy Volume Renderer for Unstructured Data
VV '04 Proceedings of the 2004 IEEE Symposium on Volume Visualization and Graphics
Hardware-Assisted Visibility Sorting for Unstructured Volume Rendering
IEEE Transactions on Visualization and Computer Graphics
Deformable 2D-3D registration of the pelvis with a limited field of view, using shape statistics
MICCAI'07 Proceedings of the 10th international conference on Medical image computing and computer-assisted intervention
IPCAI'10 Proceedings of the First international conference on Information processing in computer-assisted interventions
Hardware-assisted projected tetrahedra
EuroVis'10 Proceedings of the 12th Eurographics / IEEE - VGTC conference on Visualization
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This paper presents a novel method for volume rendering of unstructured grids. Previously [CHECK END OF SENTENCE], we introduced an algorithm for perspective-correct interpolation of barycentric coordinates and computing polynomial attenuation integrals for a projected tetrahedron using graphics hardware. Here, we enhance the algorithm by providing a simple and efficient method to compute the projected shape (silhouette) and tessellation of a tetrahedron, in perspective and orthographic projection models. Our tessellation algorithm is published here for the first time. Compared with works of other groups on rendering unstructured grids, the main contributions of this work are: 1) A new algorithm for finding the silhouette of a projected tetrahedron. 2) A method for interpolating barycentric coordinates and thickness on the faces of the tetrahedron. 3) Visualizing higher-order attenuation functions using GPU without preintegration. 4) Capability of applying shape deformations to a rendered tetrahedral mesh without significant performance loss. Our visualization model is independent of depth-sorting of the cells. We present imaging and timing results of our implementation, and an application in time-critical "2D-3D” deformable registration of anatomical models. We discuss the impact of using higher-order functions on quality and performance.