Fast techniques for direct volume rendering over curvilinear grids (common to computational fluid dynamics and finite element analysis) are developed. Three new projection methods that use polygon-rendering hardware f...
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Fast techniques for direct volume rendering over curvilinear grids (common to computational fluid dynamics and finite element analysis) are developed. Three new projection methods that use polygon-rendering hardware f...
详细信息
ISBN:
(纸本)9780818639401
Fast techniques for direct volume rendering over curvilinear grids (common to computational fluid dynamics and finite element analysis) are developed. Three new projection methods that use polygon-rendering hardware for speed are presented and compared with each other and with previous methods for tetrahedral grids and rectilinear grids. A simplified algorithm for visibility ordering, based on a combination of breadth-first and depth-first searches, is described. A new multi-pass blending method is described that reduces visual artifacts that are introduced by linear interpolation in hardware where exponential interpolation is needed. visualization tools that permit rapid data banding and cycling through transfer functions, as well as region restriction, are described.< >
The proceedings contain 299 papers. The special focus in this conference is on Space Programs and Technologies. The topics include: Spacelab life sciences 1 results;extended duration orbiter - meeting the challenge Da...
The proceedings contain 299 papers. The special focus in this conference is on Space Programs and Technologies. The topics include: Spacelab life sciences 1 results;extended duration orbiter - meeting the challenge David saucier;day-of-launch I-load updates for the space shuttle;national launch system comparative economic analysis;system cost modeling - an integrated approach;cost-optimized launch vehicle design;evolutionary lunar systems for human exploration;impact of restructuring on space station freedom assembly sequence;space station freedom pre-integrated truss configuration;a visual display aid for planning rover traversals;the space test program;science data processing in the mission to planet earth era;defining and satisfying the computing requirements of the EOS scientific computing facilities at NASA/MSFC and the rationale for fundamental research in space biology.
A system is presented which utilizes vision and touch for object apprehension. The author defines apprehension as the determination of the properties of an object and the relationships among these properties. This is ...
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ISBN:
(纸本)0818607874
A system is presented which utilizes vision and touch for object apprehension. The author defines apprehension as the determination of the properties of an object and the relationships among these properties. This is in contrast to recognition, which goes a step further in the determination process by attaching a label to the object as a whole. Vision is used to obtain initial information about the object, including position, two dimensional segmentation, and three dimensional edge analysis. This data is then used to guide an active tactile system in its exploration of the object. The visual and tactile data are combined into a spatial polyhedral representation designed to allow further exploration of the object, as well as high-level reasoning about the object and its components.
In this paper we present a system which utilizes vision and touch for object apprehension. We define apprehension as the determination of the properties of an object and the relationships among these properties. This ...
详细信息
In this paper we present a system which utilizes vision and touch for object apprehension. We define apprehension as the determination of the properties of an object and the relationships among these properties. This is in contrast to recognition, which goes a step further in the determination process by attaching a label to the object as a whole. Vision is used to to obtain initial information about the object, including position, two dimensional segmentation, and three dimensional edge analysis. This data is then used to guide an active tactile system in its exploration of the object. The visual and tactile data are combined into a spatial polyhedral representation designed to allow further exploration of the object, as well as high level reasoning about the object and its components.
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