Results 211 to 220 of about 33,936 (258)
Some of the next articles are maybe not open access.
ACM SIGGRAPH 2005 Courses on - SIGGRAPH '05, 2005
Ray tracing is a method to produce realistic images; it determines visible surfaces in an image at the pixel level (Appel, 1968; Kay & Greenberg, 1979; Whitted, 1980). Unlike the z-buffer and BSP tree, ray tracing operates pixel-by-pixel rather than primitive-by-primitive.
openaire +2 more sources
Ray tracing is a method to produce realistic images; it determines visible surfaces in an image at the pixel level (Appel, 1968; Kay & Greenberg, 1979; Whitted, 1980). Unlike the z-buffer and BSP tree, ray tracing operates pixel-by-pixel rather than primitive-by-primitive.
openaire +2 more sources
Computer Graphics Forum, 1993
AbstractWe are going to present a survey of techniques using temporal coherence in between frames to render animation sequences with ray tracing. A new method using temporal coherence in the ray space (lightpath of rays) is proposed. The goal of this technique is to factorize intersection and illumination calculations over the frames of the sequence ...
Hervé Maurel, Yves Duthen, René Caubet
openaire +1 more source
AbstractWe are going to present a survey of techniques using temporal coherence in between frames to render animation sequences with ray tracing. A new method using temporal coherence in the ray space (lightpath of rays) is proposed. The goal of this technique is to factorize intersection and illumination calculations over the frames of the sequence ...
Hervé Maurel, Yves Duthen, René Caubet
openaire +1 more source
The Visual Computer, 1993
In this paper, we describe a method to create an approximate ray-traced stereoscopic pair by transforming a fully raytraced left-eye view into an inferred right-eye view. Performance results from evaluating several random scenes, which indicate that the second view in a stereoscopic image can be computed with as little as 5% of the effort required to ...
Stephen J. Adelson, Larry F. Hodges
openaire +1 more source
In this paper, we describe a method to create an approximate ray-traced stereoscopic pair by transforming a fully raytraced left-eye view into an inferred right-eye view. Performance results from evaluating several random scenes, which indicate that the second view in a stereoscopic image can be computed with as little as 5% of the effort required to ...
Stephen J. Adelson, Larry F. Hodges
openaire +1 more source
Proceedings of the 1994 symposium on Volume visualization - VVS '94, 1994
This paper presents an eficient ray tracing method for scenes containing volumetric as well as geometric data. A global illumination equation is developed for this method, which is able to capture in a single image both realistic eaects and practical volume rendering.
Lisa M. Sobierajski, Arie E. Kaufman
openaire +1 more source
This paper presents an eficient ray tracing method for scenes containing volumetric as well as geometric data. A global illumination equation is developed for this method, which is able to capture in a single image both realistic eaects and practical volume rendering.
Lisa M. Sobierajski, Arie E. Kaufman
openaire +1 more source
Computer Graphics Forum, 1986
AbstractA multiprocessor algorithm for ray tracing is described. The performance of the algorithm is analysed for a cubic and square array of processors with only local communication between near neighbours. Theoretical expressions for the speedup of the system as a function of the number of processors are derived.
John G. Cleary +3 more
openaire +1 more source
AbstractA multiprocessor algorithm for ray tracing is described. The performance of the algorithm is analysed for a cubic and square array of processors with only local communication between near neighbours. Theoretical expressions for the speedup of the system as a function of the number of processors are derived.
John G. Cleary +3 more
openaire +1 more source
Ray tracings of the in between
ACM SIGGRAPH 2006 Sketches on - SIGGRAPH '06, 2006When brought into the anaglyphic format, the images leap out of the two-dimensional plane. Without the three-dimensional glasses, the images are a complex jumble of red and cyan lines on an abstracted surface. With the three-dimensional glasses, the scenes spring into an enveloping experience of vibratory depth.
openaire +1 more source
ACM SIGGRAPH Computer Graphics, 1989
The construction and refinement of a computer graphics scene is unacceptably slow when using ray tracing. We introduce a new technique to speed up the generation of successive ray traced images when the geometry of the scene remains constant and only the light source intensities and the surface properties need to be adjusted.
Carlo H. Séquin, E. K. Smyrl
openaire +1 more source
The construction and refinement of a computer graphics scene is unacceptably slow when using ray tracing. We introduce a new technique to speed up the generation of successive ray traced images when the geometry of the scene remains constant and only the light source intensities and the surface properties need to be adjusted.
Carlo H. Séquin, E. K. Smyrl
openaire +1 more source
Communications of the ACM, 2013
The NVIDIA® OptiX™ ray tracing engine is a programmable system designed for NVIDIA GPUs and other highly parallel architectures. The OptiX engine builds on the key observation that most ray tracing algorithms can be implemented using a small set of programmable operations.
Steven G. Parker +11 more
openaire +1 more source
The NVIDIA® OptiX™ ray tracing engine is a programmable system designed for NVIDIA GPUs and other highly parallel architectures. The OptiX engine builds on the key observation that most ray tracing algorithms can be implemented using a small set of programmable operations.
Steven G. Parker +11 more
openaire +1 more source
1991
After a brief recall of the basic principles of ray-tracing, the traditional and distributed approaches will be presented with the related illumination models. This will include an introduction to relevant topics such as photometry and optics, Monte-Carlo integration, stochastic sampling and a discussion on implementation issues.
Christian Bouville, Kadi Bouatouch
openaire +1 more source
After a brief recall of the basic principles of ray-tracing, the traditional and distributed approaches will be presented with the related illumination models. This will include an introduction to relevant topics such as photometry and optics, Monte-Carlo integration, stochastic sampling and a discussion on implementation issues.
Christian Bouville, Kadi Bouatouch
openaire +1 more source
Proceedings of the Physical Society. Section B, 1952
An iterative ray-tracing method described by T Smith is shown to give a divergent sequence of approximations in certain cases; when it converges it has only first order convergence according to Hartree's classification of iterative processes An iterative method which always gives second order convergence is described and the significance of the ...
openaire +2 more sources
An iterative ray-tracing method described by T Smith is shown to give a divergent sequence of approximations in certain cases; when it converges it has only first order convergence according to Hartree's classification of iterative processes An iterative method which always gives second order convergence is described and the significance of the ...
openaire +2 more sources