Some techniques for shading machine renderings of solids

Appel, Arthur

doi:10.1145/1468075.1468082

Cited by 292 publications

(163 citation statements)

References 10 publications

Supporting

Mentioning

156

Contrasting

Unclassified

Order By: Relevance

“…If the ray intersects with an object, the identity and distance to the object is returned. This can also be efficient, as the algorithms for ray-casting are well-known and well-optimized, in particular on graphics processing hardware [383,384]. The number, direction, and length of the rays can also be focused using scene culling [385], masking [179], proactive vision that estimates likely trajectories [178,181], or equivalents [386].…”

Section: Visionmentioning

confidence: 99%

Computational Streetscapes

Torrens

2016

Computation

View full text Add to dashboard Cite

Abstract:Streetscapes have presented a long-standing interest in many fields. Recently, there has been a resurgence of attention on streetscape issues, catalyzed in large part by computing. Because of computing, there is more understanding, vistas, data, and analysis of and on streetscape phenomena than ever before. This diversity of lenses trained on streetscapes permits us to address long-standing questions, such as how people use information while mobile, how interactions with people and things occur on streets, how we might safeguard crowds, how we can design services to assist pedestrians, and how we could better support special populations as they traverse cities. Amid each of these avenues of inquiry, computing is facilitating new ways of posing these questions, particularly by expanding the scope of what-if exploration that is possible. With assistance from computing, consideration of streetscapes now reaches across scales, from the neurological interactions that form among place cells in the brain up to informatics that afford real-time views of activity over whole urban spaces. For some streetscape phenomena, computing allows us to build realistic but synthetic facsimiles in computation, which can function as artificial laboratories for testing ideas. In this paper, I review the domain science for studying streetscapes from vantages in physics, urban studies, animation and the visual arts, psychology, biology, and behavioral geography. I also review the computational developments shaping streetscape science, with particular emphasis on modeling and simulation as informed by data acquisition and generation, data models, path-planning heuristics, artificial intelligence for navigation and way-finding, timing, synthetic vision, steering routines, kinematics, and geometrical treatment of collision detection and avoidance. I also discuss the implications that the advances in computing streetscapes might have on emerging developments in cyber-physical systems and new developments in urban computing and mobile computing.

show abstract

Section: Visionmentioning

confidence: 99%

Computational Streetscapes

Torrens

2016

Computation

View full text Add to dashboard Cite

show abstract

“…This work has led to many algorithms [24][25][26][27][28]17] based on Monte-Carlo methods [29]. Briefly, their goal is to compute the light intensity received using RT techniques.…”

Section: Bi-directional Path-tracing Algorithmmentioning

confidence: 99%

A New Ray-Tracing Based Wave Propagation Model Including Rough Surfaces Scattering

Cocheril¹,

Vauzelle²

2007

PIER

View full text Add to dashboard Cite

Abstract-This paper presents a complete ray-tracing based model which takes into account scattering from rough surfaces in indoor environments. The proposed model relies on a combination between computer graphics and radar techniques. The paths between the transmitter and the receiver are found thanks to a Bi-Directional Path-Tracing algorithm, and the scattering field after each interaction between the electromagnetic wave and the environment is computed according to the Kirchhoff Approximation. This propagation model is implemented as a plug-in in an existing full 3-D ray-tracing software. Thus, we compare the results of classical ray-tracing with those of our model to study the influence of the scattering phenomenon on the wave propagation in typical indoor environments.

show abstract

“…The technique of ray tracing was first suggested by Appel [4], and later was implemented by MAGI (Mathematics Application Group, Inc) [5] to solve the hidden surface removal problems. MAGI used a term "Geometric Ray Tracing" which is commonly referred to as ray tracing algorithm.…”

Section: The Previous Workmentioning

confidence: 99%

“…Consider Figure 10, as the vertices of the outermost bounding volume 4) are projected into the image plane, the projecting points '4) are obtained. From these projecting points, the researchers sort and find the active region boundary in terms of ActiveX_min, ActiveX_max, ActiveY_min, and ActiveY_max as depicted in Figure 10.…”

mentioning

confidence: 99%

Implementing ray tracing algorithm in parallel environment

Jadi¹

2000

View full text Add to dashboard Cite

'Mich a el A. Driscoll l.Cn Ray tracing is a very popular rendering algorithm in the field of computer graphics because it can generate highly-realistic images from three-dimensional models.Unfortunately, the computational cost is very expensive. To speed up the rendering process we present both static and dynamic scheduling (balancing) strategies for a multiprocessor system. Hence, the load balancing among the processors is the most important problem in parallel processing. The implementation of the algorithm is based on a modified octree structure.

show abstract

Some techniques for shading machine renderings of solids

Cited by 292 publications

References 10 publications

Computational Streetscapes

Computational Streetscapes

A New Ray-Tracing Based Wave Propagation Model Including Rough Surfaces Scattering

Implementing ray tracing algorithm in parallel environment

Contact Info

Product

Resources

About