Results 261 to 270 of about 207,280 (295)

Improved Ray Casting of Procedural Distance Bounds

Journal of Graphics Tools, 2013
In this article, we present performance and quality enhancements for ray casting procedural distance bounds using sphere tracing: First, we propose a safe overrelaxation method for accelerating the tracing process and evaluate different variants of the algorithm.
Benjamin Keinert, Henry Schäfer, Johann Korndörfer, Urs Ganse, Marc Stamminger   +4 more
openaire   +1 more source

Ray casting using a roped BVH with CUDA

Proceedings of the 25th Spring Conference on Computer Graphics, 2009
In this paper, we present a real-time ray caster implemented on GPU using CUDA. It uses a BVH augmented with ropes that is traversed with ray packets to speed up performance. We present two algorithms making use of ray packets, packet-warp and packet-block, which set the packet size to a warp and a block, respectively.
Roberto Torres, Pedro J. Martín, Antonio Gavilanes   +2 more
openaire   +1 more source

Real-time ray casting of volumetric data

IEEE EUROCON 2015 - International Conference on Computer as a Tool (EUROCON), 2015
In this paper we present acceleration structures and techniques for real-time ray casting of large volumetric data sets, such as those obtained by CT or MRI scans. The techniques used include adaptive sampling and sparse casting. To improve rendering quality we use the regula falsi method and Monte-Carlo ambient occlusion estimation.
openaire   +1 more source

Curved Ray-Casting for Displacement Mapping in the GPU

2008
To achieve interactive speed, displacement mapping in the GPU is typically implemented in two steps: vertex shading/rasterization of the base surface and pixel shading. Pixel shading applies the height map relative to the image plane of the base surface, casts view rays to the height field through each pixel, finds the intersection point with the ...
Kyung-Gun Na, Moon-Ryul Jung
openaire   +1 more source

The Ray casting engine and Ray representatives

Proceedings of the first ACM symposium on Solid modeling foundations and CAD/CAM applications - SMA '91, 1991
John L. Ellis, Gershon Kedem, T. C. Lyerly, D. G. Thielman, Richard J. Marisa, Jai Menon 0002, Herbert B. Voelcker   +6 more
openaire   +1 more source

BackTracer: Improving ray-casting 3D target acquisition by backtracking the interaction history

International Journal of Human Computer Studies, 2023
Shengdong Zhao, Huagen Wan
exaly  

Accelerated ray-casting for curvilinear volumes

Proceedings Visualization '98 (Cat. No.98CB36276), 1998
Lichan Hong, Arie E. Kaufman
openaire   +1 more source

Displacement mapping with ray-casting in hardware

ACM SIGGRAPH 2004 Sketches on - SIGGRAPH '04, 2004
Keith Yerex, Martin Jägersand
openaire   +1 more source

Ellipsoidal ray casting algorithm

2022 2nd International Conference on Computer Graphics, Image and Virtualization (ICCGIV), 2022
Jiarun Wang, Fan Yang, Zhiqiang Li
openaire   +1 more source

An ameliorated deep dense convolutional neural network for accurate recognition of casting defects in X-ray images

Knowledge-Based Systems, 2021
Jianxin Zhou, Zhiwei Huang, Xiaoyuan Ji   +2 more
exaly