Research on the Accelerated Ray Tracing for Volume-Rendering Based on GPU

2010 ◽  
Author(s):  
Zhanfang Chen ◽  
Yu Miao ◽  
Weili Shi ◽  
Tao Ren ◽  
Guoyu Zhang
Keyword(s):  
Ray Tracing ◽  
Volume Rendering

Rendering and Comparing Research of 3D Julia Sets Based on CPU/GPU

2012 ◽  
Vol 542-543 ◽  
pp. 1434-1437
Author(s):  
Xiao Ping Xiao ◽  
Zi Sheng Li ◽  
Wei Gong
Keyword(s):  
Ray Tracing ◽  
Volume Rendering ◽  
Julia Sets ◽  
Time Algorithm ◽  
High Quality

Aiming at the problem that rendering 3D Julia sets on CPU is slowly, a method of rendering 3D Julia sets on GPU is presented in this paper. After introducing the advantages of GPU and the operations of quaternion, the generating process of 3D Julia sets is discussed in detail. Ray tracing volume rendering algorithm is applied to obtain high quality 3D Julia sets, and escaping time algorithm is used to generate the discreet data of Julia sets, of which normal is estimated according to the original of ray and accelerated by using unbounding sphere algorithm, and the graphics examples are given to illustrate this algorithm. Finally, the factors of affecting rendering speed and refined effect are summarized. The results show that the speed of 3D Julia sets rendering on GPU is much faster than CPU, and the interactivity of rendering process is also enhanced.

scholarly journals Augmenting Image Warping-Based Remote Volume Rendering with Ray Tracing

2020 ◽  
Author(s):  
Stefan Zellmann
Keyword(s):  
Ray Tracing ◽  
Volume Rendering ◽  
Image Warping ◽  
Depth Image ◽  
Data Sets ◽  
Ray Casting ◽  
Remote Rendering ◽  
Camera Position ◽  
Z Value ◽  
Depth Buffer

<div><div><div><p>We propose an image warping-based remote rendering technique for volumes that decouples the rendering and display phases. Our work builds on prior work that samples the volume on the client using ray casting and reconstructs a z-value based on some heuristic. The color and depth buffer are then sent to the client that reuses this depth image as a stand-in for subsequent frames by warping it according to the current camera position until new data was received from the server. We augment that method by implementing the client renderer using ray tracing. By representing the pixel contributions as spheres, this allows us to effectively vary their footprint based on the distance to the viewer, which we find to give better results than point-based rasterization when applied to volumetric data sets.</p></div></div></div>

Sparse Volume Rendering using Hardware Ray Tracing and Block Walking

2021 ◽  
Author(s):  
Mehmet Oguz Derin ◽  
Takahiro Harada ◽  
Yusuke Takeda ◽  
Yasuhiro Iba
Keyword(s):  
Ray Tracing ◽  
Volume Rendering

scholarly journals Augmenting Image Warping-Based Remote Volume Rendering with Ray Tracing

2020 ◽  
Author(s):  
Stefan Zellmann
Keyword(s):  
Ray Tracing ◽  
Volume Rendering ◽  
Image Warping ◽  
Depth Image ◽  
Data Sets ◽  
Ray Casting ◽  
Remote Rendering ◽  
Camera Position ◽  
Z Value ◽  
Depth Buffer

<div><div><div><p>We propose an image warping-based remote rendering technique for volumes that decouples the rendering and display phases. Our work builds on prior work that samples the volume on the client using ray casting and reconstructs a z-value based on some heuristic. The color and depth buffer are then sent to the client that reuses this depth image as a stand-in for subsequent frames by warping it according to the current camera position until new data was received from the server. We augment that method by implementing the client renderer using ray tracing. By representing the pixel contributions as spheres, this allows us to effectively vary their footprint based on the distance to the viewer, which we find to give better results than point-based rasterization when applied to volumetric data sets.</p></div></div></div>

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