scholarly journals Correction to: Parallel optimization of the ray-tracing algorithm based on the HPM model

2021 ◽  
Author(s):  
Wang Jun-Feng ◽  
Ding Gang-Yi ◽  
Wang Yi-Ou ◽  
Li Yu-Gang ◽  
Zhang Fu-Quan
Keyword(s):  
Ray Tracing ◽  
Parallel Optimization ◽  
Tracing Algorithm

Parallel optimization of the ray-tracing algorithm based on the HPM model

2021 ◽  
Author(s):  
Wang Jun-Feng ◽  
Ding Gang-Yi ◽  
Wang Yi-Ou ◽  
Li Yu-Gang ◽  
Zhang Fu-Quan
Keyword(s):  
Ray Tracing ◽  
Effective Means ◽  
Parallel Architecture ◽  
Organization Structure ◽  
Parallel Optimization ◽  
Analysis Model ◽  
Drawing Speed ◽  
Tracing Algorithm ◽  
Computing Node ◽  
Photorealistic Images

AbstractThis paper proposes a parallel computing analysis model HPM and analyzes the parallel architecture of CPU–GPU based on this model. On this basis, we study the parallel optimization of the ray-tracing algorithm on the CPU–GPU parallel architecture and give full play to the parallelism between nodes, the parallelism of the multi-core CPU inside the node, and the parallelism of the GPU, which improve the calculation speed of the ray-tracing algorithm. This paper uses the space division technology to divide the ground data, constructs the KD-tree organization structure, and improves the construction method of KD-tree to reduce the time complexity of the algorithm. The ground data is evenly distributed to each computing node, and the computing nodes use a combination of CPU–GPU for parallel optimization. This method dramatically improves the drawing speed while ensuring the image quality and provides an effective means for quickly generating photorealistic images.

Dosimetric Accuracy of Ray-tracing Algorithm for Treatment of Thoracic Spine Lesions Using Robotic Radiosurgery

2012 ◽  
Vol 84 (3) ◽  
pp. S280 ◽  
Author(s):  
R.L. Ebeling ◽  
J. Hiatt ◽  
O. Adetokunbo ◽  
M. Goldman ◽  
B. Curran ◽  
...  
Keyword(s):  
Ray Tracing ◽  
Thoracic Spine ◽  
Robotic Radiosurgery ◽  
Dosimetric Accuracy ◽  
Tracing Algorithm

Uncertainties evaluations in the ray-tracing algorithm based on Monte Carlo method

2014 ◽  
Author(s):  
Guojin Feng ◽  
Ping Li ◽  
Yingwei He ◽  
Yu Wang ◽  
Houping Wu
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Ray Tracing ◽  
Tracing Algorithm

scholarly journals ENHANCED RAY TRACING ALGORITHM TO GENERATE PENUMBRA BY POINT LIGHT

2016 ◽  
Vol 81 (724) ◽  
pp. 563-572 ◽  
Author(s):  
Momoko YOSHIMURA ◽  
Shinichi KASAHARA
Keyword(s):  
Ray Tracing ◽  
Tracing Algorithm ◽  
Point Light

Systematic errors of the ray-tracing algorithm

1993 ◽  
Vol 38 (2-4) ◽  
pp. 207-221 ◽  
Author(s):  
Hilmar Lehnert
Keyword(s):  
Ray Tracing ◽  
Systematic Errors ◽  
Tracing Algorithm

Rf field mapping inside a large passenger-aircraft cabin using a refined ray-tracing algorithm

2013 ◽  
Vol 55 (1) ◽  
pp. 276-288 ◽  
Author(s):  
B. Choudhury ◽  
H. Singh ◽  
J. P. Bommer ◽  
R. M. Jha
Keyword(s):  
Ray Tracing ◽  
Field Mapping ◽  
Aircraft Cabin ◽  
Tracing Algorithm ◽  
Passenger Aircraft
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