GPU-based simulation of plane wave echocardiography with view-dependent speckle using optical ray tracing

2021 ◽  
Author(s):  
Megan Yociss ◽  
Baowei Fei
Keyword(s):  
Plane Wave ◽  
Ray Tracing ◽  
Optical Ray Tracing

scholarly journals Investigating Intense Rainfall Influence on Distance Measurement with a Time-of-Flight Camera Sensor Using Optical Ray-Tracing Simulation Technique

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1056
Author(s):  
Marcus Baumgart ◽  
Norbert Druml ◽  
Markus Dielacher ◽  
Cristina Consani
Keyword(s):  
Ray Tracing ◽  
Time Of Flight ◽  
Autonomous Driving ◽  
Intense Rainfall ◽  
Signal Suppression ◽  
Tof Camera ◽  
Ray Tracing Simulation ◽  
Camera Sensors ◽  
Optical Ray Tracing ◽  
Rain Effect

Robust, fast and reliable examination of the surroundings is essential for further advancements in autonomous driving and robotics. Time-of-Flight (ToF) camera sensors are a key technology to measure surrounding objects and their distances on a pixel basis in real-time. Environmental effects, like rain in front of the sensor, can influence the distance accuracy of the sensor. Here we use an optical ray-tracing based procedure to examine the rain effect on the ToF image. Simulation results are presented for experimental rain droplet distributions, characteristic of intense rainfall at rates of 25 mm/h and 100 mm/h. The ray-tracing based simulation data and results serve as an input for developing and testing rain signal suppression strategies.

Optical Ray Tracing for the Calculation of Optimized Corneal Ablation Profiles in Refractive Treatment Planning

2008 ◽  
Vol 24 (4) ◽  
pp. S446-S451 ◽  
Author(s):  
Michael Mrochen ◽  
Michael Bueeler ◽  
Christof Donitzky ◽  
Theo Seiler
Keyword(s):  
Treatment Planning ◽  
Ray Tracing ◽  
Optical Ray Tracing

Optical Ray Tracing Using Parallel Processors

2005 ◽  
Vol 54 (1) ◽  
pp. 87-97 ◽  
Author(s):  
C.B. Cameron ◽  
R.N. Rodriguez ◽  
N. Padgett ◽  
E. Waluschka ◽  
S. Kizhner
Keyword(s):  
Ray Tracing ◽  
Parallel Processors ◽  
Optical Ray Tracing

scholarly journals Optical modeling of a solar dish thermal concentrator based on square flat facets

2014 ◽  
Vol 18 (3) ◽  
pp. 989-998 ◽  
Author(s):  
Sasa Pavlovic ◽  
Velimir Stefanovic ◽  
Suad Suljkovic
Keyword(s):  
Ray Tracing ◽  
Focal Length ◽  
Performance Model ◽  
Thermal Processes ◽  
Medium Temperature ◽  
Optical Modeling ◽  
Radiative Power ◽  
Temperature Levels ◽  
Reflecting Surface ◽  
Optical Ray Tracing

Solar energy may be practically utilized directly through transformation into heat, electrical or chemical energy. We present a procedure to design a square facet concentrator for laboratory-scale research on medium-temperature thermal processes. The efficient conversion of solar radiation into heat at these temperature levels requires the use of concentrating solar collectors. Large concentrating dishes generally have a reflecting surface made up of a number of individual mirror panels (facets). Optical ray tracing is used to generate a system performance model. A square facet parabolic solar concentrator with realistic specularly surface and facet positioning accuracy will deliver up to 13.604 kW of radiative power over a 250 mm radius disk (receiver diameter) located in the focal plane on the focal length of 1500mmwith average concentrating ratio exceeding 1200. The Monte Carlo ray tracing method is used for analysis of the optical performance of the concentrator and to identify the set of geometric concentrator parameters that allow for flux characteristics suitable for medium and high-temperature applications.

scholarly journals Increased Light Harvesting by Structured Cell Interconnection Ribbons: An Optical Ray Tracing Study Using a Realistic Daylight Model

2016 ◽  
Vol 92 ◽  
pp. 505-514 ◽  
Author(s):  
Hendrik Holst ◽  
Henning Schulte-Huxel ◽  
Matthias Winter ◽  
Susanne Blankemeyer ◽  
Robert Witteck ◽  
...  
Keyword(s):  
Ray Tracing ◽  
Light Harvesting ◽  
Optical Ray Tracing
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