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Volume ray casting - Wikipedia
https://en.wikipedia.org/wiki/Volume_ray_casting#:~:text=Volume%20ray%20casting%2C%20sometimes%20called%20volumetric%20ray%20casting%2C,from%203D%20volumetric%20data%20sets%20%283D%20scalar%20fields%29.
Volume ray casting - Wikipedia
https://en.wikipedia.org/wiki/Volume_ray_casting
Volume Rendering - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/computer-science/volume-rendering
Volume rendering is commonly accomplished using ray-tracing (or ray-casting) techniques. Ray-tracing and ray-casting techniques operate on the principle of defining rays of light from a camera view. The rays behave according to the laws of physics as related to light and optics.
Ray Tracing | NVIDIA Developer
https://developer.nvidia.com/discover/ray-tracing
Bounding Volume Hierarchy (BVH) is a popular ray tracing acceleration technique that uses a tree-based “acceleration structure” that contains multiple hierarchically-arranged bounding boxes (bounding volumes) that encompass or surround different amounts of scene geometry or primitives. Testing each ray against every primitive intersection in the scene is inefficient and …
Volume Rendering With Ray Casting - WPI
https://web.cs.wpi.edu/~matt/courses/cs563/talks/powwie/p1/ray-cast.htm
Volume rendering is a technique for visualizing sampled functions of three spatial dimensions by computing 2-D projections of a colored semitransparent volume. Currently, the major application area of volume rendering is medical imaging, where volume data is available from X-ray Computer Tomagraphy (CT) scanners and Positron Emission Tomagraphy (PET) …
GLSL Ray-Traced Volume Rendering Optimizations
https://www.marcusbannerman.co.uk/articles/VolumeRendering.html
If you have a ray-traced volume renderer, the simplest method to accelerate volume rendering is to simpy increase the ray step size. By increasing the step size, each ray/pixel requires less calculations, less texture lookups (these are really expensive!), and the …
Efficient Ray Tracing of Volume Data - Computer Science
https://web.cs.ucdavis.edu/~ma/ECS177/papers/levoy_raytrace_vol.pdf
Efficient Ray Tracing of Volume Data MARC LEVOY University of North Carolina Volume rendering is a technique for visualizing sampled scalar or vector fields of three spatial dimensions without fitting geometric primitives to the data. A subset of these techniques generates
rendering - Simple volume ray casting - Stack Overflow
https://stackoverflow.com/questions/4188060/simple-volume-ray-casting
To summarize, the ray is cast through the volume and accumulates some color with each intersection that meets some criteria. For example, each voxel along the ray possessing a value > 128 might contribute some small percentage of opacity for a desired RGB color.
Direct Volume Rendering - ETH Z
https://cgl.ethz.ch/teaching/former/scivis_07/Notes/stuff/StuttgartCourse/VIS-Modules-06-Direct_Volume_Rendering.pdf
Ray Casting is similar to ray tracing in surface-based computer graphics. In volume rendering we only deal with primary rays, i.e. no secondary rays for shadows, reflection or refraction are considered. Ray Casting is a natural image order technique. Since we have no surfaces in DVR we have to carefully step through the volume. A ray is
Exposure Render: An Interactive Photo-Realistic Volume …
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3388083/
We present a re-usable GPU-based interactive direct volume renderer that integrates stochastic ray-traced lighting, thus enabling physically-based volumetric shadows, any number of arbitrarily positioned, shaped and textured area lights and finally the modeling of a real-world camera, including its lens and aperture.
Volume Ray Casting - University of Central Florida
http://graphics.cs.ucf.edu/tools/VOLREN/pdfs/volumeRayCastingPDF.pdf
•Volume Ray Casting is construction of 3D volume using stack of 2D slices. •Since now in Ray Tracing course, when a ray hits to a surface, ray tracing stops for that ray. •In Volume Ray Casting, ray tracing accumulates information until bounding volume is exited or certain stopping criteria holds. Light Transfer Optical Models Emission
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