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12. Anti-aliasingand Distribution Ray Tracing
https://courses.cs.washington.edu/courses/csep557/01sp/lectures/aa-and-drt.pdf
Distribution ray tracing Idea: Use non-uniform (jittered) samples. Replaces aliasingartifacts with noise. Provides additional effects if we distribute rays in other dimensions: • Reflection and refractions • Light source area • Camera lens area • Time Originally called “distributed ray tracing,” but we will
raytracing - How is Anti Aliasing Implemented in Ray Tracing ...
https://computergraphics.stackexchange.com/questions/4248/how-is-anti-aliasing-implemented-in-ray-tracing
Ray tracing with cones (Amanatides): Instead of using an infinitely thin ray, each ray is instead approximated by a cone, say with a diameter that covers all of the pixel (and a little of the neighbours) allowing you to do evaluate partial coverage. It also has benefits for texture sampling/antialiasing, soft shadows, and potentially LOD of models.
Build your own 3D renderer - Distributed ray tracing and anti-aliasing
https://avikdas.com/build-your-own-raytracer/06-distributed-ray-tracing/
The general principle of distributed ray tracing can be applied to simulate many photorealistic effects: By distributing the rays through time, a moving object will be subject to motion blur. By distributing the origin of the camera ray over a 2D interval, depth of fieldcan be simulated.
Distributed Ray Tracing Abstract - Pixar
https://graphics.pixar.com/library/DistributedRayTracing/paper.pdf
Antialiasing opens up new possibilities for ray tracing. Ray tracing need not be restricted to spatial sampling. If done with proper antialiasing, the rays can sample motion, the camera lens, and the entire shading function. This is called distributed ray tracing. Distributed ray tracing is a new approach to image syn- thesis.
GitHub - kwandrus/Distributed-Ray-Tracer: Base program …
https://github.com/kwandrus/Distributed-Ray-Tracer
Distributed-Ray-Tracer. Base program was written by Steven Parker at the University of Utah. My additions include implementing the recursive ray tracing algorithm and producing distributed ray tracing effects, namely anti-aliasing, depth of field, and motion blur.
Distributed Ray Tracing
https://web.cse.ohio-state.edu/~parent.1/classes/681/Lectures/18.DistributedRTHO.pdf
Distributed Ray Tracing. CIS 681. Anti-Aliasing. • Graphics as signal processing. – Scene description: continuous signal – Sample. CIS 681. – digital representation – Reconstruction by monitor. Anti-Aliasing. • Represent any function as sum of sinusoidals • Sampling.
Distribution Ray Tracing
https://courses.cs.washington.edu/courses/cse457/07sp/lectures/drt.pdf
Returning to the reflection example, Whitted ray tracing replaces the glossy reflection with mirror reflection: Thus, we render with anti-aliasing as follows: Whitted ray tracing 11 Let’ return to the original glossy reflection model: An alternative way to follow rays is by making random decisions along the way – a.k.a., Monte Carlo path ...
Anti-aliased and accelerated ray tracing
https://www.cs.utexas.edu/users/fussell/courses/cs384g-fall2011/lectures/lecture10-Aa_and_accel_raytracing.pdf
Antialiasing in a ray tracer We would like to compute the average intensity in the neighborhood of each pixel. When casting one ray per pixel, we are likely to have aliasing artifacts. To improve matters, we can cast more than one ray per pixel and average the result. A.k.a., super-sampling and averaging down.
Distribution Ray Tracing - University of Texas at Austin
https://www.cs.utexas.edu/~fussell/courses/cs384g-spring2010/lectures/lecture11-Drt.pdf
called distribution ray tracing [Cook84]: uses non-uniform (jittered) samples. replaces aliasing artifacts with noise. provides additional effects by distributing rays to sample: Reflections and refractions Light source area Camera lens area Time [Originally called “distributed ray …
Distributed Ray Tracing - WPI
https://web.cs.wpi.edu/~matt/courses/cs563/talks/dist_ray/dist.html
Distributed ray tracing provides a method of reducing aliasing artifacts in rendered images. This anti-aliasing is done by casting additional rays (oversampling) and …
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