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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.
raytracing - How is Anti Aliasing Implemented in Ray …
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.
12. Anti-aliasingand Distribution Ray Tracing
https://courses.cs.washington.edu/courses/csep557/01sp/lectures/aa-and-drt.pdf
Antialiasingin 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 aliasingartifacts. To improve matters, we can cast more than one ray per pixel and average the result. A.k.a., super-sampling and averaging down.
GitHub - crysoberil/Anti-aliased-Ray-Tracing
https://github.com/crysoberil/Anti-aliased-Ray-Tracing
Anti-aliased-Ray-Tracing. A ray tracing system which parses 3D scene described with orientation of geometric primitives and allows the user to explore in real-time the CPU based ray traced scene with ultra high realism. Features. CPU based ray tracer built from scratch. Users can explore the ray-traced world in real-time using keyboard control.
raytracing - Anti-aliasing / Filtering in Ray Tracing
https://computergraphics.stackexchange.com/questions/2130/anti-aliasing-filtering-in-ray-tracing
In ray tracing / path tracing, one of the simplest way to anti-alias the image is to supersample the pixel values and average the results. IE. instead of shooting every sample through the center of the pixel, you offset the samples by some amount. In searching around the internet, I've found two somewhat different methods to do this:
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