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Distributed ray tracing - Wikipedia
https://en.wikipedia.org/wiki/Distributed_ray_tracing
Chapter 23. Depth of Field: A Survey of Techniques
https://developer.nvidia.com/gpugems/gpugems/part-iv-image-processing/chapter-23-depth-field-survey-techniques
Distributed Ray Tracing - WPI
https://web.cs.wpi.edu/~matt/courses/cs563/talks/dist_ray/dist.html
Distributed ray tracing creates depth of field by placing an artificial lens in front of the view plane. Randomly distributed rays are used once again to simulate the blurring of depth of field. The first ray cast is not modified by the lens. It is assumed that the focal point of the lens is at a fixed distance along this ray.
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 …
How to implement Depth of Field in Ray Tracer? - Stack …
https://stackoverflow.com/questions/10012219/how-to-implement-depth-of-field-in-ray-tracer
float dx = ( (rw) * 3 * pixelWidth) - 0.5; float dy = ( (rh) * 3 * pixelHeight) - 0.5; //Now here I compute point P in the scene where I want to focus my scene Vector P = Vector(0,0,0,1) + focusPoint * ray.Direction(); Vector dir = P - Vector(dx, dy, 0.0f, 1.0f); ray = Ray(Vector(dx,dy,0.0f,1.0f), dir); ray = camera.Transform() * ray; //Calling the phong shader to …
Distributed Ray Tracing Abstract - Pixar
https://graphics.pixar.com/library/DistributedRayTracing/paper.pdf
depth of field calculations should account for this and be an integral part of the visible surface and shading calcu- lations. Depth of field can be calculated by starting with the traditional ray from the center of the lens through point p on the focal plane. A point on the surface of the lens is
Distribution Ray Tracing - courses.cs.washington.edu
https://courses.cs.washington.edu/courses/cse457/07sp/lectures/drt.pdf
Depth of field Lenses do have some limitations. The most noticeable is the fact that points that are not in the object plane will appear out of focus. The depth of field is a measure of how far from the object plane points can be before appearing “too blurry.” 24 Simulating depth of field Distributing rays over a finite aperture gives:
Distributed Ray Tracing - cuni.cz
https://cgg.mff.cuni.cz/~pepca/lectures/pdf/prg-14-distributedrt.pdf
Distributed ray tracing Better image quality (fidelity) – soft shadows, glossy reflections, soft refractions – motion blur – depth of field imitation – light dispersion (index of refraction depends on ) Introducing new variables to an image function – reflection or refraction angle, wavelength, light source point, lens entry point, time…
Rendering Depth Perception through Distributed Ray Tracing
https://courses.washington.edu/css552/2016.Winter/LectureNotes/FinalResearch/1.DistributedRayTracing.pptx
Benefits of Distributed Ray Tracing for Depth of Field. Since visibility is calculated from multiple points (whereas postprocessing is still calculated from a single point) Results in a more accurate depiction of depth of field. Allows for other effects such as …
Three Techniques for Rendering Generalized Depth of Field E …
https://people.eecs.berkeley.edu/~barsky/Papers/Three.Techniques.for.Rendering.Generalized.Depth.of.Field.Effects.SIAM.2009.pdf
2.1 Overview Distributed ray tracing is a well-known method for accurately rendering depth of eld Figure 1: Top: Distributed ray tracing simulating con-ventional depth of eld. Bottom: Nonlinear distributed ray tracing simulating generalized depth of eld. [4]. Each pixel P i in Figure 1 traces a number of rays, to sample the aperture.
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