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A Ray Tracing Solution for Diffuse Interreflection
https://eta.lbl.gov/publications/ray-tracing-solution-diffuse
Abstract. An efficient ray tracing method is presented for calculating interreflections between surfaces with both diffuse and specular components. A Monte Carlo technique computes the indirect contribution sto illuminance at locations chosen by the rendering process. The indirect illuminance values are averaged over surfaces and used in place ...
Ray tracing tutorial - section 2: diffuse shading
https://www.groovyvis.com/other/raytracing/diffuse.html
Object, the surface normal at that point and the location of the light. Diffuse surfaces reflect photons in all directions equally, so it doesnt matter what direction the ray That instigates the calculation comes from. A surface normal is a vector that is perpendicular to a plane that is tangent to a surface at a point (fig 1.)
A Ray Tracing Solution to Diffuse Interreflection
https://floyd.lbl.gov/radiance/papers/sg88/paper.html
An efficient ray tracing method is presented for calculating interreflections between surfaces with both diffuse and specular components. A Monte Carlo technique computes the indirect contributions to illuminance at locations selected during the rendering process. The indirect illuminance values are averaged over surfaces and used in place of a ...
raytracing - Diffuse lighting calculations in ray-tracer
https://computergraphics.stackexchange.com/questions/9065/diffuse-lighting-calculations-in-ray-tracer
Something else you might try to help narrow down the problem space is replacing the diffuse calculation with 1 iff L. N > 0 (i.e. if the light is in front of the surface), 0 o/w. That will give you a sharp line instead of a gradient, and if that sharp line is in the wrong place, you know the input vectors are wrong.
Basic Ray Tracing
https://www.csee.umbc.edu/~adamb/435/Slides/raytrace.pdf
Diffuse Component • Lambert’s Law –Intensity of reflected light proportional to cosine of angle between surface and incoming light direction –Applies to “diffuse,” “Lambertian,” or “matte” surfaces –Independent of viewing angle • Use as a component of non-Lambertian surfaces 11 Diffuse Component 12 k dI(ˆl·nˆ) max(k dI(ˆl·nˆ),0) Diffuse Component
Raytracing - how to combine diffuse and specular color?
https://stackoverflow.com/questions/15619830/raytracing-how-to-combine-diffuse-and-specular-color
You can dim the light source a bit, that is multiply the diffuse-strength you calculated form the cosine by the brightness - say 0.8 or 0.7. You could limit the color-saturation (green that is) of the sphere and make it less greeen ;)
Rayground | Ray Tracing in One Weekend: "8. Diffuse …
https://www.rayground.com/view/-o_deCr290Y
Rayground is an online framework for rapid prototyping of algorithms based on the ray tracing paradigm. This website uses cookies to help us give you the best experience when you visit our website. ... Ray Tracing in One Weekend: "8. Diffuse Materials" Restart. Pause. Frames: 0
Introduction to Ray Tracing: a Simple Method for Creating …
https://www.scratchapixel.com/lessons/3d-basic-rendering/introduction-to-ray-tracing/raytracing-algorithm-in-a-nutshell
Conclusion: Forward ray-tracing (or light tracing because we shoot rays from the light) makes it technically possible simulate the way light travels in nature on a computer. However, this method, as discussed, is not efficient or practical.
Ray tracing (graphics) - Wikipedia
https://en.wikipedia.org/wiki/Ray_tracing_(graphics)
Optical ray tracing describes a method for producing visual images constructed in 3D computer graphics environments, with more photorealism than either ray casting or scanline rendering techniques. It works by tracing a path from an imaginary eye through each pixel in a virtual screen, and calculating the color of the object visible through it.
Ray tracing and shading
http://graphics.cs.cmu.edu/courses/15-468/lectures/lecture3.pdf
Diffuse reflection - light is reflected in all directions - colored by surface color Smooth specular reflection/refraction (e.g. chrome, glass, glaze/varnish) - light reflected/refracted only in a single direction - colored by source color 15 Idealized materials 16 Diffuse reflection 17 Diffuse reflection Real surface Lambertian reflection
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