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What is Diffuse Reflection? - Computer Hope
https://www.computerhope.com/jargon/d/diffuse-reflection.htm#:~:text=In%20CGI%2C%20diffuse%20reflection%20can%20be%20calculated%20by,to%20render%20the%20image%2C%20but%20produces%20better%20results.
Diffuse Reflection - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/engineering/diffuse-reflection
Diffuse reflection is seen when radiation penetrates below the surface before being scattered or reflected back from within the sample. Spectra of this kind have the character of transmission spectra since there is absorption as the radiation travels inside the sample. Samples for diffuse reflection are generally powders (Figure 12). Accessories for this kind of measurement have to …
What is Diffuse Reflection? - Computer Hope
https://www.computerhope.com/jargon/d/diffuse-reflection.htm
In CGI, diffuse reflection can be calculated by a ray tracer to enhance the photorealism of a rendered image. Instead of reflecting the light (specular reflection), the ray tracer takes samples of multiple diffuse reflection angles. This process increases the time and processing power required to render the image, but produces better results.
Ray tracing tutorial - section 2: diffuse shading
https://www.groovyvis.com/other/raytracing/diffuse.html
I = r o + r d * t, where r o is the origin of the ray, r d is the direction of the ray and t is the distance From the ray's origin to the intersection, which has already been calculated by the ray-object intersection function. Diffuse shading is based on the principal that more light hits the surface of an object where the angle between the surface normal and the vector from the intersection to …
Raytracing Reflection, Refraction, Fresnel, Total Internal ...
https://blog.demofox.org/2017/01/09/raytracing-reflection-refraction-fresnel-total-internal-reflection-and-beers-law/
There is non specular reflection, aka diffuse reflection, which just means that light is reflected off of a surface in a non mirror like way. This is accomplished with diffuse lighting where commonly we dot product the normal of a surface with the direction from the surface to the light to know how much to light that point on the surface.
Ray Tracing - University of Washington
https://courses.cs.washington.edu/courses/csep557/19sp/assets/lectures/ray-tracing-1pp.pdf
Ray-tracing pseudocode, revisited functiontraceRay(scene, P, d): (t Ç, N, mtrl) ¬scene.intersect(P, d) Qßray (P, d) evaluated at t Ç I= shade (scene, mtrl, Q, N, d) R= reflectDirection(N, d) I ¬I+ mtrl.k s*traceRay(scene, Q, R) ifray is entering object then hi= index_of_air(=1.0003) h t= mtrl.index else hi= mtrl.index ht= index_of_air(=1.0003)
raytracing - Ray tracing glossy reflection: sampling ray ...
https://stackoverflow.com/questions/32077952/ray-tracing-glossy-reflection-sampling-ray-direction
Specular reflection means that the angle between the incoming direction and the surface normal is equal to the angle between the outgoing direction and the surface normal. Diffuse reflection means that the angle of the outgoing direction is randomly & evenly distributed about the surface normal's hemisphere. You could think of glossy reflection as being the …
graphics - Raytracing - how to combine diffuse and ...
https://stackoverflow.com/questions/15619830/raytracing-how-to-combine-diffuse-and-specular-color
This has long been an issue with the "specular + diffuse + ambient" model of illumination. Namely, it is a hack and therefore, has no guarantee of correctness. If you're so keen on cementing your fundamentals first, take a look at the excellent book "Physically Based Ray Tracing" by Matt Pharr and Greg Humphreys.
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