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Ray Tracing and Photon Mapping - College of Computing
https://faculty.cc.gatech.edu/~phlosoft/photon/
Watch what happens as you move around the spheres and the light under all three rendering modes: (1) standard ray tracing, (2) ray tracing with photon mapping, and (3) visualization of the photon map itself. Use keys 1, 2, and 3 on your keyboard to switch modes. The goal here was to implement ray tracing with photon mapping as simply as possible.
Photon mapping ray tracer demonstration - YouTube
https://www.youtube.com/watch?v=by7O5_WS5ys
This video is captured for the purposes of the introduction course to computer graphics at KTH. This was my final project for the course and was put together...
Ray Tracing Tutorial - GitHub Pages
https://sebastiandang.github.io/docs/cse168/RayTracing.pdf
Ray tracing is one of the numerous techniques that exist to render images with computers. The idea behind ray tracing is that physically correct images are composed by light and that light will usually come from a light source and bounce around as light rays (following a broken line path) in a scene before hitting our eyes or a camera.
Photon Mapping Made Easy - Princeton University
https://www.cs.princeton.edu/courses/archive/fall10/cos526/papers/yu05.pdf
A traditional ray tracing procedure is performed by shooting rays from the camera. When a ray hits a point P on a surface, the illumination information (i.e., flux) of the neighboring photons collected from the first pass and stored in the photon map will be added to the radiance information collected from ray tracing at P.
Basic Raytracing - Computer Graphics from Scratch ...
https://www.gabrielgambetta.com/computer-graphics-from-scratch/02-basic-raytracing.html
We know the ray passes through O, and we know its direction (from O to V ), so we can express any point P in the ray as P = O + t ( V − O) where t is any real number. By plugging every value of t from − ∞ to + ∞ into this equation, we get every point P along the ray. Let’s call ( V − O), the direction of the ray, D →. The equation becomes
A Practical Guide to Global Illumination using Ray Tracing ...
https://cgvr.cs.uni-bremen.de/teaching/cg_literatur/APracticalGuideToRayTracingAndPhotonMapping.pdf
with the implementation of the photon map as it was developed at the Technical University of Denmark. After reading this course material, it should be relatively straightforward to add an efficient implementation of the photon map algorithm to any ray tracer. 1.1 Motivation The photon mapping method is an extension of ray tracing. In 1989, Andrew
Ray Tracing - University of Washington
https://courses.cs.washington.edu/courses/csep557/19sp/assets/lectures/ray-tracing-1pp.pdf
We'll call these flows “light rays.” wLight rays travel in straight lines in free space. wLight rays do not interfere with each other as they cross. wLight rays obey the laws of reflection and refraction. wLight rays travel from the light sources to the eye, but the physics is invariant under path reversal (reciprocity). 4 Eye vs. light ray tracing
Photon Mapping
https://users.csc.calpoly.edu/~zwood/teaching/csc572/final15/dschulz/index.html
Photon mapping is a global illumination technique to render scenes with some accurate lighting quickly. This method takes longer than vanilla ray tracing but is much less resource intensive than traditional Monte Carlo Ray Tracing. Monte Carlo ray tracing traces rays to a scene and conducts multiple bounces before returning a color to the camera.
Lecture 12: Photon Mapping
https://www.cs.cornell.edu/courses/cs6620/2009sp/Lectures/Lec12_PhotonMapping_web.pdf
Photon Map • Break lighting into several components – LDS*E and LS*E paths (direct + specular) – LS+DS*E paths (caustic) – L(S|D)*DDS*E paths (indirect) • Use a different technique for each …
A Practical Guide to Global Illumination using Photon …
https://graphics.stanford.edu/courses/cs348b-00/course8.pdf
This course serves as a practical guide to photon maps. Any reader who can implement a ray tracer should be able to add an e cient implementation ofphotonmapstohisorherraytracerafterattending this course and reading the course notes. There are many reasons to augment a ray tracer with photon maps.
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