Gradients, Poisson's Equation and Light Transport | Two Minute Papers #20

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Published on October 26, 2015 9:36:14 PM ● Video Link: https://www.youtube.com/watch?v=sSnDTPjfBYU

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Photorealistic rendering (also called global illumination) enables us to see how digital objects would look like in real life. It is an amazingly powerful tool in the hands of a professional artist, who can create breathtaking images or animations with. However, images created with these technique contain a substantial amount of noise until a large number of light rays are computed. Today, we're going to talk about how to use gradients and Poisson's equation to speed up this process substantially.

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The paper "Gradient-Domain Path Tracing" is available here:
https://mediatech.aalto.fi/publications/graphics/GPT/

The paper "Gradient-Domain Metropolis Light Transport" is available here:
https://mediatech.aalto.fi/publications/graphics/GMLT/

I held a course on photorealistic rendering at the Technical University of Vienna. Here you can learn how the physics of light works and to write programs like this:
https://www.youtube.com/playlist?list=PLujxSBD-JXgnGmsn7gEyN28P1DnRZG7qi

Recommended for you:
Metropolis Light Transport - https://www.youtube.com/watch?v=f0Uzit_-h3M&index=9&list=PLujxSBD-JXgnqDD1n-V30pKtp6Q886x7e
Manipulating Photorealistic Renderings - https://www.youtube.com/watch?v=L7MOeQw47BM&index=6&list=PLujxSBD-JXgnqDD1n-V30pKtp6Q886x7e
A talk on ray tracing - https://www.youtube.com/watch?v=qyDUvatu5M8

The Moon's elevation map is provided by NASA and is available here (license: CC BY 2.0) - https://flic.kr/p/aFqE3n

Music:
"Infinite Perspective" by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1500024
Artist: http://incompetech.com/

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