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Questions tagged [photon-mapping]

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2
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1answer
71 views

Rendering Equation for photons carrying flux

I am trying to understand the mathematical/physical foundations of photon mapping better. In the forward photon tracing step it is established, that the rays are carrying portions of total power (...
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0answers
55 views

How should I understand path-space measurement equation?

I read the corresponding chapter of PBRT-v3, as well as Veach's thesis which introduced BDPT. However I didn't quite understand why we use the measurement equation. It seems that the measurement ...
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0answers
88 views

Explain Radiance Estimate for photon mapping

I'm adding photon mapping to my current raytracer to add indirect lighting. Can someone explain how the radiance estimate works in simple terms and with some simple math? I have read a lot of ...
3
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1answer
801 views

Caustics: methods to render?

What are the recommended ways to render caustics? I am aware bidirectional path tracing and photon mapping can do this. Could someone give a brief overview of photon mapping and a good resource of ...