Questions tagged [spherical-harmonics]
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12 questions
1 vote
1 answer
569 views
Understanding spherical harmonics code
I am trying to understand the function computeColorFromSH, which is a part of the differentiable gaussian rasterizer used by the paper 3D Gaussian Splatting for Real-Time Radiance Field Rendering. I ...
- 113
1 vote
0 answers
57 views
Questions about caculate the highlight direction from spherical harmonics functions
Recently I‘m working on a Precomputed GI Project I'm trying to use a technique called AHD, Amibent Highlight Direction, rendering my project; I use Unity and my target platform is Android. First: ...
- 11
0 votes
0 answers
123 views
Baked anisotropic filtering using spherical harmonics
I want to learn is it good or bad idea. Let's assume video RAM is not a problem. For source texture create a texture of texels: spherical functions. Spherical functions defined by small arrays of ...
- 241
1 vote
0 answers
82 views
Lighting ramps compressed to zonal harmonics
Let's say I have a lighting lobe represented as a ndotl ramp texture, how do I compress it into a zonal harmonic?
- 121
2 votes
1 answer
169 views
Multiplication of SH coefficient sets representing occlusion and color
Currently I got interested in implementation of Precomputed Radiance Transfer. I decided that occlusion representation (which is not trivial to compute) would be precomputed as CPU raytracing and ...
- 2,199
21 votes
3 answers
16k views
What are Spherical Harmonics & Light Probes?
What are Spherical Harmonics & Light Probes? How useful are they in computer graphics? What exactly do they do? I've heard the word spherical harmonics & Light Probes everywhere, from siggraph ...
- 2,501