Transmittance estimators implemented in Unity shaders, analysis done on a volumetric cube.
nrg-project is a unity project. Inside nrg-project/Assets/ are shaders and image capture script.
Inside images folder is jupyter notebook where the analysis was performed.
In unity scene there are cubes using different shaders from left to right: ratio next flight, delta next flight, analytical, ratio, delta, stratified MC, ray marcher.
If capturing images, move the main camera before wanted cube, set filepath in script.