Efficient Sampling of Re-radiation Matrices in Fluorescence-capable Rendering Systems

• Název práce v češtině: Efektivní vzorkování matic reradiace v rendererech s podporou fluorescence
• Název v anglickém jazyce: Efficient Sampling of Re-radiation Matrices in Fluorescence-capable Rendering Systems
• Klíčová slova: počítačová grafika|renderování|simulace transportu světla|fluorescence
• Klíčová slova anglicky: computer graphics|rendering|light transport simulation|fluorescence
• Akademický rok vypsání: 2019/2020
• Typ práce: diplomová práce
• Jazyk práce: angličtina
• Ústav: Katedra softwaru a výuky informatiky (32-KSVI)
• Vedoucí / školitel: prof. Dr. techn. Alexander Wilkie
• Řešitel: skrytý - zadáno a potvrzeno stud. odd.
• Datum přihlášení: 06.04.2020
• Datum zadání: 06.04.2020
• Datum potvrzení stud. oddělením: 30.04.2020
• Datum a čas obhajoby: 13.09.2021 09:00
• Datum odevzdání elektronické podoby: 22.07.2021
• Datum odevzdání tištěné podoby: 22.07.2021
• Datum proběhlé obhajoby: 13.09.2021
• Oponenti: Mgr. Tomáš Iser, Ph.D.

Zásady pro vypracování

Fluorescence is a visually important appearance feature for certain classes of materials, such as some papers, paints, minerals, wood and textiles. The effect can be natural, like in the case of wood and minerals where it is usually fairly weak, but noticeable under certain illuminations. Or it can be artificial, such as in the case of high visibility warning paint, where the effect is usually very prominent.

A key problem when including the effect in rendering engines is the fact that the re-radiation matrix of a material, the data structure which naively describes re-radiation behaviour, is quite large, which makes handling of high resolution fluorescent textures directly based on this approach infeasible. This thesis will derive an efficient sampling method for re-radiation matrices that is based on much smaller fitted data structures, and implement it in a spectral rendering system which already supports fluorescence in a way that is accurate and works, but is very memory inefficient. We will then compare our results with the existing method both in terms of accuracy, speed and memory usage.

Seznam odborné literatury

Mojzík, Michal, Alban Fichet, and Alexander Wilkie. "Handling Fluorescence in a Uni‐directional Spectral Path Tracer." Computer Graphics Forum. Vol. 37. No. 4. 2018.
Jung, Alisa, et al. "Wide Gamut Spectral Upsampling with Fluorescence." Computer Graphics Forum. Vol. 38. No. 4. 2019.
Wilkie, Alexander, Robert F. Tobler, and Werner Purgathofer. "Combined rendering of polarization and fluorescence effects." Rendering Techniques 2001. Springer, Vienna, 2001. 197-204.