Název: Efektivní vzorkování matic reradiace v rendererech s podporou fluorescence
Překlad názvu: Efficient Sampling of Re-radiation Matrices in Fluorescence-capable Rendering Systems
Autoři: Hua, Qingqin ; Wilkie, Alexander (vedoucí práce) ; Iser, Tomáš (oponent)
Typ dokumentu: Diplomové práce
Rok: 2021
Jazyk: eng
Abstrakt: Fluorescence is a common effect in nature, it re-emits light by absorbing photons, caus- ing a wavelength shift from a shorter wavelength to a longer one. In recent years, there is an increased interest in including fluorescence in physically-based rendering. Fluorescence behavior is properly represented as a re-radiation matrix: for a given input wavelength, this matrix indicates how much energy is re-emitted at all other wavelengths. However, such a 2D representation has a significant memory footprint, especially when a scene con- tains a high number of fluorescent objects or fluorescent textures. This thesis proposes using Gaussian Mixture Domain to model re-radiation, which allows us to significantly reduce the memory footprint. Instead of storing the full matrix, we work with a set of Gaussian parameters that also allow direct importance sampling. When accuracy is a concern, one can still use the re-radiation matrix data and just benefit from impor- tance sampling provided by the Gaussian Mixture. Our method is useful when numerous fluorescent materials are present in a scene, particularly for textures with fluorescent components. 1
Klíčová slova: počítačová grafika|renderování|simulace transportu světla|fluorescence; computer graphics|rendering|light transport simulation|fluorescence

Instituce: Fakulty UK (VŠKP) (web)
Informace o dostupnosti dokumentu: Dostupné v digitálním repozitáři UK.
Původní záznam: http://hdl.handle.net/20.500.11956/148663

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-451932


Záznam je zařazen do těchto sbírek:
Školství > Veřejné vysoké školy > Univerzita Karlova > Fakulty UK (VŠKP)
Vysokoškolské kvalifikační práce > Diplomové práce