Modeling and rendering of metallic patinas
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
Flow and changes in appearance
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
A framework for realistic image synthesis
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
PG '03 Proceedings of the 11th Pacific Conference on Computer Graphics and Applications
Visual simulation of weathering by γ-ton tracing
ACM SIGGRAPH 2005 Papers
Colorimetric and Chemical Modeling Based Aging Simulation of Dunhuang Murals
CIT '05 Proceedings of the The Fifth International Conference on Computer and Information Technology
Appearance manifolds for modeling time-variant appearance of materials
ACM SIGGRAPH 2006 Papers
Time-varying surface appearance: acquisition, modeling and rendering
ACM SIGGRAPH 2006 Papers
Technical Section: A survey of aging and weathering phenomena in computer graphics
Computers and Graphics
Digital Modeling of Material Appearance
Digital Modeling of Material Appearance
Physical reproduction of materials with specified subsurface scattering
ACM SIGGRAPH 2010 papers
Image-guided weathering: A new approach applied to flow phenomena
ACM Transactions on Graphics (TOG)
Color changing and fading simulation for frescoes based on empirical knowledge from artists
PCM'06 Proceedings of the 7th Pacific Rim conference on Advances in Multimedia Information Processing
Stone weathering in a photograph
EGSR'11 Proceedings of the Twenty-second Eurographics conference on Rendering
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The fading of materials due to light exposure over time is a major contributor to the overall aged appearance of man-made objects. Although much attention has been devoted to the modeling of aging and weathering phenomena over the last decade, comparatively little attention has been paid to fading effects. In this article, we present a theoretical framework for the physically based simulation of time-dependent spectral changes induced by absorbed radiation. This framework relies on the general volumetric radiative transfer theory, and it employs a physicochemical approach to account for variations in the absorptive properties of colorants. Employing this framework, a layered fading model that can be readily integrated into existing rendering systems is developed using the Kubelka-Munk theory. We evaluate its correctness through comparisons of measured and simulated fading results. Finally, we demonstrate the effectiveness of this model through renderings depicting typical fading scenarios.