The appearance of rendered objects in digital 3D prototyping and design is dependent on the underlying BRDF (Bidirectional Reflectance Distribution Function) implementation used by rendering software packages. However, the lack of standards for exchanging material parameters and data between different tools poses challenges for artists. They often have to manually match the appearance of materials to a reference image, which can be non-uniform and counterintuitive due to the complex nature of BRDF models.
To address these challenges, two strategies will be presented. The first strategy, titled "Towards a Consistent, Tool Independent Virtual Material Appearance," involves a post-processing technique that aims to match the rendering of the source renderer to the target renderer. This approach focuses on achieving consistency and independence from specific rendering tools.
The second strategy, called "Perceptually Validated Cross-Renderer Analytical BRDF Parameter Remapping," introduces a real-time BRDF remapping technique. It automatically computes a mapping to match the appearance of a source material model to a target material model. The remapping framework is validated through quantitative analysis, user studies, and psychometric scaling experiments. These experiments demonstrate that the remapping technique produces visually faithful results when applied to different analytical BRDFs.
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Meeting ID: 970 4197 3598
About the speaker
Day’ra Guarnera (University of York)