MS41Visual appearence of surfaces: concepts and metrology
Senior technicians or engineers wishing to deepen the different issues related to characterization and simulation of surfaces.
Fundamentals of photometry and optics for lighting, basic knowledge on computer sciences softwares such as Matlab
- To use advanced tools for realistic simulation of photometry, and visual aspect of a lighting system.
- To be able to relate the characteristics of surfaces to their expected and observed visual aspect.
- To know how to use of the relevant characterisation tools.
Light-Matter interactions on surfaces
- Absorption, diffusion in mediums, reflection/transmission at rough or plane interfaces
- Appearance of a spectrum and color properties (luminance, tint, colorfulness…)
- Visual appearance of surfaces (colorimetric aspect, diffused aspect, brightness, gonio-chromatic aspect, BRDF)
Characterization of surfaces (BRDF), visual aspect
- BRDF representations, models and their applications (Empirical model for image synthesis (Phong, Blinn-Phong), Physical model for simulation (He, Cook-Torrance)
- Characterizing BRDF and converting datas to models (characterisation tools, tools precision limits, optimization methods (fitting) and precision)
Surface characterization and visual aspect of materials
- Appearance and visual attributes
- Radiometric characterization of materials
- Light absorption and scattering in materials
- Surface reflection and scattering (parameters and models)
- Layered surfaces (extended two-flux models)
BRDF & Metrology
- Practical realization of a goniospectrophotometer
- Classical designs for gonio
- Sample holder (robot based, Rotation stage based)
- Illuminated area and the consequences for the design
- Metrology and good measurement practices
Optical surface characterization
- Definitions, Measurement methods, Sample overview, Application
- Human factor and Human centered design
- Human brain, human behavior, human groups
- Interface inspection
- Heuristic, ergonomic criteria & validation methods
- User experience
Courses and tutorials
Prochaines sessions, inscrivez-vous !
- Mathieu Hébert - Associate Professor at Institut d'Optique