MS41Visual appearence of surfaces: concepts and metrology
Level: Advanced/Specialized
Audience:
Senior technicians or engineers wishing to deepen the different issues related to characterization and simulation of surfaces
Prerequisites:
Fundamentals of photometry and optics for lighting, basic knowledge on computer sciences softwares such as Matlab
Language of the training: English
Maximum capacity: 5
Price: 1720 € HT -
Duration: 4 days
Objectives
- 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
Addressed topics
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)
The program
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
- Illumination
- Sample holder (robot based, Rotation stage based)
- Illuminated area and the consequences for the design
- Detection
- 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
- Usability
- Interface inspection
- Heuristic, ergonomic criteria & validation methods
- User experience
Methodology and assessment
Lectures and tutorials
Pedagogical manager(s):
- Mathieu Hébert - Professor at Institut d'Optique
All trainings:
