Model-based fringe projection II

The model-based fringe projection enables a number of other important applications besides the standard application, the three-dimensional determination of surface topography, see list below. This essential extension of the possible applications is achieved by the exact

quantitative consideration of the light propagation from the light source to the detector, i.e. in particular also within the object under investigation, can be realized on the basis of the radiative transfer equation or Maxwell´s equations.

Model-based fringe projection

  • Three-dimensional determination of the surface topography (also taking into account light penetration into scattering media)
  • Determination of the spatially resolved scattering and absorption coefficients (see picture: measurement at the wrist)
 ILM fringe projection
ILM fringe projection
  • Depth-dependent information of the optical properties (see picture)
  • Surface roughness determination
  • Characterization of the microstructure
  • Determination of the microstructure alignment
ILM fringe projection
ILM fringe projection


Prof. Dr. Alwin Kienle

Prof. Dr. Alwin Kienle

Director Materials Optics & Imaging

Tel: +49 (0)731 / 1429 224

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