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Updated: Jul 6, 2026

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

Published on: December 3, 2013

Optical roughness measurements with fringe projection.

R Windecker¹, S Franz, H J Tiziani

¹Institut für Technische Optik, Universität Stuttgart, Pfaffenwaldring 9, D-70569 Stuttgart, Germany. windecker@ito.uni-stuttgart.de

|March 6, 2008

Summary

This study shows fringe projection technology enables rapid 3D surface inspections for engineering applications. This technique offers high vertical resolution for accurate surface roughness characterization.

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Area of Science:

Metrology
Surface Engineering
Optical Measurement

Background:

Surface roughness is critical for engineering applications and manufacturing processes.
Accurate characterization of surface topography is essential for workpiece performance.
Existing measurement techniques can be time-consuming or lack sufficient resolution.

Purpose of the Study:

To demonstrate the capability of fringe projection technique for fast 3D surface inspections.
To present a modular measuring instrument based on a zoom stereo microscope setup.
To evaluate the performance of the technique for surface roughness measurements.

Main Methods:

Utilizing fringe projection technique for 3D surface profiling.
Implementing a modular measuring instrument with a zoom stereo microscope.

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Last Updated: Jul 6, 2026

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Measuring surface roughness over an area with high speed and resolution.

Main Results:

Achieved inspection times of less than 5 seconds for entire measurements.
Demonstrated magnification-dependent vertical resolution as high as 0.1 micrometers.
Showcased comparability with tactile and other optical sensors for roughness parameters.

Conclusions:

Fringe projection technique provides a very fast method for 3D surface characterization.
The developed instrument is suitable for accurate and efficient surface roughness measurements.
The technique shows promise for industrial applications requiring detailed surface analysis.