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Related Experiment Video

Updated: Aug 23, 2025

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

Efficient freeform-based pattern projection system for 3D measurements.

Henri Speck, Christoph Munkelt, Stefan Heist

|October 27, 2022

Summary

This summary is machine-generated.

A new hybrid projection system uses a transmissive freeform to create aperiodic sinusoidal fringe patterns for 3D surface measurements. This method offers improved efficiency and reduced power loss compared to traditional systems.

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Last Updated: Aug 23, 2025

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Area of Science:

Optics
Metrology
3D Imaging

Background:

Traditional fringe projection systems face limitations in efficiency and power dissipation.
Accurate 3D surface and shape measurement is crucial in various scientific and industrial applications.

Purpose of the Study:

To develop and present a novel hybrid projection system for 3D measurement.
To generate an aperiodic sinusoidal fringe pattern using a transmissive freeform.
To compare the performance of the new system with classical GOBO projection.

Main Methods:

Utilized a hybrid projection system combining a projection lens and a transmissive freeform.
Generated an aperiodic sinusoidal fringe pattern for 3D object surface and shape measurement.
Compared intensity distribution characteristics and measurement results with a classical GOBO projection system.

Main Results:

The transmissive freeform enabled effective, low-loss pattern projection by redistributing light.
The new system demonstrated increased total transmission intensity and reduced power dissipation.
Successful 3D surface shape measurements were recorded using the developed system.

Conclusions:

The hybrid projection system with a transmissive freeform is an effective and efficient solution for 3D measurement.
This approach offers significant advantages in terms of light utilization and power consumption over classical methods.
The system's capability for accurate 3D shape recording was validated.