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Updated: Jun 12, 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

High-speed pattern projection for three-dimensional shape measurement using laser speckles.

Martin Schaffer¹, Marcus Grosse, Richard Kowarschik

¹Institute of Applied Optics, University of Jena, Froebelstieg 1, 07743 Jena, Germany. martin.schaffer@uni-jena.de

|June 22, 2010

Summary

A novel high-speed projection system achieves 500Hz speckle pattern projection for real-time 3D measurements. This system overcomes limitations of digital light projectors and stripe methods, enabling measurement of multiple objects simultaneously.

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Last Updated: Jun 12, 2026

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Area of Science:

Optics and Photonics
Computer Vision
Metrology

Background:

Conventional digital light projector (DLP) systems are limited to 250Hz for gray-value patterns.
Stripe projection methods are common for real-time 3D measurements but require steady surfaces and phase unwrapping.
Existing techniques struggle with dynamic scenes or multiple spatially separated objects.

Purpose of the Study:

To introduce a high-speed projection system capable of projecting statistical speckle patterns at 500Hz.
To enable real-time photogrammetry stereo vision setups with structured light.
To overcome the limitations of current 3D shape measurement techniques for dynamic and complex scenarios.

Main Methods:

Development of a novel high-speed projection system utilizing statistical speckle patterns.
Implementation of the system within a real-time photogrammetry stereo vision framework.
Comparative analysis (qualitative and quantitative) against DLP projectors and stripe projection methods.

Main Results:

The proposed system successfully projects speckle patterns at 500Hz, doubling the rate of conventional DLPs.
The system demonstrates the capability to measure the shape of multiple spatially separated objects concurrently.
Performance was evaluated against established 3D measurement techniques, highlighting advantages in speed and object handling.

Conclusions:

The high-speed speckle projection system offers a significant advancement for real-time 3D shape measurement.
This technology enables the measurement of dynamic scenes and multiple objects, surpassing limitations of current methods.
The system provides a robust and versatile solution for advanced photogrammetry and 3D metrology applications.