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

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Ternary Gray code-based phase unwrapping for 3D measurement using binary patterns with projector defocusing.

Dongliang Zheng, Qian Kemao, Feipeng Da

|May 3, 2017

Summary

This summary is machine-generated.

A new ternary Gray code method speeds up 3D measurements using fewer binary patterns. This technique enhances speed and accuracy in 3D measurement systems without compromising results.

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Area of Science:

Optical Metrology
Computer Vision
3D Reconstruction

Background:

3D measurement techniques using binary pattern projection are crucial for high-speed, high-accuracy applications.
Projector defocusing is a key element in enhancing these 3D measurement systems.

Purpose of the Study:

To develop a faster and equally accurate 3D measurement technique.
To reduce the number of binary patterns required for phase unwrapping.

Main Methods:

Proposed a novel ternary Gray code-based phase-unwrapping method.
Utilized projector defocusing in conjunction with the new pattern strategy.
Performed theoretical analysis, simulations, and experimental validation.

Main Results:

The ternary Gray code method enables efficient and accurate phase unwrapping.
Fewer binary patterns were used, leading to increased speed.
The method demonstrated robustness and maintained high accuracy.

Conclusions:

The proposed ternary Gray code-based phase-unwrapping method significantly improves the efficiency of 3D measurements.
This technique offers a viable solution for applications demanding high speed and accuracy in 3D reconstruction.