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

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Flexible structured-light-based three-dimensional profile reconstruction method considering lens projection-imaging

Suodong Ma¹, Rihong Zhu, Chenggen Quan

¹School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, China.

|May 23, 2012

Summary

This study introduces a new method for 3D profile reconstruction using structured-light profilometry. The technique effectively corrects lens distortion, significantly improving accuracy for 3D object profiling.

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Area of Science:

Optics and Photonics
Computer Vision
Metrology

Background:

Structured-light profilometry is vital for 3D object reconstruction.
Challenges include electronic device nonlinearities (gamma effect) and lens projection-imaging distortion.
Existing methods may struggle with complex distortion models.

Purpose of the Study:

To develop a flexible 3D profile reconstruction method.
To correct errors caused by lens distortion in structured-light profilometry.
To achieve highly accurate 3D measurements.

Main Methods:

A nonlinear iterative optimization approach is proposed.
The method corrects for lens distortion.
It is extendable to complex projection-imaging distortion models.

Main Results:

The proposed method significantly reduces errors caused by lens distortion.
Root-mean-square (RMS) error is reduced by eight times.
Achieved high accuracy with errors less than 1‰.

Conclusions:

The nonlinear iterative optimization method offers a flexible solution for 3D profile reconstruction.
It effectively addresses lens distortion challenges in structured-light profilometry.
The method enables highly accurate and reliable 3D measurements.