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

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Toward dynamic recalibration and three-dimensional reconstruction in a structured light system.

Y F Li¹, B Zhang

¹Department of Manufacturing Engineering and Engineering Management, City University of Hong Kong, Hong Kong.

Journal of the Optical Society of America. A, Optics, Image Science, and Vision

|February 16, 2007

Summary

This study introduces a dynamic recalibration and 3D reconstruction method using structured light. It enables online camera calibration and 3D imaging, even with a handheld camera.

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Area of Science:

Computer Vision
Robotics
3D Imaging

Background:

Accurate 3D reconstruction requires precise camera calibration.
Traditional methods are often time-consuming and require static setups.
Dynamic environments pose challenges for real-time calibration.

Purpose of the Study:

To develop a dynamic recalibration method for structured light systems.
To enable online determination of camera focal length, aspect ratio, and motion parameters.
To facilitate efficient 3D reconstruction using a single image with a handheld camera.

Main Methods:

Utilized a structured light system with pre-calibrated light planes.
Developed an online algorithm for determining camera intrinsic and extrinsic parameters.
Implemented both triangulation and a more efficient transformation-based 3D reconstruction method.

Main Results:

Successfully demonstrated dynamic recalibration and 3D reconstruction.
The transformation-based method allows reconstruction from a single image.
Validated the approach through computer simulations and real-world experiments.

Conclusions:

The proposed method offers efficient and dynamic 3D reconstruction capabilities.
It simplifies calibration requirements, allowing for handheld camera applications.
This advancement has potential implications for real-time 3D modeling and analysis.