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

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A fast 3D reconstruction system with a low-cost camera accessory.

Yiwei Zhang¹, Graham M Gibson¹, Rebecca Hay¹

¹SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, UK.

Scientific Reports

|June 10, 2015

Summary

This study presents a low-cost accessory for digital single-lens reflex (DSLR) cameras, enabling fast 3D reconstruction using photometric stereo. The system achieves high accuracy for 3D imaging with varying object complexities.

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Area of Science:

Computer Vision
3D Imaging
Photogrammetry

Background:

Photometric stereo is a 3D imaging technique utilizing multiple 2D images from a fixed viewpoint under varying illumination.
It offers advantages over methods like geometry modeling and 3D scanning due to its simple and efficient reconstruction process.

Purpose of the Study:

To develop a low-cost accessory for commercial DSLR cameras to perform fast 3D object reconstruction.
To enable rapid 3D imaging applications using photometric stereo.

Main Methods:

The developed accessory integrates four white LED lights onto a DSLR camera lens.
A USB programmable controller board sequentially manages the LED illumination.
3D reconstruction is performed on objects with diverse geometric features.

Main Results:

The system successfully derived 3D images for objects of varying geometric complexity.
A typical height error of less than 3 mm was achieved for a 50 mm sized object.

Conclusions:

The low-cost DSLR accessory provides a viable and efficient solution for photometric stereo 3D reconstruction.
This method offers a practical approach for fast and accurate 3D imaging.