Image Processing Reference
In-Depth Information
CHAPTER 37
Practical issues for binary
code patern unwrapping in
fringe projection method
1
Department of Geomatics Engineering, College of Engineering,
University of Tehran, Tehran, Iran
2
Department of Mathematics and Computer Science, Laurentian University, Sudbury, Ontario, Canada
Abstract
A fringe projection system for three-dimensional (3D) reconstructions has been implemented and exper-
imentation done with binary code patern unwrapping based on time analyses approaches. The object
under consideration is a sculpture of a woman. A step by step demonstration of the processes involved
in fringe patern projection on the object and 3D reconstruction of the object is presented. Evaluation was
done by 3D printing the resulting point cloud and comparing the printed object with the original object.
In the process of trial and error to obtain high-quality outputs at each step, an ideal setting was estab-
lished for fringe patern generation and fringe patern photography. The requirements for achieving that
ideal experimental environment are highlighted. Long-range objective is the implementation of 3D re-
construction on a handheld device (a less than ideal seting).
Keywords
Digital fringe projection
3D reconstruction
Phase unwrapping
Phase shifting
1 Introduction
Due to the growing need to produce three-dimensional (3D) data in various fields such as ar-
cheology modeling, reverse engineering, quality control, industrial components, computer vis-
ion and virtual reality, and many other applications, the lack of a stable, economic, accurate,
and flexible 3D reconstruction system that is based on a factual academic investigation is re-
commended. As an answer to that demand, fringe projection has emerged as a promising 3D re-
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