Technique for surface reconstruction using colored fringe patterns

摘要

This paper describes the development of an optical method of phase measurement and further three-dimensional surface reconstruction using colored structured light. The paper investigates a new method for improving the measurement of three-dimensional shapes by using color information of the measured scene as an additional parameter. The general problems of the most widely used algorithms (phase shifting profilometry and Fourier fringe analysis) are that phase maps produced by these methods are wrapped, in some cases the acquired fringe pattern does not fill the field of view, there may be spatially isolated areas and there is often invalid and/or noisy data. This paper aims to demonstrate a new method for three-dimensional surface reconstruction using colored fringe patterns. The proposed technique uses colored fringe patterns, which are projected at different angles onto the measured scene. Shortcomings, which arise using standard methods, can be overcome using a color multichannel Fourier fringe technique.