Shape Measurements on Large Surfaces by Fringe Projection (original) (raw)

1999, Experimental Techniques

AI-generated Abstract

This contribution investigates the application of fringe projection techniques in measuring the shape of large, relatively flat surfaces, especially focusing on a project involving highway bridge girders in Switzerland. The paper discusses challenges and solutions for adapting fringe projection methods, which are typically suited for smaller objects, to accommodate larger areas and achieve millimeter-level accuracy without contact. It emphasizes the importance of suitable illumination, phase-shift algorithms, and the subsequent processing needed to derive continuous phase surfaces that correspond to the object's shape.

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