16 March 2000 Monitoring and measurement of movement of objects by fringe projection method
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The methodologies and tools used recently in animation are presented and their most significant problems connected with combining real and virtual world are recognized. It includes creating of computer graphics libraries of realistic 3D objects and describing the models of animation in 3D space. The presented measurement methodology simplifies the process of generation of virtual objects and gives as the result: shape and movement description of the monitored object. Optical structured light methods are proposed for gathering the information about a shape, deformations of the shape and shifts of 3D objects. Authors apply the spatio-temporal approach, in which the spatial analysis of fringe pattern delivers information about initial shape of the object, while the temporal analysis of intensity variation I(t) in the given pixel provides information about out-of-plane displacement. I(t) is analyzed alternatively by adaptive sinusoidal fitting algorithm or by Fourier transform based methods. The comparison between these methods is given and exemplary measurements are presented.
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Michal Emanuel Pawlowski, Michal Emanuel Pawlowski, Malgorzata Kujawinska, Malgorzata Kujawinska, Marek Grzegorz Wegiel, Marek Grzegorz Wegiel, } "Monitoring and measurement of movement of objects by fringe projection method", Proc. SPIE 3958, Three-Dimensional Image Capture and Applications III, (16 March 2000); doi: 10.1117/12.380031; https://doi.org/10.1117/12.380031

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