Abstract:Calibration is important to perform accurate shape measurement using a grating projection. It is required to calculate spatial coordinates from the phase value of a projected grating in short time for real-time shape measurement. We propose a calibration method using multiple reference planes. This method excludes a lens distortion and intensity errors of a projected grating in measurement results theoretically. Tabulation of relationship between phase values and spatial coordinates for each pixel makes short-… Show more
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