Three-dimensional measurement method and system based on single grating projection
A technology of three-dimensional measurement and grating projection, which is applied in the field of three-dimensional measurement and can solve the problems of complex process and long time consumption.
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Embodiment 2
[0101] Based on Embodiment 2 of the present invention, a three-dimensional measurement system based on a single grating projection includes:
[0102] The grating module is used to defocus and project the physical grating onto the object to be tested to form a sinusoidal fringe pattern, and collect the deformed fringe pattern of the object to be tested;
[0103] Processing module, for utilizing S transformation method to process deformed fringe pattern to obtain principal value phase φ (x, y);
[0104] Also used for unwrapping based on the dewrapping method to obtain the absolute phase
[0105] The measurement module is used to calibrate the three-dimensional measurement system based on telecentric imaging to establish an imaging model and calculate the three-dimensional coordinate information of the measured object.
[0106] Based on the system described in Embodiment 2 of the present invention, the steps of utilizing the S-transformation method to process the deformed frin...
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