Sub-pixel matching algorithm for projected grating 3-D surface measurements;

The technology of optical three-dimension shape measurement is of high precision, non-touching, non-damaging, etc.

Windowed Fourier transform for 3-D shape measurement;

Study on the 3-D Shape Measurement of Physical Simulation Experiment Model;

The principle and experimental device for 3D shape measurement using Fourier transform profilometry and holographic interference fringe is introduced The holographic interference fringe is used instead of projecting fringe The gerchberg arithmetic and digital weighted filter are used in phase unwrapping The results proved that measuring method and the system is effective in actual measuremen

Holographic phase shifting technique for 3D profilometry;

In many kinds of activity 3D profilometry, Fourier Transform Profilometry(FTP) that requires only one frame of the deformed fringe pattern and one frame of reference fringe pattern makes real-time data acquiring and processing of dynamic process possible.