Application of Fourier transform profilometry to the recognition of 3-D objects

Jose J. Esteve-Taboada; Javier Garcia; Carlos Ferreira

doi:10.1117/12.519789

30 September 2003 Application of Fourier transform profilometry to the recognition of 3-D objects

Jose J. Esteve-Taboada, Javier Garcia, Carlos Ferreira

Proceedings Volume 5227, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies; (2003) https://doi.org/10.1117/12.519789
Event: 2003 Chapter books, 2003, Bellingham, WA, United States

Abstract

Fourier transform profilometry, a well-known technique to obtain images of three-dimensional (3-D) objects, is used to achieve a real-time optical recognition of 3-D objects. A distorted grating pattern, that carries all the 3-D information of the object, is obtained from the projection of a regular fringe pattern onto the 3-D object surface. The analysis of such patterns is the basis of the optical method for recognizing 3-D objects in real time. The performance of the technique is demonstrated in two different types of correlators: the joint transform correlator and the classical convergent correlator. The proposed method is extended to the rotation-invariant and scale-invariant 3-D optical recognition. As is shown, the whole experimental setup can be constructed with simple equipment. Some experimental results, which demonstrate the ability of the method, are presented.

Citation Download Citation

Jose J. Esteve-Taboada, Javier Garcia, and Carlos Ferreira "Application of Fourier transform profilometry to the recognition of 3-D objects", Proc. SPIE 5227, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies, (30 September 2003); https://doi.org/10.1117/12.519789

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