Optical recognition of three-dimensional objects with scale invariance using a classical convergent correlator

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

doi:10.1117/1.1476326

1 June 2002 Optical recognition of three-dimensional objects with scale invariance using a classical convergent correlator

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

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Optical Engineering, Vol. 41, Issue 6, (June 2002). https://doi.org/10.1117/1.1476326

We present a real-time method for recognizing threedimensional (3-D) objects with scale invariance. The 3-D information of the objects is codified in deformed fringe patterns using the Fourier transform profilometry technique and is correlated using a classical convergent correlator. The scale invariance property is achieved using two different approaches: the Mellin radial harmonic decomposition and the logarithmic radial harmonic filter. Thus, the method is invariant for changes in the scale of the 3-D target within a defined interval of scale factors. Experimental results show the utility of the proposed method.

©(2002) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Jose J. Esteve-Taboada, Javier Garcia, and Carlos Ferreira "Optical recognition of three-dimensional objects with scale invariance using a classical convergent correlator," Optical Engineering 41(6), (1 June 2002). https://doi.org/10.1117/1.1476326

Published: 1 June 2002

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