A new type of electro-optical three-dimensional (3-D) correlator is proposed and demonstrated. A 3-D object scene, observed by multiple cameras from several points of view, is correlated with a 3-D complex computer-generated function. This correlator is a hybridization of the joint transform and the VanderLugt correlators, and, as such, it allows correlations to be made between 3-D real-world objects and 3-D general complex functions. Experimental results are presented.
© 2000 Optical Society of America
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(070.5010) Fourier optics and signal processing : Pattern recognition
(070.6110) Fourier optics and signal processing : Spatial filtering
(100.5090) Image processing : Phase-only filters
Youzhi Li and Joseph Rosen, "Three-Dimensional Optical Correlator with General Complex Filters," Appl. Opt. 39, 6561-6572 (2000)