Three-dimensional object recognition using a quasi-correlator invariant to imaging distances.

We present a new method for performing electro-optical three-dimensional (3-D) object recognition under incoherent white-light illumination. Perspective projections of the 3-D scene are acquired from multiple points of view and then processed into a single complex two-dimensional modified Fresnel hologram of the scene. This hologram is processed with a single filter which is matched to a single object, so that all identical objects in the scene yield similar correlation peaks in the 3-D space with almost no dependency on the distances of the objects from the acquisition plane. The new method is demonstrated by experiments.

[1]  J Rosen,et al.  Three-dimensional joint transform correlator. , 1998, Applied optics.

[2]  L. Baldassarre,et al.  The linear electro-optic effect in CdS0.75Se0.25 , 1978 .

[3]  Joseph Rosen,et al.  Modified Fresnel computer-generated hologram directly recorded by multiple-viewpoint projections. , 2008, Applied optics.

[4]  Dong-Hak Shin,et al.  Scale-variant magnification for computational integral imaging and its application to 3D object correlator. , 2008, Optics express.

[5]  Bahram Javidi,et al.  Three-dimensional recognition of occluded objects by using computational integral imaging. , 2006, Optics letters.

[6]  Eun-Soo Kim,et al.  Resolution-enhanced 3D image correlator using computationally reconstructed integral images , 2007 .

[7]  N. Shaked,et al.  Multiple-viewpoint projection holograms synthesized by spatially incoherent correlation with broadband functions. , 2008, Journal of the Optical Society of America. A, Optics, image science, and vision.

[8]  Joseph Rosen,et al.  Object recognition using three-dimensional optical quasi-correlation. , 2002, Journal of the Optical Society of America. A, Optics, image science, and vision.

[9]  Richard Bamler,et al.  Three- and Four-dimensional Filter Operations by Coherent Optics , 1982 .

[10]  T C Poon,et al.  Optical image recognition of three-dimensional objects. , 1999, Applied optics.

[11]  J García,et al.  Three-dimensional object recognition by fourier transform profilometry. , 1999, Applied optics.

[12]  N. Shaked,et al.  Fluorescence multicolor hologram recorded by using a macrolens array. , 2008, Optics letters.

[13]  N. Shaked,et al.  Integral holography: white-light single-shot hologram acquisition. , 2007, Optics express.