Three-dimensional object recognition based on multiple perspectives imaging with microlens arrays

Author

Matoba, Osamu ; Tajahuerce, Enrique ; Javidi, Bahram

Author_Institution

Inst. of Ind. Sci., Univ. of Tokyo, Japan

Volume

2

fYear

2001

fDate

2001

Firstpage

495

Abstract

We describe a novel optical system to recognize 3D objects in real time by using multiple perspectives based on integral photography. Multiple perspectives of the 3D objects are obtained by using microlens arrays. Then, an optical processor in cascade performs the correlation between the 3D objects in real time. The proposed system, consists of two subsystems. One is a projection system of a 3D object into an array of 2D images that contain different perspectives of the 3D object and the other is an optical processor to perform the 2D correlation. In the projection system, similar to those used in integral photography, a 3D object under incoherent illumination is projected as an array of 2D elemental images by a periodic microlens array

Keywords

CCD image sensors; Fourier transform optics; microlenses; object recognition; optical arrays; optical correlation; photography; spatial light modulators; 2D images; 2D optical correlation; 3D object recognition; incoherent illumination; integral photography; microlens arrays; multiple perspectives; multiple perspectives imaging; optical processor; optical system; periodic microlens array; projection system; real time; subsystems; Holographic optical components; Holography; Lenses; Microoptics; Object recognition; Optical arrays; Optical filters; Optical imaging; Optical recording; Photography;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society, 2001. LEOS 2001. The 14th Annual Meeting of the IEEE

Conference_Location

San Diego, CA

ISSN

1092-8081

Print_ISBN

0-7803-7105-4

Type

conf

DOI

10.1109/LEOS.2001.968889

Filename

968889