Title :
Acousto-optical third order correlator
Author :
Kameyama, Keisuke ; Iwata, Masahiko ; Sakai, Takuji ; Jhang, Kyung-Young ; Sato, Takuso
Author_Institution :
Interdisciplinary Graduate Sch. of Sci. & Eng., Tokyo Inst. of Technol., Yokohama, Japan
Abstract :
An acousto-optical third order correlator consisting of a laser light source, a 2-D acousto-optical diffractor cell with signal controlling circuitry, a pin hole and a CCD connected to a computer for image processing is introduced. The correlator enables an instantaneous computation of a third order correlation map R3( tau 1, tau 2) of an arbitrary signal by way of optical computing. Through experiments, it proved that the system was able to obtain the R3 map in real-time with minimal image processing in the computer.
Keywords :
acousto-optical devices; optical correlation; optical information processing; 2-D acousto-optical diffractor cell; CCD; CCD image sensors; acousto-optical third order correlator; image processing; laser light source; optical computing; signal controlling circuitry; third order correlation map; Charge coupled devices; Circuits; Correlators; Diffraction; Image processing; Light sources; Lighting control; Optical computing; Optical control; Signal processing;
Conference_Titel :
Higher-Order Statistics, 1993., IEEE Signal Processing Workshop on
Conference_Location :
South Lake Tahoe, CA, USA
Print_ISBN :
0-7803-1238-4
DOI :
10.1109/HOST.1993.264592