Title :
Artificial Visual Cortex Using DOG-Function Characteristics of New Optoelectronic Sensor
Author_Institution :
Collaborative Res. Center, Shiga Prefecture Univ.
Abstract :
The architecture using a new nonlinear optoelectronic sensor has been developed to imitate the functions of the higher level visual cortex. The optoelectronic sensor developed in this work has the properties approximated by DOG (difference of Gaussian) functions. The properties are due to the negative photoinduced current (PIC) and the negative differential (ND) characteristics according to the forward bias voltage, which have been successfully obtained for layer structures with a charge-storage layer of InAs/GaAs short period superlattice (SSL). By integrating the new sensors, an optoelectronic sensing circuit has been developed to imitate the functions of selectivity to orientation angle, motion-direction and length of slit light in visual cortex
Keywords :
Gaussian processes; III-V semiconductors; gallium arsenide; indium compounds; nonlinear optics; optical multilayers; optical sensors; optoelectronic devices; thin films; DOG-function characteristics; InAs-GaAs; artificial visual cortex; charge-storage layer; difference of Gaussian functions; forward bias voltage; negative differential characteristics; negative photoinduced current; nonlinear optoelectronic sensor; short period superlattice; thin film layers; Circuits; Humans; Intelligent sensors; Optical sensors; Optical signal processing; Optoelectronic and photonic sensors; Sensor fusion; Sensor phenomena and characterization; Sensor systems; Wiring;
Conference_Titel :
Multisensor Fusion and Integration for Intelligent Systems, 2006 IEEE International Conference on
Conference_Location :
Heidelberg
Print_ISBN :
1-4244-0566-1
Electronic_ISBN :
1-4244-0567-X
DOI :
10.1109/MFI.2006.265676
