Title
A silicon retina system that calculates direction of motion
Abstract
A silicon retina was fabricated to emulate two fundamental types of response in the vertebrate retinal circuit, namely the sustained and transient responses. The sustained response exhibits a Laplacian-Gaussian-like receptive field. The transient response is obtained by subtracting consecutive image frames. The outputs of the chip are offset-suppressed analog voltages since uncontrollable mismatches of transistor characteristics are compensated for with the aid of sample/hold circuits embedded in each pixel circuit. The chip was applied to extract direction of motion using FPGA in real-time under an indoor illumination.
Year
DOI
Venue
2003
10.1109/ISCAS.2003.1206316
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium
Keywords
DocType
Volume
computer vision,field programmable gate arrays,image motion analysis,sample and hold circuits,FPGA,Laplacian-Gaussian receptive field,Si,direction of motion,image processing,sample/hold circuit,silicon retina,sustained response,transient response
Conference
4
ISBN
Citations 
PageRank 
0-7803-7761-3
4
0.48
References 
Authors
5
2
Name
Order
Citations
PageRank
Seiji Kameda1257.10
Tetsuya Yagi214027.73