Title :
The BJT-based silicon-retina sensory system for direction- and velocity-selective sensing
Author :
Jiang, Hsin-Chin ; Wu, Chung-Yu
Author_Institution :
Inst. of Electron., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
31 May-3 Jun 1998
Abstract :
In this paper, a BJT-based silicon-retina sensory system for direction- and velocity-selective sensing is proposed and implemented. This detector can selectively detect the specified direction and speed of moving object image in two dimensions. The basic detection cell consists of one BJT-based silicon retina cell one current-mode edge extractor, two delay paths, and four correlators. The signals which are to be correlated are binary pulsed signals. The BJT-based silicon retina with the current-mode edge extractor can be easily incorporated into various motion measurement systems and associated image processing neural network to reduce the hardware complexity for VLSI implementations and provide robust edge detection. Using the proposed architecture, an experimental 2D 32×32 motion measurement chip has been fabricated by using 0.6 μm CMOS technology. The functions of the proposed sensory system are also verified through measurements
Keywords :
VLSI; edge detection; image sensors; neural chips; object detection; position measurement; 0.6 micron; BJT-based silicon-retina sensory system; CMOS technology; Si; VLSI implementations; binary pulsed signals; correlators; current-mode edge extractor; delay paths; direction-selective sensing; hardware complexity; image processing neural network; motion measurement systems; moving object image; robust edge detection; velocity-selective sensing; CMOS technology; Correlators; Delay; Detectors; Image edge detection; Image processing; Motion measurement; Object detection; Retina; Silicon;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.698762
