Paper Info
Title
A Low-Power Analog VLSI Visual Collision Detector
Abstract
We have designed and tested a single-chip analog VLSI sensor that detects imminent collisions by measuring radially expansive optic flow. The design of the chip is based on a model proposed to explain leg-extension behavior in flies during landing approaches. A new elementary motion detector (EMD) circuit was developed to measure optic flow. This EMD circuit models the bandpass nature of large monopolar cells (LMCs) immediately postsynaptic to photoreceptors in the fly visual system. A 16 X 16 array of 2-D motion detectors was fabricated on a 2.24 mm x 2.24 mm die in a standard 0.5-mum CMOS process. The chip consumes 140 muW of power from a 5 V supply. With the addition of wide-angle optics, the sensor is able to detect collisions around 500 ms before impact in complex, real-world scenes.
Year
Venue
Keywords
2003
ADVANCES IN NEURAL INFORMATION PROCESSING SYSTEMS 16
visual system,chip,optical flow
Field
DocType
Volume
Mathematical optimization,Band-pass filter,Computer science,Chip,Collision,Motion detector,Expansive,Circuit models,Very-large-scale integration,Electrical engineering,Detector,Embedded system
Conference
16
ISSN
Citations 
PageRank 
1049-5258
4
0.60
References 
Authors
1
1
Name
Order
Citations
PageRank
Reid R Harrison122257.49