An Optical Collision Timer

Max Longley

doi:10.1117/12.949022

7 March 1989 An Optical Collision Timer

Max Longley

Proceedings Volume 1005, Optics, Illumination, and Image Sensing for Machine Vision III; (1989) https://doi.org/10.1117/12.949022
Event: 1988 Cambridge Symposium on Advances in Intelligent Robotics Systems, 1988, Boston, MA, United States

Abstract

Lee's Time-to-Contact theory can be exploited to design simple, low-resolution optical sensors for robotics. An optical collision timer yields a direct measure of the safe time margin when approaching an object along the camera axis. This is achieved by timing the rate of image expansion ( looming ). This paper describes the Time-to-Contact paradigm, explores a family of architectures for coping with a variety of imaging conditions and concludes with a graphical simulation.

Citation Download Citation

Max Longley "An Optical Collision Timer", Proc. SPIE 1005, Optics, Illumination, and Image Sensing for Machine Vision III, (7 March 1989); https://doi.org/10.1117/12.949022

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available