NDLI: Visual information processing in direct collision course

Content Provider	IEEE Xplore Digital Library
Author	Yao Dezhong Wang Ling
Copyright Year	2005
Description	Author affiliation: Sch. of Life Sci. & Technol., China Univ. of Electron. Sci. & Technol., Chengdu, China (Yao Dezhong; Wang Ling)
Abstract	In the research of direct collision course, the computation of TTC, time to collision, is thought subjectively an important critical criteria. Formula /spl tau/ /spl ap/ /spl theta///spl theta/' was usually utilized to calculate TTC where /spl theta/ is the visual angle subtended by the looming object and /spl theta/' is the derivative of /spl theta/ over time. In this paper, we found that 1//spl tau/ can also be approximated by using a weighted combination of 1/(/spl theta/+B) and /spl theta/, where B is a constant. We then built a simple computational model by including an improved back propagation algorithm as a way of simulating the brain response patterns. The accurate estimation of TTC, relative definite physiological meaning of the hidden neurons, and the good plasticity and robustness of the model imply that it is a potential and realizable model and is very likely to imitate the physiological brain mechanism of the visual information processing in the direct collision course.
Sponsorship	Huazhong Univ. of Sci. and Technol. (China) Arizona State Univ. (USA) Tsinghua Univ. (China)
Starting Page	131
Ending Page	134
File Size	587266
Page Count	4
File Format	PDF
ISBN	0780389026
DOI	10.1109/ICNIC.2005.1499860
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-05-28
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Animals Computational modeling Neurons Information processing Brain modeling Robustness Computer networks Sun Biological neural networks Optical control
Content Type	Text
Resource Type	Article

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