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Proceedings Paper

Real-time vision-based automatic push button system
Author(s): Nasser Kehtarnavaz; Farida Rajkotwala
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Paper Abstract

This paper presents a real-time digital signal processing system to detect the presence of pedestrians waiting to cross an intersection. A pedestrian detection algorithm is developed and implemented on a TMS320C40 DSP chip such that videosignals captured and transmitted from an actual intersection are processed in real-time. The detection algorithm consists of a background update and a background subtraction components applied to image blocks. The background update is done in order to cope with brightness changes that occur in actual outdoor scenes.In addition, waiting and moving pedestrians are distinguished by using the temporal changes of image block intensities. The results obtained indicate that this DSP implementation provides an acceptable detection rate for this traffic management problem.

Paper Details

Date Published: 3 April 1997
PDF: 9 pages
Proc. SPIE 3028, Real-Time Imaging II, (3 April 1997); doi: 10.1117/12.270339
Show Author Affiliations
Nasser Kehtarnavaz, Texas A&M Univ. (United States)
Farida Rajkotwala, Texas A&M Univ. (United States)

Published in SPIE Proceedings Vol. 3028:
Real-Time Imaging II
Divyendu Sinha, Editor(s)

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