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Proceedings Paper

Real Time Movement Detection - An Algorithm For The Image Pipeline Processors µPD7281
Author(s): Bento A. Correia; Fernando D. Carvalho
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Paper Abstract

In this paper it is described an algorithm developed for real time movement detection, in order to maximize the parallel processing possibilities of the data flow microprocessors μPD7281 (NEC). The image processing board used in this work is the French PC-OEIL, which has four ImPP's, their companion chip called Magic, 1Mbytes of image memory and additionnal circuitry for image acquisition, digitization and display. The algorithm is based on the comparison between two images, in order to generate a third one that contains the enhanced differences. The proposed method eliminates efficiently the usual noise associated with video signals and its digital conversion. It also generates a number that indicates the amount of the global variations that have been detected. The high degree of compactness that has been achieved allows the generation of all that information on a single access to the image memories. The algorithm was implemented by direct assembler programming and has been applied with very good results to surveillance tasks.

Paper Details

Date Published: 1 November 1989
PDF: 7 pages
Proc. SPIE 1199, Visual Communications and Image Processing IV, (1 November 1989); doi: 10.1117/12.970070
Show Author Affiliations
Bento A. Correia, LNETI - OPTICA (Portugal)
Fernando D. Carvalho, LNETI - OPTICA (Portugal)

Published in SPIE Proceedings Vol. 1199:
Visual Communications and Image Processing IV
William A. Pearlman, Editor(s)

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