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Proceedings Paper

Real-Time Signal And Image Thresholding Using Advanced Low-Pass Filtering
Author(s): M. H. Hassan; P. Siy
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Paper Abstract

Real-time signal and image processing techniques have recently gained popularity, due to its importance in many potential applications such as communications, robotic vision, military target detection, and part inspection. This paper presents a simple scheme for thresholding signals and grayscale images dynamically and in real-time. The scheme utilizes the transfer function of a simple low-pass filter and an advanced zero-order hold device where the input is the raw signal or the image' s grayscale values, and the output is the corresponding dynamic thresholds. The scheme features high reliability of the results and is effectively applicable for signals and images with different background illumination and different shape, such as noisy step signals, ramp signals, or their combination. Software and hardware experiments have confirmed the method' s viability.

Paper Details

Date Published: 16 December 1989
PDF: 12 pages
Proc. SPIE 0977, Real-Time Signal Processing XI, (16 December 1989); doi: 10.1117/12.948557
Show Author Affiliations
M. H. Hassan, Lawrence Institute of Technology (United States)
P. Siy, Wayne State University (United States)


Published in SPIE Proceedings Vol. 0977:
Real-Time Signal Processing XI
J. P. Letellier, Editor(s)

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