A System For Graphical Image Analysis

William D. McFarland; Surachai Suthasinekul; Roderick J. McLeod; Samuel J. Dwyer III

doi:10.1117/12.955712

8 December 1977 A System For Graphical Image Analysis

William D. McFarland, Surachai Suthasinekul, Roderick J. McLeod, Samuel J. Dwyer III

Proceedings Volume 0119, Applications of Digital Image Processing; (1977) https://doi.org/10.1117/12.955712
Event: 21st Annual Technical Symposium, 1977, San Diego, United States

Abstract

A system to perform digital analysis of graphical images has been developed and utilized in the analysis of six channel strip chart recordings over the past three years. Silicon linear photo-diode arrays were employed as the image digitizer, simplifying preprocessing techniques in the scanner. The scanner consists of control and logic electronics, light source, lenses, paper transport mechanism and six 128 x 1 photo-diode integrated circuit arrays. The graphics scanner is interfaced to a minicomputer system which includes display, storage, and analysis capabilities. The scanner's preprocessing includes threshold detection of edges and removal of reference grid lines from the digitized image. This system has been used to perform statistical analysis on wideband communications data as recorded on six channel strip chart recordings by the United States Air Force Communications Service at Richards-Gebaur Air Force Base. Several thousand meters of strip chart have been analyzed over the past three years, successfully demonstrating the utilization of solid state scanners and computerized analysis of graphical data.

Citation Download Citation

William D. McFarland, Surachai Suthasinekul, Roderick J. McLeod, and Samuel J. Dwyer III "A System For Graphical Image Analysis", Proc. SPIE 0119, Applications of Digital Image Processing, (8 December 1977); https://doi.org/10.1117/12.955712

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KEYWORDS

Scanners

Photodiodes

Image analysis

Diodes

Light sources

Analog electronics

Digital image processing

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