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Proceedings Paper

Enhancement of videotaped car license plate characters using laser videodisc recorder
Author(s): Naoki Saitoh; Kenro Kuroki; Kenji Kurosawa
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Paper Abstract

We developed a new video image processing system that consists of a laser videodisc recorder (LVR) which is controlled by a personal computer through an RS232C interface. Using this system, we can handle video images without degradation of images due to the damage of videotapes and it becomes easy to conduct multiframe image processing. We wrote a computer controlled image processing procedure for video images. We performed experiments using video images recorded by a normal 8 mm video at night. As a result, it is recognized that our new system and procedures are effective for improving the signal to noise ratio and reducing the line to line jitters. Processed results for car license plate images that are recorded on videotapes are shown. We also show examples of actual cases in which characters on the license plate can be readable after processing.

Paper Details

Date Published: 13 March 1996
PDF: 8 pages
Proc. SPIE 2666, Image and Video Processing IV, (13 March 1996); doi: 10.1117/12.234752
Show Author Affiliations
Naoki Saitoh, National Research Institute of Police Science (Japan)
Kenro Kuroki, National Research Institute of Police Science (Japan)
Kenji Kurosawa, National Research Institute of Police Science (Japan)

Published in SPIE Proceedings Vol. 2666:
Image and Video Processing IV
Robert L. Stevenson; M. Ibrahim Sezan, Editor(s)

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