Number plate recognition system

Details Number plate recognition system Number plate recognition system

1993-05-26

1994-05-24

Mancuso, Joseph

Image analysis

Histogram processing

For setting a threshold

382 9, 382 48, G06K 900

Patent

active

053156641

ABSTRACT:
A number plate recognition system has structure for inputting an image; structure for calculating outlines of each configuration included in an input image, as well as for recognizing a configuration with the maximal outline size as the plate area. The areas in an image except the above plate area are masked, and the numbers are determined by using Euler numbers after calculating Euler numbers for each configuration within the above plate area.

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patent: 4567609 (1986-01-01), Metcalf
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patent: 4878248 (1989-10-01), Shyu et al.
Stephen B. Gray, Local Properties of Binary Images in Two Dimensions, vol. C-20, No. 5, May 1971.
Iida et al., "Development of the High Speed Image Processing System and Its Application", Mitsubishi Jukogyo Giho, vol. 27, No. 1, pp. 76-80, 1990.

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