Registers – Coded record sensors – Particular sensor structure
Patent
1989-07-13
1992-07-28
Levy, Stuart S.
Registers
Coded record sensors
Particular sensor structure
235464, 382 12, 382 48, G06K 920, G06K 710, G06K 932
Patent
active
051342723
ABSTRACT:
An apparatus for receiving input data values representing an array of picture elements of a source image containing one or more bar code regions, whereby the input data values are converted to bi-level values representing black or white states which are stored in an image memory, while in addition the bi-level values are processed to obtain data representing an image in which a "skeleton" central portion of the bar code region appears as an all-black region, while background black regions are eliminated. A central position and the slope of a central axis of the bar code region are computed based on that "skeleton" region, and data values in the image memory which conform to the central axis are then read out, to read the bar code data.
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"Types of Bar Code Reader"; Nikkei Electronics of Dec. 22, 1980, p. 142.
Siemens Forsch. u. Entwickl. Berichte, vol. 8, No. 5, 1979, pp. 297-302; U. Hendricks et al.: "Analoge Echtzeitbildverarbeitung zur Erzeugung binarer Muster".
Fujita Mikio
Komizo Shigeo
Kotera Hiroaki
Nakazato Katsuo
Sannomiya Kunio
Levy Stuart S.
Matsushita Electric - Industrial Co., Ltd.
Rhoa Joseph A.
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