Patent Number: 6,298,171

Title: System for reading data glyphs

Abstract: A high speed system for locating and decoding glyphs on documents is disclosed. The system includes acquiring one or more images of a document containing a glyph. One-dimensional projections of the images are correlated against a reference function to locate the glyph in the images. The position of the glyph is refined by correlating against a kernel designed to have a maximum response when aligned over a corner of the glyph. Symbols in the glyph are decoded utilizing a kernel which generates a positive response for one symbol type and a negative response for the other.

Inventors: Lorton; Christopher W. (Bothell, WA), Griner; James C. (Woodinville, WA), Jones, III; Creed F. (Lake Stevens, WA), Williams; Richard P. (Monroe, WA), Rystrom; Larry (Mill Creek, WA), Orrell, III; James D. (Bothell, WA)


International Classification: G06K 7/14 (20060101); G06F 015/316 (); G06K 009/64 ()

Expiration Date: 10/02/2018