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.
申请公布号
US6298171(B1)
申请公布日期
2001.10.02
申请号
US20000571062
申请日期
2000.05.15
申请人
LORTON CHRISTOPHER W.;GRINER JAMES C.;JONES, III CREED F.;WILLIAMS RICHARD P.;RYSTROM LARRY;ORRELL, III JAMES D.
发明人
LORTON CHRISTOPHER W.;GRINER JAMES C.;JONES, III CREED F.;WILLIAMS RICHARD P.;RYSTROM LARRY;ORRELL, III JAMES D.