Method of decoding a symbol with a low contrast

Details Method of decoding a symbol with a low contrast Method of decoding a symbol with a low contrast

2007-12-25

2007-12-25

Lee, Michael G. (Department: 2876)

Registers

Coded record sensors

Particular sensor structure

Reexamination Certificate

active

10914347

ABSTRACT:
A method for encoding a symbol such as a barcode with a finder of a known pattern, comprises steps of determining a potential point on the finder edge and tracing and verifying a path representing the finder edge by checking the color of each point on the path against a threshold. The threshold is preferably reevaluated at least every several pixel movements along the path. The method may decode the barcode directly from the gray image displayed on a LCD screen without a need of a whole characterized image.

REFERENCES:
patent: 5412197 (1995-05-01), Smith
patent: 5545887 (1996-08-01), Smith et al.
patent: 5708261 (1998-01-01), Chen
patent: 6173893 (2001-01-01), Maltsev et al.
patent: 6685093 (2004-02-01), Challa et al.
patent: 60-65383 (1985-04-01), None
patent: 3-25585 (1991-02-01), None
patent: 11-316794 (1999-11-01), None
patent: 2003-30577 (2003-01-01), None
patent: 2003-337941 (2003-11-01), None
Int'l Search Report & Written Opinion Dec. 27, 2005.

Affiliated with

Also associated with

Rating

Method of decoding a symbol with a low contrast does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of decoding a symbol with a low contrast, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of decoding a symbol with a low contrast will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3842306