Method, an apparatus and a storage medium for locating QR codes

Details Method, an apparatus and a storage medium for locating QR codes Method, an apparatus and a storage medium for locating QR codes

2007-09-25

2007-09-25

Lee, Michael G. (Department: 2876)

Registers

Coded record sensors

Particular sensor structure

C235S462100, C235S494000

Reexamination Certificate

active

11202106

ABSTRACT:
The present application relates to a method, an apparatus and a storage medium for locating QR codes. For automatically locating a plurality of QR codes in image of any size, the invention provides an apparatus for locating at least one QR code in an image, comprising: characteristic ratio detection means for detecting the potential QR code location symbol areas by carrying out a plurality of detections for detecting the characteristic ratio of the QR code; critical edge detection means for detecting the critical edges of the potential QR code location symbol areas so that the false areas are excluded; location symbol grouping means for matching the detected QR code location symbol areas into potential QR codes; and verification means for excluding the false QR codes. The invention also provides a corresponding method for locating at least one QR code.

REFERENCES:
patent: 6279830 (2001-08-01), Ishibashi
patent: 2004/0020989 (2004-02-01), Muramatsu

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