Detecting barcodes on two-dimensional images using frequency...

Details Detecting barcodes on two-dimensional images using frequency... Detecting barcodes on two-dimensional images using frequency...

2006-03-27

2008-11-18

Lee, Seung H (Department: 2887)

Registers

Coded record sensors

Particular sensor structure

C235S462010, C235S462080, C235S462250

Reexamination Certificate

active

07451931

ABSTRACT:
A system and method of detecting a barcode involves obtaining a two-dimensional source image and converting it into a frequency domain image (FDI). Frequency trends in the FDI are then analyzed to determine whether barcode information is present in the FDI. In this way, the presence, location, orientation, size and symbology of a barcode can be quickly and accurately determined.

REFERENCES:
patent: 5399846 (1995-03-01), Pavlidis et al.
patent: 6814291 (2004-11-01), Cordery et al.
patent: 7007846 (2006-03-01), Shellhammer

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