System and method for embedding machine-readable codes in a document background
US8807442B2 · kind B2 · utility
2Cited by
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20Claims
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Key dates
| Filing date | Jul 18, 2012 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Sep 6, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/06103
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are disclosed for embedding a two-dimensional machine-readable code into the background of a document in an aesthetically pleasing manner. The objects (picture, graphics, text, etc.) in a document image are first segmented from the background. A location for embedding the barcode is determined. A texture image is created by replicating the barcode to a size that covers the entire image. A modulation index map is generated from the segmentation results. The original image is modulated to produce the output image based on the texture image and the modulation index map.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.