Methods combining multiple frames of image data
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Feb 28, 2012
Grant Date -
Jul 31, 2008
app pub date -
Mar 17, 2008
filing date -
May 2, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
In one embodiment a document authentication station, for use with passports or the like, includes a 2D image sensor (e.g., CCD- or CMOS-based video camera), and a computer device. The image sensor produces produce image data corresponding to a presented document. From this image data, the computer extracts two or more identification data. One is a digital watermark. The other can be a bar code, data glyphs, OCR data, etc. The processor then proceeds to check that the two identification data correspond in an expected fashion. If not, the document is flagged as suspect or fake. Reliability of detection can be enhanced by processing plural frames of data from the image sensor before issuing a result.
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