Image processing for extracting unique information from...

Details Image processing for extracting unique information from... Image processing for extracting unique information from...

2008-09-16

2011-10-18

Rogers, Scott A (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S406000, C358S464000, C382S100000, C382S195000

Reexamination Certificate

active

08040571

ABSTRACT:
The present invention provides a technique relating to image processing capable of searching for, from a surface of paper, a more suitable region for matching of paper fingerprint information or print paper surface unique information. Its configuration includes a region dividing section for dividing image data including a read out paper fingerprint into a plurality of regions; a section for obtaining variance of gradation values of pixels in the individual regions divided by the region dividing section; a deciding section for making a decision from each variance value obtained by the section for obtaining variance of gradation values as to whether a corresponding region is suitable for matching of the paper fingerprint information; and an extracting section for extracting the paper fingerprint information in the region decided by the deciding section.

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