Automated detection of creases and/or tears in scanned prints

Details Automated detection of creases and/or tears in scanned prints Automated detection of creases and/or tears in scanned prints

2011-04-12

2011-04-12

Worku, Negussie (Department: 2625)

Facsimile and static presentation processing

Facsimile

Picture signal generator

C358S497000, C358S486000, C358S488000, C382S318000, C382S275000

Reexamination Certificate

active

07924477

ABSTRACT:
Images of a document having a surface are captured. In this process, multiple scan lines respectively illuminated from different illumination angles relative to the document surface are scanned across the document surface in a first scan direction in relation to orientation of the document. Multiple scan lines respectively illuminated from different illumination angles relative to the document surface are scanned across the document surface in a second scan direction in relation to orientation of the document. The captured images are generated from scan line illumination reflected from the document surface during the scanning of respective ones of the scan lines across the document surface. A crease or a tear is detected in the document based on the captured images.

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