System and method for automatically detecting edges of...

Details System and method for automatically detecting edges of... System and method for automatically detecting edges of...

2005-08-16

2005-08-16

Williams, Kimberly (Department: 2626)

Facsimile and static presentation processing

Facsimile

Picture signal generator

C358S488000, C358S003150, C382S266000, C382S199000, C382S282000, C355S117000

Reexamination Certificate

active

06930804

ABSTRACT:
A method for identifying document edges collects a predetermined number scanlines of the document. Both first order and second order statistics are then calculated based on the scanned data. A first slope value being a function of the difference between a plurality of the first value and a second slope value being a function of the difference between a plurality of the second value are calculated. A document edge is detected using the first and second slope values.

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