Image analysis – Applications
Reexamination Certificate
2007-09-11
2007-09-11
Johns, Andrew W. (Department: 2624)
Image analysis
Applications
C382S177000, C358S003280
Reexamination Certificate
active
10727637
ABSTRACT:
An apparatus for embedding a digital watermark in a document image detects circumscribing outer shapes of characters in the document image and sets a plurality of reference lines that extend in the column direction and are spaced apart in the row direction by a basic pitch. The outer shapes include a first outer shape, a second outer shape that neighbors the first outer shape, and a third outer shape that neighbors the second outer shape, and the reference lines include a first reference line located between the first outer shape and the second outer shape, and a second reference line located between the second outer shape and the third outer shape. Control is performed for at least one of the second and third outer shapes so that a distance between the first reference line and an edge of the second outer shape is different from a distance between the second reference line and an edge of the third outer shape, in accordance with digital watermark information to be embedded.
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Eguchi Takami
Iwamura Keiichi
Kaneda Kitahiro
Tamaru Jun
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Johns Andrew W.
Mackowey Anthony
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