Method for aligning a modified document and an original...

Details Method for aligning a modified document and an original... Method for aligning a modified document and an original...

2011-03-15

2011-03-15

Chen, Wenpeng (Department: 2624)

Image analysis

Image transformation or preprocessing

Measuring image properties

C382S282000

Reexamination Certificate

active

07907794

ABSTRACT:
A method for aligning a modified document and an original document is provided according to an aspect of the present invention. The method includes a step of receiving a first bitmap representative of the modified document, including a first anchor. Additionally, a second bitmap representative of the original document including a second anchor is received. The method also includes the step of deriving a set of first vertex coordinates of the first anchor, and a set of second vertex coordinates of the second anchor. The method further includes the step of transforming the first bitmap to a common reference based upon the first set of vertex coordinates, and the step of transforming the second bitmap to the common reference based upon the second set of vertex coordinates.

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