Image analysis – Image transformation or preprocessing – Measuring image properties
Reexamination Certificate
2005-06-28
2005-06-28
Patel, Kanjibhai (Department: 2625)
Image analysis
Image transformation or preprocessing
Measuring image properties
C358S488000
Reexamination Certificate
active
06912325
ABSTRACT:
The registration and skew information of a document about to be scanned are detected prior to capturing the entire image of the document. Two sensors, a fixed distance apart, are used to detect the document skew. A third sensor is used to detect the edge position of the document. Paper sensors in the Automatic Document Feeder (ADF) are used to determine the document size. The data from the skew sensors are used to calculate the required skew correction angle and direction by which to rotate the image. The document edge position information together with skew information is used to determine the exact location of a corner of the document. This information is used to correct skewed image in real-time, during scanning the document.
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Christensen Larry L.
Jablonski Mark J.
Rombola Gregory
Wetzel Thomas J.
Eastman Kodak Company
Leffel Kevin L.
Patel Kanjibhai
Romanehik Richard A.
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