Document skew accommodation

Details Document skew accommodation Document skew accommodation

2006-11-07

2006-11-07

Johns, Andrew W. (Department: 2624)

Image analysis

Image transformation or preprocessing

Measuring image properties

C358S495000, C358S497000, C399S395000, C400S579000, C382S112000

Reexamination Certificate

active

07133573

ABSTRACT:
A method to be used within a document image capture device, such as a document scanner (10) of detecting and measuring the document skew (25) while the document is still entering the imaging area and then effecting a rotation of the camera to accommodate the document skew so that the resulting image taken is not skewed. This can be accomplished by one of several methods, such as rotating the entire camera, rotating only the sensor element, or rotating another element in the optical path such as a prism. Use of the methods incorporated in this invention does not require the document motion to be stopped to measure and accommodate skew or to take the image.

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