Image analysis – Image transformation or preprocessing – Measuring image properties
Reexamination Certificate
2006-04-11
2006-04-11
Couso, Yon J. (Department: 2625)
Image analysis
Image transformation or preprocessing
Measuring image properties
C382S296000
Reexamination Certificate
active
07027666
ABSTRACT:
A method for determining skew angle (5) and location of a document in an over-scanned digital image is disclosed. A document is scanned to capture a gray scale image. The outline pixel (1) of a document from the captured gray scale image are connected (2). An initial angle is set at zero and a x-minimum, y-minimum, x-maximum, and y-maximum of the polygon are determined (3). A rectangular boundary (4) area based on the x-minimum, y-minimum, x-maximum, and y-maximum is calculated and recorded. The angle is recorded and the polygon is rotated z-degree. The process is repeated and a minimum boundary area is selected. An angle corresponding to the minimum boundary is the skew angle of the document.
REFERENCES:
patent: 5452374 (1995-09-01), Cullen et al.
patent: 5818976 (1998-10-01), Pasco et al.
patent: 5974199 (1999-10-01), Lee et al.
patent: 6433896 (2002-08-01), Ueda et al.
patent: 198 58 968 (1999-07-01), None
patent: 1 184 808 (2002-03-01), None
Nakano, Y, et al, “Algorithm for the Skew Normalization of Document image”, Pattern Recognition, 1990, Proceedings, 10thInternational Conference on vol. II, Jun. 16-21, 1990, pp. 8-13, vol. 2.
Safabakhsh, R, et al, “Document Skew Detection using Minimum-Area Bounding Rectangle”, Information Technology: Coding and Computing, 2000, Proceedings on Mar. 27-29, 2000, pp. 253-258.
Lee Yongchun
Morgan Thomas J.
Rudak Peter
Blish Nelson Adrian
Couso Yon J.
Eastman Kodak Company
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