Image analysis – Image enhancement or restoration – Artifact removal or suppression
Reexamination Certificate
2006-02-22
2008-12-30
Ishrat, Sherali (Department: 2624)
Image analysis
Image enhancement or restoration
Artifact removal or suppression
Reexamination Certificate
active
07471848
ABSTRACT:
A projection set of geodesic lines which are parallel with each other on a curved surface of a paper face is extracted from an image in which a paper face has been imaged by an image-pickup device, using the paper face contents as a clue; and also a projection set of ruling lines which form a ruled surface corresponding to the curved surface of the paper face is extracted from the projection set of geodesic lines. Then, the curved surface of the paper face is estimated from the projection set of the geodesic lines and ruling lines, and distortion of the image is corrected based on this curved surface of the paper face. If this is done, correspondence with various types of diverse distortions becomes possible, and distortion correction can be performed even when only one part of the paper face appears in the image.
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Fujimoto Katsuhito
Naoi Satoshi
Suwa Misako
Takebe Hiroaki
Fujitsu Limited
Greer Burns & Crain Ltd.
Ishrat Sherali
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