Image analysis – Image enhancement or restoration – Artifact removal or suppression
Reexamination Certificate
2008-04-01
2008-04-01
Bella, Matthew C. (Department: 2624)
Image analysis
Image enhancement or restoration
Artifact removal or suppression
C348S746000, C353S070000
Reexamination Certificate
active
10166692
ABSTRACT:
A system and method for correcting distortion in projected images caused by the projection of an input image by a projector lens onto a projection screen having a surface that is not orthogonal to the projection axis of the projector. Projection parameters including the focal length of the projector lens and the angles that represent the pan, tilt and roll angle of the projector are obtained. Then the projected area and the best viewable rectangular area that fits within said projected area is determined. The distortion is then characterized by using a distortion transformation which corresponds to the transformation that exists between the vertices of the best viewable rectangular area and the corresponding vertices of the projected area. Finally, the distortion transformation is inverted and applied to input image to obtain a distortion free projected image.
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(1) Notification of Transmittal of the International Search Report or the Declaration.
(2) International Search Report.
(3) Written Opinion of the International Search Authority.
(4) International Preliminary Examination Report.
Karuta Bonaventure
Lee Louie
Bella Matthew C.
Rosario Dennis
Silicon Optix Inc.
Sughrue & Mion, PLLC
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