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US 7,352,913 B2Granted
System and method for correcting multiple axis displacement distortion
AssigneeSilicon Optix Inc.
InventorsBonaventure Karuta, Louie Lee
Life of this patent
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AssigneeSilicon Optix Inc.
InventorsBonaventure Karuta, Louie Lee
Estimating the term…
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.
A method for projecting an image onto a viewing surface, wherein the relative orientation of projection axis and the normal direction associated with the viewing surface is characterized by simultaneous presence of at least two of pan, tilt, and roll angles, said method comprising:
A projection system adapted to project an image onto a viewing surface, wherein the relative orientation of projection axis and the normal direction of the viewing surface is characterized by simultaneous presence of at least two of pan, tilt, and roll angles, said system comprising:
Dependencies are inferred from the claim text.