Optics: image projectors – Miscellaneous
Reexamination Certificate
2007-04-20
2010-06-22
Luu, Thanh X (Department: 2878)
Optics: image projectors
Miscellaneous
C353S030000, C353S094000, C345S001300
Reexamination Certificate
active
07740361
ABSTRACT:
The present invention relates to projection systems where one or more projectors are utilized to project a video, a still image, or combinations thereof. More particularly, the present invention relates to methods of calibrating and operating such systems. According to one embodiment of the present invention, a method of operating an image display system is provided. According to the method, one or more image sensors acquire respective overlapping portions I1, I2of a projected image. Screen position coordinates for image fiducials in the first and second portions I1, I2of the projected image are identified and used to establish first and second sets of distance metrics D1, D2for the first and second portions of the projected image. A global point set is constructed from the first and second sets of distance metrics D1, D2. Global points within a region where the first and second portions I1, I2of the projected image overlap are derived from only one of the first and second sets of distance metrics D1, D2. In this manner, a first subset G1of the global point set will comprise fiducial positions derived from only one of the first and second sets of distance metrics D1, D2and a second subset G2of the global point set will comprise fiducial positions derived from the other of the first and second sets of distance metrics D1, D2. Alignment of the first and second subsets G1, G2of the global point set is optimized by adjusting fiducial positions in the global point set in a manner that at least partially accounts for differences between local positional data derived from the first and second sets of distance metrics D1, D2and global positional data of the fiducial positions in the global point set. Additional embodiments are disclosed and claimed.
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Jaynes Christopher O.
Webb Stephen B.
Dinsmore & Shohl LLP
Luu Thanh X
Mersive Technologies, Inc.
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