Fiducial detection system
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United States of America Patent
Stats
-
Jun 12, 2007
Grant Date -
Feb 12, 2004
app pub date -
Aug 9, 2002
filing date -
Aug 9, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A new fiducial design allows having thousands of different codes. These fiducials are printed on a standard black-and-white (or color) printer and easily could be mounted on a walls, ceiling and objects in a room. The design includes 'solid' outside mono-color ring and 2-D dense inside coding scheme. Image processing algorithms are implemented in Smart Camera with a built-in DSP to run all required image-processing tasks. A tracking system implementation includes an inertial measurement unit and one outward-looking wide-angle Smart Camera with possible extensions to number of stationary inward-looking cameras. The system operates in various real-world lighting conditions without any user intervention due to homomorphic image processing processes for extracting fiducials in the presence of very non-uniform lighting.
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Family
International Classification(s)
Cited Art Landscape
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