Automated video imagery database generation using photogrammetry
CA 2058877 A1 · Owner: Hughes Simulation Systems, Inc. · Inventors: Plunk, Gerald W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for converting forward looking video or motion picture imagery into a downlooking database suitable for use in an image generation system to generate realtime perspective images for simulation purposes. A digital video camera photographs a sequence of forward looking frames along a course including several known groundcontrol points. Digital data from the digital video camera is read into a computer. The initial position and the position of ground control points is read into the computer. A Kalman filter technique provides continuous estimates of exact camera location in x y, z coordinates, and in roll, pitch and yaw orientation. A correlation filter determines corresponding pixels …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed January 7, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 7, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.