Method and system for measurement of the duration an area is included in an image stream
CA 2454297 C · Owner: Carmichael, Norman S. · Inventors: Hayden, Charles H. Jr.; Carmichael, Norman S.; Overton, Kenneth J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method for calculation of the duration a target area included within an image stream utilizes a three-dimensional model of at least one target area within a site. A counter is incremented during periods for , example on a frame-by-frame basis when the target area is included in the image stream. An occlusion parameter is calculated for adjusting the calculated duration that the target area is included within the image stream. The occlusion parameter facilitates accounting for variations in a target area obstruction and is used for making adjustments to a counter so that a count indicative of a duration reflects variations in obstructions of the target area. A foreground …
Read the whole patent
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 August 16, 2001 and granted May 22, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 16, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 16, 2023.
- 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.