Obstruction detection system
CA 2362326 A1 · Owner: Watson, Russell · Inventors: Watson, Russell; Woodhead, Ian; Burkitt, Dave
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides for a method of detecting objects in an area the , method including obtaining one or more images of the area using an edge , detection technique in such a way as to highlight substantially dominant linear features in the image(s), and determining if any dominant linear features intersect linear features defining the area. The method may also include detecting parallax in at least two images the parallax being produced , by the presence of 3-dimensional objects in the area.
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 February 11, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 11, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 11, 2022.
- 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.