Method of detecting a significant change of scene
CA 2438860 A1 · Owner: Scyron Limited · Inventors: Mansfield, Richard Louis; Flowers, Nicholas John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A significant change of scene in a gradually changing scene is detected with the aid of a least one camera means (2) for capturing digital images of the scene. A current image (4) of the scene is formed together with a present weighted reference image (6) which is formed from a plurality of previous images (8) of the scene. Cell data is established based on the current image (4) and the present weighted reference image (6). The cell data is statistically analysed so as to be able to identify at least one difference corresponding to a significant change of scene. When identified an indication , of such significant change of scene is provided.
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 21, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 21, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2024.
- 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.