Method for detecting and/or determining characteristics related to remarkable points of an image
CA 2264903 A1 · Owner: Elf Exploration Production · Inventors: Keskes, Naamen; Baylou, Pierre; Guillon, Sebastien
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for detecting and/or determining characteristics related to remarkable points in an image characterised in that it consists in evaluating the local dip variability of a first point in the image relative to at least another point located in the proximity of said first point by computing the local anisotropy on said point gradient field said anisotropy being dependent on terms related to a dispersion of orientations and to the module of gradient vectors and at least one of said terms is weighted.
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 July 2, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 2, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 2, 2020.
- 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.