Noise reduction in a digital image by factorial analysis of correspondences
CA 2469915 A1 · Owner: Hannequin, Pascal · Inventors: Hannequin, Pascal
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 which consists in processing in a central unit (4) the digitized image (1) obtained by sensing noisy radiation. The image (1) is considered as a table of pixel intensity values which is broken down into p elementary tables of n pixels so as to subsequently order them into a processing table with p lines of n columns; applying to said table a factorial analysis method to deduce therefrom the n significant factors; then reconstituting a reconstructed processing table taking into account the most significant factors and in deducing therefrom a reconstituted image wherein the high-frequency noise is reduced maintaining a satisfactory contrast.
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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 December 12, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 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.