Modification of the normalized difference method for real-time optical tomography
CA 2481650 A1 · Owner: Barbour, Randall L. · Inventors: Pei, Yaling; Barbour, Randall L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Computation -saving techniques and stability-adding techniques provide for fast, accurate reconstructions of a time series of images involving large scale 3D problems, such as real-time image recovery in an optical tomography imaging system. A system equation for a target medium (116) such as a tissue is solved using a Normalized Difference Method (NDM) (250). Because of the inherent stability of the NDM solutions a weight matrix (W) of the system , equation can be provided for a given point in a time series (220) then reused , without recalculation at subsequent points. Further saving are achieved by decomposing W using singular value decomposition or direst matrix decomposition, …
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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 April 7, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 7, 2025.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.