Method of matching stereo images and method of measuring disparity between these images
CA 2174590 C · Owner: Matsushita Electric Industrial Co. Ltd. · Inventors: Onda, Katsumasa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the image pickup phase (A), right and left images are taken in through two image-pickup devices (S101 S102). Then, in, the next feature extraction phase (B) right and left images are, respectively subjected to feature extraction (S103 S104). Thereafter, in the succeeding matching phase (C) the extracted, features of right and left images are compared to check how they match with each other (step S105). More specifically in the, matching phase (C), a one-dimensional window is set this one-, dimensional window is shifted along the left image in accordance with a predetermined scanning rule so as to successively set overlapped one-dimensional windows, and a matching operation is performed …
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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 19, 1996 and granted February 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2018.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.