Image processing apparatus and method, and image reading apparatus
CA 2112735 C · Owner: Utagawa, Tsutomu · Inventors: Tanioka, Hiroshi; Yoshinaga, Kazuo; Utagawa, Tsutomu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An object of the present invention is to provide an image processing apparatus and an image processing method both off offering a high-precision and general-purpose capability of identifying an image and performing appropriate processing depending on whether identification is effected, In the image processing apparatus and image processing method, image data is detected in visible and invisible light reflected from each of a target pixel and surrounding pixels. Based on the image data detected in visible and invisible light a, specific pattern is identified. The specific pattern appears substantially the same in color as a surrounding area under visible light but different in …
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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 31, 1993 and granted April 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 31, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 31, 2015.
- 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
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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.