Method of processing image data
CA 1310741 C · Owner: Hitachi, Ltd. · Inventors: Kodaira, Takatoshi; Fujiwara, Kazunori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A method of processing tonal (gray scale) image data uses spatial filtering to emphasize the contour and to eliminate noise. Unit spatial filters having a relatively small area of about 3 x 3 pixels are used and arranged arbitrarily in the portion requiring the image processing, to construct a spatial filter having a predetermined shape. Each of the unit spatial filters of small area, contained in the spatial filter thus constructed is, subjected to the image processing, and the output results are shifted and added, whereby to obtain the output result of the spatial filter as a whole. The present method can also be applied to the template matching technique. The result is a …
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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
- Granted November 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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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.