Methods and apparatus for selecting semantically significant images in a document image without decoding image content
CA 2077313 C · Owner: Halvorsen, Per-Kristian · Inventors: Bagley, Steven C.; Rao, Ramana B.; Halvorsen, Per-Kristian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for processing a document image, using a programmed general or special purpose computer, includes forming the image into image units and, at least one image unit classifier of at least one of the image units is determined, without decoding the content of the at least one of the image units. The classifier of the at least one of the image units is then compared with a classifier of another image unit. The classifier may be image unit length, width, location in the document font, typeface, cross-section, the number of ascenders the, number of descenders, the average pixel density the, length of the top line contour, the length of the base contour, the location of image …
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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 September 1, 1992 and granted February 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 1, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 1, 2014.
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