The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 2010
Filed:
Dec. 22, 2006
Krzysztof Koziarz, Denistone, AU;
Krzysztof Koziarz, Denistone, AU;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image compression algorithm () and complementary decompression algorithm () are disclosed. The compression algorithm () maintains a set of reference points (and), each reference point having a predetermined spatial relationship with a current pixel (). An adjustment along scanlines of the reference points is determined. Each of the reference points (and) is then adjusted by the determined adjustment. A search for a match between one of the strings of consecutive previously scanned pixels including one of the adjusted reference pixels and the string of consecutive pixels including the current pixel is then conducted, and if a match is found, then an identifier for the reference pixel included in the match and the length of the matching string of consecutive pixels are encoded to an output stream.