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:
Jun. 23, 2009
Filed:
Aug. 05, 2004
Ruth Bergman, Haifa, IL;
Gitit Ruckenstein, Haifa, IL;
Doron Shaked, Haifa, IL;
Renato Keshet, Haifa, IL;
Ruth Bergman, Haifa, IL;
Gitit Ruckenstein, Haifa, IL;
Doron Shaked, Haifa, IL;
Renato Keshet, Haifa, IL;
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
In one aspect, an image is quantized by assigning sub-ranges of pixel values in the image to respective quantization levels. The quantized image is encoded based at least in part on a mask lookup table assigning index values to respective masks, wherein each mask corresponds to a respective spatial distribution of the quantization levels. In another aspect, a code corresponding to an encoded image with pixel values quantized to respective quantization levels is received. The code is decoded based at least in part on a mask lookup table assigning index values to respective masks, wherein each mask corresponds to a respective spatial distribution of the quantization levels.