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:
Aug. 02, 2011
Filed:
Feb. 27, 2007
Applicants:
Zhigang Fan, Webster, NY (US);
Francis Tse, Rochester, NY (US);
John Christopher Cassidy, Fairport, NY (US);
Inventors:
Zhigang Fan, Webster, NY (US);
Francis Tse, Rochester, NY (US);
John Christopher Cassidy, Fairport, NY (US);
Assignee:
Xerox Corporation, Norwalk, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 9/46 (2006.01); G06K 9/00 (2006.01); G06K 9/40 (2006.01); H04N 11/20 (2006.01); H04N 7/01 (2006.01); H04N 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A light compression method that error diffuses image data provided with luminance and chrominance channels. During error diffusion, a higher number of bits are allocated to the luminance channel. A decompression method for the image data based on sigma filtering is also provided. By manipulating the bits in the luminance and chrominance color spaces, the image output quality may be increased in reconstructed images.