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:
Feb. 17, 2009
Filed:
Dec. 08, 2005
Peter D. Mccandlish, Rochester, NY (US);
Ramesh Nagarajan, Pittsford, NY (US);
Peter D. McCandlish, Rochester, NY (US);
Ramesh Nagarajan, Pittsford, NY (US);
Xerox Corporation, Norwalk, CT (US);
Abstract
A method is described to match an original binary image with the dynamic range of a desired target document. The original binary image is restored first to contone and a histogram of the contone image is processed to generate a Tone Reproduction Curve (TRC) for the contone image with improved dynamic range. The histogram processing includes determining a histogram of the contone image, and generating the TRC based on matching the determined histogram with a target histogram profile. This helps in matching outputs from legacy devices to a desired quality.