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. 22, 2004
Filed:
Feb. 25, 2000
Systems and methods to determine a contrast and a brightness adjusted system tone reproduction curve
Charles E. Farnung, Irondequoit, NY (US);
Ramesh Nagarajan, Fairport, NY (US);
Francis Tse, Rochester, NY (US);
Julie A. Fisher, Rochester, NY (US);
Regina M. Loverde, Webster, NY (US);
Ralph H. Huedepohl, Bloomfield, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
Contrast and brightness adjustments can be made to a system tone reproduction curve. These contrast and brightness adjustments can be made, for example, by user, via a user input device, or alternatively, automatically detected, based on an image analysis routine. By determining one or more generic tone reproduction curves, and interpolating these tone reproduction curves with the system tone reproduction curve, a new, adjusted tone reproduction curve is produced. This allows for a determination of the adjusted system tone reproduction curve as opposed to calculating and restoring the families of system tone reproduction curves adjusted for all the possible combinations of contrast and brightness.