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:
Sep. 08, 2009
Filed:
Apr. 22, 2005
Applicant:
Dean Andrew Pulsifer, Lexington, KY (US);
Inventor:
Dean Andrew Pulsifer, Lexington, KY (US);
Assignee:
Lexmark International, Inc., Lexington, KY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 1/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for enhancing an image includes generating a luminance histogram for the image; generating a derivative histogram by taking a first derivative of the luminance histogram; searching for a plurality of black peaks and searching for a plurality of white peaks using the derivative histogram; and performing luminance scaling of the image between one black peak of the plurality of black peaks and one white peak of the plurality of white peaks.
Pulsifer, Dean. (2009). Method and system for enhancing an image using luminance scaling (U.S. Patent No. 7586653). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7586653
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