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:
Jul. 08, 2014
Filed:
May. 20, 2011
Kousei Sugimoto, Kawasaki, JP;
Kousei Sugimoto, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image processing apparatus includes: an unit that performs second-order differentiation on an inputted image signal, and outputs the result as an edge enhancement signal; an unit that calculates a first difference value in a form of an absolute value of a difference between pixel values of two first pixels; an unit that calculates a second difference value in a form of an absolute value of a difference between pixel values of two second pixels; an unit that multiplies the second difference value by a first value; an unit that subtracts the multiplication result from the first difference value, limits a lower-limit value of the result to 0, and outputs the result as an edge adjustment coefficient; an unit that corrects the edge enhancement signal through multiplication by the edge adjustment coefficient; and an unit that adds the corrected edge enhancement signal to the image signal.