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. 22, 2009
Filed:
Mar. 04, 2004
Tasuku Sugimoto, Nagoya, JP;
Tasuku Sugimoto, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
An image processing device emphasizes edges of an image without changing the image. A differential operation is performed on pixel values of a subject pixel and surrounding pixels to calculate a vector magnitude and a vector direction of a differential vector. Then, a new pixel value of the subject pixel is calculated based on the original pixel value of the subject pixel, a value determined dependently on the vector magnitude, and a pixel value of an adjustment pixel. The adjustment pixel is one of a first candidate surrounding pixel positioned in the vector direction and a second candidate surrounding pixel positioned in an opposite vector direction, and has a pixel value closer to the original pixel value of the subject pixel than the other candidate surrounding pixel.