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. 14, 2010
Filed:
Apr. 06, 2006
Toshiyuki Shimizu, Tokyo, JP;
Yoshiki Ono, Tokyo, JP;
Naoyuki Fujiyama, Tokyo, JP;
Shuji Sotoda, Tokyo, JP;
Yoshiko Hatano, Tokyo, JP;
Toshiyuki Shimizu, Tokyo, JP;
Yoshiki Ono, Tokyo, JP;
Naoyuki Fujiyama, Tokyo, JP;
Shuji Sotoda, Tokyo, JP;
Yoshiko Hatano, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An image correction method can perform adaptive correction processing to a taken image by a simple construction in a short time, and includes the steps of: computing window region local difference values for a plurality of neighboring pixels, each of the window region local difference values being a difference value between image data of a notice pixel () in a difference value determination region () formed of a whole or a part of a screen area of an input image () and image data of a neighboring pixel in a window region () set around the notice pixel (), thereby determining a maximum local difference value which is a maximum value of the window region local difference values in each window region; determining a threshold value reflecting a characteristic of the input image on the basis of the maximum local difference value; producing adaptive filter coefficients for respective pixels of the input image by using the threshold value; and performing filter processing of the input image by using the adaptive filter coefficients.