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:
Oct. 06, 2015
Filed:
Jan. 31, 2012
Yoshitaka Toyoda, Tokyo, JP;
Daisuke Suzuki, Tokyo, JP;
Koichi Yamashita, Tokyo, JP;
Takashi Ito, Tokyo, JP;
Narihiro Matoba, Tokyo, JP;
Yoshitaka Toyoda, Tokyo, JP;
Daisuke Suzuki, Tokyo, JP;
Koichi Yamashita, Tokyo, JP;
Takashi Ito, Tokyo, JP;
Narihiro Matoba, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
For each pixel in an image (Din), a contrast correlation value (CT) is detected for peripheral areas centered around the pixel to be corrected (), a contrast enhancement coefficient (Ken) is determined in accordance with the contrast correlation value (CT) (), and in accordance with the enhancement coefficient (Ken), local contrast is enhanced for each pixel and an intermediate image (D) is generated (). When performing noise reduction () by smoothing the intermediate image (D) in the time direction, the degree of noise reduction is controlled in accordance with a noise reduction coefficient (Knr) that is large where the enhancement coefficient (Ken) is large. With respect to a low-contrast image such as one captured under fog, haze or other poor weather conditions, the contrast in areas having reduced contrast is appropriately improved, and the noise that is enhanced in conjunction with contrast improvement is reduced, enabling a high quality image to be obtained.