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:
Aug. 21, 2018
Filed:
Sep. 16, 2009
Chunhong Zhou, Oceanside, CA (US);
Arup Roy, Valencia, CA (US);
Kelly H. Mcclure, Simi Valley, CA (US);
Chunhong Zhou, Oceanside, CA (US);
Arup Roy, Valencia, CA (US);
Kelly H. McClure, Simi Valley, CA (US);
Second Sight Medical Products, Inc., Sylmar, CA (US);
Abstract
Digital image filters and related methods for image contrast enhancement are disclosed. According to one aspect of the method, an invariant brightness level is initially determined. For each pixel of an input image, the invariant brightness level is subtracted from the input brightness of the pixel. The resulting value is multiplied with a contrast adjustment constant. After that, the invariant brightness level is added. Further aspects of the method can involve histogram equalization.