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. 17, 2006
Filed:
Jan. 14, 2003
Joel Jung, Guyancourt, FR;
Joel Jung, Guyancourt, FR;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The present invention relates to a method of processing digital images comprising pixel blocks, said method comprising a step of detecting blocking artifacts () between two adjacent blocks (Bj,bk), and a step of filtering () the pair of adjacent blocks. The method according to the invention further comprises a filter decision step () based on a comparison between luminance values of the pixels of the two adjacent blocks and a reference function representing a difference of minimum luminance values that can be seen by an observer as a function of an average luminance area of the image in order to determine whether a difference of luminance between the blocks is either or not visible to an observer.