Methods of suppressing ringing artifact of decompressed images

Details Methods of suppressing ringing artifact of decompressed images Methods of suppressing ringing artifact of decompressed images

2006-02-13

2008-08-26

Couso, Yon (Department: 2624)

Image analysis

Image enhancement or restoration

Artifact removal or suppression

C382S264000

Reexamination Certificate

active

07418154

ABSTRACT:
A suppression method that provides adaptive (i.e., selective) processing of an input picture to generate an enhanced output picture with ringing-like areas of the input picture suppressed. For each such window in the input picture, if the window is detected as around a ringing-like area in the picture, then the output pixel for the position of the window comprises the low-pass filtered (i.e., smoothed) pixel in the input picture. However, if the window is not detected as around a ringing-like area (i.e., the window is around a non-ringing-like area) then the output pixel for the position of the window comprises essentially the unchanged window in the input picture. As a result no blurring is introduced into the input picture in areas where ringing-like patterns are not detected. Therefore, the output picture includes portions of the input picture in which ringing-like patterns were not detected, and portions of the input picture with suppressed ringing-like patterns where detected. The output picture is an enhanced version of the input picture with suppressed (i.e., smoothed) ringing-like patterns.

REFERENCES:
patent: 5933540 (1999-08-01), Lakshminarayanan et al.
patent: 6795588 (2004-09-01), Nio et al.
patent: 2002/0131647 (2002-09-01), Matthews
patent: 2004/0076338 (2004-04-01), Kriss
patent: 2004/0120597 (2004-06-01), Le Dinh
patent: 2005/0031223 (2005-02-01), Kusakabe et al.

Affiliated with

Also associated with

Rating

Methods of suppressing ringing artifact of decompressed images does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods of suppressing ringing artifact of decompressed images, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods of suppressing ringing artifact of decompressed images will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4002802