Patent ID: 8145009
Filing Date: 2012-03-27
Classification: G06T,H04N

Abstract:
1. An apparatus for removing ringing noise, comprising: a representative value setting block dividing pixel data in one block including a plurality of pixel data into two groups through a modified K-means algorithm and setting a representative value in each of the groups; a parameter generator block calculating intervals and approaches between all the pixel data in the block and a pair of the representative values; and a correction block correcting an inputted pixel data value using the intervals and the approaches, wherein the intervals are distances between inputted pixel data and the representative value of the group to which the inputted pixel data belong, wherein the approaches are ratios of distances between inputted pixel data and the representative value of the group to which the inputted pixel data belong to distances between the inputted pixel data and the representative value of the group to which the inputted pixel data do not belong, and wherein the correction block performs a mathematical operation as represented by the following equations: wherein, R R Acc R