Patent ID: 8634479

Claim:
A method of decoding a video signal with a video decoding apparatus, comprising: receiving, with the video decoding apparatus, the video signal; reconstructing, with the video decoding apparatus, a current picture; performing, with the video decoding apparatus, a deblocking-filtering on the reconstructed current picture; and performing, with the video decoding apparatus, an adaptive-filtering on the deblocking-filtered current picture, wherein the performing the adaptive-filtering comprises obtaining, with the video decoding apparatus, filter prediction information indicating whether filter coefficients of an N th adaptive filter is derived from filter coefficients of an (N−1) th adaptive filter; and deriving the filter coefficients of the N th adaptive filter using difference filter coefficients of the N th adaptive filter and prediction filter coefficients based on the filter prediction information, the prediction filter coefficients being from the filter coefficients of the (N−1) th adaptive filter, wherein N is a natural number and greater than 1.