Patent ID: 9445126
Filing Date: 2016-09-13
CPC Classification: H04N

Claim Text:
1. A method of loop filtering of reconstructed video data during a video coding process, the method comprising: applying a one-dimensional (1D) switched filter to the video data in a first direction that is either horizontal or vertical, wherein the 1D switched filter comprises two or more sets of switched filter coefficients, wherein an index signaled in a coded bitstream identifies a selected set of switched filter coefficients from the two or more sets of switched filter coefficients; when the 1D switched filter is applied in the horizontal direction, applying a 1D adaptive filter to the video data in the vertical direction; and when the 1D switched filter is applied in the vertical direction, applying a 1D adaptive filter to the video data in the horizontal direction, wherein the 1D adaptive filter applied comprises a set of adaptive filter coefficients, wherein the set of adaptive filter coefficients is signaled in the coded bitstream as adaptive filter coefficients or as deltas relative to previous or known adaptive filter coefficients.