Method and Apparatus for In-Loop Filtering

The method of Claim Error! Reference source not found., further comprising:

• storing said reconstructed line for line p0 in a line buffer;
• reading said reconstructed line for line p0 from said line buffer;
• and
• performing Intra prediction based on said reconstructed line for line p0 and coded data for the neighboring image unit below the current image unit to generate reconstructed video for the neighboring image unit below the current image unit.

An apparatus for in-loop processing of reconstructed video data, wherein the reconstructed video data is partitioned into image units, horizontal deblocking is applied to the reconstructed video data across vertical image-unit boundaries and then vertical deblocking operates on n pixels of horizontal-deblocked video data on each side of horizontal image-unit boundaries, and vertical filter parameters of the vertical deblocking are derived based on n horizontal-deblocked lines on each side of the horizontal image-unit boundaries, wherein n is a first integer, the apparatus comprising:

• means for receiving the reconstructed video data for a current image unit, wherein the reconstructed video data includes n reconstructed lines from line p0 to line pn−1 above a horizontal image-unit boundary and line p0 is closest to the horizontal image-unit boundary;
• means for applying the horizontal deblocking to at least one of said n reconstructed lines to generate at least one horizontal-deblocked line for line pn−1;
• and
• means for applying sample adaptive offset (SAO) processing on at least one horizontal-deblocked line for line pn based on the horizontal-deblocked line for line pn−1;
• and
• wherein the above steps are performed before a neighboring image unit below the current image unit arrives.