METHOD AND APPARATUS OF HEVC DE-BLOCKING FILTER

摘要

A method of de-blocking filtering a processed video is provided. The processed video includes a plurality of blocks and each block includes a plurality of sub-blocks. A current block of the plurality of blocks includes vertical edges and horizontal edges. The processed video further includes a set of control parameters and reconstructed pixels corresponding to the current block. A boundary strength index is estimated at the vertical edges and at the horizontal edges of the current block. The set of control parameters, the reconstructed pixels corresponding to the current block and partially filtered pixels corresponding to a set of adjacent sub-blocks are loaded. The vertical edges and the horizontal edges of the current block are filtered based on the boundary strength index and the set of control parameters such that a vertical edge of the current block is filtered before filtering at least one horizontal edge of the current block.

主权项

1. A de-blocking filter comprising:
a boundary strength black configured to receive a set of control parameters associated with a processed video and configured to estimate a boundary strength index at vertical edges and at horizontal edges of a current block of a plurality of blocks, the processed video comprises the plurality of blocks and each block comprises a plurality of sub-blocks; a reconstructed memory coupled to the boundary strength block and configured to receive the processed video and configured to store reconstructed pixels corresponding to the current block received in the processed video; a de-block controller coupled to the boundary strength block and the reconstructed memory; a work memory coupled to the de-block controller and configured to store partially filtered pixels corresponding to a set of adjacent sub-blocks, the de-block controller configured to load the set of control parameters, the boundary strength index at the vertical edges and the horizontal edges of the current block and the reconstructed pixels corresponding to the current block in the work memory; and a de-blocking filter engine comprising a plurality of core engines, the de-blocking filter engine configured to filter the vertical edges and the horizontal edges of the current block based on the boundary strength index and the set of control parameters, wherein a vertical edge of the current block is filtered before filtering at least one horizontal edge of the current block.