NEIGHBOR TILE BUFFERING FOR DEBLOCK FILTERING ACROSS TILE BOUNDARIES
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United States of America Patent
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Issued Date -
Jun 9, 2016
app pub date -
Dec 9, 2014
filing date -
Dec 9, 2014
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status (Latency Note)
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Abstract
Deblock filtering at the tile boundaries of a tiled picture use a tile neighbor buffer in addition to top neighbor buffer left neighbor buffers. The tile neighbor buffer buffers pixel data from the bottom right corner of the left-diagonal tile. When the top rows of pixels of a tile are being filtered, the top neighbor buffer stores the bottom rows of pixels of the tile above. As the tiles are processed in raster order, some of the pixels in the top neighbor buffer are the pixels in the bottom right corner of the left-diagonal tile of the next tile to be filtered. The portion of the top neighbor buffer storing pixel data representing this bottom right corner is copied directly from the top neighbor buffer to the tile neighbor buffer for further filtering when processing the next tile.
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