This architecture supports two separate filtering modes, which are selected by pixel behavior around the block boundary.
该结构有两个不同的滤波模式，并通过块缘象素信息来选择采用何种模式。
In each mode, proper one-dimensional filtering operations are performed across the block boundary along the horizontal and vertical directions, respectively.
在每一个模式下，分别对水平和竖直边沿进行一维滤波操作。
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