| 摘要 |
Common video standards use de-blocking filtering for reducing blocking distortion between the different blocks or macroblocks of a picture. De-blocking filtering is done horizontally within a line and vertically over two lines, or four lines for MBAFF mode. A method for performing de-blocking filtering of a video picture comprises steps of reading data of a current line into an internal memory, performing horizontal filtering on the current line data, writing the horizontally filtered current line data to an external memory, reading data of a next line into the internal memory, reading horizontally filtered data of the current line from the external memory into the internal memory, performing vertical filtering on the horizontally filtered current line data and the next line data, and writing the vertically and horizontally filtered current line data to the external memory. The invention is especially advantageous for HD resolution processing. |
