| 摘要 |
A flag parameter in a digital image decoding is calculated. For a macroblock consisting of MxN blocks, a first operation is performed on M block along a first edge to obtain M first parameters, and a second operation is performed on N blocks along a second edge to obtain N second parameters. The first and second parameters are stored into corresponding locations in a first and a second buffer array. Then a flag parameter corresponding to a given block is calculated according to corresponding values stored in the first and second buffer arrays. Calculation for all of the MxN blocks is performed in the order that neighboring left and upper blocks next to the give block is processed prior to the given block.
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