| 摘要 |
<p>A scalable encoding scheme has at least one enhancement layer and at least one reference layer. For a unit of data of an enhancement layer to be encoded, a plurality of inter coding modes in which a residual is obtained from a temporal predictor are evaluated. In a first of these modes, the residual is predicted using information from a reference (base) layer, constituting an Inter-Layer mode. Fewer candidate predictor evaluations are performed for the first (inter layer) mode than for the other inter coding modes. Alternatively, a selection is made between a plurality of coding modes, including at least one basic coding mode in which a residual is obtained from a predictor obtained in the enhancement layer, and at least one first interlayer encoding mode in which said residual is predicted using information from the reference layer, wherein evaluation of said first coding mode is adaptively controlled according to the results of the basic mode evaluation. Coding parameters such as block partitioning, prediction mode, coding sub-mode, motion values, direction, and predictor values are determined for the basic mode(s) and used to adaptively control evaluation of the interlayer mode(s).</p> |
