| 摘要 |
An apparatus comprising a processor configured to receive a current block of an image, select an optimal prediction mode of a plurality of prediction modes for the current block, wherein the selected prediction mode corresponds to a selected one of a plurality of group-numbers and a selected one of a plurality of index-numbers, predict one of the plurality of group-numbers based on a first known group-number and a second known group-number, wherein the predicted group-number is predicted independent from any known index-numbers, clear a first flag when the predicted group-number matches the selected group-number, and set the first flag and encode the selected group-number into a coded data stream when the predicted group-number does not match the selected group-number, wherein the first flag is located in an overhead of the coded data stream.
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