Image decoding apparatus
AssigneeIntercode Pte. Ltd.
InventorShin Ji Park
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Abstract
An image decoding device is provided which reconstructs an intra prediction mode of a current prediction unit using a prediction mode group indicator and a prediction mode index, determines a size of a sub block when intra prediction is performed on each sub block of the current prediction unit, and creates reference pixels and a prediction block per sub block. Therefore, by causing the first group to include modes having a high possibility of being equal to the prediction mode of the current block and determining the intra prediction mode group indicator and the prediction mode index, it is possible to reduce an amount of information of the intra prediction mode to be encoded. Also, by creating a prediction block very similar to the current block, the number of bits to be encoded and to be decoded are reduced.
Claims10
An image decoding device comprising:
- an intra prediction mode decoding module for reconstructing an intra prediction mode of a current prediction unit using a prediction mode group indicator and a prediction mode index;
- an intra prediction block size determining module for determining a size of a sub block when intra prediction is performed on each sub block of the current prediction unit;
- a reference pixel creating module for generating reference pixels when at least one reference pixel is not valid;
- and
- a prediction block creating module for creating a prediction block of each sub block using the intra prediction mode and the reference pixels,
- wherein prediction blocks of the sub blocks are generated using the intra prediction mode of the current prediction unit, and the size of the sub block is determined using information indicating a transform size.
(canceled)
Dependencies are inferred from the claim text.