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US 2013/0259128 A1Published application
Method and apparatus for encoding/decoding images to minimize redundancy of intra-prediction mode
AssigneeSK Telecom Co., Ltd.
InventorsJinhan Song, Jeongyeon Lim, Kibaek Kim, Jechang Jeong
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Abstract
A video encoding apparatus encodes intra-prediction mode information of the current block by excluding information on overlapping or unnecessary intra-prediction modes from a candidate mode group and/or based on whether predicted values of intra-prediction modes of at least a preset number of subblocks are matched with actual intra-prediction modes.
Claims19
1-42. (canceled)
A video encoding apparatus, comprising:
- an intra-prediction encoder configured to encode a current block by intra-predicting the current block by using pixels of neighboring blocks adjacent to the current block;
- and
- a prediction mode encoder configured to encode intra-prediction mode information of the current block,
- wherein, when among the neighboring blocks adjacent to the current block there is an absent neighboring block which is not available for an intra-prediction mode, the prediction mode encoder is configured to encode the intra-prediction mode information of the current block by excluding the intra-prediction mode using a pixel of the absent neighboring block from a candidate mode group.
1 more element
A video encoding apparatus, comprising:
- an intra-prediction encoder configured to intra-prediction encode subblocks of a current block by using pixels of neighboring blocks adjacent to the subblocks;
- and
- a prediction mode encoder configured to encode intra-prediction mode information of the current block, the intra-prediction mode information including a prediction mode single coding flag indicating whether predicted values of intra-prediction modes of at least a preset number of subblocks in the current block are matched with actual intra-prediction modes or not.
A video decoding apparatus, comprising:
- a prediction mode decoder configured to exclude, when among neighboring blocks adjacent to a current block there is an absent neighboring block which is not available for an intra-prediction mode, the intra-prediction mode using a pixel of the absent neighboring block from a candidate mode group so as to reconstruct information on one or more intra-prediction modes of the current block from a bitstream;
- and
- an intra-prediction decoder configured to generate a predicted block of the current block, by using the reconstructed one or more intra-prediction modes, for reconstructing the current block.
A video decoding apparatus, comprising:
- a prediction mode decoder configured to
- decode information on intra-prediction modes of subblocks of a current block to be reconstructed from a bitstream, and
- reconstruct the intra-prediction modes based on a prediction mode single coding flag included in the information on the intra-prediction modes, the single coding flag indicating whether predicted values of the intra-prediction modes of at least a preset number of subblocks are matched with actual intra-prediction modes or not;
- and
- an intra-prediction decoder configured to generate a predicted block of the current block, by using the reconstructed intra-prediction modes, for reconstructing the current block.
2 more elements
A video decoding method, the method performed by a video decoding apparatus and comprising:
- excluding, when among neighboring blocks adjacent to a current block there is an absent neighboring block which is not available for an intra-prediction mode, the intra-prediction mode using a pixel of the absent neighboring block from a candidate mode group so as to reconstruct information on one or more intra-prediction modes of the current block from a bitstream;
- generating a predicted block of the current block by using the reconstructed one or more intra-prediction modes;
- and
- reconstructing the current block by using the predicted block.
1 more element
A video decoding method, the method performed by a video decoding apparatus and comprising:
- decoding information on intra-prediction modes of subblocks of a current block to be reconstructed from a bitstream;
- reconstructing the intra-prediction modes based on a prediction mode single coding flag included in the information on the intra-prediction modes, the single coding flag indicating whether predicted values of the intra-prediction modes of at least a preset number of subblocks are matched with actual intra-prediction modes or not;
- generating a predicted block of the current block by using the reconstructed intra-prediction modes;
- and
- reconstructing the current block by using the predicted block.
2 more elements
Dependencies are inferred from the claim text.