Image encoding/decoding method and apparatus using intra-screen prediction
AssigneeIndustry-University Cooperation Foundation Hanyang University
InventorsJe Chang Jeong, Ki Baek Kim
Life of this patent
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Abstract
Disclosed is a decoding method which uses an intra-screen prediction. A decoding method which uses an intra prediction performed in a decoding apparatus comprises the steps of: receiving a bit stream; obtaining decoding information from the received bit stream; generating a prediction block for a current block to be decoded using the obtained decoding information; and restoring the current block by adding a residual block obtained from the bit stream and the prediction block. Accordingly, a compression ratio of an image can be improved.
Claims10
A decoding method which uses intra prediction performed in a decoding apparatus, the decoding method comprising the steps of:
- receiving a bitstream;
- obtaining decoding information from the received bitstream;
- generating a prediction block for a current block to be decoded, by using the obtained decoding information;
- and
- restoring the current block by adding a residual block obtained from the bitstream to the prediction block,
- wherein generating the prediction block comprises:
- predicting a pixel of a first region belonging to the current block, by using at least one restored pixel of a neighboring block adjacent to the current block;
- and
- predicting a pixel of a second region belonging to the current block, by using the predicted pixel of the first region and the restored pixel of the neighboring block, and
- wherein the first region includes only at least one pixel of even-numbered pixel lines within the current block, and the second region includes at least one pixel of odd-numbered pixel lines within the current block.
A decoding apparatus using intra prediction, comprising:
- at least one processor;
- and
- a memory in which commands for instructing the at least one processor to perform at least one operation are stored,
- wherein the at least one operation includes:
- receiving a bitstream;
- obtaining decoding information from the received bitstream;
- generating a prediction block for a current block to be decoded using the obtained decoding information;
- and
- restoring the current block by adding a residual block obtained from the bitstream to the prediction block,
- wherein generating the prediction block comprising:
- predicting a pixel of a first region belonging to the current block, by using at least one restored pixel of a neighboring block adjacent to the current block;
- and
- predicting a pixel of a second region belonging to the current block, by using the predicted pixel of the first region and the restored pixel of the neighboring block;
- and
- wherein the first region includes only at least one pixel of even-numbered pixel lines within the current block, and the second region includes at least one pixel of odd-numbered pixel lines within the current block.
Dependencies are inferred from the claim text.