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US 8,300,691 B2Granted
Video encoding method and apparatus and video decoding method and apparatus using residual resizing
AssigneeSamsung Electronics Co., Ltd.
InventorsTammy Lee, Woo-jin Han
Life of this patent
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Abstract
A video encoding method and apparatus and a video decoding method and apparatus are provided. The video encoding method encodes residual values included in a residual block of a current block after sub-sampling or down-sampling the residual values, thereby encoding and decoding the current block using a small number of residual values and thus improving the compression rate of video encoding.
Claims13
A video decoding method comprising:
- receiving a bitstream including data of a current block and extracting a residual block of the current block from the received bitstream;
- wherein the residual block includes sub-sampled residual values;
- reconstructing remaining residual values of the extracted residual block based on the sub-sampled residual values included in the extracted residual block;
- and
- reconstructing the current block based on the sub-sampled residual values and the reconstructed residual values.
2 more elements
A video decoding method comprising:
- receiving a bitstream including data of a current block and extracting a residual block of the current block from the received bitstream;
- wherein the residual block includes down-sampled residual values;
- performing up-sampling based on down-sampled residual values included in the extracted residual block;
- and
- reconstructing the current block based on the up-sampled residual values.
2 more elements
A video decoding apparatus comprising:
- a decoding unit which receives a bitstream including data of a current block and which extracts a residual block of the current block from the received bitstream;
- wherein the residual block includes sub-sampled residual values;
- a residue reconstruction unit which reconstructs remaining residual values of the extracted residual block based on sub-sampled residual values included in the extracted residual block;
- and
- a reconstruction unit which reconstructs the current block based on the sub-sampled residual values and the reconstructed residual values.
2 more elements
A video decoding apparatus comprising:
- a decoding unit which receives a bitstream including data of a current block and which extracts a residual block of the current block from the received bitstream;
- wherein the residual block includes down-sampled residual values;
- a residue reconstruction unit which performs up-sampling based on down-sampled residual values included in the extracted residual block;
- and
- a reconstruction unit which reconstructs the current block based on the up-sampled residual values.
2 more elements
Dependencies are inferred from the claim text.