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US 10,257,522 B2Granted
Image decoding device, image decoding method, image encoding device, and image encoding method
AssigneeSony Corporation
InventorKazushi Sato
Life of this patent
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Abstract
Provided is an image decoding device including an acquisition section configured to acquire a first parameter indicating which tile is a region-of-interest tile from an encoded stream encoded by partitioning an image into a plurality of tiles, and a decoding section configured to decode at least one of the region-of-interest tile and a non-region-of-interest tile of the image based on the first parameter acquired by the acquisition section.
Claims19
An image decoding device comprising:
- circuitry configured to
- acquire a first parameter indicating a specific tile from an encoded stream encoded by partitioning a target image into a plurality of tiles, and a second parameter relating to whether or not a pixel of a non-specific tile is used as a reference pixel in the specific tile,
- perform inter prediction in the specific tile of the target image in which the pixel in the non-specific tile of a reference image is prohibited from being used as the reference pixel based on the second parameter,
- decode the encoded stream based on an inter prediction image generated by performing inter prediction, the encoded stream being a stream of an enhancement layer in which image data of the specific tile is omitted to generate image data of the non-specific tile, and
- decode a stream of a base layer to generate the image data of the specific tile.
2 more elements
An image decoding method comprising:
- acquiring a first parameter indicating a specific tile from an encoded stream encoded by partitioning a target image into a plurality of tiles, and a second parameter relating to whether or not a pixel of a non-specific tile is used as a reference pixel in the specific tile;
- performing, via circuitry, inter prediction in the specific tile of the target image in which the pixel in the non-specific tile of a reference image is prohibited from being used as the reference pixel based on the second parameter;
- decoding the encoded stream based on an inter prediction image generated by performing inter prediction, the encoded stream being a stream of an enhancement layer in which image data of the specific tile is omitted to generate image data of the non-specific tile, and
- decoding a stream of a base layer to generate the image data of the specific tile.
1 more element
An image encoding device comprising:
- circuitry configured to
- partition a target image into a plurality of tiles including a specific tile,
- perform inter prediction in the specific tile of the target image in which a pixel in a non-specific tile of a reference image is prohibited from being used as a reference pixel based on a second parameter, the second parameter relating to whether or not the pixel of the non-specific tile is used as the reference pixel in the specific tile,
- insert a first parameter indicating the specific tile into an encoded stream generated by encoding the target image for each of the tiles, the encoded stream being a stream of an enhancement layer in which image data of the specific tile is omitted to generate image data of the non-specific tile, and
- encode a stream of a base layer to generate the image data of the specific tile.
2 more elements
An image encoding method comprising:
- partitioning a target image into a plurality of tiles including a specific tile;
- performing, via circuitry, inter prediction in the specific tile of the target image in which a pixel in a non-specific tile of a reference image is prohibited from being used as a reference pixel and a pixel in the specific tile of the reference image is permitted to be used as the reference pixel based on a second parameter, the second parameter relating to whether or not the pixel of the non-specific tile is used as the reference pixel in the specific tile;
- and
- inserting a first parameter indicating the specific tile into an encoded stream generated by encoding the target image for each of the tiles, the encoded stream being a stream of an enhancement layer in which image data of the specific tile is omitted to generate image data of the non-specific tile;
- and
- encoding a stream of a base layer to generate the image data of the specific tile.
3 more elements
Dependencies are inferred from the claim text.