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US 11,539,951 B2Granted
Method and device for picture encoding and decoding
AssigneeInterDigital VC Holdings, Inc.
InventorsKaram Naser, Fabrice Leleannec, Tangi Poirier
Life of this patent
Estimating the term…
Abstract
A decoding method is presented. a type of split of a block into transform units is first decoded. A transform is then determined for each transform unit of said block responsive to said type of split. Finally, decoded transform coefficients of said transform units are inverse transformed using the determined transforms.
Claims20
A decoding method comprising:
- decoding a type of split of a block into a plurality of sub-blocks;
- determining one or more transforms for sub-blocks of the plurality based on the type of split;
- and,
- inverse transforming decoded transform coefficients of the sub-blocks using the determined transforms;
- wherein determining one or more transforms for sub-blocks of the plurality based on the type of split comprises:
- decoding an information representative of a first horizontal transform for a first sub-block of the block and an information representative of a first vertical transform for a second sub-block of the block;
- and
- determining the one or more transforms for sub-blocks the plurality based on one or more of the first horizontal transform and the first vertical transform.
5 more elements
A decoding apparatus comprising one or more processors configured to perform at least:
- decoding a type of split of a block into a plurality of sub-blocks;
- determining one or more transforms for sub-blocks of the plurality based on the type of split;
- and,
- inverse transforming decoded transform coefficients of the sub-blocks using the determined transforms;
- wherein, for determining one or more transforms for sub-blocks of the plurality based on the type of split, the one or more processors are further configured to perform:
- determining and encoding an information representative of a first horizontal transform for a first sub-block of the block and an information representative of a first vertical transform for a second sub-block of the block;
- and
- determining one or more transforms for sub-blocks of the plurality based on one or more of the first horizontal transform and the first vertical transform.
5 more elements
An encoding method comprising:
- determining and encoding a type of split of a block into a plurality of sub-blocks;
- determining one or more transforms for sub-blocks of the plurality based on the type of split;
- and,
- transforming residuals of the sub-blocks using the determined transforms;
- wherein determining one or more transforms for sub-blocks of the plurality based on the type of split comprises:
- determining and encoding an information representative of a first horizontal transform for a first sub-block of the block and an information representative of a first vertical transform for a second sub-block of the block;
- and
- determining the one or more transforms for sub-blocks unit of the plurality based on one or more of the first horizontal transform and the first vertical transform.
5 more elements
An encoding apparatus comprising one or more processors configured to perform at least:
- determining and encoding a type of split of a block into a plurality of sub-blocks;
- determining one or more transforms for sub-blocks of the plurality based on the type of split;
- transforming residuals of the sub-blocks using the determined transforms;
- wherein, for determining one or more transform for sub-blocks of the block based on the type of split, the one or more processors are further configured to perform:
- determining and encoding an information representative of a first horizontal transform for a first sub-block of the block and an information representative of a first vertical transform for a second sub-block of the block;
- and
- determining one or more transforms for sub-blocks of the plurality based on one or more of the first horizontal transform and the first vertical transform.
4 more elements
Dependencies are inferred from the claim text.