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US 11,706,446 B2Granted
Method and device for video signal processing
AssigneeKt Corporation
InventorBae Keun Lee
Life of this patent
Estimating the term…
Abstract
An image decoding method according to the present invention may comprise determining an intra prediction mode of a current block, deriving reference samples of the current block, and obtaining a prediction sample of the current block using at least one of the reference samples.
Claims5
A method of decoding an image, comprising:
- receiving a bitstream including information on the image;
- dividing, based on a quad division, a first coding block in the image into four second coding blocks;
- and
- dividing, based on a triple division, a second coding block into three third coding blocks,
- wherein one of the three third coding blocks has a size greater than a size of the other two of the three third coding blocks,
- wherein the other two of the three third coding blocks have the same size,
- wherein a size of the one of the three third coding blocks is twice a size of the other two of the three third coding blocks,
- wherein the one of the three third coding blocks is located between the other two of the three third coding blocks,
- wherein at least one of the three third coding blocks is further divided into two fourth coding blocks,
- wherein, in response to a case where a fourth coding block is coded in an intra mode, the fourth coding block is further divided, based on first information signaled via the bitstream, into a plurality of sub-blocks, and
- wherein the first information indicates whether a sub-block-based intra prediction is performed for the fourth coding block.
8 more elements
A method of encoding an image, comprising:
- dividing, based on a quad division, a first coding block in the image into four second coding blocks;
- and
- dividing, based on a triple division, a second coding block into three third coding blocks,
- wherein one of the three third coding blocks has a size greater than a size of the other two of the three third coding blocks,
- wherein the other two of the three third coding blocks have the same size,
- wherein a size of the one of the three third coding blocks is twice a size of the other two of the three third coding blocks,
- wherein the one of the three third coding blocks is located between the other two of the three third coding blocks,
- wherein at least one of the three third coding blocks is further divided into two fourth coding blocks,
- wherein, in response to a case where a fourth coding block is coded in an intra mode and a sub-block based intra prediction is applied to the fourth coding block, the fourth coding block is further divided into a plurality of sub-blocks, and
- wherein first information indicating whether the sub-block-based intra prediction is applied to the fourth coding block or not is encoded into a bitstream.
7 more elements
A non-transitory computer-readable medium for storing a compressed image signal, comprising:
- a data stream including the compressed image signal,
- wherein a first coding block in an image is divided, based on a quad division, into four second coding blocks,
- wherein a second coding block is divided, based on a triple division, into three third coding blocks,
- wherein one of the three third coding blocks has a size greater than a size of the other two of the three third coding blocks,
- wherein the other two of the three third coding blocks have the same size,
- wherein a size of the one of the three third coding blocks is twice a size of the other two of the three third coding blocks,
- wherein the one of the three third coding blocks is located between the other two of the three third coding blocks,
- wherein at least one of the three third coding blocks is further divided into two fourth coding blocks,
- wherein, in response to a case where a fourth coding block is coded in an intra mode and a sub-block based intra prediction is applied to the fourth coding block, the fourth coding block is further divided into a plurality of sub-blocks, and
- wherein first information indicating whether the sub-block-based intra prediction is applied to the fourth coding block or not is included in the compressed image signal.
7 more elements
Dependencies are inferred from the claim text.