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US 11,122,265 B2Granted
Video signal encoding/decoding method and apparatus
AssigneeIndustry Academy Cooperation Foundation of Sejong University
InventorsJoo Hee Moon, Sung Won Lim, Dong Jae Won
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Abstract
An image signal decoding method according to the present invention comprises the steps of: decoding information indicating whether a current block is encoded using a multi-mode intra prediction; when it is determined that the current block is encoded in the multi-mode intra prediction, dividing the current block into a plurality of partial blocks; and obtaining an intra prediction mode of each of the plurality of partial blocks.
Claims5
A method of decoding an image signal, comprising:
- receiving a bitstream including the image signal;
- decoding division type information for a first coding block from the bitstream;
- dividing, based on the division type information, the first coding block into a plurality of second coding blocks;
- determining an intra prediction mode for each of the second coding blocks;
- and
- performing intra prediction on each of the second coding blocks using the determined intra prediction mode,
- wherein when the first coding block is divided into two second coding blocks according to the division type information, the first coding block is divided based on one reference line,
- wherein when the first coding block is divided into three second coding blocks according to the division type information, the first coding block is divided based on two reference lines,
- wherein one of the three second coding blocks has a size greater than a size of the other two of the three second coding blocks,
- wherein the other two of the three second coding blocks have the same size,
- wherein a size of the one of the three second coding blocks is twice a size of the other two of the three second coding blocks, and
- wherein the one of the three second coding blocks is located between the other two of the three second coding blocks.
9 more elements
A method of encoding an image signal, comprising:
- receiving a picture of the image signal;
- determining a division type for a first coding block in the picture;
- dividing, based on the division type, the first coding block into a plurality of second coding blocks;
- and
- encoding each of the second coding blocks,
- wherein when the first coding block is divided into two second coding blocks according to the division type, the first coding block is divided based on one reference line,
- wherein when the first coding block is divided into three second coding blocks according to the division type, the first coding block is divided based on two reference lines,
- wherein one of the three second coding blocks has a size greater than a size of the other two of the three second coding blocks,
- wherein the other two of the three second coding blocks have the same size,
- wherein a size of the one of the three second coding blocks is twice a size of the other two of the three second coding blocks, and
- wherein the one of the three second coding blocks is located between the other two of the three second coding blocks.
8 more elements
A non-transitory computer-readable medium for storing data associated with an image signal, comprising:
- a data stream encoded by an encoding method,
- wherein the encoding method comprises:
- receiving a picture of the image signal;
- determining a division type for a first coding block in the picture;
- dividing, based on the division type, the first coding block into a plurality of second coding blocks;
- and
- encoding each of the second coding blocks,
- wherein when the first coding block is divided into two second coding blocks according to the division type, the first coding block is divided based on one reference line,
- wherein when the first coding block is divided into three second coding blocks according to the division type, the first coding block is divided based on two reference lines,
- wherein one of the three second coding blocks has a size greater than a size of the other two of the three second coding blocks,
- wherein the other two of the three second coding blocks have the same size,
- wherein a size of the one of the three second coding blocks is twice a size of the other two of the three second coding blocks, and
- wherein the one of the three second coding blocks is located between the other two of the three second coding blocks.
10 more elements
Dependencies are inferred from the claim text.