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.
Claims7
A method of decoding an image signal, comprising:
- decoding a coefficient of a current block from a bitstream based on a result of comparing a size of the current block and a pre-determined threshold size;
- and
- reconstructing the current block using the decoded coefficient,
- wherein when the size of the current block is greater than or equal to the pre-determined threshold size, decoding the coefficient of the current block is performed only on a partial region in the current block, and is not performed on a remaining region except for the partial region in the current block,
- wherein when the size of the current block is less than the pre-determined threshold size, decoding the coefficient of the current block is performed on an entire region of the current block,
- wherein the partial region is divided into a plurality of partial blocks, and
- wherein the coefficient of the partial region is decoded in units of the partial blocks.
A method of encoding an image signal, comprising:
- generating a current block including residual data, the residual data being a difference between an original block of the current coding block and a prediction block of the current block;
- and
- encoding a coefficient of the current block based on a result of comparing a size of the current block and a pre-determined threshold size,
- wherein when the size of the current block is greater than or equal to the pre-determined threshold size, encoding the coefficient of the current block is performed only on a partial region in the current block, and is not performed on a remaining region except for the partial region in the current block,
- wherein when the size of the current block is less than the pre-determined threshold size, encoding the coefficient of the current block is performed on an entire region of the current block,
- wherein the partial region is divided into a plurality of partial blocks, and
- wherein the coefficient of the partial region is encoded in units of the partial blocks.
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:
- generating a current block including residual data, the residual data being a difference between an original block of the current block and a prediction block of the current block;
- and
- encoding a coefficient of the current block based on a result of comparing a size of the current block and a pre-determined threshold size,
- wherein when the size of the current block is greater than or equal to the pre-determined threshold size, encoding the coefficient of the current block is performed only on a partial region in the current block, and is not performed on a remaining region except for the partial region in the current block,
- wherein when the size of the current block is less than the pre-determined threshold size, encoding the coefficient of the current block is performed on an entire region of the current block,
- wherein the partial region is divided into a plurality of partial blocks, and wherein the coefficient of the partial region is encoded in units of the partial blocks.
Dependencies are inferred from the claim text.