Patent ID: 11876983
Assignee: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for decoding a video signal with a decoding apparatus, comprising:
obtaining, with the decoding apparatus, a first prediction sample of a current block by performing inter prediction on the current block;
determining, with the decoding apparatus, one or more weight prediction parameter candidates for the current block;
determining, with the decoding apparatus, a weight prediction parameter of the current block from the one or more weight prediction parameter candidates; and
obtaining, with the decoding apparatus, a second prediction sample of the current block by applying the weight prediction parameter to the first prediction sample,
wherein a number of the one or more weight prediction parameter candidates is variably determined based on a size of the current block,
wherein when the size of the current block is equal to a first block size, the number of the one or more weight prediction parameter candidates available for the current block is five,
wherein when the size of the current block is equal to a second block size, the number of the one or more weight prediction parameter candidates available for the current block is less than five,
wherein when the number of the one or more weight prediction parameter candidates is greater than one, the weight prediction parameter of the current block is determined based on index information specifying the weight prediction parameter of the current block among the weight prediction parameter candidates, and
wherein the index information is signaled from a bitstream in units of blocks.