Image encoding/decoding method and apparatus using weighted prediction, and method for transmitting bitstream

Abstract

An image encoding/decoding method and apparatus are provided. An image decoding method performed by an apparatus according to the present disclosure may comprise the steps of: parsing weighting value information indicating a weighting value of a reference sample from a bitstream according to a weighting value parameter syntax structure; and decoding the current block by performing inter prediction based on the weighted value information. Here, the step of parsing according to the weighted value parameter syntax structure may comprise the steps of: obtaining weighted value number information indicating the number of weighted value information obtained from the bitstream according to the weighted value parameter syntax structure; and obtaining weighted value information from the weighted value parameter syntax structure based on the weighted value number information.

Description

technical field [0001] The present disclosure relates to an image encoding / decoding method and apparatus, and more particularly, to an image encoding / decoding method and apparatus using weighted prediction and a method of transmitting a bitstream generated by the image encoding method / apparatus of the present disclosure. Background technique [0002] Recently, demands for high-resolution and high-quality images, such as high-definition (HD) images and ultra-high-definition (UHD) images, are increasing in various fields. As the resolution and quality of image data improve, the amount of information or bits transmitted is relatively increased compared to existing image data. An increase in the amount of information or bits transmitted leads to an increase in transmission costs and storage costs. [0003] Therefore, efficient image compression techniques are needed to efficiently transmit, store, and reproduce information about high-resolution and high-quality images. SUMMAR...

AI Technical Summary

Problems solved by technology

The increase in the amount of transmitted information or the amount

Images