IMAGE ENCODING/DECODING METHOD AND DEVICE FOR SIGNALING HRD PARAMETERS, AND COMPUTER-READABLE RECORDING MEDIUM IN WHICH BITSTREAM IS STORED

摘要

Provided are an image encoding/decoding method and device for signaling HRD parameters, and a method for transmitting a bitstream. The image decoding method according to the present disclosure may comprise the steps of: acquiring first information for indicating the number of one or more hypothetical reference decoder (HRD) parameter syntax structures within a video parameter set (VPS); acquiring the one or more HRD parameter syntax structures from the VPS on the basis of the first information; acquiring, from the VPS, second information related to mapping between one or more multi-layer output layer sets (OLSs) and the one or more HRD parameter syntax structures, on the basis of the first information; selecting, on the basis of the second information, an HRD parameter syntax structure to be applied to the current OLS; and processing the current OLS on the basis of the selected HRD parameter syntax structure.