IMAGE CODING METHOD AND DEVICE FOR BUFFER MANAGEMENT OF DECODER, AND IMAGE DECODING METHOD AND DEVICE.

摘要

The present invention relates to an image coding method and device for buffer management of a decoder, and an image decoding method and device. The image coding method according to the present invention: determines the maximum size of a buffer required for decoding each image frame in a decoder and the number of image frames requiring realignment, and latency information on an image frame which has the greatest difference between a decoding order and a display order among image frames forming an image sequence, based on the decoding order of each image frame of a coded image sequence, a decoding order of a reference frame that each image frame refers to, the display order of each image frame and a display order of the reference frame; and adds a first syntax representing the maximum size of a buffer, a second syntax representing the number of image frames requiring realignment, and a third syntax representing latency information to a set of essential sequence parameters that is a set of information related to the coding of an image sequence.