Multiview video encoding method using reference picture set for multiview video prediction and device thereof, and multiview video decoding method using reference picture set for multiview video prediction and device thereof

Abstract

The present invention provides methods of encoding and decoding multi-view video by performing inter-prediction and inter-view prediction on each of pictures of multi-view video according to views. A prediction encoding method of encoding a multi-view video includes determining a reference picture set including at least one short term reconstructed picture having a different reproduction order from that of a current picture and a reference picture set including at least one long term reconstructed picture, among same view reconstructed pictures that are reconstructed prior to the current picture, and determining a reference picture set including at least one short term reconstructed picture having the same reproduction order as that of the current picture, among different view reconstructed pictures that are reconstructed prior to the current picture; determining at least one reference list between a first reference list including at least one reconstructed picture having a reproduction order earlier than that of the current picture and at least one reconstructed picture having the same reproduction order as that of the current picture and having a smaller view identifier (VID) than that of the current picture, among the determined reference picture sets, and a second reference list including at least one reconstructed picture having the same reproduction order as that of the current picture and having a later reproduction order than that of the current picture and at least one reconstructed picture having the same reproduction order as that of the current picture and having a greater VID than that of the current picture; determining at least one reference picture and reference block for a current block of the current picture by using the determined at least one reference list; and performing at least one selected from inter-prediction and inter-view prediction for the current block by using the reference block.

Description

technical field [0001] The present invention relates to multi-view video encoding and decoding. Background technique [0002] With the development and provision of hardware for reproducing and storing high-resolution or high-quality video content, demands for video codecs for efficiently encoding or decoding high-resolution or high-quality video content are increasing. According to conventional video codecs, video is encoded according to a restricted encoding method based on macroblocks having a predetermined size. [0003] Image data in the spatial domain is transformed into coefficients in the frequency domain via frequency transform. According to a video codec, an image is divided into blocks having a predetermined size, discrete cosine transform (DCT) is performed on each block, and frequency coefficients are encoded in block units for fast calculation of frequency transform. Compared with image data in the spatial domain, coefficients in the frequency domain are easil...

AI Technical Summary

Problems solved by technology

[0004] Although there is an increasing demand for multi-viewpoint captured video, the amount of video data that also increases with the number of viewpoints poses a problem

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