Title:
IMAGE DATA ENCODING/DECODING METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2018/066988
Kind Code:
A1
Abstract:
Disclosed is an image data encoding/decoding method and apparatus. A method for decoding a 360-degree image comprises the steps of: receiving a bitstream obtained by encoding a 360-degree image; generating a prediction image by making reference to syntax information obtained from the received bitstream; combining the generated prediction image with a residual image obtained by dequantizing and inverse-transforming the bitstream, so as to obtain a decoded image; and reconstructing the decoded image into a 360-degree image according to a projection format. Here, the step of generating the prediction image comprises the steps of: obtaining, from motion information included in the syntax information, a motion vector candidate group including a motion vector of a block adjacent to a current block to be decoded; deriving a prediction motion vector from the motion vector candidate group, on the basis of selection information extracted from the motion information; and determining a prediction block for the current block to be decoded, using a final motion vector derived by adding the prediction motion vector to a differential motion vector extracted from the motion information.
Inventors:
KIM KI BAEK (KR)
Application Number:
PCT/KR2017/011149
Publication Date:
April 12, 2018
Filing Date:
October 10, 2017
Export Citation:
Assignee:
KIM KI BAEK (KR)
International Classes:
H04N19/625; H04N19/103; H04N19/11; H04N19/119; H04N19/124; H04N19/129; H04N19/13; H04N19/134; H04N19/176; H04N19/51
Foreign References:
KR20060050350A | 2006-05-19 | |||
KR20150068299A | 2015-06-19 | |||
KR20160097182A | 2016-08-17 | |||
KR20070103347A | 2007-10-23 | |||
KR20160032909A | 2016-03-25 |
Other References:
See also references of EP 3525468A4
Attorney, Agent or Firm:
E-SANG PATENT & TRADEMARK LAW FIRM (KR)
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