Title:
IMAGE CODING METHOD ON BASIS OF MOTION VECTOR REFINEMENT AND APPARATUS THEREOF
Document Type and Number:
WIPO Patent Application WO/2019/194501
Kind Code:
A1
Abstract:
A picture decoding method performed by a decoding apparatus according to the present invention, comprises the steps of: obtaining, from a bitstream, information on an adaptive motion vector resolution (AMVR) flag indicating whether to apply an AMVR mode and motion prediction information including information on an AMVR mode flag indicating a type of the AMVR mode; deriving a motion vector for a current block on the basis of the value of the AMVR mode flag when the value of the AMVR flag is 1; refining the derived motion vector; deriving prediction samples for the current block on the basis of the refined motion vector; and generating reconstruction samples for the current block on the basis of the derived prediction samples.
Inventors:
LEE JAEHO (KR)
Application Number:
PCT/KR2019/003809
Publication Date:
October 10, 2019
Filing Date:
April 01, 2019
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04N19/53; H04N19/109; H04N19/132; H04N19/176; H04N19/56; H04N19/70
Domestic Patent References:
| WO2017052000A1 | 2017-03-30 |
Foreign References:
| KR20180004147A | 2018-01-10 | |||
| KR20170113513A | 2017-10-12 | |||
| KR20160106127A | 2016-09-09 | |||
| US20120170660A1 | 2012-07-05 |
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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