Title:
IMAGE PREDICTION METHOD AND APPARATUS PERFORMING INTRA PREDICTION
Document Type and Number:
WIPO Patent Application WO/2020/060233
Kind Code:
A1
Abstract:
An image decoding method according to the present document comprises the steps of: generating a prediction sample for the current block on the basis of an intra prediction mode for the current block and neighboring reference samples; and generating a reconstructed picture for the current block on the basis of the prediction sample, wherein, when the reference sample position indicated by a prediction direction of a directional prediction mode of the current block from the position of the prediction sample is the fractional sample position, the prediction sample is derived from among the neighboring reference samples by interpolating with respect to specific neighboring reference samples located around the fractional sample position, when the specific neighboring reference samples include outer neighboring reference samples located at (2*nW+1, -1) and (2*nW+2, -1) positions, the values of the outer neighboring reference samples are set to be equal to the value of a sample located at (2*nW, -1), and nW may indicate the width of the current block.
Inventors:
YOO SUNMI (KR)
HEO JIN (KR)
HEO JIN (KR)
Application Number:
PCT/KR2019/012154
Publication Date:
March 26, 2020
Filing Date:
September 19, 2019
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04N19/593; H04N19/11; H04N19/117; H04N19/132; H04N19/176; H04N19/59
Foreign References:
| KR20180019566A | 2018-02-26 | |||
| KR101772459B1 | 2017-08-30 | |||
| KR101615503B1 | 2016-04-26 | |||
| US20180249156A1 | 2018-08-30 | |||
| US20130287114A1 | 2013-10-31 |
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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