Title:
CODING DEVICE, DECODING DEVICE, CODING METHOD, AND DECODING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/184526
Kind Code:
A1
Abstract:
A coding device (100) that codes a coding target block of an image is provided with a processor (a1) and memory (a2) that is connected to the processor (a1). The processor (a1) generates, for a motion, a first predictive image having integer pixel accuracy on the basis of a motion vector of the coding target block, and uses a first interpolation filter or a second interpolation filter differing in the number of taps from the first interpolation filter to interpolate the values of decimal pixel positions between a plurality of integer pixels included in the first predictive image, thereby generating a second predictive image having decimal pixel accuracy, and codes the coding target block on the basis of the second predictive image. In the generation of the second predictive image, the first and second interpolation filters are used by switching depending on whether or not an affine mode is used for the coding target block.
Inventors:
LI JING YA
LIM CHONG SOON
TEO HAN BOON
SUN HAI WEI
KUO CHE WEI
ABE KIYOFUMI (JP)
NISHI TAKAHIRO
TOMA TADAMASA
KATO YUSUKE
LIM CHONG SOON
TEO HAN BOON
SUN HAI WEI
KUO CHE WEI
ABE KIYOFUMI (JP)
NISHI TAKAHIRO
TOMA TADAMASA
KATO YUSUKE
Application Number:
PCT/JP2020/010128
Publication Date:
September 17, 2020
Filing Date:
March 09, 2020
Export Citation:
Assignee:
PANASONIC IP CORP AMERICA (US)
International Classes:
H04N19/117; H04N19/159; H04N19/176; H04N19/54; H04N19/59
Other References:
LI J; R-L LIAO; LIM C S: "CE2-related: Using shorter-tap filter for 4x4 sized partition", JOINT VIDEO EXPERTS TEAM (JVET) , [JVET-M0310] (VERSION 4), no. [JVET-M0310, 9 January 2019 (2019-01-09), XP030201158
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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