Video image processing method and device
An encoder includes a memory storing program instructions and a processor configured to execute the program instructions to determine a current image block, turn off a temporal motion vector prediction (TMVP) operation in response to a size of the current image block meeting a preset condition so that a temporal candidate motion vector of the current image block is not determined according to the TMVP operation, and encode the current image block. The TMVP operation includes determining a relevant block of the current image block in a temporal neighboring image, and determining the temporal candidate motion vector of the current image block according to a motion vector of the relevant block.
1 . An encoder comprising:
a memory storing program instructions; and
a processor configured to execute the program instructions to:
determine a current image block;
in response to a size of the current image block meeting a preset condition, turn off a temporal motion vector prediction (TMVP) operation so that a temporal candidate motion vector of the current image block is not determined according to the TMVP operation; and
encode the current image block;
wherein the TMVP operation includes:
determining a relevant block of the current image block in a temporal neighboring image; and
determining the temporal candidate motion vector of the current image block according to a motion vector of the relevant block.
2 . The encoder of claim 1 , wherein the preset condition includes that a number of pixels of the current image block is:
less than a preset number, or
less than or equal to a preset number.
3 . The encoder of claim 2 , wherein the preset number is 32.
4 . The encoder of claim 1 , wherein the processor is further configured to execute the program instructions to, when turning off the TMVP operation so that the temporal candidate motion vector of the current image block is not determined according to the TMVP operation:
turn off the TMVP operation in a motion information candidate list of a first type of mode or in a motion information candidate list of a second type of mode; or
turn off the TMVP operation in the motion information candidate list of the first type of mode and in the motion information candidate list of the second type of mode.
5 . The encoder of claim 4 , wherein:
the first type of mode includes merge mode and/or affine merge mode; and/or
the second type of mode includes advanced motion vector prediction (AMVP) mode.
6 . A decoder comprising:
a memory storing program instructions; and
a processor configured to execute the program instructions to:
determine a current image block;
in response to a size of the current image block meeting a preset condition, turn off a temporal motion vector prediction (TMVP) operation so that a temporal candidate motion vector of the current image block is not determined according to the TMVP operation; and
decode the current image block;
wherein the TMVP operation includes:
determining a relevant block of the current image block in a temporal neighboring image; and
determining the temporal candidate motion vector of the current image block according to a motion vector of the relevant block.
7 . The decoder of claim 6 , wherein the preset condition includes that a number of pixels of the current image block is:
less than a preset number, or
less than or equal to a preset number.
8 . The decoder of claim 7 , wherein the preset number is 32.
9 . The decoder of claim 6 , wherein the processor is further configured to execute the program instructions to, when turning off the TMVP operation so that the temporal candidate motion vector of the current image block is not determined according to the TMVP operation:
turn off the TMVP operation in a motion information candidate list of a first type of mode or in a motion information candidate list of a second type of mode; or
turn off the TMVP operation in the motion information candidate list of the first type of mode and in the motion information candidate list of the second type of mode.
10 . The decoder of claim 9 , wherein:
the first type of mode includes merge mode and/or affine merge mode; and/or
the second type of mode includes advanced motion vector prediction (AMVP) mode.
11 . A bitstream generation method comprising:
determining a current image block;
in response to a size of the current image block meeting a preset condition, turning off a temporal motion vector prediction (TMVP) operation so that a temporal candidate motion vector of the current image block is not determined according to the TMVP operation;
encoding the current image block; and
generating a bitstream;
wherein the TMVP operation includes:
determining a relevant block of the current image block in a temporal neighboring image; and
determining the temporal candidate motion vector of the current image block according to a motion vector of the relevant block.
12 . The method of claim 11 , wherein the preset condition includes that a number of pixels of the current image block is:
less than a preset number, or
less than or equal to a preset number.
13 . The method of claim 12 , wherein the preset number is 32.
14 . The method of claim 11 , wherein turning off the TMVP operation so that the temporal candidate motion vector of the current image block is not determined according to the TMVP operation includes:
turning off the TMVP operation in a motion information candidate list of a first type of mode or in a motion information candidate list of a second type of mode; or
turning off the TMVP operation in the motion information candidate list of the first type of mode and in the motion information candidate list of the second type of mode.
15 . The method of claim 14 , wherein:
the first type of mode includes merge mode and/or affine merge mode; and/or
the second type of mode includes advanced motion vector prediction (AMVP) mode.