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Video processing method, device and storage medium using lookup table
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A video processing and video block technology, applied in digital video signal modification, image communication, electrical components, etc.
Active Publication Date: 2022-03-25
BEIJING BYTEDANCE NETWORK TECH CO LTD +1
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[0004]Despite advances in video compression, digital video still accounts for the largest bandwidth usage on the Internet and other digital communication networks
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example 1
[0317] Example 1 . Each lookup table may contain one or more motion candidates, where each candidate is associated with its motion information.
[0318] a. The table size (number of motion candidates allowed) and / or the number of tables can be fixed or adaptive. The table size can be the same for all tables, or it can be different for different tables.
[0319] i. Alternatively, different sizes can be used for different lookup tables (eg, 1 or 2).
[0320] ii. In one example, the table size and / or the number of tables may be predefined.
[0321] iii. In an example, it can be in the video parameter set (Video Parameter Set, VPS), Sequence Parameter Set (Sequence Parameter Set, SPS), Picture Parameter Set (Picture Parameter Set, PPS), slice header, slice header, coding tree Signaling of table size or number of tables in a unit (CTU), coding tree block (CTB), coding unit (CU) or prediction unit (PU), regions covering multiple CTUs / CTBs / CUs / PUs.
[0322] iv. Table size and / or...
example 2
[0325] Example 2 . In one example, the table size (eg, the maximum number of allowed entries for motion candidates) and / or the number of tables may depend on the sequence resolution, the maximum coding unit size, the size of the Merge candidate list.
[0326] (a) In one example, there is no additional signaling of table size.
[0327] (b) The inference table size is the same as the largest Merge candidate signaled by the signaling.
[0328] (c) Alternatively, the inference table size is the same as the signaled largest Merge candidate minus some value. This certain value may be defined as how many spatial / temporal neighbor blocks can be accessed during Merge candidate list construction, eg 5 in HEVC.
example 3
[0329] Example 3 . When encoding a block in Merge or AMVP mode, the LUT may be updated with motion information associated with the block.
[0330] (a) In one example, after encoding / decoding a block with intra mode, all LUTs are not updated.
[0331] (b) In one example, after encoding / decoding a block with intra block copy mode, all LUTs are not updated.
[0332] (c) In one example, after encoding / decoding a block with affine Merge or affine AMVP mode, all LUTs are not updated.
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Abstract
Apparatuses, systems, and methods are described for encoding and decoding digital video using a table containing encoding candidates. In a representative aspect, a video processing method is provided to include maintaining N tables indexed by indices i=1 to N, wherein the ith table has a value equal to the maximum number of motion candidates in the ith table The size of the corresponding M(i), where i, N, and M(i) are integers, and where each motion candidate is associated with corresponding motion information; and using the motion candidates from the table to perform the current video block and include the current video block Conversion between bitstream representations of video data for video blocks.
Description
[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] In accordance with applicable patent law and / or under the rules of the Paris Convention, this application is filed in time for International Patent Application No. PCT / CN2018 / 093663 filed on June 29, 2018 and International Patent Application No. PCT / CN2018 / 093663 filed on July 2, 2018 Priority and benefit of Patent Application No. PCT / CN2018 / 093987. The entire disclosures of International Patent Application No. PCT / CN2018 / 093663 and International Patent Application No. PCT / CN2018 / 093987 are incorporated by reference as part of the disclosure of this application. technical field [0003] This patent document relates to video encoding and decoding techniques, devices and systems Background technique [0004] Despite advances in video compression, digital video still accounts for the largest use of bandwidth on the Internet and other digital communication networks. Bandwidth requirements for digital video usage are expec...
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