# US 10,873,756 B2 · Interaction between LUT and AMVP > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,756 B2 - Document ID: US10873756B2 - Status: Granted - Kind: B2 - Application number: 16/987,711 - Filed: 2020-08-07 - Published: 2020-11-19 - Granted: 2020-12-22 - Earliest claimed: 2018-06-29 - Assignees: Beijing Bytedance Network Technology Co., Ltd.; Bytedance Inc. - Applicants: Beijing Bytedance Network Technology Co., Ltd.; Bytedance Inc. - Inventors: Li Zhang; Kai Zhang; Hongbin Liu; Yue Wang - Web page: https://patentgrep.com/patent/US10873756B2 ## CPC - H04N 19/513: Processing of motion vectors - H04N 19/105: Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction - H04N 19/137: Motion inside a coding unit, e.g. average field, frame or block difference - H04N 19/176: the region being a block, e.g. a macroblock - H04N 19/184: the unit being bits, e.g. of the compressed video stream - H04N 19/52: by predictive encoding - H04N 19/70: characterised by syntax aspects related to video coding, e.g. related to compression standards - H04N 19/96: Tree coding, e.g. quad-tree coding - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A method of video decoding is provided to include maintaining tables, wherein each table includes a set of motion candidates and each motion candidate is associated with corresponding motion information; and performing a conversion between a first video block and a bitstream representation of a video including the first video block, the performing of the conversion including using at least some of the set of motion candidates as a predictor to process motion information of the first video block. ## Claims ### Claim 1 A video processing method, comprising: constructing a motion candidate list for a current video block, wherein during the constructing, at least one motion candidate of a table is selectively checked in an order after checking at least one block each of which has a pre-defined relative position compared to the current video block; determining motion information of the current video block using the motion candidate list; and coding the current video block based on the determined motion information; wherein the table includes one or more motion candidates derived from one or more previously coded video blocks that are coded prior to the current video block, and arrangement of the motion candidates in the table is based on a sequence of addition of the motion candidates into the table. ### Claim 2 (depends on 1) The method of claim 1, wherein the at least one block comprises a temporal block which is in a different picture from that contains the current video block. ### Claim 3 (depends on 1) The method of claim 1, wherein the at least one block comprises a given spatial block which is located in a same picture as that contains the current video block. ### Claim 4 (depends on 1) The method of claim 1, wherein the at least one block comprises a last spatial block among multiple spatial blocks checked in an order where the multiple spatial blocks are located in a same picture as that contains the current video block. ### Claim 5 (depends on 1) The method of claim 1, wherein the motion candidate list is motion vector prediction list. ### Claim 6 (depends on 5) The method of claim 5, further comprising adding a motion vector of the at least one motion candidate of the table into the motion vector prediction list. ### Claim 7 (depends on 5) The method of claim 5, wherein checking the at least one motion candidate of the table comprising checking reference picture information of the motion candidate. ### Claim 8 (depends on 1) The method of claim 1, wherein the motion candidate list is a merge candidate list. ### Claim 9 (depends on 8) The method of claim 8, further comprising adding the at least one motion candidate of the table to the merge candidate list. ### Claim 10 (depends on 9) The method of claim 9, wherein the at least one motion candidate of the table is checked before checking other merge candidates related to a spatial block or temporal block. ### Claim 11 (depends on 1) The method of claim 1, wherein a motion vector of the at least one motion candidate of the table or the at least one motion candidate is added into the motion candidate list after all of at least one motion candidate derived from the at least one block. ### Claim 12 (depends on 1) The method of claim 1, wherein a position of the at least one block is different for different objects to be coded. ### Claim 13 (depends on 1) The method of claim 1, wherein if at least one condition is satisfied, at least one motion candidate of the table is checked, wherein the at least one condition is based on at least one of: a current number of motion candidates in the motion candidate list after checking the at least one block, or a current number of motion candidates in the table. ### Claim 14 (depends on 13) The method of claim 13, wherein the at least one condition further comprises: the current number of motion candidates in the motion candidate list failing to reach a specific value. ### Claim 15 (depends on 14) The method of claim 14, wherein the specific value is related with an allowable maximum number of motion candidates in the motion candidate list. ### Claim 16 (depends on 13) The method of claim 13, wherein the at least one condition comprises: the current number of motion candidates in the table being greater than zero. ### Claim 17 (depends on 1) The method of claim 1, wherein the motion candidate of the table is associated with motion information including at least one of: a prediction direction, a reference picture index, motion vector values, an intensity compensation flag, an affine flag, a motion vector difference precision, motion vector difference value or a filtering parameter. ### Claim 18 (depends on 1) The method of claim 1, wherein the method further comprises: updating the table based on the motion information of the current block. ### Claim 19 (depends on 1) The method of claim 1, wherein one or more motion candidates in the table are deleted due to adding a new motion candidate into the table when the table is full before the new motion candidate is added to the table. ### Claim 20 (depends on 1) The method of claim 1, wherein the current video block is coded with a non-affine inter mode or an affine inter mode. ### Claim 21 (depends on 1) The method of claim 1, further comprising adding a motion vector of the at least one motion candidate of the table into the motion candidate list based on the checking result. ### Claim 22 (depends on 1) The method of claim 1, wherein the coding comprises decoding the current video block from the bitstream representation. ### Claim 23 (depends on 1) The method of claim 1, wherein the coding comprises encoding the current video block into the bitstream representation. ### Claim 24 An apparatus for coding video data comprising a processor and a non-transitory memory with instructions thereon, wherein the instructions upon execution by the processor, cause the processor to: construct a motion candidate list for a current video block of a video, wherein during the constructing, at least one motion candidate of a table is selectively checked in an order after checking at least one block each of which has a pre-defined relative position compared to the current video block; determine motion information of the current video block using the motion candidate list; and code the current video block based on the determined motion information; wherein the table includes one or more motion candidates derived from one or more previously coded video blocks that are coded prior to the current video block, and arrangement of the motion candidates in the table is based on a sequence of addition of the motion candidates into the table. ### Claim 25 A non-transitory computer-readable storage medium storing instructions that cause a processor to: construct a motion candidate list for a current video block of a video, wherein during the constructing, at least one motion candidate of a table is selectively checked in an order after checking at least one block each of which has a pre-defined relative position compared to the current video block; determine motion information of the current video block using the motion candidate list; and code the current video block based on the determined motion information; wherein the table includes one or more motion candidates derived from one or more previously coded video blocks that are coded prior to the current video block, and arrangement of the motion candidates in the table is based on a sequence of addition of the motion candidates into the table.