Abstract: A method of decoding a video signal, apparatus, and a non-transitory computer-readable storage medium are provided. The method includes obtaining a video block from the video signal, obtaining spatial neighboring blocks based on the video block, obtaining up to one left non-scaled motion vector predictor (MVP) based on the multiple left spatial neighboring blocks, obtaining up to one above non-scaled MVP based on the multiple above spatial neighboring blocks, deriving, at the decoder and by reducing possibility of selecting scaled MVPs derived from the spatial neighboring blocks, an MVP candidate list based on the video block, the multiple left spatial neighboring blocks, the multiple above spatial neighboring blocks, receiving a best MVP based on the MVP candidate list, and obtaining a prediction signal of the video block based on the best MVP.

Abstract: A method of decoding video data is performed by an electronic apparatus. The electronic apparatus receives, from a video bitstream, one or more syntax elements indicating that a coding block is coded under a palette mode. The electronic apparatus divides the coding block into multiple segments, each of the multiple segments having a set of index values that is independent from another one of the multiple segments. The electronic apparatus receives, from the video bitstream, index values associated with each of the multiple segments and a palette table associated with the coding block and decodes the multiple segments in parallel according to the index values and the palette table associated with the coding block.

Abstract: An electronic apparatus performs a method of updating an inter-predicted current block using a neighboring affine block. The electronic apparatus first identifies a pixel within the inter-predicted current block, the pixel having a first inter-predicted pixel value. Next, the electronic apparatus determines a motion vector difference for the pixel based on a set of affine parameters of the neighboring affine block and then a pixel value difference for the pixel according to the motion vector difference. The pixel value difference is an inner product of the pixel value gradient vector and the motion vector difference as the pixel value difference. Finally, the electronic apparatus updates the first inter-predicted pixel value with the pixel value difference as a second inter-predicted pixel value.

Abstract: Methods and apparatuses are provided for video coding. The method includes: partitioning video pictures into a plurality of coding units (CUs), at least one of which is further partitioned into two prediction units (PUs) including at least one geometric shaped PU; obtaining a first merge list including a plurality of candidates, each including one or more motion vectors; and obtaining a uni-prediction merge list for the geometric shaped PU by selecting the one or more motion vectors directly from the first merge list.

Abstract: Embodiments of the disclosure provide systems and methods for performing frame rate up-conversion of video data including a sequence of image frames. The method may include determining a set of motion vectors of a target frame relative to a plurality of reference frames. The target frame is to be generated and interpolated into the sequence of image frames. The method may further include performing a motion vector classification on the set of motion vectors to generate a target object map for the target frame. The method may additionally include projecting the target object map onto the plurality of reference frames to generate a plurality of reference object maps based on the set of motion vectors. The method may additionally include detecting an occlusion area in the target frame based on the set of motion vectors, the target object map, and the plurality of reference object maps.

Abstract: Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for prediction refinement with optical flow (PROF) for decoding a video signal. A decoder may obtain a first reference picture associated with a video block in a current picture within the video signal and a first motion vector (MV) from the video block in the current picture to a reference video block in the first reference picture. The decoder may obtain first prediction samples I(i, j) of a video block generated from the reference video block in the first reference picture. The decoder may control internal bit-depths of internal PROF parameters. The decoder may obtain prediction refinement values for the first prediction samples I(i, j) based on the horizontal and vertical gradient values and the horizontal and vertical motion differences. The decoder may obtain second prediction samples I?(i, j). The decoder may obtain final prediction samples of the video block.

Abstract: An electronic apparatus performs a method of decoding video data. The electronic apparatus first receives, from a video bitstream having a hierarchical structure, a first syntax element associated with a first level of the hierarchical structure. In accordance with a determination that the first syntax element indicates that a palette mode is enabled for one or more coding units (CUs) under the first level in the video bitstream, the electronic apparatus reconstructs, from the video bitstream, pixel values of at least one of the one or more CUs according to a corresponding palette table. But in accordance with a determination that the first syntax element indicates that a palette mode is disabled for the one or more CUs, the electronic apparatus reconstructs, from the video bitstream, the pixel values of any of the one or more CUs according to a non-palette scheme.

Abstract: An electronic apparatus performs a method of updating a most probable modes candidate list for a current block of video data. The electronic apparatus first identifies a neighboring block located at a predefined location relative to the current block and its associated matrix-based intra prediction mode. Next, the electronic apparatus determines a regular intra prediction mode corresponding to the matrix-based intra prediction mode for the neighboring block according to a predefined mathematical relationship between regular intra prediction modes and matrix-based intra prediction modes. Finally, the electronic apparatus inserts the regular intra prediction mode associated with the neighboring block into the most probable modes candidate list according to a predefined order.

Abstract: A method for video coding is provided. The method includes: determining a signaling of merge modes for deriving motion information of a current block, where the merge modes include: regular merge mode and extended merge modes; and deriving motion information of the current block using the regular merge mode, upon determining that the signaling of merge modes includes a positive signal of regular merge mode.

Abstract: Provided is a board mounting device, including: a fixed plate, wherein at least one connecting piece is arranged on one surface of the fixed plate; a support plate for fixing a board, wherein the support plate is provided with at least one groove, which is in match with the at least one connecting piece and provides at least one movement track; and an adjusting device, configured to adjust the support plate to switch between a first state and a second state, wherein in the first state, the support plate is fixed relative to the fixed plate, and in the second state, the support plate is movable relative to the fixed plate. In this way, relative movement between the board and the fixed plate is realized, and the mounting and maintenance performances of the board are achieved.