Abstract: A method for video decoding is provided. The method includes obtaining a current coding unit (CU) of a current picture, wherein the coding unit is partitioned into a plurality of regions; deriving respective motion models for the plurality of regions by using respective coding information; and determining motion information for the current CU based on the respective motion models.

Abstract: A method for video decoding is provided. The method includes determining a first reference picture and/or a second reference picture associated with a current picture comprising a current block; determining an adaptive optical model used in an optical flow based refinement based on the first reference picture and/or the second reference picture; determining an adaptive sliding window size for the current block used in the optical flow based refinement; and deriving a respective motion refinement of each subblock of the current block based on the adaptive optical model and the adaptive sliding window.

Abstract: A method of video decoding, apparatuses and non-transitory computer-readable storage media thereof are provided. The method of video decoding includes obtaining a first parameter based on a first neighbor block of a current block; obtaining a second parameter based on the first neighbor block and/or a second neighbor block of the current block; constructing an affine model using the first parameter and the second parameter; and obtaining a control point motion vector (CPMV) for the current block based on the affine model. The first neighbor block and the second neighbor block are obtained from a plurality of neighbor blocks to the current block based on at least one scanning area and at least one scanning distance. The first neighbor block and the second neighbor block are obtained by scanning the at least one scanning area at the at least one scanning distance.

Abstract: Methods for video decoding and encoding, apparatuses and non-transitory storage media are provided. In one decoding method, the decoder obtains, based on a storage granularity, a normalized position for an affine coding unit (CU) at a non-adjacent position obtained by scanning area that is not adjacent to a current CU. Furthermore, the decoder determines whether valid affine model information is stored for the normalized position, where the valid affine model information includes a position of the affine CU and derives affine model information for the affine CU based on the valid affine model information that is stored for the normalized position in response to determining that the valid affine model information is stored for the normalized position.

Abstract: Implementations of the disclosure provide a video processing apparatus and method for performing intra prediction on a video block. The video processing method may include receiving, by a processor, reference samples from a video frame of a video comprising the video block. The video processing method may further include determining, by the processor, a reference sample filter based on a size of each video block. The reference sample filter is among a plurality of reference sample filters each derived for a different video block size. The video processing method may also include applying, by the processor, the determined reference sample filter to the received reference samples. The video processing method may additionally include performing, by the processor, the intra prediction on the video block using the filtered reference samples.

Abstract: A method for video encoding, a method for video decoding, apparatuses and non-transitory computer-readable storage media thereof are provided. In the method for video decoding, the decoder may obtain one or more filtering parameters, wherein the one or more filtering parameters are from a filtering parameter set comprising a number of similar blocks, a search range, and a window size; obtain, based on the one or more filtering parameters, one or more similar pixels for a first pixel that has been filtered in a picture and the first pixel; and obtain an original pixel associated with the first pixel based on the one or more similar pixels.

Abstract: A method for video encoding, a method for video decoding, and apparatuses thereof are provided. A template-based coding scheme is applied to derive one or more coding parameters associated with a video block from a video frame based on a template of the video block. Reference-picture-resampling (RPR) prediction samples for the video block are generated based on the one or more coding parameters. The RPR prediction samples are filtered by using a filter to generate filtered RPR prediction samples for the video block. The filter is adaptively determined based on the template of the video block.

Abstract: Methods for video decoding and encoding, apparatuses and non-transitory storage media are provided. In one decoding method, the decoder obtains one or more motion vector (MV) candidates from one or more candidate lists according to a predetermined order. The candidate lists include an affine advanced motion vector prediction (AMVP) candidate list, a regular merge candidate list, and an affine merge candidate list, and the one or more MV candidates are derived from a plurality of neighbor blocks of a current block. The decoder may obtain one or more control point motion vectors (CPMVs) for the current block based on the one or more MV candidates.

Abstract: A method for video encoding comprises determining a mode of Local Illumination Compensation (LIC) for the video encoding to be enabled; calculating LIC parameters for the mode of LIC with a limited number of reference sample pairs, wherein a reference sample pair refers to a luma reference sample and a chroma reference sample; enabling the mode of LIC for the video encoding with the calculated LIC parameters to perform LIC for inter prediction to generate a prediction residual; and forming and outputting a bit-stream encoded with the prediction residual and prediction mode information indicating the mode of LIC.

Abstract: Methods for video decoding and encoding, apparatuses and non-transitory storage media are provided. In one decoding method, the decoder obtains one or more first parameters based on a first neighbor block selected from a plurality of inter-coded neighbor blocks of a current block, and obtains one or more second parameters based on a second neighbor block selected from a plurality of affine-coded neighbor blocks or a plurality of historically affine-coded neighbor blocks. The decoder constructs an affine model based on the one or more first parameters and the one or more second parameters. The decoder may project the affine model onto the current block to obtain a translational motion vector based on a specific position within the current block or a plurality of control point motion vectors for the current block, depending on whether the current block is coded in a regular inter mode or an affine mode.

Abstract: Methods for video decoding and encoding, apparatuses and non-transitory computer-readable storage media thereof are provided. One method for video decoding includes obtaining, by a decoder, a current coding unit (CU) coded with a Geometric Partition Mode (GPM); selecting, by the decoder, a candidate from a set of Merge candidates with Block Vector Difference (MBVD) candidates based on a distance index and a direction index; obtaining, by the decoder, a first Intra Block Copy (IBC) prediction using the candidate and a second prediction; and obtaining, by the decoder, a final prediction for the current CU using the first IBC prediction and the second prediction.

Abstract: Methods for video decoding and encoding, apparatuses and non-transitory storage media are provided. In one decoding method, the decoder obtains a set of blending strengths for a current block, where the current block is partitioned into two parts along a partition line for prediction in a geometric partitioning mode. Furthermore, the decoder obtains a mapping relationship between a plurality of blending indices and the blending strengths in the set of blending strengths. Moreover, the decoder obtains a binarized value indicating one of the blending indices, where the blending indices are binarized with variable length code. Further, the decoder determines a blending strength of the current block based on the binarized value and the mapping relationship.

Abstract: A method of video coding, an apparatus, and a non-transitory computer-readable storage medium thereof are provided. The method includes obtaining one or more affine candidates from a plurality of non-adjacent neighbor blocks that are non-adjacent to a current block. The method may further include obtaining one or more control point motion vectors (CPMVs) for the current block based on the one or more affine candidates.

Abstract: Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for video coding. In one method, a decoder derives a reference picture for a current coding block; the decoder derives a predictor sample based on a motion vector associated with the reference picture using a motion compensation process from the reference picture; the decoder determines whether the predictor sample is located outside the reference picture by a certain margin; and the decoder determines the predictor sample is out-of-boundary (OOB) in response to determining the predictor sample is located outside the reference picture by a certain margin.

Abstract: Implementations of the disclosure provide a video decoding apparatus and method for transform coefficient sign prediction on a video decoder side. The method includes: receiving a bitstream including a sequence of sign signaling bits; determining a sign prediction area in a transform block of a video frame from a video for performing the sign prediction for the transform coefficients of the transform block; generating a plurality of candidate hypotheses for a set of candidate transform coefficients associated with the sign prediction area of the transform block; selecting a hypothesis from the plurality of candidate hypotheses as a set of predicted signs for the set of candidate transform coefficients based on a cost function; and estimating original signs for the set of candidate transform coefficients based on the set of predicted signs and the sequence of sign signaling bits.

Abstract: Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for video coding. In one method, a decoder derives a first reference picture and a second reference picture for a current coding block; the decoder derives a first predictor sample based on a first motion vector associated with the first reference picture using a motion compensation process from the first reference picture; the decoder derives a second predictor sample based on a second motion vector associated with the second reference picture using the motion compensation process from the second reference picture; and the decoder obtains a final predictor sample in the current coding block based on at least one of the first predictor sample or the second predictor sample and an out-of-boundary (OOB) condition.

Abstract: Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for video coding and compression with high precision intra prediction technology. In one method, a decoder obtains a first control flag signaled at a specified level that comprises one of following levels: a Transform Block (TB) level, a Coding Block (CB) level, a slice level, a picture level, or a sequence level, where the first control flag indicates whether a Decoder-side High Precision Intra Mode Derivation (DHI) mode is enabled.

Abstract: Provided in the present invention are a carboxamide derivative having an RSK inhibitory effect, a pharmaceutical composition comprising same, and the use thereof. Specifically, provided in the present invention are a carboxamide derivative as represented by formula (I), which can be used as a p90 ribosomal S6 kinase (RSK) inhibitor, a tautomer, a stereoisomer, a hydrate, a solvate and a pharmaceutically acceptable salt thereof, a pharmaceutical composition comprising the compound, and the use thereof in the preparation of a pharmaceutical composition.

Abstract: Methods and apparatus are provided for video decoding/encoding. In a method provided, a decoder may obtain an original sample value of a current block; determine a slope adjustment for a model parameter in a compensation model; and determine, based on the slope adjustment, an updated model parameter in the compensation model. The decoder may further determine based on the updated model parameter and the original sample value, a refined sample value or a second sample value of the current block.

Abstract: Methods for video decoding and encoding, apparatuses, and non-transitory computer-readable storage media are provided. In one method, a decoder may obtain a first block vector (BV) and a second BV based on a bi-predicted intra block copy (IBC) mode. Additionally, the decoder may generate a first prediction block based on the first BV and generating, by the decoder, a second prediction block based on the second BV. Furthermore, the decoder may obtain a final prediction block for a current block based on the first prediction block and the second prediction block.