Abstract: Aspects of the disclose provide methods and an apparatus for video and/or image coding. The apparatus includes processing circuitry that receive a bitstream including a frame. Coding information for a block in the frame indicates that the block is coded with a joint motion vector difference (JMVD) coding mode and a compound weighted prediction mode. The coding information includes scaling factor information of the JMVD coding mode. If the scaling factor information indicates that each of scaling factors of components of at least one MVD associated with at least one respective reference frame of the block is a pre-defined scaling factor, a weighting factor of the compound weighted prediction mode is determined based on a list of weighting factors. Otherwise, the weighting factor of the compound weighted prediction mode is determined based on a subset of the list of weighting factors.

Abstract: This disclosure relates generally to video coding and particularly to methods and systems for deriving context adaptive interpolation filter used for generating prediction samples in inter prediction involving a fractional motion vector or block vector. For example, an encoder and a decoder may derive interpolation filters adaptively using reconstructed samples. The reconstructed samples may belong to templates near a current block and a reference block related by the motion vector or block vector. The derivation of the adaptive interpolation filters may be based on minimizing distortions between interpolated templates associated with the reference block and the templates associated with the current block.

Abstract: This disclosure relates generally to video coding/decoding and particularly for enhancing block adaptive weighted prediction (BAWP) with a block vector. One method includes receiving a coded video bitstream; identifying, from the coded video bitstream, a block vector corresponding to a reference block associated with the current block of the current frame; determining a scaling factor based on a syntax explicitly signaled in the coded video bitstream; generating a predicted block based on the reference block according to a linear equation associated with the scaling factor; and reconstructing, by the device, the current block based on the predicted block.

Abstract: This disclosure relates generally to video coding/decoding and particularly for enhancing block adaptive weighted prediction (BAWP). One method includes receiving a coded video bitstream; identifying, from the coded video bitstream, a motion vector corresponding to a reference block associated with the current block of the current frame; obtaining a scaling factor based on a syntax explicitly signed in the coded video bitstream; determining a template used to derive an offset value; deriving the offset value based on the template; generating a predicted block based on the reference block according to a linear equation, the linear equation being associated with the scaling factor and the offset value; and reconstructing, by the device, the current block based on the predicted block.

Abstract: This disclosure relates generally to video coding/decoding and particularly for a transform dictionary. A method includes receiving the coded video bitstream; determining, based on the coded video bitstream, a transform pile for the current block, the transform pile being one transform pile in a transform dictionary, the transform dictionary comprising a plurality of transform piles, and the transform pile comprising a plurality of transform sets; determining a transform set in the transform pile; determining a transform kernel in the transform set; performing an inverse transform for the current block based on the transform kernel for obtaining a residual block for the current block; and reconstructing the current block based on the residual block.

Abstract: A sending device sends, by using a first resource and a second resource, a reference signal corresponding to a first port. The first resource and the second resource are respectively on a first OFDM symbol and a second OFDM symbol that are not adjacent to each other. The first port belongs to a first port set or a second port set, a reference signal corresponding to a port in the first port set corresponds to a first cover code on the first resource and the second resource, a reference signal corresponding to a port in the second port set corresponds to a second cover code on the first resource and the second resource, and the first cover code is different from the second cover code.

Abstract: Methods and systems for encoding and decoding video are described. In one aspect, a method of video decoding includes receiving video data that includes a first block and a first syntax element from a video bitstream. The method also includes determining a secondary transform kernel type value for the first block based on the first syntax element. In accordance with a determination that the secondary transform kernel type has a first value, a secondary transform set identifier is determined based on a second syntax element from the video bitstream, and an inverse secondary transform is performed on the first block using the determined secondary transform kernel type and determined secondary transform set identifier. In accordance with a determination that the secondary transform kernel type has a second value, the inverse secondary transform is not performed on the first block.

Abstract: This disclosure describes aspects of advanced video coding technologies and is particular related to cross-component sample offset (CCSO) filtering of reconstructed samples. For example, a quantizer for quantizing sample deltas in order to apply a CCSO filter may be constructed as an asymmetric quantizer with respect to zero sample delta. Either a symmetric or an asymmetric quantizer may be selected for processing sample deltas prior to applying a CCSO filter. An asymmetric quantizer may relate to a corresponding symmetric quantizer by a non-zero offset. Signaling of a selection of an asymmetric quantizer may be provided separately from or dependent on a signaling of a symmetric quantizer.

Abstract: The present application provides a light emitting panel, a preparation method thereof, and a light emitting apparatus, which relate to the field of display technology. The light emitting panel includes a base; a reflective layer located on a side of the base, the reflective layer includes a plurality of grooves arranged in an array; a plurality of devices located in the grooves and electrically connected to the base; a first optical film located on a side of the reflective layer facing away from the base, the orthographic projection of the first optical film on the base covers the orthographic projection of the reflective layer on the base, and at least partial areas of the reflective layer are in direct contact with the first optical film.

Abstract: A method of processing data for an autonomous vehicle, an electronic device, a storage medium, and an autonomous vehicle are provided. The method includes: acquiring sensor data for the autonomous vehicle, wherein the sensor data includes inertial measurement data, LiDAR data, and visual image data; determining a first constraint factor for the inertial measurement data according to the inertial measurement data and the visual image data; determining a second constraint factor for the LiDAR data according to the inertial measurement data and the LiDAR data; determining a third constraint factor for the visual image data according to the inertial measurement data, the visual image data and the LiDAR data; and processing the sensor data based on the first constraint factor, the second constraint factor and the third constraint factor, so as to obtain positioning data for positioning the autonomous vehicle.

Abstract: A method for video coding includes obtaining a coding block of a video bitstream, determining whether a joint coding of motion vector difference (JMVD) is used for predicting the coding block, obtaining, based on determining that the JMVD is used selected for predicting the coding block, scaling factors, deriving a motion vector difference (MVD) for one or more reference frame lists based on an application of the scaling factors to one or more components of the JMVD along one or more pre-defined directions, and reconstructing the coding block based on at least the derived MVD.

Abstract: According to implementations of the present disclosure, a method, apparatus, device and medium for managing molecular prediction is provided. In the method, an upstream model is obtained from a portion of network layers in a pretrained model, the pretrained model describing an association between a molecular structure and molecular energy. A downstream model is determined based on a molecular prediction purpose, and an output layer of the downstream model is determined based on the molecular prediction purpose. A molecular prediction model is generated based on the upstream model and the downstream model, the molecular prediction model describing an association between a molecular structure and a molecular prediction purpose associated with the molecular structure. Since the upstream model may have extensive knowledge related to molecules, the amount of training data required to train the molecular prediction model that is generated based on the upstream model and the downstream model may be reduced.

Abstract: This disclosure relates generally to video coding/decoding. One method includes receiving a video bitstream comprising a current picture, the current picture comprising the current block, and the current block comprising a current transform block; extracting a syntax element for a skip transform flag, the skip transform flag indicating whether the current transform block has all zero coefficient; deriving a context for entropy decoding the skip transform flag based on at least one of: a prediction mode of the current transform block; a quantization index information for the current transform block; or whether the current transform block is calculated by a secondary transform that is applied jointly on a transform block of a second component; decoding the skip transform flag using the context; and reconstructing the current block based on skip transform flag.

Abstract: The various implementations described herein include methods and systems for coding video. In one aspect, a video bitstream includes a current coding block of an image frame and a syntax element for a cross-component intra prediction (CCIP) mode. The CCIP mode indicates whether each chroma sample of the current coding block is determined based on one or more luma samples. An electronic device generates a plurality of hypothesis values to be used in predicting a first chroma sample by combining a plurality of neighboring luma samples of a first luma sample that is co-located with the first chroma sample using a plurality of coefficients. The first chroma sample is predicted by combining the first luma sample and the plurality of hypothesis values based on a plurality of weighing factors. The electronic device reconstructs the current coding block including the first chroma sample.

Abstract: A light-emitting substrate includes a back plate, light-emitting regions arranged in an array and a bonding electrode group. The light-emitting regions are disposed on the back plate, and each light-emitting region is provided with at least one light-emitting group therein. The bonding electrode group is disposed on the back plate and includes a first bonding electrode and remaining bonding electrodes. A second power supply voltage terminal of a light-emitting group is electrically connected to a feedback signal line included in the light-emitting substrate, and the first bonding electrode is electrically connected to the feedback signal line. An impedance between the first bonding electrode and an adjacent one of the remaining bonding electrodes is larger then an impedance between two adjacent and consecutive ones of the remaining bonding electrodes.

Abstract: A computing system receives a video bitstream that comprises a current block within a current picture and one or more syntax elements. The current block is encoded in a subblock-based motion vector (MV) refinement mode using information from a first reference block and a second reference block. The system applies a MV refinement to generate a refined first MV indicating a first location of the first reference block and a refined second MV indicating a second location of the second reference block. Subsequent to applying the MV refinement, in accordance with a determination that (i) the first location is outside of a first set of reference boundaries and/or (ii) the second location is outside of a second set of reference boundaries, the system decodes the current block using a weighted average of respective values from the first and second locations.

Abstract: The various implementations described herein include methods and systems for encoding and decoding video. For example, a computing system receives a video bitstream that includes a current block and a syntax element. The current block is encoded using information from a set of reference blocks. The system determines, based on the syntax element, whether the current block is encoded in a compound weighted prediction (CWP) mode. The system decodes the current block using a set of weighted prediction factors when the current block is encoded in the CWP mode. When the current block is not encoded in the CWP mode, the system decodes the current block using an implicit masked blending mode based on a weighted average of reference values associated with the set of reference blocks.

Abstract: This disclosure relates to an automatic driving method, apparatus and system, and a non-transitory computer-readable storage medium, and relates to the field of agricultural machine automatic driving. The automatic driving method includes acquiring a trajectory of travel of an agricultural machine on a current row and an image of an operated area of a farm implement connected with the agricultural machine on the current row; determining a boundary of the operated area of the farm implement on the current row according to the image of the operated area of the farm implement on the current row; determining an operating width of the farm implement; and determining a space between a trajectory of travel of the agricultural machine on a next row and the trajectory of travel of the agricultural machine on the current row.

Abstract: Provided is a support member of a flexible display module. The support member includes: a body portion and a plurality of outward protrusion portions. The plurality of outward protrusion portions are at least distributed at two opposite sides of the body portion and protrude outwards relative to the sides of the body portion. A positioning hole is formed in each of the outward protrusion portions.

Abstract: A backlight module includes a substrate provided with a light-emitting region and a bonding region, a plurality of light-emitting units disposed on a side of the substrate, a back plate disposed on the other side of the substrate, and at least three drive circuit boards bonded and connected to the bonding region by first connectors. Moreover, an extension direction of a long edge of each of the light-emitting units is not parallel to a bonding edge of the bonding region. In this way, when the back plate is a curved back plate, the risk of peeling of the light-emitting units from the substrate when the back plate is in a curved state can be reduced by flexibly setting the degree of the included angle between the extension direction of each long edge of each light-emitting unit and the bonding edge of the bonding region.