Abstract: A video processing method is provided to include: performing a conversion between a current video block of a video and a coded representation of the video, wherein the performing of the conversion includes configuring, based on a characteristic of the current video block of a video, a context model for coding a bin or bypass coding the bin of a bin string corresponding to an index of a secondary transform tool, wherein the index indicates an applicability of the secondary transform tool and/or a kernel information of the secondary transform tool, and wherein the secondary transform tool includes applying, during encoding, a forward secondary transform to an output of a forward primary transform applied to a residual of a video block prior to quantization, or wherein the secondary transform tool includes applying, during decoding, an inverse secondary transform to an output of dequantization to the video block before applying an inverse primary transform.

Abstract: A visual media processing method includes determining, for a conversion between a first video block of a visual media data and a bitstream representation of the visual media data, an availability of a second video block of the visual media data using a rule; and performing the conversion based on the determining, wherein the rule is at least based on a coding mode used for coding the first video block into the bitstream representation, wherein the rule specifies disallowing motion information of the second video block from being used in a merge list construction of the first block by treating the second video block as unavailable.

Abstract: A method of video processing includes deriving, for a current block, a set of control point motion vectors; determining a motion prediction model for the current block based on the set of CPMVs; and performing a conversion between the current block and a bitstream representation of the current block using the motion prediction model, the motion prediction model being a 8-parameter affine prediction model.

Abstract: Devices, systems and methods for video processing are described. An exemplary method for video processing includes determining, for a block of a video, a quantization parameter associated with the block, coding the block of the video into a bitstream representation of the video as a palette coded block in part based on a modified value of the quantization parameter, and signaling coded information related to the quantization parameter in the bitstream representation.

Abstract: Devices, systems and methods related to digital video coding, and specifically, to management of syntax flags with respect chroma formats are described. In one representative aspect, the disclosed technology may be used to provide a method for video decoding. The method includes determining a chroma format associated with a region of a video and determining, based on the chroma format, whether one or more syntax flags applicable to the region of the video are included in a syntax structure of a coded representation of the video. The one or more syntax flags are indicative of a joint chroma residual coding step for representing the region in the coded representation. The method also includes generating one or more decoded video blocks of the region by parsing the coded representation according to a presence or an absence of the one or more syntax flags in the coded representation.

Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a subpicture in a video picture of a video and a bitstream of the video according to a rule. The rule specifies that multiple syntax elements are used to specify usage of a reference picture resampling tool.

Abstract: In an exemplary aspect, a method for visual media processing includes identifying a boundary at a vertical edge and/or a horizontal edge of two video blocks; calculating a boundary strength of a filter based on at least one of the two video blocks crossing a vertical edge or a horizontal edge is coded using a combined intra-inter prediction (CIIP) mode; deciding whether to turn on or off the filter; selecting a strength of the filter in case the filter is turned on; and performing, based on the selecting, a deblocking filter (DB) process to the video blocks.

Abstract: A method of video processing is provided. The method includes: determining, for a conversion between a video block of a video and a bitstream of the video, a selected neighboring sample list according to an order, wherein the order specifies that above neighboring samples are added to the selected neighboring sample list before left neighboring samples, and performing the conversion based on a cross-component linear model, wherein parameters of a cross-component linear model is derived using a derivation method that is based on samples from the selected neighboring sample list.

Abstract: The disclosure relates to a vehicle positioning method and system for a fixed parking scenario. The method includes: a marker detection step of detecting markers and identifying a pair of markers; a pose matching step of performing pose matching based on vehicle position information and the pair of markers; a non-pose matching step of performing non-pose matching based on the pair of markers, to obtain latest vehicle position information; and a position update step of updating current vehicle position information based on the latest vehicle position information obtained in the pose matching step or the non-pose matching step.

Abstract: A display panel including a pixel driving circuit including a driving transistor (T3), a first transistor (T1) having a gate electrode connected to a first gate line (3Re1) and a first electrode connected to a gate electrode of the driving transistor (T3), and a second transistor (T2) having a gate electrode connected to a second gate line (3G1), a first electrode connected to the gate electrode of the driving transistor (T3), and a second electrode connected to a second electrode of the driving transistor (T3), the driving transistor (T3) is a P type transistor, and the first transistor (T1) and the second transistor (T2) are N type transistors, wherein the display panel further includes: a base substrate, a first conductive layer, a third conductive layer, and a first conducting part (41).

Abstract: One example energy efficiency evaluation method comprises obtaining, by a service producer, service energy consumption data of the target object, where the service energy consumption data includes service information and energy consumption information of the target object. The service producer can then determine energy efficiency information of the target object based on the service energy consumption data.

Abstract: A method for video processing is provided to include: making a determination that a coding mode is enabled for a conversion between a current video block of a video and a coded representation of the video; and performing the conversion using a palette prediction mode wherein at least a palette of representative sample values is used for the current video block, and wherein, in the coding mode, the current video block is constructed based on samples in a first domain and a second domain and/or chroma residue is scaled in a luma-dependent manner.

Abstract: Methods, systems and devices for using flexible and efficient partitioning techniques and in particular, restricting extended quadtree (EQT) partitioning, are described. An exemplary method for visual media decoding includes making a decision, based on one or more conditions, regarding a selective inclusion of one or more signaling bits for a partitioning process in a bitstream representation of a current visual media block of a plurality of visual media blocks, where the partitioning process splits the current visual media block into exactly four sub-blocks including at least one sub-block that has a size different from half of a width of the current visual media block times half of a height of the current visual media block; decoding, based on the bitstream representation, the four sub-blocks; and decoding, based on the four sub-blocks and the partitioning process, the current visual media block.

Abstract: A method for processing a video includes performing a determination, by a processor, that a first video block is partitioned to include a first prediction portion that is non-rectangular and non-square; adding a first motion vector (MV) prediction candidate associated with the first prediction portion to a motion candidate list associated with the first video block, wherein the first MV prediction candidate is derived from a sub-block MV prediction candidate; and performing further processing of the first video block using the motion candidate list.

Abstract: Devices, systems and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes performing a conversion between a current video block of a video and a bitstream representation of the current video block using a matrix based intra prediction (MIP) mode in which a prediction block of the current video block is determined by performing, on previously coded samples of the video, a boundary downsampling operation, followed by a matrix vector multiplication operation, and followed by an upsampling operation, where the upsampling operation is performed, in both a vertical direction and a horizontal direction in a fixed order, on samples obtained from the matrix vector multiplication operation.

Abstract: A video processing method is disclosed to include: generating one or more initial predictions for a sub-block of a current video block of the video; refining the one or more initial predictions to generate a final prediction block using a prediction refinement with optical flow (PROF) procedure by calculating motion vector differences based on variables having a bit width not exceeding a predetermined maximum bit width; and performing a conversion between the current video block and a coded representation of the video using the variables having the bit width not exceeding the predetermined maximum bit width.

Abstract: A method for video bitstream processing includes generating a prediction block for a first video block of a video related to a first component, where the prediction block is selectively generated according to a criterion by applying a two-step cross-component prediction mode (TSCPM), and performing a conversion between the first video block and a bitstream representation of the video using the prediction block, wherein a first field in the bitstream representation corresponds to the TSCPM.

Abstract: A fiber applied to an optical amplifier, where the fiber includes a rare earth-doped core and a cladding. The core includes a gain equalization unit. The core is configured to separately amplify optical signals of all wavelengths in a received multiplexing wave. The gain equalization unit is configured to equalize gains of the optical signals of all the wavelengths, such that gains of optical signals that are of all the wavelengths and that are transmitted from an egress port of the fiber all fall within a preset range, The gain of the optical signal of each wavelength in the optical signals of all the wavelengths is determined based on a ratio of power of an amplified optical signal to power of the unamplified optical signal.

Abstract: Methods, systems, apparatus for video processing are described. A method for processing video includes performing a conversion between a video and a bitstream of the video according to a format rule, and wherein the format rule specifies whether a syntax element in a sequence parameter set (SPS) based on a value of a general constraint flag.

Abstract: A method of video processing includes determining a classification of samples of a block in a video picture of a video according to a rule, wherein the video picture is divided into multiple regions, and wherein the rule disallows use of neighboring samples of a current sample across one or more boundaries of the multiple regions for the classification. The one or more boundaries of the multiple regions includes a virtual boundary for an adaptive loop filtering (ALF) process. The method also includes performing a conversion between the block and a bitstream representation of the video by selectively applying the ALF process according to the classification.