Abstract: Devices, systems and methods for digital video processing, which includes intra mode coding based on history information, are described. In a representative aspect, a method for video processing includes selecting, for a conversion between a current block of visual media data and a bitstream representation of the current block, a first intra prediction mode based on at least a first set of history intra coding information that includes statistical information of a set of intra prediction modes, and performing the conversion based on the first intra prediction mode.

Abstract: An apparatus includes processing circuitry for video decoding. The processing circuitry locates luma units of a luma coding unit that are co-located with chroma units of a chroma coding unit, and then determines a popularity of an intra block copy mode in the luma units. Further, the processing circuitry determines a block vector for a chroma unit in the chroma coding unit when the popularity meets a requirement, and reconstructs at least one sample of the chroma unit according to the block vector.

Abstract: Techniques are described related to output and removal of decoded pictures from a decoded picture buffer (DPB). The example techniques may remove a decoded picture from the DPB prior to coding a current picture. For instance, the example techniques may remove the decoded picture if that decoded picture is not identified in the reference picture set of the current picture.

Abstract: A system and method for measuring health parameters of a subject is disclosed. The system and method are based on a mirror; an image acquisition unit configured with the mirror, and comprising a thermal sensor for capturing thermal images or videos of a body part of the subject; and a processing unit to receive data packets associated with the captured thermal images or videos from the image acquisition unit to identify a region of interest of the body part in each frame of the captured thermal images and videos. Further, the processing unit extracts attributes associated with a heat intensity variation from the identified region of interest region, and compares the extracted attributes with a predetermined set of reference data to measure risk scores associated with the health parameters of the subject based on the comparison. The measured risk scores are displayed by a display unit.

Abstract: An image decoding method includes: deriving an L0 motion vector and a L1 motion vector of the current block; deriving prediction samples of the current block based on the L0 motion vector and the L1 motion vector; and generating reconstructed samples of the current block based on the prediction samples. Deriving the prediction samples includes applying bi-directional optical flow (BDOF) to the current block based on whether the condition for applying BDOF to the current block is satisfied, and the application condition of the BDOF includes a condition whereby the values of L0 luma weighted prediction flag information and L1 luma weighted prediction flag information are both zero, where the a value of each of the L0 luma weighted prediction flag information and L1 luma weighted prediction flag information being 0 represents that a weight factor for each of a L0 and L1 prediction luma components does not exist, respectively.

Abstract: In an example, a method of decoding video data includes generating a residual block of a picture based on a predicted residual block including reconstructing one or more residual values of the residual block based on one or more predicted residual values of the residual block. The method also includes generating a current block of the picture based on a combination of the residual block and a prediction block of the picture.

Abstract: A wireless substrate-like sensor for teaching transfer coordinates to a robotic substrate handling system is provided. The sensor includes a base portion sized and shaped like a substrate handled by the robotic substrate handling system. An electronics housing is coupled to the base portion. A power module is disposed within the electronics housing and configured to power components of the sensor. At least one edge camera is disposed near an edge of the base portion. The at least one edge camera has a field of view that images an alignment feature of the object within the field of view of the at least one edge camera of the wireless substrate-like sensor. A controller is disposed within the electronics housing and is coupled to the at least one edge camera. The controller is configured to obtain an image from the at least one edge camera and determine a location of the alignment feature and provide the determined location to the robotic substrate handling system.

Abstract: A video decoding method comprises: deriving L0 and L1 motion vectors of a current block; deriving decoder-side motion vector refinement (DMVR) flag information indicating whether to apply a DMVR to the current block; when the DMVR flag information indicates that the DMVR is to be applied to the current block, deriving refined L0 and L1 motion vectors based on the L0 and L1 motion vectors by applying the DMVR to the current block; deriving prediction samples of the current block based on the refined L0 and L1 motion vectors; and generating reconstructed samples of the current block based on the predicted samples, wherein deriving DMVR flag information comprises deriving the DMVR flag information by applying the DMVR to the current block when the height of the current block is 8 or more, and when the values of L0 and L1 luma weighted prediction flag information are both 0.

Abstract: The present disclosure describes techniques for coding and decoding video in which a plurality of coding hypotheses are developed for an input pixel block of frame content. Each coding hypothesis may include generation of prediction data for the input pixel block according to a respective prediction search. The input pixel block may be coded with reference to a prediction block formed from prediction data derived according to plurality of hypotheses. Data of the coded pixel block may be transmitted to a decoder along with data identifying a number of the hypotheses used during the coding to a channel. At a decoder, an inverse process may be performed, which may include generation of a counterpart prediction block from prediction data derived according to the hypothesis identified with the coded pixel block data, then decoding of the coded pixel block according to the prediction data.

Abstract: An example apparatus includes a first line buffer and a second line buffer, where each memory location in the first line buffer and the second line buffer corresponds to a row or column of a palette token block. The first line buffer may store two of the neighboring palette token values (e.g., above and left palette token values), and the second line buffer may store one of the neighboring palette token value (e.g., above-left). As a video coder is coding palette token values, the video coder may shift values stored in the first line buffer to the overwrite a memory location in the second line buffer, and overwrite values stored in the first line buffer based in part on the row or column of the palette token block to which the memory locations in the first and second line buffer correspond.

Abstract: Devices, systems and methods for encoding and decoding digital video are described. In a representative aspect, a method for video processing includes maintaining one or more tables of intra prediction mode candidates based on one or more previous video blocks of a video and performing a conversion between a current video block of the video and a bitstream representation of the video using the one or more tables of intra prediction mode candidates.

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 according to a rule, where the rule specifies a relationship between samples of the current video block and matrices or offset values applied in a matrix weighted intra prediction (MIP) mode during the conversion, and where the MIP mode includes determining a prediction block of the current video block by performing, on previously coded samples of the video, a boundary downsampling operation, followed by a matrix vector multiplication operation, and selectively followed by an upsampling operation.

Abstract: An embodiment of the present disclosure discloses an intra-prediction-based encoding and decoding method, apparatus and filter, and belongs to a video coding technical field.

Abstract: Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. An apparatus includes processing circuitry that obtains a gate flag for each of at least one constraint information group in constraint information signaled in a coded video bitstream. Each gate flag indicates whether a constraint information group of the at least one constraint information group corresponding to the respective gate flag is present in the constraint information. The constraint information is for a subset of coding blocks in the coded video bitstream. Whether the constraint information group of the gate flag is present in the constraint information is determined based on the gate flag. The constraint information group includes at least one constraint flag for the subset of coding blocks. Prediction information for the subset of coding blocks is determined based on whether the constraint information group of the gate flag is present in the constraint information.

Abstract: A method of encoding a video data signal (15) is provided, together with a method for decoding. The encoding comprises providing color information (51) for pixels in an image, providing a depth map with depth information (52) for the pixels, providing transition information (56, 57, 60, 70, 71) being representative of a width (63, 73) of a transition region (61, 72) in the image, the transition region (61, 72) comprising a depth transition (62) and blended pixels in which colors of a foreground object and a background object are blended, and generating (24) the video data signal (15) comprising encoded data representing the color information (51), the depth map (52) and the transition information (56, 57, 60, 70, 71). The decoding comprises using the transition information (56, 57, 60, 70, 71) for determining the width (63, 73) of the transition regions (61, 72) and for determining alpha values (53) for pixels inside the transition regions (61, 72).

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 generating, for a conversion between a current video block of a video and a coded representation of the current video block, a most probable mode (MPM) list based on a rule, where the rule is based on whether a neighboring video block of the current video block is coded with a matrix based intra prediction (MIP) mode, and performing the conversion between the current video block and the coded representation of the current video block using the MPM list, where the conversion applies a non-MIP mode to the current video block, and where the non-MIP mode is different from the MIP mode.

Abstract: According to an embodiment, an encoder is configured to ensure that for each long-term picture of a RPS of a picture i the value of a flag referred to as delta_poc_msb_present_flag[i] is equal to 1 when there are at least two reference pictures in a decoded picture buffer with lsb's of the POC referred to as pic_order_cnt_lsb equal to the lsb's of the respective long-term picture i denoted POC lsbLt[i]. When the delta_poc_msb_present_flag is equal to 1, the long-term picture is indicated by the full POC.

Abstract: The present invention allows for display of an image generated from HDR video data on an LDR monitor in good condition. Applying a predetermined level-mapping curve to the input video data (HDR video data) in a first range of levels provides the video data for transmission (LDR video data) in a second range of levels narrower than the first range of levels. The video data for transmission is transmitted together with the auxiliary information used to convert the levels on the receiving end.

Abstract: Devices, systems and methods for encoding and decoding digital video are described. In a representative aspect, a method for video processing includes maintaining one or more tables of intra prediction mode candidates based on one or more previous video blocks of a video and performing a conversion between a current video block of the video and a bitstream representation of the video using the one or more tables of intra prediction mode candidates.

Abstract: A method of reconstructing in a decoder a coded enhancement layer picture, is performed by at least one processor and includes decoding at least one independent picture header of a coded picture of a reference layer, the coded picture of the reference layer being referenced by the coded enhancement layer picture, and decoding a dependent picture header of the coded enhancement layer picture. The method further includes performing picture header prediction including either one or both of predicting at least one value of at least one syntax element of the dependent picture header from at least one value of at least one corresponding syntax element of the at least one independent picture header; and inferring at least one value of a non-present syntax element of the dependent picture header to be equal to at least one value of a present syntax element of the at least one independent picture header.