Abstract: Devices, systems and methods for temporal prediction of parameters in non-linear adaptive loop filtering are described. In an exemplary aspect, a method for visual media processing includes configuring, for a current video block, one or more parameters of a clipping operation that is part of a non-linear filtering operation; and performing, based on the one or more parameters, a conversion between the current video block and a bitstream representation of the current video block, wherein the one or more parameters is coded in accordance with a rule.

Abstract: This document describes techniques, apparatuses, and systems that can implement auction-based cooperative perception for autonomous and semi-autonomous driving systems. The described techniques, apparatuses, and systems cooperatively use perception systems of an autonomous or semi-autonomous vehicle (AV) in a fleet of connected AVs to provide perception data to the entire fleet. An AV of the fleet is selected to act as an auction system (e.g., an auctioneer) and sends an announcement offering perception tasks to the fleet for bidding. The AVs of the fleet determine whether they have the communication and computational capabilities to perform the tasks and, if so, submit bids to perform one or more tasks. The auctioneer awards the tasks, and the bid-winning AV(s) perform the tasks and update the fleet. In this way, the described techniques, apparatuses, and systems can provide perception services with increased coverage and quality, which can make autonomous and semi-autonomous driving systems safer.

Abstract: A method of video processing includes: deriving, from a set of neighboring blocks, a motion prediction of a current block which can be split into multiple sub-blocks; and performing a conversion between the current block and a bitstream representation of the current block using the derived motion prediction, the motion prediction being applied to the current block on a basis of a block level instead of on a sub-block level.

Abstract: An electric oil pump includes a pump housing provided with an a first cavity and a second cavity; a first rotor assembly disposed in the first cavity; a stator assembly and a second rotor assembly that are disposed in the second cavity; an electric control board assembly; an isolating member, where the stator assembly is disposed at a first side of the isolating member, the electric control board assembly is disposed at a second side of the isolating member; and a wiring terminal fixedly connected to the isolating member; where a connecting position between the wiring terminal and the isolating member is sealed and a connecting position between the isolating member and the pump housing is sealed. The electric oil pump can prevent working medium from affecting the performance of the electric control board assembly.

Abstract: A method for video processing is provided. The method includes determining, for a conversion between a current video block of a video that is a chroma block and a coded representation of the video, parameters of a cross-component linear model (CCLM) based on two or four chroma samples and/or corresponding luma samples; and performing the conversion based on the determining.

Abstract: Video coding and decoding in which the bitstream is generated using affine motion compensation mode are described. One example includes generating, for a reconstruction of a current video unit, a list of affine motion vector prediction candidates in which each candidate in the list is calculated without using a clipping operation, wherein the clipping operation limits a magnitude of the candidate motion vectors to a range; and performing the reconstruction of the current video unit using the list of affine motion vector prediction candidates.

Abstract: A video processing method is provided to include: determining, based on a position rule, whether a local illumination compensation (LIC) tool is enabled for a conversion between a current block in a video region of a video and a coded representation of the video, and performing the conversion based on the position rule. The position rule specifies that the LIC tool is enabled for blocks on boundaries of the video region and disabled for blocks inside the video region and the LIC tool includes using a linear model of illumination changes in the current block during the conversion.

Abstract: A method for video processing includes: determining, that the video block is split into a plurality of sub-blocks based on a condition associated with the video block, refining motion information of each sub-block using a motion refinement process, the motion refinement process being a one-step or an iterative multi-step refinement process; and performing a video processing on the video block based on the refined motion information of each sub-block.

Abstract: A preset three-stage adjustable downhole choke with choking and pressure measurement functions includes an intake assembly for natural gas filtration, an electrically-controlled telescopic assembly for positioning and clamping the downhole choke with a prefabricated seating nipple, and a three-stage choking assembly for natural gas choking and depressurization. The intake assembly, the electrically-controlled telescopic assembly, and the three-stage choking assembly are sequentially communicated from bottom to top. A first-stage control choke, a second-stage adjustable control choke, and a third-stage control choke are sequentially provided in a gas passage of the three-stage choking assembly from bottom to top. The preset three-stage adjustable downhole choke features convenient installation and removal, three-stage choking and depressurization, and an adjustable orifice diameter of a control choke, and can achieve different choking and depressurization effects.

Abstract: Methods of enabling and disabling a decoder-side motion vector refinement (DMVR) video decoder and/or encoder are described. One example method includes determining a width (W) and a height (H) of a video block, making a determination, based on a condition of the video block, between enabling and disabling a decoder side motion vector refinement step for a conversion between the video block and a coded representation of the video block, in a case that the determination is enabling, performing the conversion by enabling the decoder side motion vector refinement step; and in a case that the determination is disabling, performing the conversion by disabling the decoder side motion vector refinement step, wherein the decoder side motion vector refinement step includes refining value of a motion vector signaled in the coded representation and using the refined value during the conversion.

Abstract: A method of video processing includes determining, for a conversion between a video region of a video and a bitstream representation of the video, to correct chroma samples of the video region using a cross-component adaptive loop filter (CC-ALF) process based on filtering of luma sample differences; and performing the conversion based on the determining.

Abstract: A method of visual media processing, including: determining, fora conversion between a current video block of a visual media data and a bitstream representation of the visual media data, that a partitioning mode coding tool is disabled for the conversion based on a rule that depends on a dimension of the current video block; and performing the conversion based on the determining.

Abstract: For the isolating of nanocrystals from a lignocellulose- or chitin-containing starting material, the starting material is exposed to an oxidative effect of periodate anions in an aqueous suspension. The pH value of the aqueous suspension is adjusted to greater than pH 7.0. The periodate anions are provided in a quantity of at least 5 mol per kg of the starting material, and the starting material is exposed to the oxidative effect of the periodate anions in the aqueous suspension for a period of at least one day.

Abstract: An example method of video processing includes determining, for a conversion between a current block of a current picture of a video and a bitstream of the video, whether to disable a coding tool for the current block; and performing the conversion based on the determining, wherein the coding tool is disabled when a dimension of a reference picture of one or more reference pictures of the current block is different from a dimension of the current picture, or a dimension of a scaling window in a reference picture of one or more reference pictures of the current block is different from a dimension of a scaling window in the current picture.

Abstract: In a representative aspect, a method for processing pictures includes segmenting a picture into one or multiple picture segments, determining that a first block of a picture segment covers at least one region that is outside a border of the picture segment, wherein a size of the first block is M×N pixels, selecting a second block of size K×L pixels and where (K?M and L<N) or (K<M and L?N) and the second block falls entirely within the picture segment, and processing, using a partition tree, the border of the picture segment, wherein the partition tree is based on the size of the second block, wherein the processing includes splitting the second block into two or three sub-blocks without an indication on the splitting.

Abstract: Methods, systems, and devices for media processing are described. One example method of processing digital media includes performing a conversion between a media segment and a bitstream of the media segment, the conversion conforming to a format rule and an encryption rule, and the format rule specifying that an indication of an integrity of a portion of the media segment is signaled in the bitstream. In an example, the media segment is a video segment, an audio segment, or an image.

Abstract: A method of video processing is described. The method includes determining, for a conversion between a current video block of a video picture of a video and a coded representation of the video, whether or how to reset reference sample values of a reference region of the video picture used for predicting the current video block according to a rule; and performing the conversion based on the determining.

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 first determination whether a luma video block of a video is coded using a matrix based intra prediction (MIP) mode; performing a second determination that the luma video block is applicable for determining a chroma intra mode for a current chroma video block of the video; performing, based on the first determination and the second determination, a third determination about the chroma intra mode to be used for the current chroma video block; and performing, based on the third determination, a conversion between the current chroma video block and a bitstream representation of the current chroma video block.

Abstract: A method of video processing is provided to comprise: performing a conversion between a current video block of a video and a bitstream representation of the video, wherein, during the conversion, a use of a geometric partitioning mode is allowed for the current video block, and wherein parameters of the geometric partitioning mode are computed using a set of angles including a first number of angles that is less than a first threshold value and/or a set of distances including a second number of distances that is less than a second threshold value.

Abstract: A method implemented by a video coding apparatus. The method includes selecting a neural network (NN) filter model from a plurality of NN filter model candidates for each video unit. The NN filter model selected for a first video unit is different than the NN filter model selected for a second video unit. The method also includes converting between a video media file and a bitstream based on the one or more NN filter models selected for the video unit. A corresponding video coding apparatus and non-transitory computer readable medium are also disclosed.