Abstract: A prediction mode determining method includes determining a split mode for a current picture block, determining whether a first picture subblock that meets a preset condition is obtained after the current picture block is split in the split mode, splitting the current picture block in the split mode to obtain a plurality of picture subblocks in response to determining that the first picture subblock is obtained after the current picture block is split, and determining that a same prediction mode is used for the plurality of picture subblocks. The plurality of picture subblocks comprise the first picture subblock. The prediction mode for the plurality of picture subblocks is an intra prediction mode or an inter prediction mode.

Abstract: Embodiments of this application disclose a picture prediction method and apparatus. The picture prediction method includes: determining whether a merge mode is used for a current picture block; when the merge mode is used for the current picture block, determining whether a level-1 merge mode is available for the current picture block; when the level-1 merge mode is unavailable, and a high-layer syntax element corresponding to a first merge mode indicates that the first merge mode is forbidden to be used, determining a second merge mode as a target merge mode used for the current picture block, where the first merge mode and the second merge mode are included in a level-2 merge mode; and predicting the current picture block based on the target merge mode. In the embodiments of this application, redundancy generated in a merge mode determining process can be reduced as much as possible.

Abstract: Disclosed are an inter prediction method based on an affine prediction mode and a related apparatus. The method includes: obtaining a predicted pixel value of a current affine block; obtaining an LIC flag of the current affine block, where the LIC flag is used to indicate whether local illumination compensation LIC is applied to the current affine block; and when the LIC flag indicates that LIC is applied to the current affine block, updating the predicted pixel value of the current affine block based on an update coefficient for LIC, to obtain an updated predicted pixel value of the current affine block.

Abstract: An electromagnetic valve and an air conditioning system are provided. The electromagnetic valve includes a valve sleeve and a valve body, the valve sleeve is inserted into the valve body and fixedly connected to the valve body; a spherical sealing member is capable of moving in a valve cavity in an axis of the valve sleeve and opening or sealing a valve port, and a first connecting pipe is fixedly connected to a side wall of the valve body, the first connecting pipe is in communication with the valve cavity, and the valve body is fixedly connected to a second connecting pipe extending along an axis of the valve body, the second connecting pipe is in communication with the valve port, an axis of the first connecting pipe is flush with an end of the valve port towards the spherical sealing member, or an axis of the first connecting pipe is arranged away from the second connecting pipe relative to an end of the valve port towards the spherical sealing member.

Abstract: The inter prediction method is provided, which includes: obtaining a predicted sample value of a current affine block; determining one or more luminance compensation blocks based on motion vectors of one or more subblocks of the current affine block; determining a linear model coefficient based on a first sample set and a second sample set, where the first sample set includes at least one reconstructed sample neighboring to an edge of the current affine block, the second sample set includes at least one reconstructed sample neighboring to an edge of the one or more luminance compensation blocks, and the sample in the first sample set is in a one-to-one correspondence with the sample in the second sample set; and updating the predicted sample value of the current affine block based on the linear model coefficient, to obtain an updated predicted sample value of the current affine block.

Abstract: An electromagnetic valve and an air conditioning system are provided. The electromagnetic valve includes a valve bonnet and a valve seat. The valve bonnet includes a large-diameter section and a small-diameter section, the small-diameter section extends into a mounting groove and is affixed to a groove wall of the mounting groove, and the large-diameter section abuts against the valve seat. A first sealing surface is formed by the large-diameter section abuts against the valve seat, and a second sealing surface is formed by the small-diameter section is affixed to the groove wall of the mounting groove. The valve bonnet and the valve seat are connected in a hard sealing connection manner at the first sealing surface, and the valve bonnet and the valve seat are connected in a soft sealing connection manner at the second sealing surface.

Abstract: A decoding method includes decoding a bitstream to obtain a first feature map, where a resolution of the first feature map is lower than a resolution of an original picture; and reconstructing a second feature map based on a first neural network, to obtain a reconstructed picture, where a resolution of the second feature map and a resolution of the reconstructed picture each are a target resolution, the target resolution is lower than the resolution of the original picture, and the second feature map is the first feature map, or the second feature map is a feature map obtained by processing the first feature map based on a second neural network.

Abstract: A video encoder, a video decoder, and a corresponding method, where the method includes, when a plurality of preset conditions are satisfied, performing bi-directional optical flow (BDOF) processing on a current picture block to obtain a predicted sample value of the current picture block, where the plurality of preset conditions include at least a condition that a height (H) of the current picture block is greater than or equal to 8, a width (W) of the current picture block is greater than or equal to 8, and a product of W and H is greater than 128. Thus encoding/decoding complexity and prediction accuracy can be balanced to some extent.

Abstract: The present application disclose a picture processing method and apparatus, which are applicable to a video picture processing scenario. The method includes: obtaining at least two transform coefficient blocks, where each of the at least two transform coefficient blocks includes at least two transform coefficients that correspond to different frequency points; determining, according to a preset frequency point scanning order, the transform coefficients that are in the at least two transform coefficient blocks and that correspond to a selected frequency point; and encoding, according to a preset coefficient scanning order, each transform coefficient corresponding to the selected frequency point, to obtain picture encoded information.

Abstract: Embodiments of this application disclose a picture reconstruction method and apparatus for a video picture. The picture reconstruction method includes: obtaining a prediction mode of a current coding unit, and/or obtaining a prediction partition mode of the current coding unit, where the current coding unit includes a luma coding block and a chroma coding block, and the prediction partition mode is a mode of splitting the current coding unit into prediction blocks or prediction units; obtaining a transform block of the current coding unit based on the prediction partition mode and/or the prediction mode; and generating a reconstructed picture block of the current coding unit based on the transform block. According to the method in the embodiments of this application, video coding efficiency can be improved.

Abstract: Provided herein is a process for producing furfural from lignocellulosic biomass or an extract thereof, such as an extract rich in saccharides, using solid zinc sulfate-rich catalysts to catalyse conversion to furfural. Also provided herein are zinc sulfate-rich catalysts, and processes for producing zinc sulfate and zinc sulfate-rich catalysts from tyre char.

Abstract: A picture prediction method includes: determining whether a merge mode is used for a current picture block; when the merge mode is used for the current picture block, determining whether a regular merge mode is available; when the regular merge mode is unavailable, and a high-layer syntax element sps_triangle_enabled_flag corresponding to a triangle partition mode (TPM), indicates that the TPM is forbidden to be used, determining a combined intra and inter prediction (CIIP) mode as a target merge mode used for the current picture block and predicting the current picture block based on the target merge mode.

Abstract: A context modeling method includes: determining, for a current block, whether a first preset condition is satisfied and whether a second preset condition is satisfied, where the first preset condition is a preset condition related to a first neighboring block neighboring to the current block in a first direction, the second preset condition is a preset condition related to a second neighboring block neighboring to the current block in a second direction; determining a subclass index of a context model of a first flag of the current block based on the height and the width of the current block; and determining the context model of the first flag of the current block based on a satisfaction status of the first preset condition, a satisfaction status of the second preset condition, and the subclass index of the context model of the first flag.

Abstract: A video encoder, a video decoder, and a corresponding method, where the method includes, when a plurality of preset conditions are satisfied, performing bi-directional optical flow (BDOF) processing on a current picture block to obtain a predicted sample value of the current picture block, where the plurality of preset conditions include at least a condition that a height (H) of the current picture block is greater than or equal to 8, a width (W) of the current picture block is greater than or equal to 8, and a product of W and H is greater than 128. Thus encoding/decoding complexity and prediction accuracy can be balanced to some extent.

Abstract: An image prediction method, apparatus, and system, a device, and a storage medium are provided. The method includes: (401) obtaining a split mode of a current node, where the current node is an image block in a coding tree unit in a current image; (402) determining, based on the split mode of the current node and a size of the current node, whether the current node satisfies a first condition; and (403) when it is determined that the current node satisfies the first condition, performing intra prediction on all coding blocks belonging to the current node, to obtain predictors of all the coding blocks belonging to the current node.

Abstract: An electromagnetic valve and an air conditioning system are provided. The electromagnetic valve includes a valve bonnet and a valve seat. The valve bonnet includes a large-diameter section and a small-diameter section, the small-diameter section extends into a mounting groove and is affixed to a groove wall of the mounting groove, and the large-diameter section abuts against the valve seat. A first sealing surface is formed by the large-diameter section abuts against the valve seat, and a second sealing surface is formed by the small-diameter section is affixed to the groove wall of the mounting groove. The valve bonnet and the valve seat are connected in a hard sealing connection manner at the first sealing surface, and the valve bonnet and the valve seat are connected in a soft sealing connection manner at the second sealing surface.

Abstract: This application provides picture or audio encoding and decoding methods and apparatuses, and relates to the field of artificial intelligence (AI)—based picture or audio encoding and decoding technologies, and specifically, to the field of neural network-based picture feature map or audio feature variable encoding and decoding technologies. The encoding method includes: obtaining a to-be-encoded target, where the to-be-encoded target includes a plurality of feature elements, and the plurality of feature elements include a first feature element. The method further includes: obtaining a probability estimation result of the first feature element; determining, based on the probability estimation result of the first feature element, whether to perform entropy encoding on the first feature element; and performing entropy encoding on the first feature element only when it is determined that entropy encoding needs to be performed on the first feature element.

Abstract: A method for displaying a message box, a terminal device and a non-transitory computer-readable storage medium are disclosed. The method may be performed by an Android system operated terminal device, the Android system may include an application layer, an application framework layer, and NMS; and the method may include, acquiring, a context object corresponding to an application, and creating a message box object, in response to a start of the application when the terminal device is connected with a screen external to the terminal device; adding the message box object into the NMS, through a preset enqueue interface, reading the screen identity in the message box object through a set screen interface; and displaying the message box object on the external screen corresponding to the screen identity through the NMS.

Abstract: Embodiments include a picture reconstruction method and apparatus for a video picture. The picture reconstruction method includes: obtaining a prediction mode of a current coding unit, and/or obtaining a prediction partition mode of the current coding unit, where the current coding unit includes a luma coding block and a chroma coding block, and the prediction partition mode is a mode of splitting the current coding unit into prediction blocks or prediction units; obtaining a transform block of the current coding unit based on the prediction partition mode and/or the prediction mode; and generating a reconstructed picture block of the current coding unit based on the transform block. According to the method in the embodiments, video coding efficiency can be improved.

Abstract: Electronic devices and accessory devices designed for communication with electronic devices are disclosed. An accessory device suitable for use with an electronic device can receive the electronic device. Subject to authentication, the electronic device can read information stored on the accessory device through respective wireless communication circuitry of the electronic device and the accessory device. For example, the accessory device can store information related to the material makeup of the accessory device, dimensional information of the accessory device, and other integrated features. This information can be read and received by the electronic device. As a result, the electronic device can adjust a control system (that regulates thermal energy generation) by increasing a set point temperature that allows one or more processors to operate in a manner consistent with additional thermal energy generation.