Abstract: A press plate module, a production line, and a control method are provided. The press plate module includes a press plate assembly and a mounting seat assembly. One of the mounting seat assembly and the press plate assembly is provided with a stop element, and the other is provided with a stop surface. The stop element is selectively extendable and retractable, and the press plate module includes a locked state and an unlocked state. In the locked state, the stop element is in an extended state and abuts against the stop surface, such that the press plate assembly is fixed with the mounting seat assembly, and the mounting seat assembly drives the press plate assembly to move, such that the press plate assembly presses against or separates from a battery. In the unlocked state, the stop element is in a retracted state and separated from the stop surface.

Abstract: This application provides an image encoding and decoding method and apparatus. The method may include: reading a first sub-image of a first frame of image from a first memory, and storing the first sub-image into a second memory, where the first memory is an off-chip memory, and the second memory is an on-chip memory; encoding a base layer of the first sub-image based on the first sub-image, to obtain a bitstream of the base layer of the first sub-image and a first reconstructed image; writing the first reconstructed image into the second memory; reading the first reconstructed image and the first sub-image from the second memory; and encoding a first enhancement layer of the first sub-image based on the first reconstructed image and the first sub-image, to obtain a bitstream of the first enhancement layer of the first sub-image and a second reconstructed image.

Abstract: Provided are a welding system and a spot check method for a welding system. The welding system includes a controller, a human-machine interface, and a welding device. The spot check method for a welding system includes: controlling a rangefinder in a welding device to perform ranging, along a first direction, of at least two posts in a battery product to be welded, so as to obtain a set of ranging values between the at least two posts and the rangefinder, the first direction being parallel to an optical axis of a laser galvanometer in the welding device, the rangefinder being calibrated based on a first position in the first direction, the first position being a position of a focal point of the laser galvanometer in the first direction, and the rangefinder being at a fixed distance from the laser galvanometer in the first direction.

Abstract: This application provides an image encoding and decoding method and apparatus. The method may include: reading a first sub-image of a first frame of image from a first memory, and storing the first sub-image into a second memory, where the first memory is an off-chip memory, and the second memory is an on-chip memory; encoding a base layer of the first sub-image based on the first sub-image, to obtain a bitstream of the base layer of the first sub-image and a first reconstructed image; writing the first reconstructed image into the second memory; reading the first reconstructed image and the first sub-image from the second memory; and encoding a first enhancement layer of the first sub-image based on the first reconstructed image and the first sub-image, to obtain a bitstream of the first enhancement layer of the first sub-image and a second reconstructed image.

Abstract: An image processing method and a codec are disclosed. The method includes: determining a quantized coefficient block obtained by quantizing a transform unit of an image; if quantized coefficients in the quantized coefficient block are all zeros, determining a quantized parameter threshold of the quantized coefficient block based on a base coefficient matrix for transforming the transform unit; and adjusting quantized coefficients at M locations in the quantized coefficient block based on the quantized parameter threshold. None of the adjusted quantized coefficients at the M locations is zero, and coefficients in a reconstructed residual coefficient block obtained by dequantizing and inversely transforming an adjusted quantized coefficient block are all zeros.

Abstract: An encoding method includes: an encoder obtains a reconstructed block of a base layer of a to-be-encoded picture block; calculates a difference between corresponding pixels in the to-be-encoded picture block and the reconstructed block of the base layer to obtain a residual block of an enhancement layer of the to-be-encoded picture block; determines a transform-block partitioning manner of the residual block of the enhancement layer; and performs transformation on the residual block of the enhancement layer based on the transform-block partitioning manner. This application can simplify a processing procedure for the encoder and improve encoding efficiency of the encoder. In addition, compression efficiency of the residual block can be improved more effectively by using an adaptive TU partitioning method.

Abstract: A press plate module, a production line, and a control method are provided. The press plate module includes a press plate assembly and a mounting seat assembly. One of the mounting seat assembly and the press plate assembly is provided with a stop element, and the other is provided with a stop surface. The stop element is selectively extendable and retractable, and the press plate module includes a locked state and an unlocked state. In the locked state, the stop element is in an extended state and abuts against the stop surface, such that the press plate assembly is fixed with the mounting seat assembly, and the mounting seat assembly drives the press plate assembly to move, such that the press plate assembly presses against or separates from a battery. In the unlocked state, the stop element is in a retracted state and separated from the stop surface.

Abstract: A method includes obtaining a current picture block, using a 4:4:4 sampling format for the current picture block. The current picture block includes three 2W×2H sample arrays, one 2W×2H sample array represents a first chrominance component, one 2W×2H sample array represents a second chrominance component, and one 2W×2H sample array represents a luminance component. The method further includes separately downsampling the first chrominance component and the second chrominance component of the current picture block to obtain a base layer picture block, where a 4:2:0 sampling format is used for the base layer picture block, obtaining a differential chrominance picture block based on the current picture block, where the differential chrominance picture block includes at least part of chrominance samples of the current picture block, encoding the base layer picture block to obtain a base layer bitstream, and encoding the differential chrominance picture block to obtain an enhancement layer bitstream.

Abstract: In a picture processing method, when receiving a first picture in a video stream, a decoder side determines, based on a base layer of the 1st sub-picture of the first picture, whether the first picture meets a first preset condition; and the decoder side sends a second picture within a display time period of the first picture for displaying if the first picture meets the first preset condition, where the second picture is a picture that is in the video stream and that is sent within a first display time period for displaying.

Abstract: Disclosed are an encoding/decoding method, apparatus, and system. In an implementation, the encoding method includes: encoding video information, where the video information includes M frames, the M frames include a first frame, a second frame, and a third frame, the second frame refers to the first frame, and the third frame refers to the second frame or the first frame, storing the first frame, the second frame, and the third frame in a buffer to obtain candidates of a long-term reference frame, and selecting a subset from the candidates based on a feedback signal as a long-term reference frame.

Abstract: Provided are a welding system and a spot check method for a welding system. The welding system includes a controller, a human-machine interface, and a welding device. The spot check method for a welding system includes: controlling a rangefinder in a welding device to perform ranging, along a first direction, of at least two posts in a battery product to be welded, so as to obtain a set of ranging values between the at least two posts and the rangefinder, the first direction being parallel to an optical axis of a laser galvanometer in the welding device, the rangefinder being calibrated based on a first position in the first direction, the first position being a position of a focal point of the laser galvanometer in the first direction, and the rangefinder being at a fixed distance from the laser galvanometer in the first direction.

Abstract: Example video frame processing methods and devices are described. One example video frame processing method includes detecting whether a first video frame is a scene switching frame. The method further includes, if the first video frame is the scene switching frame, continuing to display a second video frame, and switching display from the second video frame to the first video frame based on the first video frame meeting a preset display condition. The second video frame is a video frame that is last displayed before a bitstream of the first video frame is received.

Abstract: An image encoding method for ensuring quality of an encoded image includes: after obtaining a first image, an encoding device may obtain a first quantization parameter (QP) corresponding to each coding block in at least one coding block in the first image; and then encode each coding block in the at least one coding block based on the first QP corresponding to each coding block, to obtain first image data. The encoding device may determine, based on a quality parameter of each coding block in the first image data, a second QP corresponding to each coding block; and encode each coding block in the at least one coding block based on the second QP corresponding to each coding block, to obtain second image data.

Abstract: This application provides a picture encoding method and apparatus, and a picture decoding method and apparatus. The picture encoding method in this application includes: determining a reference frame number of a current picture based on channel feedback information, where the channel feedback information indicates information about a picture frame received by a decoder side; obtaining a first reference layer number set of a first picture frame corresponding to the reference frame number, where the first reference layer number set includes layer numbers of N1 layers, 1?N1<L1, and L1 indicates a total quantity of layers of the first picture frame; determining a reference layer number of the current picture based on the channel feedback information and the first reference layer number set; and performing video encoding on the current picture based on the reference frame number and the reference layer number to obtain a bitstream.

Abstract: This application provides an image encoding and decoding method and apparatus. The method may include: reading a first sub-image of a first frame of image from a first memory, and storing the first sub-image into a second memory, where the first memory is an off-chip memory, and the second memory is an on-chip memory; encoding a base layer of the first sub-image based on the first sub-image, to obtain a bitstream of the base layer of the first sub-image and a first reconstructed image; writing the first reconstructed image into the second memory; reading the first reconstructed image and the first sub-image from the second memory; and encoding a first enhancement layer of the first sub-image based on the first reconstructed image and the first sub-image, to obtain a bitstream of the first enhancement layer of the first sub-image and a second reconstructed image.

Abstract: This application provides encoding and decoding methods and apparatuses for an enhancement layer. The encoding method includes: an encoder obtains a reconstructed block of a base layer of a to-be-encoded picture block; calculates a difference between corresponding pixels in the to-be-encoded picture block and the reconstructed block of the base layer to obtain a residual block of an enhancement layer of the to-be-encoded picture block; determines a transform-block partitioning manner of the residual block of the enhancement layer; and performs transformation on the residual block of the enhancement layer based on the transform-block partitioning manner. This application can simplify a processing procedure for the encoder and improve encoding efficiency of the encoder. In addition, compression efficiency of the residual block can be improved more effectively by using an adaptive TU partitioning method.

Abstract: In a picture processing method, when receiving a first picture in a video stream, a decoder side determines, based on a base layer of the 1st sub-picture of the first picture, whether the first picture meets a first preset condition; and the decoder side sends a second picture within a display time period of the first picture for displaying if the first picture meets the first preset condition, where the second picture is a picture that is in the video stream and that is sent within a first display time period for displaying.

Abstract: An image encoding and decoding method includes obtaining a to-be-encoded image, where the to-be-encoded image is divided into a base layer and at least one enhancement layer; when feedback information sent by a decoder side is received, determining a reconstructed image corresponding to a frame sequence number and a layer sequence number indicated in the feedback information as a first reference frame, and performing inter encoding on the base layer based on the first reference frame to obtain a bitstream of the base layer; encoding the at least one enhancement layer to obtain a bitstream of the at least one enhancement layer; and sending the bitstream of the base layer and the bitstream of the at least one enhancement layer to the decoder side, where the bitstream of the base layer carries coding reference information.

Abstract: Embodiments of this application provide a video transmission method, apparatus, and system, to reduce an end-to-end transmission delay of video data. The method includes: A transmit end obtains a first frame of image of the video data, where the first frame of image includes a plurality of sub-images, and the plurality sub-images include a first sub-image and a second sub-image; the transmit end performs layered encoding on the first sub-image to obtain a plurality of layers of bitstreams of the first sub-image; the transmit end sends the plurality of layers of bitstreams of the first sub-image to a receive end; the receive end decodes the plurality of layers of bitstreams of the first sub-image to obtain the first sub-image.

Abstract: A data block encoding method and apparatus are provided. The data block encoding method includes: determining whether a data block includes an intensive edge region, where the intensive edge region is a region including an image distortion generated by ring noise, and the data block is a data block in a to-be-encoded image; and when the data block includes an intensive edge region, reducing a value of a quantization parameter used for encoding the data block, and encoding the data block by using a reduced value of the quantization parameter, or dividing the data block into multiple coding units of different sizes according to different coding layers, adjusting rate-distortion costs of the multiple coding units of different sizes, and encoding the data block by using a coding unit with a minimum rate-distortion cost obtained after the adjustment.