Abstract: Disclosed in embodiments of the present application are an encoding method, a decoding method, a code stream, an encoder, a decoder, and a storage medium. The decoding method is applied to the decoder, and comprises: decoding a bitstream, to determine a reconstruction motion parameter of a current image; determining an initial prediction image feature of the current image according to the reconstruction motion parameter; and performing enhancement processing on the initial prediction image feature according to at least one reference image, to determine a target prediction image feature of the current image, wherein the target prediction image feature is used for determining a reconstructed image of the current image.

Abstract: Disclosed are a coding method, a decoding method, and a decoding device. The decoding method includes: determining a reference sample value of a first color component of the current block; according to the reference sample value of the first color component of the current block, determining a weighting coefficient by means of a neural network model, wherein an input for the neural network model comprises the reference sample value of the first color component of the current block; according to the weighting coefficient and a reference sample value of a second color component of the current block, determining a predicted block of the second color component of the current block; and according to the predicted block, determining a reconstructed value of a sampling point of the second color component of the current block.

Abstract: A dummy light signal generation apparatus, which can be used in the communication field. The apparatus includes: a light source module configured to generate a first wavelength signal and a second wavelength signal, where the first wavelength signal has N first channels, and the second wavelength signal has M second channels; and a polarization beam combiner configured to polarize and combine the first wavelength signal and the second wavelength signal to output a dummy light signal, where the dummy light signal has N+M channels. A polarization state of a wavelength signal of a dummy light signal on any first channel is orthogonal to a polarization state of a wavelength signal of the dummy light signal on the second channel.

Abstract: The application discloses a picture prediction method, an encoder, a decoder and a computer storage medium. The method includes determining a prediction mode parameter of a current block; determining a reconstructed value of a first colour component of the current block and a value of a reference colour component of the current block, in response to the prediction mode parameter indicating determining a prediction value of the current block by using an attention-based artificial neural network model (ANNM) mode; and predicting, according to the reconstructed value of the first colour component of the current block and the value of the reference colour component of the current block, a second colour component of the current block, to determine a prediction value of the second colour component of the current block.

Abstract: A positioning method for a ceiling vision robot are provided. The method includes: during a moving process, a ceiling vision robot acquiring a ceiling image in real time; acquiring existing road sign distribution information according to the ceiling image; determining whether to establish a new road sign, according to the existing road sign distribution information, if so, establishing a new road sign at a acquisition position of the ceiling image, if not, not establishing the new road sign at the acquisition position of the ceiling image; and monitoring the positioning effectiveness of an existing road sign according to the existing road sign distribution information, if the positioning of the existing road sign is effective, performing positioning by using pose information corresponding to the existing road sign, if the positioning of the existing road sign is ineffective, not performing positioning by using the pose information corresponding to the existing road sign.

Abstract: Provided is a home gateway service identification method, device and system, and the method includes: judging an access destination address of a terminal connected with the home gateway by a home gateway so as to identify the type of a service initiated by the terminal; if it is identified that the service initiated by the terminal belongs to IPTV services, routing the service to an IPTV network by the home gateway; and if it is identified that the service initiated by the terminal belongs to Internet services, forwarding the service to an Internet by the home gateway, and binding all remaining interfaces except the interfaces used by the terminal carrying the IPTV services with a public network. Two or more services can be accessed at the same time at one interface, the requirement of accessing a plurality of services at the same time by the television is met.

Abstract: A heat exchanger production line is provided, which includes a support frame, a fin conveying line, as well as a fin storing-fetching device, an end plate mounting device, a pipe inserting device and a nitrogen charging device which are arranged at corresponding positions of the fin conveying line. The fin storing-fetching device is arranged at one end of the fin conveying line. The fin storing-fetching device includes a storing-fetching bracket, a bottom plate, a lifting support plate and a feeding robot. A fin stack is transferred to the fin conveying line by the fin storing-fetching device, is then sequentially conveyed to corresponding stations to be processed along with the fin conveying line, ultimately forming a heat exchanger.

Abstract: A point cloud coding method, including: partitioning a point cloud, and determining a current coding block; determining a quantization parameter optimization enable identifier, a hierarchical level index, and a quantization parameter offset parameter of the current coding block; determining, according to the hierarchical level index and the quantization parameter offset parameter, a quantization step Qstep corresponding to a level of detail; and upon detecting that the quantization parameter optimization enable identifier is a first value, performing operations for one or more points included in the current coding block.

Abstract: A point cloud decoding method includes that: a decoder decodes a bitstream, and determines all planar flag information of a current node; in a case where the all planar flag information indicates that occupied child-nodes of the current node constitute planes in all of three preset spatial directions, the decoder decodes the bitstream to determine three pieces of plane position information of the current node in the three preset spatial directions and determines reconstructed geometry information of the current node; in a case where the all planar flag information indicates that occupied child-nodes of the current node do not all constitute planes in three preset spatial directions, the decoder decodes the bitstream to determine first planar flag information of the current node in a first spatial direction and second planar flag information of the current node in a second spatial direction, and determines reconstructed geometry information of the current node.

Abstract: A decoding method includes: determining a reference value of a first color component of a current block and a reference value of a second color component of the current block; determining a weighting coefficient according to the reference value of the first color component; determining a reference average value of the second color component according to the reference value of the second color component; determining a reference sample value of the second color component according to the reference value and the reference average value of the second color component; determining a predicted value of a sample of the second color component in the current block according to the reference average value and the reference sample value of the second color component, and the weighting coefficient; and determining a reconstructed value of the sample of the second color component in the current block according to the predicted value.

Abstract: A quick-change lifting welding head includes a support structure, a quick positioning structure arranged on the support structure, and an amplitude-transforming welding structure arranged on the quick positioning structure. The quick positioning structure includes a positioning chuck embedded in the support structure and a connecting disc arranged on the positioning chuck. The positioning chuck includes a chuck base and a chuck positioning cover. The chuck positioning cover is equipped with several connection positioning blocks for interfacing with the support structure and positioning holes for interfacing with the connecting disc. One side of the connecting disc is equipped with several connection posts that connect to the amplitude-transforming welding structure, while the other side features positioning posts that connect to the positioning holes.

Abstract: The present disclosure relates to an interaction method, device, electronic apparatus, storage medium and program product, and involves the technical field of artificial intelligence. The interaction method of the present disclosure comprises: displaying an interaction interface of a user and a first Agent; according to interaction information between the user and the first Agent, determining one or more interaction functions associated with the interaction information, wherein the one or more interaction functions are used to interact with the user based on an intention reflected in the interaction information; displaying operation controls of the one or more interaction functions; in response to the user's triggering of a target operation control in the operation controls of the one or more interaction functions, calling the interaction function corresponding to the target operation control to interact with the user.

Abstract: An inclined plate baffled A2O reactor with high oxygen transfer efficiency is proposed. The inclined plate baffled A2O reactor with high oxygen transfer includes a reactor body and a secondary sedimentation tank. The reactor body includes an anaerobic zone, an anoxic zone and a deep oxic zone which are arranged sequentially from top to bottom. An anaerobic-anoxic inclined plate is arranged between the anaerobic zone and the anoxic zone. An anoxic-oxic inclined plate is arranged between the anoxic zone and the deep oxic zone. The oxic zone communicates with the secondary sedimentation tank through a gravity pipeline. Microporous aerators are arranged at a bottom of the deep oxic zone.

Abstract: Provided is a mutant of CRISPR nuclease FnCpf1. Compared with wild-type FnCpf1, the CRISPR nuclease FnCpf1 has the following mutations: K671R/E566V/D751G/N508H/N637S, K671R/E566V/D751G/F570L/N634D/R755K, K671R/E566V/D751G/S518G/K639R, K671R/E566V/D751G/F570L/E686D, K671R/E566V/D751G/K613N/N637S/N534K/G664V, K671R/E566V/D751G/K613N/F570L/G664S/N637Y, K671R/E566V/D751G/K613N/Y724C/F570L, or K671R/E566V/D751G/K613N/Y724C/F570L/R690I/L662I. The coding gene of the mutant has higher editing efficiency and wider editing range than the wild-type FnCpf1.

Abstract: Systems and methods for integrating a messaging client application with a content management system are provided. In some examples, a method can include receiving messaging content at a content management system from a messaging client application via an application programming interface, the content management system and the messaging client application being on different cloud-based systems. The method can include associating the messaging content with a workspace in the content management system, the workspace including a plurality of users that are authorized to access the workspace to collaborate with each of the plurality of users. The method can further include providing access to the messaging content to the plurality of users that are authorized to access the workspace of the content management system. The method also can include embedding the messaging content in the workspace of the content management system.

Abstract: Provided are a coding method, a decoding method, a bitstream, a coder, a decoder and a storage medium. The method includes: determining a first BV parameter of a current block; on the basis of the first BV parameter, determining a first color-component reference sample and a second color-component reference sample which correspond to the current block, and based on the first color-component reference sample and the second color-component reference sample, establishing a mapping relationship between a first color component and a second color component; and based on the mapping relationship and a sample value of the first color component of the current block, determining a predicted value of the second color component of the current block. In this way, the accuracy of chroma prediction can be improved, the bit rate is reduced, and the codec efficiency can also be improved.

Abstract: The present invention discloses photosensitive chiral agent compound S, a cholesteric liquid crystal composition containing the photosensitive chiral agent compound S, and the use of the cholesteric liquid crystal composition in a liquid crystal display element and a liquid crystal display. The photosensitive chiral agent compound S has the properties of high HTP value, good solubility, and short switching time. The cholesteric liquid crystal composition comprising the photosensitive chiral agent compound S has high reflectance retention ratio, which ensures RGB color uniformity and does not require complicated pixel design; low viscosity, which ensures compatibility with existing large-scale panel fabrication processes; and fast UV-induced color switching speed, which results in reduced time during the UV process and lowered production costs. The photosensitive chiral agent compound S can be widely used in optical devices such as liquid crystal electronic books and outdoor and vehicle-mounted displays.