Abstract: A video decoding method and apparatus, a video coding method and apparatus, a storage medium, and an electronic device. The video decoding method includes: performing entropy decoding on a coding block of a video image frame to obtain a quantization coefficient block of residual data corresponding to the coding block; calculating quantization coefficients in a specified region in the quantization coefficient block to obtain a quantization coefficient statistics value; and determining, according to the quantization coefficient statistics value, whether to skip an inverse transform process.

Abstract: A method for processing hybrid automatic repeat request (HARQ) feedback is disclosed. A base station, such as a gNB, triggers one-shot HARQ acknowledgement (ACK) feedback in response to the detected triggering condition. The base station obtains multiple versions of HARQ ACK bits for a transport unit from the one-shot HARQ ACK feedback, and consolidates the versions of HARQ ACK bits for the transport unit when a subsequently transmitted version among the versions of the HARQ ACK bits is inconsistent with a previous version among the versions of the HARQ ACK bits.

Abstract: The invention relates to a camera (2) for a motor vehicle (1), including a housing (5) configured to shield electromagnetic radiation at least in certain areas, including a circuit board (16) disposed in the housing (5), and including an interface device (11) for connecting the camera (2) to the motor vehicle (1), wherein the interface device (11) is electrically connected to the circuit board (16), wherein the interface device (11) includes a coaxial plug (12) with an inner conductor (13) and an outer conductor (14) and the camera (2) has a connecting device (17) for electrically connecting the outer conductor (14) with the housing (5), wherein the connecting device (17) comprises at least one separate and electrically conductive rubber piece (18), which is arranged between the outer conductor (14) and the housing (5) and contacts the outer conductor (14) and the housing (5).

Abstract: Provided is a wide-angle lens assembly including, in an order from an object side to an image side along an optical axis, a first lens element with negative refractive power, having an image-side surface being concave; a second lens element with negative refractive power, having an image-side surface being concave; a third lens element with negative refractive power; a fourth lens element with positive refractive power; a fifth lens element with a refractive power; a sixth lens element with positive refractive power, having an object-side surface being convex and an image-side surface being convex; a seventh lens element with negative refractive power; and an eighth lens element with positive refractive power, having an object-side surface being convex and an image-side surface being convex. The wide-angle lens assembly is characterized by small size, excellent resolution and great environmental tolerance.

Abstract: Embodiments of the disclosure provide methods and systems for representation learning from a biomedical image with a sparse convolution. The exemplary system may include a communication interface configured to receive the biomedical image acquired by an image acquisition device. The system may further include at least one processor, configured to extract a structure of interest from the biomedical image. The at least one processor is also configured to generate sparse data representing the structure of interest and input features corresponding to the sparse data. The at least one processor is further configured to apply a sparse-convolution-based model to the biomedical image, the sparse data, and the input features to generate a biomedical processing result for the biomedical image. The sparse-convolution-based model performs one or more neural network operations including the sparse convolution on the sparse data and the input features.

Abstract: A method, an apparatus, an electronic device, and a computer-readable storage medium for processing live streaming information. The method includes: presenting at least one question of a live streaming and an answering function entry corresponding to the at least one question; each question being obtained by aggregating questions asked by at least two viewers in a live streaming room of a host; presenting, in response to an answering operation for a target question triggered based on the answering function entry, a receiving process of corresponding answer information; and transmitting, in response to an answering completion instruction for the target question, the received answer information of the target question to a viewer end.

Abstract: A pressure detection module and an electronic device are provided. The pressure detection module is disposed between a support and an inner surface of a housing of the electronic device. The pressure detection module includes a first electrode, a second electrode, and a controller. The first electrode is fixed to an inner surface of a force input region of the housing, the second electrode is fixed to the support, and the second electrode is disposed opposite to the first electrode. The force input region of the housing is configured to drive the first electrode to move towards the second electrode based on a received external pressure. The controller is configured to determine a pressure detection result of the external pressure based on a capacitance change between the first electrode and the second electrode. The pressure detection module occupies small space in the electronic device, and is easy to mount.

Abstract: The present disclosure relates to an image processing method and apparatus, an electronic device and a storage medium. The method includes performing feature extraction on an image to be processed to obtain a first feature map of the image to be processed and performing weight prediction on the first feature map to obtain a weight feature map of the first feature map. The weight feature map includes weight values of feature points in the first feature map. The method further includes performing feature value adjustment on the feature points in the first feature map based on the weight feature map to obtain a second feature map and determining a processing result of the image to be processed according to the second feature map. Embodiments of the present disclosure may improve the image processing accuracy.

Abstract: An intelligent start and stop massager is provided, which includes a first shell, a connecting spring, and a second shell; the first shell is connected to the second shell through the connecting spring; a vibration motor is arranged in the first shell; the vibration motor is in driving connection with a deflection member; a battery, a main control board and a touch switch are arranged in the second shell; the main control board is in conduction connection with the vibration motor, the battery and the touch switch; a first rubber layer is wrapped on an outer side of the first shell; and a second rubber layer is wrapped on an outer side of the second shell.

Abstract: A method, apparatus, computer device and storage medium for distributed training of a machine learning model. The method includes: obtaining more than one group of training samples, and processing each group of training samples separately according to a current training parameter of a machine learning model to obtain a corresponding parameter gradient; determining a local gradient of a current training process based on the parameter gradient corresponding to each group of training samples; transmitting the local gradient of the current training process to a parameter node; and obtaining the updated training parameter from the parameter node, and performing model training on the machine learning model based on the updated training parameter until a training end condition is met.

Abstract: A double-layer lumen stent (100) includes a main body lumen stent (10) and an outer-layer skirt stent (20) surrounding an outer wall of the main body lumen stent (10); the outer-layer skirt stent (20) includes a support structure (21) and a cover layer (22) arranged on the support structure (21); one end of the outer-layer skirt stent (20) is connected to the outer wall of the main body lumen stent (10); the other end of the outer-layer skirt stent (20) is an opening structure (24) composed of the support structure (21); and the cover layer (22) is formed into an oblique cut shape at an edge of the opening structure (24).

Abstract: The present disclosure relates to a virtual drum kit device. The virtual drum kit device includes a motion capture device and a drum sound processing device separated from each other; where, the motion capture device includes at least two drumsticks, the drumstick including a first cover body, as well as a first battery, a first control printed circuit board assembly (PCBA) board and a vibration motor which are arranged in the first cover body, the first control PCBA board being connected to the battery and the vibration motor separately, and being capable of transmitting an RF signal to the drum sound processing device according to a motion instruction captured by the drumstick, the drum sound processing device includes a second cover body, as well as a second battery and a second control PCBA board which are arranged in the second cover body.

Abstract: A control method and device for bidirectional communication are provided. A handshake between the master and slave communication units is realized by sending the training sequence. The master communication unit is controlled to obtain control information from the ECU. The control information is packaged into the custom package, and the custom package is encoded. The master communication unit is controlled to send the custom package to the slave communication unit. The slave communication unit decodes, verifies and corrects the custom package. The slave communication unit feeds back the correct message to the master communication unit if the custom package is verified to be correct, else feeds back the error message to the master communication unit. The master communication unit resends the custom package to the slave communication unit if it receives the error information or does not receive any feedback information within the preset time period.

Abstract: A data processing method includes acquiring video frame data including one or more video frames and audio data of a video, and determining position attribute information of a target object in the acquired one or more video frames, the target object being associated with the audio data. The method also includes acquiring a channel encoding parameter associated with the position attribute information, and performing azimuth enhancement processing on the audio data according to the channel encoding parameter to obtain enhanced audio data. Apparatus and non-transitory computer-readable storage medium counterpart embodiments are also contemplated.

Abstract: The present invention discloses a UWB base station and a positioning method therefor. The UWB base station includes four antennae, obverse sides of the four antennae respectively face four azimuth directions, by which 360° may be uniformly divided, on a horizontal section. Azimuth directions faced by the first and the third antenna differ by 180°, and azimuth directions faced by the second and the fourth antenna differ by 180°. The station further includes a single-pole and a double-pole double-throw switch and a UWB module, the UWB module includes a transmitting end, a first and a second receiving end; first receiving end is respectively connected to the second and fourth antenna through single-pole double-throw switch; and transmitting end and second receiving end are respectively connected to the first and third antenna through double-pole double-throw switch. According to the invention, 360° omnidirectional positioning can be achieved, and the positioning precision is high.

Abstract: A colon polyp image processing method is provided. A value of a blood vessel color feature in an endoscopic image is classified by using an image classification model trained using a neural network algorithm to determine that the endoscopic image is a white light type picture or an endoscope narrow band imaging (NBI) type picture. A polyp in the endoscopic image is detected by using a polyp positioning model based on the determination that the endoscopic image is the white light type picture or the NBI type picture. A polyp type classification detection is performed on the detected polyp in the endoscopic image by using a polyp property identification model, and outputting an identification result.

Abstract: An antiviral nucleoside reverse transcriptase inhibitor compound as shown in formula (I), and a pharmaceutically acceptable salt, a stereoisomer, a solvate, a hydrate, a crystal form or an isotopic derivative of the compound. A preparation method therefor, a pharmaceutical composition thereof, and a use thereof in the preparation of a drug for treating and/or preventing viral infectious diseases, such as human immunodeficiency virus (HIV) and hepatitis B virus (HBV).

Abstract: A sheath, including a sheath body, a handle, and a traction wire. The traction wire includes a first traction wire. The handle includes a first guide rail member and a first slider. The first slider is connected to the first traction wire. A first groove is provided on an outer wall of the first guide rail member along an axial direction. The first groove includes a first bottom and a first side wall. The first slider slides in the first groove along the first side wall so as to drive the first traction wire to move. At least part of the outer wall of the first guide rail member is radially recessed to a central shaft of the first guide rail member to form the first groove.

Abstract: A system and a method for image-based crop identification are disclosed. The image-based crop identification system includes a database, a communication module and a model library. The database stores sample aerial data and annotated aerial data. The communication module is coupled to the database, and is configured to provide the sample aerial data to a user and receive the annotated aerial data from the user. The model library is coupled to the database, and is configured to obtain the annotated aerial data, train a crop classification model based on the annotated aerial data, and provide the trained crop classification model for subsequent crop identification. The annotated aerial data include determination of the type of the crop appearing in the sample aerial data.

Abstract: Use of a compound in preventing or treating a graft versus host disease (GVHD), especially use of the compound of formula (I) or a pharmaceutically acceptable salt thereof in preparing a drug for preventing or treating GVHD.