Abstract: Provided is an automatic calculation method for a surface defect area of a wet blue skin based on a DeeplabV3+ model, aiming at solving the problem that the automatic calculation of the surface defect area is difficult in a tannery. The method includes image data acquisition and preprocessing of a wet blue skin, training and verification of a wet blue skin surface defect segmentation model based on a DeeplabV3+ model, and automatic calculation of the surface defect area in a segmented image. The method can accurately segment common defects such as knife holes, brands and the like on the surface of a large-area wet blue skin, with a high speed of detecting a wet blue skin within 1 s.

Abstract: Methods and systems for image processing are provided. A target image may be acquired, wherein the target image may include a plurality of elements, an element of which may correspond to a pixel or a voxel. The target image may be decomposed into at least one layer, wherein the at least one layer may include a low frequency sub-image and a high frequency sub-image. The at least one layer may be transformed. The transformed layer may be reconstructed into a composite image.

Abstract: A system can obtain candidate geolocations of a mobile device participating in a communications session with a computing device over a communications network. The system can calculate a predicted reference signal received power (RSRP) for each candidate geolocation based on signal propagation characteristics, calculate a penalty for each candidate geolocation as a function of the predicted RSRP, and identify a first candidate geolocation associated with a lowest penalty. The system can generate a left arc length and a right arc length from the first candidate geolocation based on candidate geolocations corresponding with penalties greater than or equal to the lowest penalty plus a variation threshold. The system can calculate an accuracy as a function of the left arc length and the right arc length, and store, responsive to determining the accuracy exceeds a threshold, an association between the first candidate geolocation and the mobile device.

Abstract: Methods of implementing a sparse submanifold deconvolution on a graphics processing unit, the sparse submanifold deconvolution being representable as a direct convolution between an input tensor to the sparse submanifold deconvolution and each of a plurality of a sub-filters, each sub-filter of the plurality of sub-filters comprising a subset of weights of a filter of the sparse submanifold deconvolution.

Abstract: The present disclosure provides a system and method for image processing. The method may include obtaining multiple projection images of a subject acquired by an imaging device from multiple view angles; generating an initial slice image of the subject by image reconstruction based on the multiple projection images; determining, based on the multiple projection images, a target out-of-plane artifact of the initial slice image; and generating a corrected slice image by correcting the initial slice image with respect to the target out-of-plane artifact.

Abstract: A signal strength measurement system, method and apparatus are provided. The system includes a first AP and one or a plurality of second APs. Each second AP receives a scanning synchronization message indicating at least one target scanning channel. When determining that a scanning channel is an operating channel of the first AP, the first AP sends a coordinated scanning measurement request carrying an identifier of each terminal device associated with the first AP, to request each second AP to initiate a measurement request to each terminal device. When a scanning channel of any second AP is switched to the operating channel of the first AP, the any second AP sends the measurement request to each terminal device. The first AP obtains a measurement result, where the measurement result indicates a signal strength between each of at least one second AP and at least one terminal device.

Abstract: A three-dimensional unwrapping processing method for a borehole transient electromagnetic method includes: acquiring measurement information of each measuring point in a target borehole, where the measurement information includes a secondary field induced electromotive force and a roll angle; establishing, for each measuring point, an unwrapped diagram with the roll angle as a horizontal coordinate and the secondary field induced electromotive force as a longitudinal coordinate; and transforming, when an electromotive force signal in the unwrapped diagram is a negative response, the electromotive force signal into a positive response according to a transformation equation of the roll angle to acquire measurement transformation information. The processing problem of the borehole transient electromagnetic method in detecting a negative induced electromotive force response is solved, and the acquired measurement transformation information includes a negative electromotive force signal.

Abstract: The present disclosure relates to systems and methods for image splicing. The systems and methods may acquire a first image and a second image, determine a plurality of first feature points in a first region of the first image, determine a plurality of second feature points in a second region of the second image, then match the plurality of first feature points with the plurality of second feature points to generate a plurality of point pairs. Based on the plurality of point pairs, a third region on the first image and a fourth region on the second image may be determined. Finally, a third image may be generated based on the first image and the second image, wherein the third region of the first image may overlap with the fourth region of the second image in the third image.

Abstract: A battery pack installed inside a cabinet is electrically connected to an energy storage interface and a charging current converter, which is electrically connected to a charging connector. A cooling system is configured to exchange heat with the charging current converter and the charging connector. A first heat dissipation apparatus is disposed in the cooling system. A temperature adjustment system is configured to exchange heat with the battery pack, and the cooling system and the temperature adjustment system are thermally separated. A second heat dissipation apparatus is disposed in the temperature adjustment system. A controller is configured to keep the cooling system off and turn on the temperature adjustment system in a first operating mode, turn on the cooling system and the temperature adjustment system in a second operating mode, and keep the cooling system off and turn on the temperature adjustment system in a dormant mode.

Abstract: An electronic atomization device and an atomizer are provided. The atomizer includes a plurality of liquid storage cavities. A separating member is arranged between two adjacent liquid storage cavities. An atomization assembly includes an atomization base and a plurality of heating structures. The atomization base passes through the separating member and penetrates the liquid storage cavities. The heating structures are spaced apart in the atomization base and form an integrated structural member with the atomization base. Each one of the plurality of heating structures is arranged corresponding to one of the liquid storage cavities. The heating structures atomizes an atomization substrate delivered from the corresponding liquid storage cavity.

Abstract: A server system and a communication method of a server system are provided. The server system includes: at least one first processor board and a host server; the first processor board includes a first field programmable gate array chip and a first processor chip, the first field programmable gate array chip and the first processor chip being packaged and interconnected; the host server is configured to transmit host data to the first field programmable gate array chip through the switching network; and the first field programmable gate array chip is configured to process the host data, receive request data sent by the first processor chip, generate a communication protocol message according to processed host data and the request data, and transmit the communication protocol message to a target processor board through the switching network.

Abstract: A charging system for charging a power battery of a vehicle includes a battery apparatus configured to store energy and charge the power battery by releasing energy; a charging connector configured to connect to the vehicle so as to charge the power battery via the charging connector; and a thermal management system, including a first heat exchange flow path, a second heat exchange flow path, and a first switching mechanism. The first heat exchange flow path includes a first heat exchanger configured to exchange heat with the battery apparatus. The second heat exchange flow path includes a second heat exchanger configured to exchange heat with the charging connector. The second heat exchange flow path is connected to the first heat exchange flow path via the first switching mechanism.

Abstract: A control method and control apparatus for a thermal management system. The thermal management system includes a liquid coolant system and a refrigerant system, the liquid coolant system including a heat dissipation apparatus and a cold storage apparatus, where the refrigerant system is configured to cool a battery and/or the cold storage apparatus, the heat dissipation apparatus is configured to cool the battery and/or the cold storage apparatus, and the cold storage apparatus is configured to cool the battery. The method includes: obtaining first thermal management parameter information, where the first thermal management parameter information includes parameter information of the battery, and the parameter information of the battery includes temperature information of the battery and/or parameter information reflecting a heating rate of the battery; and determining a thermal management strategy of the thermal management system based on the first thermal management parameter information.

Abstract: An electric vehicle (EV) includes a battery pack, an electric motor, a drive circuit configured to drive the electric motor, a heat transfer material, arranged to transfer thermal energy from the electric motor to the battery pack, and a controller. The controller is configured to determine that the EV is connected to an external charger. In response, the controller generates the control signals comprising a waveform pattern that is free of zero volt vectors. The controller transmits the control signals to the drive circuit to drive the electric motor in accordance with the waveform pattern while the external charger charges the battery pack.

Abstract: Embodiments of the disclosure provide a live-streaming starting method, apparatus, device, storage medium, program product and program. The server receives a live-streaming starting request initiated by a terminal for streaming media; determines a starting segment according to a predetermined delay threshold, the starting segment comprising a media presentation description MPD file, an initialization segment, and a media segment corresponding to the delay threshold; and the terminal receives the starting segment sent by the server, and renders and plays a first frame of the streaming media using the starting segment. On the basis of a DASH protocol, the solution improves a live-streaming starting process, to enable a terminal to render and play a first frame only by initiating a starting request once, thereby effectively reducing a starting time and improving the user experience.