Abstract: The present disclosure provides a method for complex target retrieval from mass videos based on human-machine collaboration. At present, an intelligent system based on machine vision is weak in generalization ability. When an environment changes or a target is shielded or camouflaged, target retrieval from mass videos requires lots of manpower, which is time-consuming and labor-consuming. In the present disclosure, prescreening is performed in a video library using a retrieval model according to a coarse-grained feature of a target, and a candidate target set obtained by screening is made into a brain-eye synergistic rapid serial visual presentation (RSVP) paradigm for presentation for a user. After the user determines the target, a specific feature thereof is input to the retrieval model to realize rapid location and tracking of the target in mass videos.

Abstract: Embodiments of the disclosure disclose a method, apparatus, device and storage medium for video processing. The method includes: acquiring an original image and an original audio; performing target object segmentation on the original image to obtain a target object image and a background image; performing accent recognition on the original audio to obtain an accented audio; adjusting a size of the target object image according to different adjustment proportions to obtain a plurality of adjusted target object images; fusing the plurality of adjusted target object images respectively with the background image to obtain a plurality of target images; and performing audio and video encoding on the plurality of target images and the accented audio to obtain a target video.

Abstract: A fluid transfer pump comprises: a housing, a pump unit, an electric motor assembly, a power supply mounting base, and a speed change mechanism, wherein the pump unit comprises an impeller; the electric motor assembly is used to drive the impeller to rotate around an axis of the impeller; the power supply mounting base is used to receive a power supply for supplying electricity to the pump unit; and the speed change mechanism is arranged between the pump unit and the electric motor assembly. The power supply mounting base is arranged in a power supply compartment; and the pump unit, the speed change mechanism, the electric motor assembly, and the power supply compartment are successively arrayed in an extension direction of the axis of the impeller.

Abstract: Temporary access to a digital whiteboard is enabled for conference participants during a conference (e.g., a video conference). Based on a request to share a digital whiteboard with conference participants during a conference, ones of the conference participants to which to grant temporary access permissions for the digital whiteboard are determined. The temporary access permissions are granted to enable the ones of the conference participants to access the digital whiteboard during the conference. Based on an event occurrence, which may, for example, correspond to a termination of the conference or a disconnection of an owner of the digital whiteboard from the conference, the temporary access permissions are revoked to restrict further access to the digital whiteboard by the ones of the conference participants.

Abstract: The present disclosure provides a crystal bar slicer, a crystal bar slicing system and a loading method thereof. The crystal bar slicer includes a frame body, a cutting shaft and a holding mechanism. The frame body is provided with a slicing chamber and a feeding channel. The slicing chamber is in front of the feeding channel. A sidewall of the slicing chamber is provided with a feeding port, and a rear end of the feeding channel is in communication with outside of the frame body. A front end of the feeding channel is in communication with the slicing chamber via the feeding port. The cutting shaft is disposed in the slicing chamber, and the holding mechanism is configured to drive the crystal holder to move relative to the cutting shaft. The crystal bar slicing system includes the crystal bar slicer, a mechanical hand and a stockpiling region. The loading method includes loading a material with the mechanical hand.

Abstract: Whiteboard roles controlling levels of access to functionality of a digital whiteboard shared to a video conference for participants of the video conference are inherited based on conference roles of those participants within the video conference. Based on a request to share a digital whiteboard to a video conference, a whiteboard role is determined for each participant of the video conference based on a conference role of the participant within the video conference. For each participant during the video conference, access to functionality of the digital whiteboard corresponding to the whiteboard role determined for the participant is enabled, in which different functionality of the digital whiteboard is enabled for different whiteboard roles.

Abstract: A magnetic resonance imaging system and method, and a computer-readable storage medium are provided. The magnetic resonance imaging method includes: acquiring a plurality of k-space data sets by using a plurality of imaging sequences, each imaging sequence comprising a pre-phase-dispersion gradient pulse and a plurality of phase encoding gradients applied after the pre-phase-dispersion gradient pulse, wherein the pre-phase-dispersion gradient pulses of the plurality of imaging sequences have a standard area difference therebetween when ordered according to area values; respectively reconstructing magnetic resonance images from the respective k-space data sets; and averaging amplitudes of the magnetic resonance images to generate a magnetic resonance image of an average amplitude.

Abstract: A control method and device for an unmanned aerial vehicle, and a non-transitory computer readable storage medium are provided. The control method may include: acquiring shooting control information, the shooting control information including a height of a shooting target object, a mission height, and an overlapping ratio; determining the target flight route and a shooting interval based upon the shooting control information; and controlling an unmanned aerial vehicle to fly according to the target flight route and to photograph the shooting target object according to the shooting interval by using a photographing device during the flight. The mission height may be a distance between a plane where a target flight route is located and a plane where the shooting target object is located, and a starting plane for computing the overlapping ratio may be the plane where the shooting target is located.

Abstract: A method for generating a special effect for social networking interaction in a virtual environment of a game is performed by an electronic device. The method includes: displaying an object presentation interface of a target battle of the game when loading a virtual scene corresponding to the target battle, the object presentation interface being used for displaying a plurality of virtual objects participating in the target battle; receiving a special effect generating instruction for a first virtual object of the plurality of virtual objects, the special effect generating instruction being used for instructing to generate a special effect based on the first virtual object, and the first virtual object corresponding to a user of the electronic device triggering the special effect; and generating the special effect identifying the first virtual object in the object presentation interface.

Abstract: Provided is an indoor test device for simulating a vibration pile sinking process and testing a bearing capacity thereof and a test method thereof. The indoor test device comprises a container, a soil located in the container, a vibration penetration system and a balanced vibration damping system, the vibration penetration system is vertically arranged above the soil in the container, and the balanced vibration damping system is located right above the vibration penetration system and coaxially arranged with the vibration penetration system. The indoor test device and the test method apply to researching on the vibration pile sinking process and testing the bearing capacity thereof in different types of soil, and adapts to different frequencies and different exciting forces.

Abstract: The present disclosure provides a display device, a wearable display device, and method for determining gaze positions, and relates to the field of virtual reality technologies. Because the display device has a high efficiency in processing an electric signal transmitted by each of photoelectric sensor assemblies is high, the display device is capable of quickly determining a gaze position of eyes of a user on a display panel based on the electric signal transmitted by each of the photoelectric sensor assemblies. In this way, the efficiency of displaying images by the display panel is further improved, and thus a higher refresh rate of the display panel is achieved.

Abstract: A photoelectric detection circuit, a method of controlling the photoelectric detection circuit and a pixel unit are provided. The photoelectric detection circuit includes: a detection sub-circuit configured to generate a current flowing between a bias voltage signal terminal and a input node in response to an optical signal; a storage sub-circuit connected between the bias voltage signal terminal and the input node, and configured to store energy based on the current generated by the detection sub-circuit; an integrator sub-circuit having a first input terminal, a second input terminal and an output terminal, and configured to integrate a signal of the first input terminal based on a potential of the second input terminal to generate an integrated signal and output the integrated signal at the output terminal; and a control sub-circuit connected to a control signal terminal, the input node and the first input terminal of the integrator sub-circuit.

Abstract: A display panel is provided, including: a base substrate; a pixel circuit on the base substrate, the pixel circuit includes a transistor including an active layer, a gate electrode, a first electrode and a second electrode; and a fingerprint recognition circuit including a photosensitive circuit, a storage circuit and an output circuit, the storage circuit includes a first capacitor including a first capacitance electrode and a second capacitance electrode; the first capacitance electrode is arranged in the same layer as at least one of the gate electrode, the active layer, the first capacitor or the second electrode, and/or, the second capacitance electrode is arranged in the same layer as at least one of the gate electrode, the active layer, the first electrode or the second electrode; the first capacitance electrode is located in a layer different from a layer where the second capacitance electrode is located.

Abstract: A fluid transfer pump comprises: a housing, a pump unit, an electric motor assembly, a power supply mounting base, and a speed change mechanism, wherein the pump unit comprises an impeller; the electric motor assembly is used to drive the impeller to rotate around an axis of the impeller; the power supply mounting base is used to receive a power supply for supplying electricity to the pump unit; and the speed change mechanism is arranged between the pump unit and the electric motor assembly. The power supply mounting base is arranged in a power supply compartment; and the pump unit, the speed change mechanism, the electric motor assembly, and the power supply compartment are successively arrayed in an extension direction of the axis of the impeller.

Abstract: The present disclosure relates to a method for controlling a movable platform. The method may include obtaining a target object selection operation input by a user on an interaction interface, the interaction interface displaying a three-dimensional model of an operation area, the target object selection operation configured to determine a position of a target object in the operation area; determining a target orientation of the movable platform when the target object is operated based on an orientation of the three-dimensional model displayed on the interaction interface when the target object selection operation is obtained; and determining a target position of the movable platform when the movable platform performs operation on the target object based on the position of the target object, the target orientation, and an operation distance of the movable platform.

Abstract: The present disclosure provides a highly-reliable insulating ultra-small electromagnetic relay, comprising a coil portion and static spring portions. The coil portion comprises a bobbin; the bobbin comprises two flanges that are located at the two end portions of the bobbin; each static spring portion comprises a static spring provided at at least one end of the bobbin; the static spring comprises a contact portion comprising a static contact; the contact portion of the static spring is provided at the position close to the flange of the bobbin; and in each flange of the bobbin, a first retaining wall and a second retaining wall used for together limiting the position of the contact portion of the static spring in two horizontal directions are respectively and upwardly arranged in a protruding mode.