Abstract: Small bearings for multi-element optical scanning devices and associated systems and methods include an exemplary LiDAR system. The LiDAR system includes a laser transceiver having a laser emitter and a laser receiver, the laser emitter being positioned to emit laser light along an optical path; a collimating element and at least one optical element positioned along the optical path, the at least one optical element having an opening therethrough; a shaft extending into the opening; and a bearing positioned to rotatably support the at least one optical element relative to the shaft.

Abstract: A real-time display method, device, system, and storage medium for a three-dimensional point cloud can include: displaying a flight route corresponding to a target shooting area of an unmanned aerial vehicle; acquiring a current position of the unmanned aerial vehicle and an image captured by an image capturing device of the unmanned aerial vehicle; based upon the image, determining a three-dimensional point cloud corresponding to at least a portion of the target shooting area; and displaying synchronously the current position of the unmanned aerial vehicle and the three-dimensional point cloud while the unmanned aerial vehicle moves according to the flight route, where a display icon corresponding to the current position is located on the flight route.

Abstract: A lens limiting assembly includes a lens assembly ring and a locking ring arranged outside the lens assembly ring. The lens assembly ring includes an accommodating groove. The locking ring includes a body and a hook protruding inwardly from the body and accommodated in the accommodating groove.

Abstract: A method for generating sound with a motor, including: generating a motor-driving signal having an audio signal component; applying the motor-driving signal to the motor, wherein the motor-driving signal drives the motor to generate a sound corresponding to the audio signal component; applying a bandpass filter to the motor-driving signal to generate a filtered motor-driving signal; and applying the filtered motor-driving signal to a speaker to present audio content consistent with the sound generated by the motor.

Abstract: A method for detecting a displacement of a mobile platform includes acquiring a first frame and a second frame using an imaging device coupled to the mobile platform, obtaining an angle of the imaging device relative to a reference level while acquiring the first frame, and determining the displacement of the mobile platform based at least on the first frame, the second frame, and the angle of the imaging device relative to the reference level.

Abstract: A video processing method includes determining a reference image before a current frame in time sequence as a long-term reference image according to an identifier, determining a motion vector candidate list of a current coding unit, and obtaining first and second initial motion vectors of the current coding unit from the motion vector candidate list. The first and second initial motion vectors point to first and second reference images, respectively, that are forward and backward frames of the current frame, respectively. The method further includes performing or not performing a target operation according to whether the first and second reference images are short-term or long-term reference images.

Abstract: A control method for a non-orthogonal gimbal includes obtaining an actual attitude of the gimbal, determining a target attitude of the gimbal according to the actual attitude of the gimbal and an angle between a first rotation axis of a first drive motor and a second rotation axis of a second drive motor, determining an attitude error according to the actual attitude and the target attitude, and controlling one or more of a plurality of drive motors according to the attitude error to cause the gimbal to approach the target attitude. The gimbal includes the plurality of drive motors including the first drive motor, the second drive motor, and the third drive motor. The gimbal further includes a base, a first axis arm, a second axis arm, and a third axis arm.

Abstract: An unmanned aerial vehicle (UAV) includes a housing forming a central body of the UAV and including an internal compartment, one or more electrical components disposed within the internal compartment and configured to affect operation of the UAV, and an inertial measurement unit (IMU) disposed in an external compartment external to the central body. The IMU is isolated from the internal compartment such that a barometric pressure in the external compartment is independent of a barometric pressure in the internal compartment.

Abstract: A follow-focus wheel assembly includes a supporting member, a follow-focus plate, and a follow-focus wheel. The supporting member includes a supporting seat and a mounting seat formed by extending outward from the supporting seat; the follow-focus plate and the follow-focus wheel are located on two sides of the mounting seat respectively, and the follow-focus wheel passes through a through hole on the mounting seat and then connects to the follow-focus plate in a rotatable manner. The supporting member is used for connecting an external structure, and the follow-focus wheel assembly is mounted in the external structure via the supporting member, where the follow-focus wheel partially extends out of the external structure when the supporting member is connected to the external structure. The follow-focus wheel assembly has a simple and compact structure, and can be miniaturized. It meets the requirement of performing a focusing operation with a single hand.

Abstract: A gimbal control method, a gimbal, and a computer-readable storage medium are provided. The method includes: determining a target motor to be rotated and a target joint angle; generating a corresponding rotation control instruction based on a deviation between a current joint angle of the target motor and the target joint angle; and controlling the target motor to rotate based on the rotation control instruction. This disclosure improves convenience of switching between a horizontal shooting mode and a vertical shooting mode.

Abstract: A gimbal control method, a gimbal and a computer-readable storage medium including the gimbal control method are provided. The gimbal control method may include determining a target attitude angle of a gimbal, determining an attitude deviation value of the gimbal based on the target attitude angle and a current attitude angle of a clamping portion of the gimbal, generating a corresponding centering control instruction based upon the attitude deviation value, and executing the centering control instruction to control the gimbal to return to a center position.

Abstract: A device includes a memory storing a computer program and a processor configured to read the computer program to obtain a content including information acquired in a time sequence, extract characteristics at a plurality of time points from the information, determine a color or a brightness at each of the time points based on the characteristic at the time point, and generate drag bar images each corresponding to one of the time points and including a pixel having the color or the brightness at the one of the time points.

Abstract: An avionics system for an unmanned aerial vehicle (UAV) includes a housing having a mounting hole, a flight control circuit board arranged inside the housing, a wireless communication circuit board integrated with the flight control circuit board on a printed circuit board (PCB), a positioning circuit arranged inside the housing and above or below the PCB, and a connection wire passing through the mounting hole and connecting the flight control circuit board with an electronic governor of the UAV arranged outside the housing.

Abstract: An unmanned aerial vehicle (UAV) includes a vehicle body and a multi-ocular imaging assembly. The multi-ocular imaging assembly includes at least two imaging devices disposed in and fixed to the vehicle body.

Abstract: Embodiments of the present disclosure provides a gimbal. The gimbal includes a pitch motor, a coaxial cable, and a first support arm arranged opposite a second support arm. The pitch motor is disposed at a front end of the first support arm, a motor shaft of the pitch motor extending in a direction of the second support arm for connecting with one end of an imaging device; a limiting shaft is disposed at a front end of the second support arm, the limiting shaft extending in a direction of the first arm for connecting with another end of the imaging device; a first wiring space is formed in the limiting shaft and a second wiring space is formed in the second support arm, a first end of the coaxial cable sequentially passing through the second wiring space and the first wiring space for electrically connecting with the imaging device.

Abstract: A multi-rotor unmanned aerial vehicle (UAV) includes a central body, a plurality of branch members connected to the central body, each branch member configured to support a corresponding actuator assembly, a communication module disposed within the central body and configured to establish a communication channel between the UAV and a remote device, and an indicator light disposed on one of the plurality of branch members. The indicator light is configured to indicate whether the communication channel is established.

Abstract: A spray-head assembly includes a pipe structure and a valve-spool. The pipe structure includes a liquid inlet, a flow pathway, and a valve-port. The flow pathway includes an air-flow pathway arranged obliquely with respect to a central axis of the liquid inlet. A bottom end of the air-flow pathway communicates with the liquid inlet. The valve-port is arranged at a top end of the air-flow pathway. The valve-spool is arranged in the flow pathway and configured to control opening and closing of the valve-port.

Abstract: A method of controlling a movable object to track a target includes determining a difference between a desired height and a measured height of the movable object, determining a reference speed of the movable object or the target, and adjusting the movable object based on the reference speed and the difference between the desired height and the measured height.

Abstract: A video processing method includes performing or skipping following processing based on whether a size of a coding unit is not smaller or is smaller than 8×8. The processing includes dividing the coding unit into sub-blocks each having a fixed size of 8×8, scanning a left neighboring block and determining a reference motion vector of the coding unit, determining a related reference block of a sub-block in the co-located reference image according to the reference motion vector, determining a scaling factor of a motion vector of the related reference block, scaling the motion vector of the related reference block using the scaling factor, determining motion information of the sub-block according to the scaled motion vector, and performing prediction for the coding unit according to the motion information.

Abstract: A motion sensor module and a movable platform are provided. The motion sensor module may include: a motion sensor; a bearing frame for bearing the motion sensor; a mounting frame for connecting an external mechanism; and a plurality of dampers distributed around the bearing frame. The mounting frame and the bearing frame may be arranged opposite to each other at a distance interval. One end of each damper may be connected to the mounting frame, and the other end of each damper may be connected to the bearing frame. The axial stiffness of each damper may be greater than the radial stiffness thereof, and the axial direction of damper may extend obliquely outwards from the mounting frame.