Abstract: A video shooting method device and system is provided. The method includes: determining a category of an object, and determining a target lens motion mode for shooting a video of the object based on the category of the object, so as to shoot the video of the object with the target lens motion mode. This method may reduce the requirements on the user's video shooting skills and facilitate video shooting.

Abstract: An image motion compensation method includes obtaining a first initial MV and a second initial MV of a current image block. The method further includes: if at least one of reference images pointed to by the first and second initial MVs is a long-term reference image, skipping scaling of the first and second initial MVs and performing motion compensation on the current image block based on the first and second initial MVs; and/or, if both the reference images pointed to by the first and second initial MVs are short-term reference images, determining scaling factors of the first and second initial MVs, scaling the first and second initial MVs based on the scaling factors, and performing motion compensation on the current image block based on the first and second initial MVs after being scaled.

Abstract: A video image processing method includes binarizing a chrominance prediction mode of the image block of a to-be-encoded/decoded image to obtain a bit string, the bit string including two adjacent bits, the to-be-encoded/decoded image being permitted to use a CCLM and/or a regular intra-frame chrominance prediction mode, and the CCLM including a first mode, a second mode, and a third mode, and using mutually independent probability models to encode/decode a first bit and a second bit. The first bit of the adjacent bits indicates whether the CCLM is used, the second bit indicates whether to use the first mode of the CCLM when the first bit indicates to use the CCLM, the third bit indicates whether the second mode or the third mode of the CCLM is used when the second bit indicates that the first mode of the CCLM is not used.

Abstract: A method of determining a flight path for an aerial vehicle, includes controlling the aerial vehicle to fly along a first route, identifying, during the flight along the first route and with aid of one or more processors, a change in a state of signal transmission occurring at a first location, in response to identifying the change, determining, by the one or more processors, a second location different from the first location, determining a second route to the second location, and controlling, by the one or more processors, the aerial vehicle to fly to and land at the second location. The change of the state of signal transmission indicates an abnormal state in a signal transmission between the aerial vehicle and a control device.

Abstract: A spreading system for a plant protection UAV is provided, including a material inlet, a material conveying mechanism, and a material spreading mechanism. The material inlet is configured to dock with the material box. The material conveying mechanism includes a screw mechanism and a driving device connected to the screw mechanism. The material spreading mechanism is used to spread a material in the material box. The driving device may drive the screw mechanism to rotate, so as to transfer the material from the material inlet to the material spreading mechanism, thereby quantitatively feeding the material spreading mechanism and improving the spreading uniformity of the plant protection UAV. A plant protection UAV and a spreading control method are also provided.

Abstract: A scanning module may include a main body holder having an accommodation cavity; a first optical assembly within the accommodation cavity and rotatably attached to the main body holder; a first drive assembly connected to the first optical assembly and the main body holder, respectively, and being configured to drive the first optical assembly to rotate relative to the main body holder; a second optical assembly rotatably disposed at one end of the main body holder; and a second drive assembly on a side of the second optical assembly facing the main body holder and connected to the second optical assembly and the main body holder, respectively, and configured to drive the second optical assembly to rotate relative to the main body holder.

Abstract: A method includes: determining a target object in a photographed image to track the target object; determining, based on shooting information of a photographing device carried by a movable object, a location of the target object to continuously record the location of the target object; and in response to a disappearance of the target object in the photographed image, controlling, according to the recorded location of the target object prior to the disappearance of the target object, an attitude of the photographing device such that the photographing device continues to photograph in a direction from the photographing device to the location of the target object.

Abstract: The present disclosure provides a laser diode package module. The laser diode package module includes a substrate including a first surface; a cover disposed on the first surface of the substrate; an accommodation space formed between the substrate and the cover; a laser diode die disposed in the accommodation space; and a reflective surface disposed in the accommodation space for outputting light of the laser diode die reflected by the reflective surface and transmitted through a light-transmitting area. The light-transmitting area is at least partially disposed on a surface of the cover opposite the substrate.

Abstract: A gimbal includes an axis structure including a rotating member, a bearing member rotatably connected to the rotating member, and a locking structure. The rotating member includes a rotor of a motor or a member fixedly connected to a rotor. The bearing member includes a stator of the motor or a member fixedly connected to a stator. The locking structure includes a positioning snap member movably provided on one of the rotating member and the bearing member and configured to engage with another one of the rotating member and the bearing member. The axis structure is a yaw-axis structure, a roll-axis structure or a pitch-axis structure. The motor is configured to control a movement about a pitch axis, a movement about a yaw axis, or a movement about a roll axis. A rotational position of the rotating member relative to the bearing member is locked by the locking structure when the rotating member rotates to a preset position.

Abstract: A spray operation method includes obtaining two-dimensional position information of a target area and a three-dimensional model of the target area, and obtaining an operation route according to the two-dimensional position information and the three-dimensional model, where the operation route includes a plurality of waypoints, and at least one of the waypoints is associated with altitude information.

Abstract: An electric unmanned aerial vehicle includes a position sensor configured to obtain first coordinate information of a present position of the electric unmanned aerial vehicle in real-time, a memory configured to store second coordinate information of a preset position of the electric unmanned aerial vehicle, and a controller in communication with the position sensor and the memory. The controller is configured to calculate, based on the first coordinate information and the second coordinate information, safety electricity amount information of the electric unmanned aerial vehicle; select, based on the safety electricity amount information and a present remaining electricity amount of the electric unmanned aerial vehicle, a safety protection command from a plurality of safety protection commands; and control the electric unmanned aerial vehicle to perform the selected safety protection command.

Abstract: A UAV control method and device, a remote controller and a storage medium are provided. The method includes: obtaining UAV control mode switching request information to request to switch from a first control mode to a second control mode; in response to the switching request information, detecting whether the position of an accelerator control member in its operating range is within a region of hovering range. In the second control mode, when the accelerator control member is within the region of hovering range, the UAV maintains a hovering state in a vertical direction; if it is detected that the accelerator control member is located in the region of hovering range, the control mode of the UAV is switched from the first control mode to the second control mode, otherwise, refuse to switch the control mode of the UAV from the first control mode to the second control mode.

Abstract: An operating method of an aerial vehicle may comprise obtaining target parameters, the target parameters being acquired by an on-board sensor of the aerial vehicle during movement of the aerial vehicle, the target parameters comprising a distance between the aerial vehicle and a target object and an extension direction of the target object; determining a flight path of the aerial vehicle based on the target parameters; and controlling the aerial vehicle to perform an operation based on the flight path of the aerial vehicle.

Abstract: A device includes a transceiver, a receiver, and a processor. The transceiver is configured to receive feedback data from an unmanned aerial vehicle (UAV) and transmit control data to the UAV via a first communication link. The receiver is configured to receive the control data from a controlling terminal via a second communication link. The second communication link does not interfere with the first communication link. The processor is configured to determine whether the feedback data and the control data are being simultaneously transmitted via the first communication link.

Abstract: A method for automatically powering off an aerial vehicle includes determining an operating state of the aerial vehicle, and in response to a determination result that the operating state of the aerial vehicle is a landed state, triggering to shut down a propulsion output of the aerial vehicle such that the aerial vehicle completes automatic power off after landing, including, in response to the determination result that the operating state of the aerial vehicle is the landed state, determining whether the propulsion output of the aerial vehicle is currently enabled and determining whether an automatic take-off operation indicated by an automatic take-off instruction is currently being performed, and, in response to the propulsion output being currently enabled and the automatic take-off operation not currently being performed, triggering to shut down the propulsion output of the aerial vehicle.

Abstract: A method for controlling a landing gear of an unmanned aerial vehicle (UAV) includes detecting whether a relative-to-ground height of the UAV is greater than a height threshold, where the relative-to-ground height is a vertical height of the UAV with respect to an object; and in response to the relative-to-ground height being not greater than the height threshold and the UAV having not lowered the landing gear, adjusting the relative-to-ground height to the height threshold or above, and lowering the landing gear.

Abstract: An inertial measurement unit (IMU) device includes a circuit board assembly including a rigid circuit board and a flexible circuit board, an IMU sensor disposed on the rigid circuit board, and a heat preservation system. The IMU sensor is electrically connected to an external element through the flexible circuit board to transmit at least one of a signal or power between the IMU sensor and the external element. The heat preservation system includes a heat source, a heat preservation body with a receiving space to accommodate the IMU sensor, and a heat conductive member configured to transfer heat from the heat source to the IMU sensor to maintain the IMU sensor at a preset temperature. The heat conductive member includes an electrically insulating and thermally conductive silicone.

Abstract: A heat dissipation structure includes a housing configured to accommodate a heating element of an unmanned aerial vehicle (UAV). The housing includes a first air vent and a second air vent. The first air vent is configured to guide an airflow into the housing. The airflow includes a propeller-generated airflow generated by a propeller of the UAV during rotation. A side projection of the first air vent on a side of the housing at least partially overlaps a side projection of the propeller on the side of the housing. The second air vent is configured to guide the airflow out of the housing.

Abstract: A method includes generating one or more calibration instructions for calibrating one or more sensors coupled to a movable object and providing at least some of the one or more calibration instructions to a user interface. The at least some of the one or more calibration instructions includes human-readable user instructions for moving the movable object along a predetermined pattern. The method further includes calibrating one or more sensor parameters for the one or more sensors based at least in part on sensor data collected while the movable object moves along the predetermined pattern.

Abstract: A flight control method, a video editing method, a device, a movable platform and a storage medium are provided. The method includes: obtaining a target flight trajectory of the movable platform, the target flight trajectory including a plurality of sub-trajectories, the plurality of sub-trajectories including an encircling sub-trajectory, a receding sub-trajectory, and/or an approaching sub-trajectory. The movable platform is controlled to fly according to the target flight trajectory, and a photographing on the movable platform is used to shoot a target photographing object. Thus, multiple videos corresponding to the plurality of sub-trajectories may be acquired within a single flight process.