Abstract: A method includes in response to receiving an instruction for starting a panoramic mode, controlling an unmanned aerial vehicle (UAV) to hover at or near a predetermined location; while the UAV is hovering at or near the predetermined location, causing an image capturing device to capture a plurality of images by controlling a carrier that couples the image capturing device to the UAV to rotate the image capturing device about a first axis of the carrier; and stabilizing the image capturing device against motions with respect to a second axis or a third axis of the carrier while the image capturing device is rotating about the first axis of the carrier.

Abstract: Provided is a light-emitting diode and a method for preparing the same. The light-emitting diode includes an anode, a hole transport layer, a perovskite light-emitting layer, an electron transport layer and a cathode stacked in sequence, in which the perovskite light-emitting layer includes a first sublayer and a second sublayer stacked in sequence, with a material for forming the first sublayer including an inorganic perovskite material, and with a material for forming the second sublayer being an organic perovskite material.

Abstract: Disclosed in this application are a method for embedding a watermark in video data and apparatus, a method for extracting a watermark in video data and apparatus, a device, and a storage medium. The method for embedding the watermark includes: acquiring a target image frame in video data; performing time-frequency transformation on the target image frame to obtain target frequency domain data, the target frequency domain data comprising a matrix formed by frequency domain coefficients; changing the frequency domain coefficients in the target frequency domain data according to watermark data to obtain watermarked frequency domain data; performing inverse time-frequency transformation on the watermarked frequency domain data to obtain a watermarked image frame; and synthesizing watermarked video data according to the watermarked image frame.

Abstract: Provided are a networking and positioning method, system and device, and a storage medium. The method comprises: acquiring, by means of Bluetooth communication, Bluetooth broadcast positioning data broadcast by a positioning master base station in a preset positioning region, wherein a positioning beacon and the positioning master base station are each provided with a Bluetooth communication device; and networking and positioning the positioning beacon on the basis of the Bluetooth broadcast positioning data.

Abstract: Provided is a light-emitting diode and a method for preparing the same. The light-emitting diode includes an anode, a hole transport layer, a perovskite light-emitting layer, an electron transport layer and a cathode stacked in sequence, in which the perovskite light-emitting layer includes a first sublayer and a second sublayer stacked in sequence, with a material for forming the first sublayer including an inorganic perovskite material, and with a material for forming the second sublayer being an organic perovskite material.

Abstract: Provided is a light-emitting diode and a method for preparing the same. The light-emitting diode includes an anode, a hole transport layer, a perovskite light-emitting layer, an electron transport layer and a cathode stacked in sequence, in which the perovskite light-emitting layer includes a first sublayer and a second sublayer stacked in sequence, with a material for forming the first sublayer including an inorganic perovskite material, and with a material for forming the second sublayer being an organic perovskite material.

Abstract: Provided is a light-emitting diode and a method for preparing the same. The light-emitting diode includes an anode, a hole transport layer, a perovskite light-emitting layer, an electron transport layer and a cathode stacked in sequence, in which the perovskite light-emitting layer includes a first sublayer and a second sublayer stacked in sequence, with a material for forming the first sublayer including an inorganic perovskite material, and with a material for forming the second sublayer being an organic perovskite material.

Abstract: A device is configured to control display of a live broadcast of an interactive multi-user activity session in a network application. The device receives a user request for triggering an interactive live broadcast in the network application and obtains a live broadcast page for interaction in the network application from a server end. The computing device then causes display of the live broadcast page on a display located at a public broadcast location. The interaction in the network application is to be performed among users corresponding to user terminals that are located in proximity to the public broadcast location. The computing device obtains, in real time by using a persistent connection established to the server end, an update message corresponding to a dynamic change in user data in the interaction in the network application. The computing device updates display of the live broadcast page according to the update message.