Abstract: This application provides techniques of generating interactive videos. The techniques comprise obtaining an original video, creating an interactive track for the original video to obtain an initial video, and adding an interactive component to the interactive track; and generating an interactive video by rendering at least one interactive video frame and other video frames of the initial video based on the interactive component. In this way, an interactive video with an interactive capability can be generated without additionally adding a data channel to implement an interaction function, thereby reducing processing load of a terminal and reducing resource consumption of the terminal.

Abstract: Provided are an endoscopic imaging system and its light source. The light source includes a laser light source, a visible light source and a light combiner; the laser light source outputs laser lights of at least two different wavelengths, where the laser lights of different wavelengths excites different fluorescent dyes; the visible light source outputs a visible light; the light combiner combines the laser light(s) and the visible light to form and output a combined beam to an endoscope. The laser light source is a single light-emitting device including a single substrate and at least two laser chips arranged on said substrate; the at least two laser chips emit laser lights of different wavelengths. This light source is capable of exciting different fluorescent dyes in a time-division manner or a simultaneous manner, thus making a layout of the endoscopic imaging system simple and highly reliable, by using the light source.

Abstract: This disclosure provides techniques of implementing online somatosensory dance competitions. The techniques comprise assigning a room to one or more players in response to receiving one or more requests of starting a game, wherein all players in a same room share a same dance video; outputting a plurality of standard movement images corresponding to the same dance video in a chronological order, wherein the plurality of standard movement images each indicate position coordinates of different skeleton nodes at a corresponding moment; receiving dance movement signals associated with each of the one or more players, and determining scores for each player based on a similarity between the dance movement signals and standard movement parameters, wherein the standard movement parameters correspond to the standard movement images; and collecting and outputting statistics on an overall score and ranking of each of the one or more players.

Abstract: This disclosure provides techniques of extracting movements from a dance video. The techniques comprise receiving a dance video that includes one or more dancers and that is uploaded by a user, and obtaining a video frame in the dance video; recognizing, based on a skeleton node recognition algorithm, skeleton node images from the video frames corresponding to a target dancer, where the target dancer is selected from the one or more dancers; performing cluster analysis on the skeleton node images recognized from the dance video and corresponding to each target dancer to obtain a plurality of cluster sets; determining a cluster center in each of the plurality of cluster sets as a key skeleton node image; and sequentially outputting the key skeleton node images to obtain a standard movement sequence corresponding to each target dancer in the dance video.

Abstract: A high-frequency circuit includes: a first ground layer having an electric conductor formed therein; a second ground layer having an electric conductor formed therein; and a conductive pattern layer having a first conductive pattern formed thereon. The first ground layer, the second ground layer, and the conductive pattern layer are laminated one on another. The conductive pattern layer includes a first area in which a distance to the electric conductor formed in the second ground layer is longer than a distance to the electric conductor formed in the first ground layer, in a lamination direction in which the first ground layer, the second ground layer, and the conductive pattern layer are laminated. At least a part of the first conductive pattern is disposed in the first area.

Abstract: This application provides a bullet-screen comment display method, where the bullet-screen comment display method includes: determining bullet-screen comment area basic information corresponding to a target bullet-screen comment from a target picture; identifying an invalid pixel set of the target picture; determining a bullet-screen comment filling area corresponding to the target bullet-screen comment based on the bullet-screen comment area basic information and the invalid pixel set; and filling the bullet-screen comment filling area with the target bullet-screen comment.

Abstract: A method for preparing the ferrous sulfide-containing passivator includes: dissolving a sulfide in an alkaline solution to form a mixed solution with a pH of 12-13; adding sodium silicate to the mixed solution and stirring for 0.5-1 hour at 20-40° C.; adding an aqueous solution of ferrous salt to the mixed solution containing sodium silicate, and allowing to react at 40-60° C. for 2-3 hours; where, with decrease of the pH of the mixed solution, sodium silicate is converted into silica nanoparticles, and the ferrous salt reacts with the sulfide to form ferrous sulfide; and further adding an aqueous solution of an organic modifier, and allowing to react at 40-60° C. for 1-2 hours to form a passivator slurry including surface-modified ferrous sulfide doped with silicon dioxide; filtering the passivator slurry to form a passivator.

Abstract: The present disclosure describes techniques of presenting audio/video (AV) files. The disclosed techniques include displaying a first interface, wherein the first interface comprises a list of a plurality of AV files and an editing area; generating a plot graph based at least in part on an input by a first user via the first interface, wherein the plot graph has a directed structure, and the at least one first type of AV file and the at least one second type of AV file are associated with different nodes of the plot graph; playing a first type of AV file; detecting that a preset instruction is received in response to determining that a playing progress of the first type of AV file reaches a first predetermined position; and playing another first type of AV file or a second type of AV file based on the preset instruction.

Abstract: An onboard transmission system includes: a roof-side communication unit configured to receive RF (Radio Frequency) signals from a plurality of wireless machines respectively corresponding to a plurality of different frequency bands, and transmit a digital signal that is based on the received RF signals, to one transmission path, and a vehicle interior-side communication unit configured to process the digital signal received from the transmission path, in accordance with the respective frequency bands.

Abstract: This application provides techniques of generating interactive videos. The techniques comprise obtaining an original video, creating an interactive track for the original video to obtain an initial video, and adding an interactive component to the interactive track; and generating an interactive video by rendering at least one interactive video frame and other video frames of the initial video based on the interactive component. In this way, an interactive video with an interactive capability can be generated without additionally adding a data channel to implement an interaction function, thereby reducing processing load of a terminal and reducing resource consumption of the terminal.

Abstract: An onboard transmission system includes: a vehicle interior-side communication unit configured to generate a digital signal that includes a plurality of pieces of data respectively corresponding to a plurality of different frequency bands, and transmit the generated digital signal to one transmission path, and a roof-side communication unit configured to distribute the digital signal received from the transmission path or a signal that is based on the digital signal received from the transmission path, into signals for a plurality of wireless machines respectively corresponding to the plurality of frequency bands.

Abstract: This application provides a bullet-screen comment display method, where the bullet-screen comment display method includes: determining bullet-screen comment area basic information corresponding to a target bullet-screen comment from a target picture; identifying an invalid pixel set of the target picture; determining a bullet-screen comment filling area corresponding to the target bullet-screen comment based on the bullet-screen comment area basic information and the invalid pixel set; and filling the bullet-screen comment filling area with the target bullet-screen comment.

Abstract: Techniques for displaying comments relative to a video frame are described herein. The disclosed techniques include receiving a frame of a video; receiving bullet screen data comprising a plurality of comments associated with the frame; receiving a mask frame data segment corresponding to the frame; determining a mask area based on the mask frame data segment, wherein the mask area corresponds to a main area of the frame; and displaying the plurality of comments relative to the frame in areas other than the mask area.

Abstract: The present application discloses a graphics processing method applicable to a player, including: performing data interaction between a graphics engine and the player to obtain playback data; and executing, by the graphics engine, a graphics processing operation on a next frame of the player based on the playback data and a preset logic. In the present application, a communication mechanism is set between the engine scene layer of the graphics engine and the player, such that the engine scene layer and the player interact with each other in terms of playback data of a video being played, so that the engine scene layer can efficiently obtain the playback data for graphics processing operations, which is applicable to a video playing service and ensures a video rendering effect.

Abstract: The present application provides techniques for processing bullet screens. The techniques comprises determining a target bullet screen based at least in part on a number of likes received by each bullet screen associated with a target multimedia resource; obtaining attribute information of the target bullet screen comprising a resource time point indicating a time point of displaying the target bullet screen in the target multimedia resource; determining a target time point in the target multimedia resource from which the target multimedia resource starts to play based at least in part on the resource time point; generating prompt information based on the target bullet screen, the attribute information of the target bullet screen, attribute information of the target multimedia resource, and the target time point; and sending the prompt information to a target client computing device.

Abstract: Techniques for controlling vibrations of a computing device is provided in the present disclosure. The techniques comprise obtaining a target audio file of a multimedia file; dividing the target audio file into a plurality of audio segments; determining a target audio segment among the plurality of audio segments based on detecting at least one feature associated with each of the plurality of audio segments; determining a target time period in a total time period of playing the multimedia file, the target time period corresponding to a playback of the target audio segment in the multimedia file; monitoring a current time point of playing the multimedia file; and controlling a vibration element in the computing device to perform a vibration operation when the current time point of playing the multimedia file is within the target time period.

Abstract: This disclosure provides techniques of implementing online somatosensory dance competitions. The techniques comprise assigning a room to one or more players in response to receiving one or more requests of starting a game sent by the one or more players, wherein all players in a same room share a same dance video; outputting a plurality of standard movement images corresponding to the same dance video in a chronological order, wherein the plurality of standard movement images each indicate position coordinates of different skeleton nodes at a corresponding moment; receiving dance movement signals associated with each of the one or more players, and determining scores for each player based on a similarity between the dance movement signals and standard movement parameters, wherein the standard movement parameters correspond to the standard movement images; and collecting and outputting statistics on an overall score and ranking of each of the one or more players.

Abstract: This disclosure provides techniques of extracting movements from a dance video. The techniques comprise receiving a dance video that includes one or more dancers and that is uploaded by a user, and obtaining a video frame in the dance video; recognizing, based on a skeleton node recognition algorithm, skeleton node images from the video frames corresponding to a target dancer, where the target dancer is selected from the one or more dancers; performing cluster analysis on the skeleton node images recognized from the dance video and corresponding to each target dancer to obtain a plurality of cluster sets; determining a cluster center in each of the plurality of cluster sets as a key skeleton node image; and sequentially outputting the key skeleton node images to obtain a standard movement sequence corresponding to each target dancer in the dance video.

Abstract: A high-frequency circuit includes: a first ground layer having an electric conductor formed therein; a second ground layer having an electric conductor formed therein; and a conductive pattern layer having a first conductive pattern formed thereon. The first ground layer, the second ground layer, and the conductive pattern layer are laminated one on another. The conductive pattern layer includes a first area in which a distance to the electric conductor formed in the second ground layer is longer than a distance to the electric conductor formed in the first ground layer, in a lamination direction in which the first ground layer, the second ground layer, and the conductive pattern layer are laminated. At least a part of the first conductive pattern is disposed in the first area.

Abstract: A method for preparing the ferrous sulfide-containing passivator includes: dissolving a sulfide in an alkaline solution to form a mixed solution with a pH of 12-13; adding sodium silicate to the mixed solution and stirring for 0.5-1 hour at 20-40° C.; adding an aqueous solution of ferrous salt to the mixed solution containing sodium silicate, and allowing to react at 40-60° C. for 2-3 hours; where, with decrease of the pH of the mixed solution, sodium silicate is converted into silica nanoparticles, and the ferrous salt reacts with the sulfide to form ferrous sulfide; and further adding an aqueous solution of an organic modifier, and allowing to react at 40-60° C. for 1-2 hours to form a passivator slurry including surface-modified ferrous sulfide doped with silicon dioxide; filtering the passivator slurry to form a passivator.