18results about How to "Smooth playback" patented technology

The invention relates to the technical field of image processing, and discloses an image processing method of an LED dome screen display screen, comprising the following steps: S1, according to the size of the LED dome screen display screen and the size of a source image supported by a playing system, generating a virtual target image having the same shape as a dome screen, the size of the virtual target image being proportional to the actual size of the dome screen; s2, performing plane cutting on the virtual target image according to each row of pixel points forming the LED dome screen display screen to form corresponding hemispherical arcs; and S3, unfolding the generated hemispheroid arc and projecting the hemispheroid arc into a two-dimensional projection plane. Through accurate image mapping and deformation processing, the visual effect of a source image presented on an LED dome screen is the same as that of the source image presented on a flat panel display screen, an adaptive mapping algorithm is used, the deformation degree of the image can be dynamically adjusted according to image features, it is ensured that each frame of image can keep high-quality display at different visual angles, and the image quality is improved. And the viewing experience of the user is greatly enhanced.

The invention discloses a free viewpoint video playing method and device, a storage medium and electronic equipment, and relates to the technical field of video playing. The method comprises the following steps: positioning a sight area of a user by adopting an eyeball tracking method based on a preset window size to obtain an effective window position; performing calculation processing based on the effective window position and a preset rotation angle value to obtain each neighborhood window position; performing image processing on a pre-acquired full-view video image based on the effective window position and each neighborhood window position to obtain a first view video image corresponding to the effective window position and a second view video image corresponding to each neighborhood window position; and in response to a window position switching operation of the user, switching the currently played first view angle video image into the second view angle video image of the target neighborhood view angle selected by the user. According to the method provided by the invention, the switching delay can be reduced, so that the free viewpoint video playing effect is smoother.

The application relates to the technical field of graphic display, and discloses an animation display method, related devices and a storage medium, wherein the animation display method comprises the following steps: S1, in an animation display scene, for a transparent superposition region containing a highlight background in a picture, determining a luminance change range and establishing a corresponding relationship between luminance and transparency, forming a unified display reference basis; S2, according to the display reference basis, performing step-by-step linearization processing on foreground color, background color and transparency, limiting the numerical range of color and transparency, and preventing abnormal deviation of transparency in the highlight pixel interval; through dynamic corresponding and linearization inhibition control of luminance and transparency, the application stabilizes the transparency change in the highlight area, avoids reverse color and light emission artifacts; and through transparent transition layer reconstruction and frame sequence output control, smooth transition and continuous display are realized, and the naturalness and system stability of animation display are improved.

The invention discloses a digital earth roaming animation generation method, tool and device based on an unreal engine, and relates to the technical field of geographic information systems.The digital earth roaming animation generation method comprises the steps that an observation target of a digital earth roaming animation is determined, a preset manipulator is adopted, the observation target serves as the center, a camera is controlled to move, and the digital earth roaming animation is generated; the method comprises the steps of obtaining a key frame corresponding to each observation target, editing each key frame by adopting a preset editing panel to obtain sub-animations, connecting all the sub-animations to generate an initial animation, and interpolating every two sub-animations in the initial animation by adopting a preset interpolation algorithm to generate the digital earth roaming animation. According to the invention, the technical problem of low continuity of the digital earth roaming animation generated in the prior art is solved.

The invention discloses a retail environment digital media transmission system based on streaming media push-flow middleware, which comprises a signaling system streaming media AI identification technology, a signaling system streaming media encryption technology and signaling system streaming media player software, and is characterized in that AI identification verification is carried out on media content pictures of a player through the signaling system streaming media AI identification technology; therefore, the digital media content can be identified to meet relevant national laws, and illegal content spreading is avoided. The invention has the following beneficial effects: network dependence: (MECT) signaling system streaming media encryption caching technology can store the encrypted copy of the played content on the user equipment, so that even if the network condition is temporarily poor, the user can continue to watch the cached content, and the playing interruption caused by network fluctuation is reduced; the encryption of the cached content can ensure that an unauthorized user cannot access the media content in the cache even if the equipment is lost or stolen, so that the watching experience of the user is protected.

The invention discloses an audio and video code rate adjusting method and device, a program product and electronic equipment, and relates to the field of financial science and technology or other related fields, and the code rate adjusting method comprises the steps: collecting performance data and network data of target equipment, obtaining audio and video original stream data, and transmitting the audio and video original stream data to a server; the method comprises the steps of constructing multi-modal data based on performance data, network data and audio and video original stream data, determining a reference code rate based on the multi-modal data, determining target encoder parameters of a target encoder based on the reference code rate and the multi-modal data, and determining the target encoder parameters of the target encoder based on the target encoder parameters. And performing code rate adjustment on the audio and video original stream data by using the target encoder to obtain target audio and video stream data. According to the invention, the technical problem that the code rate of audio and video cannot be accurately adjusted in the prior art is solved.

The invention discloses an object control type game operation method and device, equipment and a storage medium. The method comprises the steps that game resources of an object control type game are loaded, and an event response component in the game resources is initialized; according to a hypertext markup language file and a cascading style file in the game resource, rendering a first container and a second container in a game interface of the object control type game; binding the style attributes of the second container, the first object and the second object with the type of the target touch event through an event binding mechanism of the event response component; when the target touch event is monitored, adjusting style attributes of the second container, the first object and the second object according to touch data of the target touch event; generating a key frame animation according to the adjusted style attribute of the second container and the second object, generating a sequence frame animation according to the adjusted style attribute of the first object, and rendering an animation that the object carried by the second container flows to the first container on a game interface according to the key frame animation and the sequence frame animation.

The embodiment of the invention discloses a GPU animation method based on unity, a computer readable storage medium and terminal equipment. The animation method comprises the following steps: S1, in an animation development stage, storing resource information in an animation in a map according to a time axis; s2, in an animation running stage, calculating time information of a current animation frame by a CPU (Central Processing Unit) of the animation device according to the time dimension information of the animation; s3, the CPU of the animation device transmits the time information of the current animation frame to the GPU of the animation device; and S4, the GPU of the animation device collects resource information in the chartlet according to the received time information of the current animation frame, and renders to obtain the current animation frame. According to the unity-based GPU animation method disclosed by the embodiment of the invention, the resource information of the animation is stored in the chartlet, and the partial calculation process of the CPU of the animation device is carried out by the GPU of the animation device, so that the calculation capability of the GPU is fully utilized, the calculation capability of the CPU is greatly released, the calculation load of the CPU is reduced, and the playing process of the animation is smoother.

The application discloses a video data transmission method and system, and the video data transmission method comprises the following steps: a data prediction step, in which state data of a next moment of a playing terminal is determined according to state data of a current moment of the playing terminal; a network capability prediction step, in which predicted network capability of the playing terminal at a future moment is determined according to the state data of the next moment and a pre-constructed network quality map; and a transmission parameter adjustment step, in which video data transmission parameters of the playing terminal at the next moment are pre-adjusted based on the predicted network capability, so as to avoid network congestion possibly occurring at the future moment in advance.

The invention relates to a harmonica (100) comprising at least: a. a comb (130) comprising a plurality of chambers (131); b. a first plate (110) comprising a plurality of blow reeds (111); c. a second plate (120) comprising a plurality of draw reeds (121); the harmonica (100) being characterized in that: d. each chamber of the plurality of chambers (131) comprises at least one material protrusion, each material protrusion being configured to reduce the oscillation space of a draw reed (121); and in that the harmonica comprises: at least one additional plate (150) arranged above the first plate (110) and comprising a plurality of additional material protrusions (155), each additional material protrusion (155) of the plurality of additional material protrusions (155) being configured to reduce the oscillation space of a blow reed (111).

The embodiment of the invention discloses a VR live broadcast method and device and electronic equipment. The method comprises the following steps: acquiring a panoramic video stream of a first resolution and a panoramic video stream of a second resolution; wherein the first resolution is higher than the second resolution; decoding the panoramic video stream with the second resolution, and determining a video picture coincident with the visual angle of the VR client based on the decoded panoramic video stream with the second resolution; decoding a video stream corresponding to the video picture in the panoramic video stream with the first resolution; and displaying the decoded video picture with the first resolution ratio. Through the mode, the decoding pressure of the VR client for the high-definition live broadcast demand can be relieved, and the live broadcast picture can be smoothly played while the picture quality of the live broadcast is improved (the screen window effect is reduced) by only decoding the high-resolution panoramic video stream under the current view angle for display.

The invention discloses an image data playing method and device, equipment and a medium, and relates to the technical field of computers, and the method comprises the steps: starting a real-time data caching operation to send ultrasonic image data of a plurality of modes collected in real time at present to a preset cache region for caching; monitoring real-time target cache information of a preset cache region; and after the real-time target cache information meets a preset condition, starting an image playing operation, so as to call the to-be-played image data of a plurality of modes corresponding to each image playing moment from a preset cache region cache based on a preset image refreshing rule and play the to-be-played image data. According to the method, the ultrasonic image data, collected in real time, of a plurality of modes are cached in the preset cache region, and the image playing operation is started after the preset condition is met, so that when the ultrasonic image data need to be played at each image playing moment, the ultrasonic image data can be played; and the corresponding to-be-played data is the data which can be directly called from the preset cache region and can be directly displayed, so that the whole playing process is smoother.

The invention relates to the technical field of video stream data processing, in particular to a video stream playing method, device and equipment and a storage medium, and the method comprises the steps: setting an interface for requesting a photo; sending a request through the address, and obtaining a photo; detecting the format of the photo; decoding the picture which is detected to be qualified; and performing graph drawing on the photo to generate a video stream, or processing the photo into the video stream by adopting an encoder. According to the method, the photo is acquired from the address, and the format of the photo is detected, so that automatic frame drop and automatic degradation of photo decoding are realized, smooth playing of the video stream is ensured, and the user experience is improved.

The invention discloses a patient state identification information pushing system and method for a smart ward, and belongs to the technical field of video engines, and the system comprises a video display module, a buffer area adjustment module, a code rate initial adjustment module and a code rate secondary adjustment module. Wherein the video display module is used for obtaining a video fluency index so as to obtain a video fluency judgment result; the buffer area adjusting module obtains a network congestion state judgment result, analyzes and obtains a buffer area adjusting judgment result in combination with a video fluency judgment result, and adjusts the size of a buffer area; the code rate initial adjustment module is used for analyzing and obtaining a code rate adjustment judgment result based on the size of the adjusted buffer area so as to carry out corresponding code rate adjustment; and the code rate secondary adjustment module is used for acquiring and analyzing the video fluency index after code rate adjustment, thereby performing corresponding secondary adjustment on the initial code rate, and solving the problem that video fluency and definition cannot be both considered in the prior art.

The invention discloses a method and system for improving video frame processing speed by using a sequence technology, and belongs to the technical field of video processing, and the method comprises the following steps: S1, extracting each frame of a video; s2, creating a playing sequence, putting a buffer frame, and determining buffer time according to the final total processing time; s3, putting each frame extracted from the video into a playing sequence frame by frame; s4, firstly calculating a frame extraction interval; extracting corresponding frames according to the frame extraction interval and putting the corresponding frames into a to-be-processed sequence; s5, firstly extracting a frame from the to-be-processed sequence, running a frame processing algorithm to obtain a processing result, and then putting the frame and the processing result into a processed sequence; and S6, extracting a frame and a processing result from the processed sequence, and feeding back the frame and the processing result to the playing sequence. On one hand, the video can be smoothly played without being limited and influenced by resources; and on the other hand, by optimizing the resource configuration, the number of the detected frames is remarkably increased, so that the occurrence of frame missing phenomena is effectively reduced.

This application discloses a sound effect processing method, apparatus, storage medium, and electronic device. The method includes: determining the physical parameters of a virtual mobile vehicle; determining, based on the vehicle type of the virtual mobile vehicle, whether a vehicle sound source is configured on the virtual mobile vehicle, wherein the vehicle sound source is a sound source obtained by merging the motor sound source and the external speaker sound source of the virtual mobile vehicle; if a vehicle sound source is configured on the virtual mobile vehicle, generating a target sound effect corresponding to the physical parameters based on at least one layer of sound effect structure pre-configured for the vehicle sound source, wherein the at least one layer of sound effect structure is a hierarchical structure obtained by layering the sound effects emitted by the motor sound source and the sound effects emitted by the external speaker sound source; and controlling the vehicle sound source to play the target sound effect. This application solves the technical problem of low design performance in simulating the sound effects of virtual mobile vehicles in related technologies.

The present application relates to an animation rendering method, device, computer-readable storage medium and computer equipment, the method comprising: obtaining an animation file in a target format; determining an animation drawing data interval obtained by decoding the animation file and meeting a static condition; caching the starting animation drawing data in the animation drawing data interval; when the animation drawing data corresponding to the frame to be played during the playback of the animation file meets the static condition, reading the cached starting animation drawing data corresponding to the frame to be played; performing animation rendering according to the read starting animation drawing data. The solution provided by the present application can reduce the amount of calculation in the rendering process and ensure the smoothness of animation playback.

The invention is suitable for the technical field of high-definition video wireless transmission, and provides a high-definition video wireless transmission control system, which comprises a video transmitting device, a video receiving device and video playing equipment, the video sending device comprises a video sending device, a video receiving device and video playing equipment; the video sending device comprises a content decomposition module, a bit grouping module, a network decomposition module, a field conversion module and a wireless sending module. The video receiving device comprises a wireless receiving module, a video decoding module, a decompression calculation module, a wireless transmission module, a wireless network module, a memory and a processing center, and the wireless receiving module, the video decoding module, the decompression calculation module, the wireless transmission module, the wireless network module and the memory are respectively connected with the processing center; the video playing device comprises a wireless communication module and a video playing module. According to the invention, the problems of time delay, lagging, low transmission image quality and the like during wireless video playing are solved.