344 results about "Holographic display" patented technology

The invention relates to the technical field of computer-generated holographic three-dimensional display and deep learning, in particular to an unsupervised deep learning method for realizing three-dimensional holographic display. The method comprises the steps of generating a depth map corresponding to a two-dimensional image; the depth image and the two-dimensional image are spliced in the channel dimension to serve as input of a hologram encoder, and a double-U-Net cascade neural network architecture serves as the hologram encoder; angular spectrum diffraction back propagation is carried out through the generated pure phase hologram to realize three-dimensional scene discretization reconstruction, a reconstructed image with a specified depth is obtained, a depth map is uniformly quantized to obtain a plurality of binary masks, loss calculation is carried out on the reconstructed image and a target image superposed with the corresponding depth binary masks, network parameter optimization is carried out, and a target image with the depth corresponding to the target image is obtained. And when the training of the double U-Net cascade neural network architecture is converged, the training stage is ended. According to the method, high-quality three-dimensional hologram reconstruction is realized through layered angular spectrum propagation, and the method has relatively high precision and detail reduction capability.

The invention discloses a multi-dimensional holographic image real-time rendering method and system based on dynamic light field modulation, and relates to the technical field of holographic display, the method is applied to terminal equipment and a server, the terminal equipment determines a space coordinate range based on quantum dot super-structure surface characteristics by obtaining related parameters of a target holographic scene, and the real-time rendering of a holographic image is realized. A quantum dot excitation sequence is generated to regulate and control the micro-nano structure of the super-structure surface, a joint coding model is constructed, a target light field modulation instruction set is generated through optimization, corresponding multi-dimensional light field data is requested from a server, and a holographic scene is generated through processing, fusion and rendering; the server receives the request, calls original holographic data, constructs a coding model and a compression model, and sends multi-dimensional light field data subjected to entropy compression to the terminal through a multi-channel transmission protocol; according to the method, efficient real-time rendering of the multi-dimensional holographic image is achieved, the rendering efficiency and quality are improved, and the method is suitable for scenes with high requirements for real-time performance of the holographic image.

A safety and alarm system for vehicles which is designed to enhance safety by preventing risks associated with leaving vulnerable individuals or pets in locked vehicles is disclosed. The system comprises a durable, weatherproof housing attachable to the ceiling of the vehicle including one or more of a 360-degree infra-red camera, a motion sensor in the vehicle seats, CO2, CO, and temperature sensors. Each sensor is associated with a predetermined threshold. The system includes a processor and a wireless chip, and communicates with a handheld electronic device, enabling real-time alerts and remote monitoring. The smartphone application associated with the system enables for customization of alerts, holographic display controls on the windows, viewing of vehicle interior and communication with vehicle occupants via camera, and system activation / deactivation. Additionally, the system includes GPS functionality for emergency location tracking, enhancing the safety and response measures in critical situations.

The invention discloses a real-time dynamic rendering method and system for holographic interaction display, and relates to the technical field of holographic interaction display and real-time light field rendering, and the method comprises the steps: collecting a multi-modal interaction signal in real time, and dynamically generating an attention thermodynamic diagram through a space-time alignment algorithm; compressible motion primitives in the scene are extracted based on Lie group SE (3) motion manifold analysis; constructing a sparse sampling light field calculation model according to the attention thermodynamic diagram and the motion primitives, and dynamically adjusting the compression ratio; and performing non-rigid deformation correction on a phase error caused by interaction by adopting a dual-channel feedback compensation mechanism. Holographic display is driven based on a multi-mode interaction signal, the motion trajectory prediction precision is improved through Lie group SE (3) motion manifold analysis, and motion errors are reduced; in combination with an attention thermodynamic diagram and a light field compression strategy, optimal allocation of computing resources is realized, and rendering time delay is reduced; the phase error and non-rigid deformation are suppressed through a dual-channel feedback compensation mechanism, the holographic image quality is improved, and the interaction experience is enhanced.

Methods, apparatus, devices, subsystems, and systems for holographically displaying live scenes including one or more three-dimensional (3D) objects are provided. In one aspect, a system includes a holographic capturing system and a holographic display system. The holographic capturing system includes: an optical system configured to generate an optical hologram of a live scene that comprises one or more three-dimensional (3D) objects, and an optical sensor configured to capture sequential optical holograms of the live scene and output sequential hologram data associated with the sequential optical holograms of the live scene, each optical hologram being associated with respective hologram data. The holographic display system is configured to optically reconstruct the live scene in a 3D space based on at least part of the sequential hologram data.

The invention discloses a design method for a metasurface non-staggered polarization multiplexing holographic display device, and the method comprises the steps: carrying out the phase analysis of an initial polarization detection signal according to a phase recovery algorithm, and obtaining phase analysis information; receiving an incident polarized light signal and an emergent polarized light signal to construct emergent light complex amplitude, and combining phase analysis information to obtain analysis parameters corresponding to all positions in the metasurface device; constructing corresponding structure-phase delay mapping according to scanning information obtained by scanning, and further performing matching mapping on the analysis parameters to obtain corresponding mapping information; according to the mapping information, microstructure geometric parameters of all positions in the metasurface device are restored, and metasurface device design information is obtained. According to the design method, the holographic display device capable of carrying out independent phase regulation and control on any three polarization states can be designed, and the limitation that a non-staggered metasurface can only aim at orthogonal polarization state regulation and control is broken through; moreover, high-spatial-resolution display imaging can be realized, and the imaging field angle is larger.

The invention belongs to the technical field of micro-nano photoelectrons, and particularly relates to a multi-channel switchable holographic metasurface encryption device and method. The holographic metasurface encryption device is an array formed by nanoscale structure units through two-dimensional periodic continuation, and is called as a phase change dynamic holographic metasurface. Wherein the structural unit is formed by sequentially overlapping a phase change material layer and a metal material layer on a substrate; rectangular holes are formed in the central parts of the phase change material layer and the metal material layer; holographic encryption is realized by utilizing the adjusting capability of the phase change material unit, a plurality of independent holographic image channels are expanded by utilizing the independence of left and right polarization of circularly polarized light, and the switching function of the metasurface holographic display channel is realized through the phase change degree of the phase change material. The phase-change material is introduced into metasurface holographic display, switching of different responses to incident light is achieved through thermal modulation or electric pulse modulation, and therefore different encryption degrees are achieved. The device has a wide application prospect in the fields of optical display, optical calculation and the like.

The invention discloses an AI-based household condition gridding six-dimensional element holographic display system and method, and relates to the technical field of gridding social governance information, and the system comprises a data aggregation module which integrates data across departments and carries out cleaning processing; the data modeling module is used for constructing a space-time model based on a GIS (Geographic Information System) and integrating a multi-source map, and automatically generating and realizing dynamic division of various types of grids for social governance based on the multi-source map; the social governance module is used for collecting data through an AR mobile terminal, processing the data through a clustering algorithm and arranging events according to priorities; the user condition grid module is used for dividing grids, associating six-dimensional data and dynamically associating with workers at all levels; the six-dimensional element module is used for carrying out multi-dimensional statistics on six elements; the holographic display module is used for realizing grid drilling and information visualization; and the intelligent AI module analyzes the data and generates early warning. According to the invention, intelligent analysis and dynamic display of grid information are realized through AI and holographic technologies, and an AI intelligent scheme and an efficient digital scheme are provided for social governance.

The invention discloses a smart scenic spot panoramic management and control system based on AI digital human interaction, and belongs to the field of scenic spot management and control. A smart scenic spot panoramic management and control system based on AI digital person interaction comprises an AI digital person and an intelligent management system. The AI digital person performs data interaction and linkage through the intelligent management system; the AI digital human comprises an AI digital human interaction and holographic display module; the intelligent management system comprises a central control module, an AI digital human interaction and holographic display module, a holographic digital twinning and three-dimensional dynamic modeling module, a data acquisition module, a data processing and fusion module, a prediction and decision optimization module, an equipment linkage control module and a cloud edge collaboration and adaptive optimization module. Data interaction and linkage control among the modules are realized through a data bus or a wireless network; through the arrangement, interaction and display with tourists and managers can be realized through the AI digital human.

The invention discloses a light-emitting super-structure surface capable of realizing incoherent fluorescence holography and multi-dimensional super-structure display and a preparation method thereof. The light-emitting super-structure surface is mainly composed of an optical waveguide structure layer, a micro-nano structure layer and a fluorescence emission layer. The optical waveguide structure layer comprises a substrate and a waveguide layer and is responsible for guiding fluorescence propagation; the micro-nano structure layer is located above the waveguide layer, is composed of nano bricks and can regulate and control light; the fluorescence emission layer is arranged above the micro-nano structure layer, contains quantum dots and is excited by the pump light to emit fluorescence. The metasurface can regulate and control the emergent angle, wavefront and emergent intensity of fluorescent light and pump light, the time-space coherence of the fluorescent light is enhanced through the waveguide layer, and phase modulation is carried out by using a method based on a circuitous phase. Based on the super-structure surface, through the steps of fluorescence excitation, coherence enhancement, phase modulation, diffraction calculation, hologram generation, multi-dimensional display and the like, incoherent fluorescence hologram and multi-dimensional super-structure display can be achieved, and the functions of fluorescence nanometer printing and multi-channel holographic display are covered.

Aspects of the disclosure include a method for controlling a vehicle via a holographic interface. Aspects include detecting a request, by an occupant of the vehicle, to display a holographic user interface and instructing a holographic display device to display the holographic user interface. Aspects also include detecting an interaction between the occupant and the holographic user interface, identifying a desired action for the vehicle based on the interaction, and instructing the vehicle to perform the desired action.

Provided in the present application are an intelligent interaction system and method based on a holographic display device. The system comprises a cloud server, a user terminal and a holographic display device, wherein on the basis of the current contextual information of an application program, a contextual situation event generation module in the user terminal generates a first target contextual situation event associated with a user; a contextual situation event recognition module in the cloud server generates an associated first holographic animation type on the basis of the first target contextual situation event, and sends to the holographic display device a first digital-object-driven message carrying the first holographic animation type; and a holographic animation driver module in the holographic display device parses the first digital-object-driven message, constructs first animation sequence data on the basis of the first holographic animation type, and drives a digital object associated with the user to perform holographic image display. The present application can improve the intelligence and personalization of holographic animation interaction behaviors between a user terminal and a holographic display device, thereby enhancing the usage experience of users.

The invention discloses a dynamic holographic VCSEL chip based on current addressing mode multiplexing, a design method, a dynamic holographic display system and application. According to the current addressing mode multiplexing-based dynamic holographic VCSEL chip implementation method, a multi-mode VCSEL is combined with a current addressing mode multiplexing optical digital hologram, so that an ultra-compact holographic system and an ultra-high switching frame rate are realized. A holographic image is coded using an orthogonal OAM state, and a dominant OAM mode component with a maximum weight coefficient is selected to minimize channel crosstalk. The hologram is directly integrated on the surface of the VCSEL through a 3D laser nanometer printing technology to form a chip comprising a hologram array. And dynamic holographic display is realized by changing the injection current. The method fully considers the crosstalk between addressable current mode multiplexing, remarkably reduces the crosstalk in the optical multiplexing holographic technology through a systematic mode selection process, and improves the quality and efficiency of holographic display and information processing.

The invention discloses a light field display method and system with holography as a representation medium, and the method comprises the following steps: S1, collecting a multi-view image of a target scene, carrying out the coding of the multi-view image, and generating a light field tensor containing space and angle information; s2, mapping the light field tensor in the step S1 into a two-dimensional space phase diagram; s3, converting the two-dimensional space phase diagram in the step S2 into a modulation diagram used for driving a spatial light modulator; and S4, driving the spatial light modulator to perform light wavefront modulation according to the modulation graph in the step S3, and reproducing the image of the target scene through optical diffraction. According to the invention, integration from dynamic scene information acquisition to high-quality three-dimensional image reproduction is realized, a low-redundancy and high-fidelity processing link is realized, and the efficiency and quality of holographic display are greatly improved.

The invention discloses a metasurface dynamic color holographic display method and system, and relates to the technical field of photoelectric display, and the system obtains image and depth data, observation angle and attitude parameters, external illumination parameters and target display area structural feature data in a display device manufacturing process in real time; preprocessing the collected data, fusing illumination parameters to generate a multispectral phase response matrix, and forming a visual angle depth coding map through visual angle and depth joint coding; a dynamic model is trained in combination with an image sequence and environmental parameters, light field distribution prediction and coding instruction output are realized, and the reconstruction quality of a color dynamic holographic image is improved; the color fidelity, the dynamic response performance and the three-dimensional reconstruction accuracy coefficient are calculated and compared with the preset threshold values, real-time evaluation and strategy adjustment of color rendition, the dynamic performance and the three-dimensional effect in the display device manufacturing process are achieved, and the product quality and the display effect of display device manufacturing are effectively guaranteed.

The invention discloses a preparation method of a perovskite photoresist nano composite material and a laser direct writing method. The preparation method comprises the following steps: forming a two-photon photoresist substrate; a CsPbBr precursor solution is formed; and fusing the CsPbBr precursor solution and the two-photon photoresist substrate to form the two-photon photoresist nano composite material doped with the CsPbBr precursor. The perovskite photoresist nano composite material formed by the method can reach hundred-nanometer-level processing precision, and the minimum line width can reach 100 nm. Meanwhile, the preparation method disclosed by the invention is simple and low in cost, and a display device prepared from the perovskite photoresist nano composite material disclosed by the invention has excellent performance and can be applied to the fields of information storage, holographic display and the like.

The invention discloses a metasurface device combined with an F-P (Fabry-Perot) cavity, the metasurface device structurally comprises an upper reflecting layer, a metasurface layer and a lower reflecting layer, the upper high reflecting layer and the lower high reflecting layer form a micro-nano F-P cavity, and the metasurface layer in the middle is formed by an anisotropic medium nano column array. Based on the wavelength selection principle of the F-P cavity, narrow-band filtering can be realized; based on a geometric phase principle, phase regulation and amplitude regulation can be realized by arranging medium nano-columns with specific shapes, sizes and azimuth angles. The geometric phase metasurface is embedded into the micro-nano F-P cavity, and the wavelength, the phase and the amplitude of a light field can be modulated independently at the same time. The invention has the advantages of flexible design, compact structure, strong regulation and control capability, high regulation and control degree of freedom and the like, and has very high application prospects in various practical applications such as light field regulation and control, color printing and holographic display, information storage, optical anti-counterfeiting and the like.

The invention discloses a digital twin video holographic display method and system based on a real geographic space, and the method comprises the steps: reading a real-time image frame at a current moment from real-time video data, and obtaining a real-time image frame according to the visibility and shielding relation between the real-time image frame and a three-dimensional live-action model; the method comprises the following steps: dividing an image texture of a real-time image frame into a texture mapping overlapping region and a non-overlapping region, for the texture mapping overlapping region, combining a plurality of historical image frames as a texture source, and adopting a multi-source texture fusion algorithm based on real geographic space consistency to reconstruct a texture map of the texture mapping overlapping region; dynamically mapping the texture map to the surface of the three-dimensional live-action model to obtain video-model data after texture mapping; and transmitting video-model data into a holographic display system, and displaying a holographic image according to the position difference of the eyes of the observer in the space. According to the invention, accurate space fusion is carried out on the three-dimensional real scene model and the real-time video data, and real, real-time and spatially synchronized three-dimensional holographic presentation of a physical scene is realized.

A method, apparatus, and computer-readable medium for sensor-based application deployment with holographic output, including executing a sensor analysis application configured to interface with one or more hardware sensors at the local deployment site and generate result data based at least in part on data captured by the one or more hardware sensors, transmitting holographic display instructions to a holographic display device at the local deployment site, the holographic display instructions being determined based at least in part on one or more of the sensor data or the result data, and transmitting the result data to a remote server over the computer network, wherein the remote server is configured to identify one or more communications channels and transmit one or more alerts over the one or more communications channels based at least in part on the received result data.

The invention provides an interactive three-dimensional holographic display method for a smart farm, and relates to the technical field of smart agriculture and holographic visualization. Comprising the following steps: firstly, performing multi-angle aerial photography in different growth stages of a rice field through an unmanned aerial vehicle to collect image data; processing the data by using a three-dimensional reconstruction algorithm, and constructing a three-dimensional model library of the rice field; on the basis, a voice interaction module is integrated to a visual platform, so that a user can select and switch models and inquire growth information through voice control; further converting the selected three-dimensional model data into structured data suitable for holographic reconstruction, and generating a high-fidelity digital hologram by applying a complex-valued convolutional neural network point cloud gridding algorithm; and finally, performing optical reconstruction on the hologram by driving holographic display equipment. According to the method, the limitation of a traditional two-dimensional image in space and time sequence expression is overcome, dynamic visualization of the rice field growth process is achieved, and the monitoring and decision-making effects are improved.

The invention discloses a pure phase hologram coding method based on an unsupervised learning neural network, and belongs to the technical field of information optics, and the method comprises the steps: obtaining and preprocessing an original target image, taking the intensity of the original target image as the amplitude, and constructing a complex amplitude matrix through combining with an initial phase; randomly selecting parameters from the wavelength training table and the propagation distance training table, and propagating the complex amplitude matrix by adopting an angular spectrum diffraction algorithm to generate a complex amplitude hologram; inputting the hologram into a POH-Net deep neural network model, extracting features and mapping the features into a pure phase hologram; and according to the pure phase hologram, reconstructing an image by using reverse angular spectrum propagation, and optimizing network parameters by using an Adam optimizer by taking the loss between the amplitude of the image and the amplitude of the original target as a loss function until convergence. The method supports rapid pure phase hologram generation in complex scenes of multiple wavelengths, multiple distances and the like, and provides effective technical support for practical application of holographic display and a high-performance CGH system.

The invention relates to the technical field of marketing systems, in particular to an AI-based holographic marketing system and a thinking expression use method, comprising a holographic display module used for generating a three-dimensional holographic image according to a preset model and realizing dynamic immersive display in a specified space; the data acquisition module is used for acquiring physiological and behavior data of a user in real time through sensors such as an integrated electroencephalogram interface, an eye movement tracker and a facial expression capturing camera; the AI marketing engine module is used for carrying out multi-modal fusion and emotion and intention recognition on the collected data, and the multi-modal physiological behavior data such as electroencephalogram signals, eye movement data and facial expressions are collected, preprocessed and fused in real time, so that the emotion state and the thinking intention of a user can be accurately recognized, and the user experience is improved. And the personalized marketing strategy is dynamically generated in combination with the context information, so that immersive, intelligent and emotion-driven holographic marketing display is realized, and the pertinence and interactivity of the marketing effect are improved while the user experience is remarkably improved.

The invention discloses an elevator digital twin modeling method, and relates to the technical field of elevator emergency disposal, the method comprises the following steps: obtaining multi-dimensional monitoring data of a target elevator; building an elevator multi-dimensional digital dynamic simulation model according to the elevator basic parameters and the physical model parameters; based on the character / voice / video / model multi-dimensional display technology of mixed reality, an elevator running state 3D holographic display model is established, the elevator running state, the position of trapped people and alarm information are visually displayed, and rescue aid decision making and visual guidance are provided. And rescue aid decision making and visual guidance are provided.

The invention discloses an artistic design system and method based on a VR technology, and belongs to the technical field of creativity interaction, and the system comprises a data collection module which is used for obtaining the omnibearing information data of a creativity product; the holographic imaging module is used for obtaining a three-dimensional image of the cultural and creative product according to the omnibearing information data and projecting the three-dimensional image on a holographic display screen; the live-action collaboration module is used for fusing the three-dimensional image of the cultural and creative product with a space map and providing independent or collaborative interaction experience; the user interaction module is used for automatically adjusting a control instruction according to the specific gesture action of each user so as to dynamically adjust the three-dimensional image of the cultural and creative product on the holographic display screen; the content management module is used for managing and updating all-around information data of the cultural and creative products; and the security verification module is used for allowing the authorized user to access and interact with the three-dimensional image of the creative product. The problem that in the prior art, Chinese creative product display lacks interactivity and personalized experience is solved.

The invention discloses a three-dimensional vector holographic display device based on a medium metasurface and a display method. The three-dimensional vector holographic display device comprises a substrate and a nano structure unit on the substrate, the nano-structure units are arranged on the substrate according to specific phase distribution to form a nano-structure unit array; when light waves enter the three-dimensional vector holographic display device, the light waves are modulated by the nanostructure units, transmitted light waves are emitted through a plurality of independent space channels, adjustable patterns of different polarization states can be generated on a plurality of planes in a combined mode, and three-dimensional vector display is achieved. According to the invention, longitudinal regulation and control of amplitude, phase and polarization of light waves can be realized in a broadband range, super-surface display is expanded to a three-dimensional vector form from a two-dimensional scalar form, and the method can be applied to the fields of high-capacity optical storage, optical information encryption, quantum optical technology and the like.

An ultrasound probe captures real-time images of patient anatomy, which are analyzed by a processor to extract salient features pertaining to an anatomical structure. By tracking the location and orientation of the ultrasound probe, a model of that anatomical structure can be created. A visual indication of the position of segments of the anatomical structure can be presented holographically to a user of an augmented reality headset to provide information extracted from the ultrasound imaging, such as holographic display of a model of the anatomical structure at the approximate location of the visual field of the headset corresponding to the physical location of the actual anatomy being viewed by a user, without presenting the entirety of the ultrasound image to the user.

The application discloses a substation maintenance system determination method, system, electronic equipment and storage medium. The method comprises the following steps: determining the power engineering information model corresponding to the current substation according to the environment information of the environment to which the current substation belongs; determining the device model information base corresponding to the current substation according to each power device, the power device identifier and the device association information of the corresponding power device located in the environment; determining the holographic display and operation and maintenance detection system for displaying the current substation and each power device located in the current substation; and determining the maintenance system applied to the substation based on the power engineering information model, the device model information base and the holographic display and operation and maintenance detection system, so as to simulate the maintenance of the power device based on the maintenance system. Based on the above technical scheme, the problem that the existing scheme cannot simulate the maintenance scheme when the power device is maintained and repaired, thereby causing high maintenance cost, long time and poor efficiency is solved.

An optical assembly is provided for use in holographic display of a replay image. The optical assembly may be of particular use is an augmented reality headset. The optical assembly includes a light-modulation element arranged to be illuminated off-axis by a light beam. The light-modulation element modulates the incident light to generate a replay image and generates a zero-order light beam. A focusing system is arranged after the light-modulation element. A light remover is positioned after the focussing system and is configured to remove the zero-order light beam from the light focussed by the focussing system. The focussing system is configured to focus zero-order light from the light-modulation element in a first plane different from a second plane which is the plane of focus of parallel light of the replay image. The light remover removes the zero-order light in the first plane.

The application provides an orbital angular momentum and wavelength dual multiplexing polarization sensitive zooming super lens based on an orbital angular momentum and wavelength dual multiplexing polarization sensitive zooming super lens, characterized in that the super lens is composed of a silicon dioxide substrate layer and a silicon elliptical nanometer column medium layer. Through an orbital angular momentum topological charge number orthogonality and wavelength selectivity dual multiplexing mechanism, combined with a polarization sensitive design, a geometric phase regulation mechanism, the silicon elliptical nanometer column array is optimized through size and rotation angle, 0-2pi full phase coverage is realized, different orbital angular momentum modes, different wavelengths and left-handed / right-handed circularly polarized incident light are precisely demultiplexed in a 400-700nm visible light band, multi-channel independent zooming can be realized, and the focusing efficiency is greater than or equal to 65%. The application solves the defects of single zooming function, limited channel capacity and poor polarization compatibility of the traditional super lens, has compact structure and high integration, and can be widely applied to the fields of miniature imaging systems, optical communication, holographic display and the like.

The utility model relates to the technical field of holographic display screens, in particular to a holographic projection display device. Comprising a base, a transmission mechanism, a holographic display screen, a PCBA control card, a rotary shell and a holographic lens assembly. The transmission mechanism is installed on the base, and the output end of the transmission mechanism is connected with the rotating shell to drive the rotating shell to rotate; the holographic display screen and the PCBA control card are mounted in the rotary shell; the holographic lens assembly is mounted on the rotary shell; the PCBA control card is in communication connection with the transmission mechanism and the holographic display screen. The holographic projection display device provided by the utility model not only can realize the rotation of a holographic projection picture, but also can ensure the stability of the rotation, the stability of the whole device, and the projection quality.