18 results about "Virtual field" patented technology

The invention provides a user behavior intention recognition method and device based on multi-modal data fusion, and relates to the technical field of data processing.The method comprises the steps that a multi-modal observation sequence is obtained, initial features are formed through time synchronization and mutual information screening, a cross-space initial offset vector is generated in combination with virtual space offset parameters, and the cross-space initial offset vector is obtained; establishing an association relationship between a real action and a virtual action through nonlinear mapping to obtain a cross-space registration feature; generating a correction coefficient according to the proportion of the real action amplitude and the virtual action amplitude, and performing amplitude correction to obtain a cross-space correction feature sequence; compensating rendering delay and synchronous drift by using weighted fusion of the current feature and the lag feature to obtain a time sequence correction feature; outputting cross-space fusion features through a unified embedding space and a cross-modal attention mechanism; and non-linear intention mapping is constructed based on the fusion features, and a user behavior intention result is inferred and output in combination with time smoothing. According to the invention, the accuracy of user behavior intention analysis in a virtual field scene can be improved.

The invention discloses a method and device for generating an environment picture outside a vehicle and the vehicle, and relates to the technical field of vehicles. The method comprises the steps of determining a three-dimensional semantic map corresponding to an external environment of a trailer based on point cloud data and image data corresponding to the external environment of the trailer; determining a virtual model corresponding to the trailer device based on the current attitude data and the trailer parameters of the trailer device included in the trailer; based on the three-dimensional semantic map and the virtual model, displaying a virtual view image corresponding to the trailer; the virtual view picture comprises external environment information of the trailer. In this way, the view coverage rate and accuracy of the generated vehicle exterior environment picture can be improved.

Mobile calibration of a display for a smart helmet is provided. A smart helmet includes a heads-up display (HUD) configured to output a graphical image within a virtual field of view on a face shield of the smart helmet. A transceiver is configured to communicate with a mobile device of a user. A processor is programmed to receive, via the transceiver, calibration data from the mobile device related to one or more captured images from a camera on the mobile device, and alter the virtual field of view of the HUD based on the calibration data. This allows a user to calibrate the HUD of his / her smart helmet based on images received from the user's mobile device.

The present application relates to the field of material mechanical property characterization, in particular to a high-temperature thermal softening variable stiffness and strength metal elastic-plastic parameter global characterization method, comprising: obtaining strain field data and temperature field data of the test piece, and tensile load data; constructing a thermal-mechanical coupling elastic-plastic constitutive model of the metal plate, and establishing a target function of temperature-related parameters to be solved under the constraint of multiple virtual fields based on the virtual work principle; accurately identifying high-temperature thermal softening elastic parameters by using elastic stage data, and then identifying anisotropic strength thermal softening plastic parameters by using composite field data of the whole loading process under variable stiffness; the present application breaks through the condition restriction of constant stiffness when characterizing thermal-mechanical coupling properties of metal materials by using existing test methods, and can realize global accurate characterization of high-temperature thermal softening and anisotropic complex elastic-plastic thermal-mechanical coupling property parameters by only one test, thereby minimizing the number of tests and simplifying the test process.

The invention provides a pregnant and lying-in woman health management journey visualization method and system based on a virtual reality technology, and the method comprises the steps: collecting the health data of a pregnant and lying-in woman in a whole period from a pre-pregnancy preparation stage to a postpartum recovery stage, and carrying out the cross-dimension standardized conversion processing of the collected whole-period health data sequence, a multi-dimensional virtual scene assembly set comprising a physiological cycle feature model, a living environment interaction module and the like is constructed according to the health state feature set, and the health state and the living environment of pregnant and lying-in women are simulated in an all-around mode; a multi-dimensional virtual field component set is subjected to space-time linkage integration, a dynamic continuous virtual health journey covering a whole period is generated through multi-rule constraints, health changes are visually presented, and finally a multi-mode interactive virtual visual interface is generated based on the dynamic continuous virtual health journey, so that the health management effect and quality are improved.

To provide a content distribution system or the like capable of improving motivation, a performance effect or the like of input of a contribution object in content distribution.SOLUTION: A server system for distributing content of a performance performed by a performer on a performer terminal to a viewer terminal of a viewer includes a display processing unit configured to perform display processing of content in which a post object moves in a virtual field in which the performance of the performer is performed, the post object being able to be contributed by the viewer consuming a parameter of the viewer, and a gift giving unit configured to give a gift corresponding to the contributed post object or the consumed parameter to the performer when the post object contributed to the virtual field is collected. And a giving processing unit configured to perform processing of giving a return material corresponding to the contributed post object or the consumed parameter to the viewer who contributed the post object in a case where the post object contributed to the virtual field is not collected.SELECTED DRAWING: Figure 8

The system according to this embodiment aims to provide urban students with opportunities to study at local educational institutions and to make effective use of local educational resources. [Solution] The system according to this embodiment comprises an analysis unit, a proposal unit, a lecture unit, an interpretation unit, and a field trip unit. The analysis unit analyzes students' interests and learning styles. The proposal unit proposes the most suitable local educational institutions and curricula based on the information analyzed by the analysis unit. The lecture unit provides real-time lectures based on the curriculum proposed by the proposal unit. The interpretation unit provides simultaneous interpretation of the lectures provided by the lecture unit. The field trip unit provides virtual field trips based on the curriculum proposed by the proposal unit.

The application discloses a method and device for generating an out-of-vehicle environment picture and a vehicle, and relates to the technical field of vehicles. The method comprises the following steps: determining a three-dimensional semantic map corresponding to an out-of-vehicle environment of a towing vehicle based on point cloud data and image data corresponding to the out-of-vehicle environment; determining a virtual model corresponding to a towing device included in the towing vehicle based on current posture data and towing parameters of the towing device; displaying a virtual field of view picture corresponding to the towing vehicle based on the three-dimensional semantic map and the virtual model; and the virtual field of view picture comprises out-of-vehicle environment information of the towing vehicle. In this way, the field of view coverage and accuracy of the generated out-of-vehicle environment picture can be improved.

The application provides a kind of based on power distribution network construction operation behavior specification detection method, the application relates to power system construction operation safety management and intelligent monitoring technical field, the specification detection method of the application includes: identifying the needle insulator in the video stream collected by first worker and second worker as operation anchor point, generates the steady video stream with insulator as the image physical center;Steady video stream is mapped to cylindrical surface and weighted fusion is carried out, generate panorama, and panorama is logically divided into quadrant field of view containing main visual angle, opposite visual angle and virtual field of view, the compliance area boundary is mapped back to main visual angle by inverse cylindrical-plane projection, and depth and safety distance detection is carried out;Generate dynamic occlusion mask under panoramic space, when detecting that main visual angle is blocked, lock opposite visual angle as complementary window, determine the binding quality under the blocked area by calculating the spiral texture energy and periodic variance in the complementary window.

The invention relates to the technical field of electric power engineering construction safety protection, and discloses an electric power construction vehicle anti-electric shock safety distance early warning system and method based on multi-source perception, and the method comprises the steps: a micro-motion excitation synchronous perception module converts space electric field distribution into time modulation signals through superposing micro-motion signals, and carries out the synchronous collection; the phase-locked chromatography inversion module extracts a gradient signal through orthogonal demodulation and inverts a space potential gradient modulus; the damping mapping prediction module maps the gradient modulus into a virtual field damping matrix, and predicts the maximum displacement boundary of the tail end of the suspension arm in combination with a kinetic equation; and the potential well early warning judgment module compares the instantaneous total mechanical kinetic energy with the maximum dissipated work based on the energy potential well safety criterion, and executes damping enhancement or forced locking operation. According to the invention, through active frequency modulation detection and field machine coupling control, environmental noise interference and inertial electric shock risks are effectively avoided, and the active protection capability under complex working conditions is improved.

Video of a plurality of fields of view of a scene is captured, each field of view comprising data of the scene from a different vantage point. An excitement level is determined by analyzing a portion of the captured video. Using the excitement level, a time series of future excitement levels is forecast. Using the time series of future excitement levels, a virtual field of view path of the scene is forecast. An insert image is determined to be included in the virtual field of view path. Captured data from at least two video cameras in the plurality of video cameras is composited into a virtual field of view of the scene. A rendering of the insert image is inserted into the virtual field of view.

The invention provides a power distribution network construction operation behavior specification detection method, and relates to the technical field of power system construction operation safety management and intelligent monitoring, and the specification detection method comprises the steps: recognizing pin insulators in video streams collected by a first operator and a second operator as operation anchor points, generating an image stabilization video stream taking the insulator as an image physical center; mapping the image-stabilized video stream to a cylindrical surface and carrying out weighted fusion to generate a panorama, logically segmenting the panorama into a quadrant view field comprising a main view angle, an opposite view angle and a virtual view field, mapping a compliance area boundary back to the main view angle through reverse cylinder-plane projection, and carrying out depth and safety distance detection; and generating a dynamic shielding mask in the panoramic space, locking the opposite view angle as a complementary window when the shielding of the main view angle is detected, and judging the binding quality in the shielding area by calculating the spiral texture energy and the periodic variance in the complementary window.

The invention provides a video generation method and apparatus, and an electronic device. The method comprises the steps of displaying a generated first video frame on a graphical user interface; the first video frame displays a virtual scene in a preset virtual field of view; the virtual scene comprises at least one scene element; acquiring operation information input by the input equipment in real time; determining a composite interaction instruction based on the operation information and the first video frame, a view updating instruction for the virtual view range, and / or an interaction action instruction for scene elements in the virtual scene; inputting the composite interaction instruction and the first video frame into a pre-trained video generation model, updating the first video frame based on the composite interaction instruction through the video generation model, and generating a plurality of video frames associated with the virtual scene; and displaying an interactive video formed by the plurality of video frames in the graphical user interface. According to the mode, the generation efficiency of the video comprising the interactive elements is improved, and the video generation cost is reduced.

The embodiment of the present application relates to the virtual reality technical field, and especially relates to a picture display amplitude adjusting method and device.The method is applied to a processing module in a virtual reality (VR) device, and comprises the following steps: sending a ranging instruction to a laser ranging module, the laser ranging module is used for emitting and receiving laser to determine the round trip time of laser propagation according to the ranging instruction; calculating a first distance between the user's eyes and the LCD screen according to the round trip time; calculating a display amplitude reduction coefficient according to the first distance, the distance between the user's eyes and the LCD screen when the virtual field of view angle is maximum, and the distance between the optical lens and the LCD screen; reducing the picture amplitude parameter when the virtual field of view angle is maximum according to the display amplitude reduction coefficient to obtain the current picture amplitude parameter.The embodiment of the present application automatically adjusts the amplitude of the virtual picture display according to the measured distance between the eyes and the LCD.

The invention discloses a virtual field inversion method for determining the stiffness coefficient of a glass fiber reinforced composite material, and the method is characterized in that the method comprises the following steps: S1, balancing the shear strain and the positive strain in two main directions before a virtual field method is applied; s2, performing optimization design of the shape of the sample through commercial finite element software; s3, setting a special virtual field method of iteration initial value application optimization; s4, calculating a relative error of an identification result of each rigidity coefficient, and determining an optimal design parameter under the condition that the sum of absolute values of the relative error is minimum; according to the virtual field inversion method for determining the stiffness coefficient of the glass fiber reinforced composite material, a virtual field method and a finite element are combined to optimize and design the shape and the position of a V-shaped notch of a tensile sample, and a calculation result is substituted into the virtual field method to invert and identify the stiffness coefficient. And comparing an inversion result with finite element input parameters to calculate an inversion error, and taking the geometric shape corresponding to the minimum error as an optimization result of the test piece.

A method of joint signature-virtual field representation of road elements for driving, the method includes receiving, at a machine learning process associated with a vehicle, multiple sensed information units representing a road element captured at different points of time; generating, by the machine learning process, a joint representation of the road element accounting for a class indication of the road element and of a virtual field indication of an impact of the road element on the vehicle; and determining in real time in a driving of the vehicle, based on the joint representation, a driving related output affecting the vehicle.

A moving route recommending method in a virtual field is performed by a processor and comprises: receiving a real-field map and multiple virtual-field maps; setting a beginning point and a terminal point in each virtual-field map within a real movable range of the real-field map; arranging a position of each virtual-field map to have a maximum overlapping area between a virtual map range of the virtual-field map and the real movable range; generating multiple routes different from each other according to a node number, the beginning point, and the terminal point in each virtual-field map; setting the first N routes with lengths longer than the rest routes within the real movable range as recommending routes of the virtual-field maps; and controlling a monitor to display the recommending routes.

A method, apparatus, and medium are provided. The method includes generating a virtual environment (VE) including at least a first shape that precisely fills a virtual field of view from the first virtual viewpoint, receiving from a first hand contact sensor, signaling indicating contact, receiving from a second hand contact sensor, signaling indicating contact, where the second hand contact sensor is a first distance from the first hand contact sensor, tracking the operator's hand motion and updating the VE based on the position of the operator's hand, changing a luminance of the HMD when the virtual hand is within a threshold distance from a virtual representation of the second hand contact sensor, receiving signaling based on changing the luminance of the HMD, and generating a data file encoding the signaling from the first hand contact sensor, the second hand contact sensor, and the light sensor.