85 results about "Spatial simulation" patented technology

A system can include a voxel database and the set of applications. The voxel database can include a set of voxel indexed records, wherein the voxel database manages a volumetric storage space corresponding to a real-world volumetric space, where units of real-world volumetric space and data specific to these units map to voxels and attributes of voxel indexed records. Each of the applications can include a user interface that renders a volumetric simulation space that corresponds to the volumetric storage space. Geospatial data for the simulation space can include visual attributes used to render a graphical user interface representation of the simulation space, where these visual attributes are acquired from the voxel database. The applications can have different geospatial formatting and content needs from each other, yet the content needs of each of the applications can be supported by the voxel database.

A geospatial modeling system may include a geospatial model database and a processor. More particularly, the processor may cooperate with the geospatial model database for inpainting data into at least one void in geospatial model frequency domain data based upon propagating contour data from outside the at least one void into the at least one void, and for converting the geospatial model frequency domain data after inpainting into geospatial model spatial domain data.

A geospatial modeling system may include a geospatial model database and a processor. More particularly, the processor may cooperate with the geospatial model database for inpainting data into at least one void in geospatial model frequency domain data based upon propagating contour data from outside the at least one void into the at least one void, and for converting the geospatial model frequency domain data after inpainting into geospatial model spatial domain data.

The invention provides a wetland landscape surface layer cold and wet climatic element GIS space simulation method based on remote sensing data, and relates to the wetland landscape surface layer cold and wet climate space simulation method based on the remote sensing data. The method solves the problem that temperature space distribution with high precision cannot be obtained in an existing space interpolation method. The method includes the steps of obtaining vegetation index data set NDVI of an MODIS remote-sensing image in a research area, a surface temperature data set LST and a precipitable water data set Pw, building an inversion model of surface layer temperatures and relative humidity, obtaining space distribution of internal temperatures and surface layer relative humidity of wetland patches and dry land patches, obtaining an average value of surface layer cold and wet climatic elements of the wetland patches and the dry land patches, building a horizontal changing model of a cold and wet climate element edge effect, and carrying out space simulation on surface layer temperature and humidity under a wetland landscape scale by means of GIS techniques. The method can be widely applied to the space simulation of wetland landscape climate.

The invention discloses a spatial simulation method for plant species richness distribution. The method is implemented by mainly comprising the three steps of firstly, on the basis of collecting and preprocessing natural reserve plant species data, land utilization / coverage data, annual average biological temperature and precipitation data, DEM data and soil data of a research area, realizing spatial processing and statistical analysis of parameter factors; secondly, establishing optimal equations of correlation between plant species richness and three major habitat factors including a land utilization / coverage area, an environmental factor and a land utilization / coverage type structure index; and finally, realizing comprehensive integration of the optimal correlation equations of the three major factors, constructing the spatial simulation method for the plant species richness, and realizing spatial simulation analysis of the plant species richness. The method not only can realize spatial distribution simulation of the plant species richness in a meso-macro-scale but also has very high simulation precision and very high operability.

The invention discloses a culture space simulation method based on the multimedia digital technology. The method comprises the following steps: constructing a virtual simulation system by relying on the computer virtual reality (VR) technology, and conducting interactive simulation and information exchange through use of various types of interactive equipment in a virtual environment by a use; conducting digital reproduction on cultural heritage through the image and computer imaging technology by a vision-based method, and preserving and reproducing the historical memories of temples and ancestral halls as cultural space in changes by utilizing the advanced virtual reality + temples and ancestral halls multimedia digital technology. According to the culture space simulation method, the conventional virtual reality technology is adopted to simulate the most prosperous scene at the time and reproduce the former Tang river historic building cultural scene to the world; the spreading design of the original style of the Tang river basin historic buildings is based, new landscapes and functional properties are selectively endowed, the landscapes are reproduced through the simulation and reproduction design, the peculiar humanity and geographical position complex is created, and the folk culture of the Ou Yue region is continued.

The invention relates to a method for calculating the pollution load of urban rainfall runoff by a geostatistical model. The method discloses a method for calculating the pollution load of urban rainfall runoff based on the geographic information technology. The method comprises following steps: rainfall runoff pollution information collection; spatial information database establishment; optimal GIS model construction and model processing; road surface (ground) runoff pollution load calculation; area runoff pollution load calculation. GIS technology is introduced to the method for the analysis of the rainfall runoff pollution spatial distribution features so as to reduce the mistakes brought by the subjective methods; at the same time, the GIS technology which is used for spatial simulation and analysis of rainfall runoff pollution is a quick and accurate method for calculating the pollution load of urban rainfall runoff; the method can provide scientific guidance for effective control strategy of rainfall runoff pollution, enforcement of pollution control measures and development of sponge city construction.

The invention relates to an inkjet printing quality fuzzy evaluation method which is characterized in that the image acquisition technology is used for realizing the transformation between inkjet printed images and digital images, and the evaluation performed by the human visual system to inkjet printing colors is simulated based on a S-CIELAB color space; by utilizing the mass distribution theory, the ink absorption amount of inkjet printing paper for a single pixel point is simulated; and by utilizing the measure theory, inkjet printing clarity quality is estimated. On a basis of the colors and the clarity quality and with a combination of human visual characteristics, an inkjet printing quality fuzzy evaluation algorithm is established, and a numerical value Image-QAIJP is given to the algorithm. The method has few test data and fast speed, effectively overcomes the defects that a printed image quality subjective evaluation method wastes time and money, and a conventional objective evaluation method is single or is not matched with an actual image quality, and provides an effective measure for inkjet printing quality analysis. In addition, the needed matched apparatuses are simple, are low in cost and convenient to use.

A method of animation of surface deformation and wrinkling, such as on clothing, uses low-dimensional linear subspaces with temporally adapted bases to reduce computation. Full space simulation training data is used to construct a pool of low-dimensional bases across a pose space. For simulation, sets of basis vectors are selected based on the current pose of the character and the state of its clothing, using an adaptive scheme. Modifying the surface configuration comprises solving reduced system matrices with respect to the subspace of the adapted basis.

The invention discloses a method and a device for simulating global illumination in a scene. The method comprises the steps that a three-dimensional scene space is simulated to be formed by a plurality of continuous spatial polyhedrons; for each vertex of the spatial polyhedrons, a camera is respectively simulated to face toward the vertex to perform image capturing on the three-dimensional scene space in multiple preset directions taking the vertex as a benchmark, and multiple scene images simulated in the multiple preset directions are acquired; ambient light color information of the vertex in the preset directions is determined according to pixel colors of each pixel in the scene images simulated in the preset directions; the acquired ambient light color information of each vertex of each spatial polyhedron in the different preset directions is stored to be global illumination parameters of the three-dimensional scene space. The method and device disclosed by the invention can improve the accuracy of ambient light information of different spatial position points in the built scene, thereby being conducive to reflecting global illumination effects of a dynamic object more authentically.

The invention discloses a spatial position simulation and calibration method. The method includes: utilizing a laser beam reflected by a plane mirror to perform space angle calibration between models A and B and an engine, in other words, replacing an axis of the engine with the laser beam, mounting the plane mirror on a plane perpendicular to the axis, if the laser is not perpendicular to the plane, forming an included angle between an incident laser beam and the reflected laser beam, and determining size of angular deviation by comparing positions of the incident laser beam and the reflected laser beam at a remote location; utilizing an engine center calibrator to align the model B and the engine, in other words, enabling the laser beam to pass through a center hole of the engine enter calibrator, adjusting a three-dimensional mobile device to enable the laser beam passing through the center hole to irradiate the center of the model A, and completing spatial position simulation and calibration between the models A and B. the method has the advantages that relative position adjustment of the engine and test piece models which are contactless is realized in three-dimensional space conveniently, accuracy of adjustment is high, and the angular deviation and positional deviation between the modes are not more than 0.1 degree and 0.2mm respectively.

The invention belongs to the technical field of ecological functional areas, and particularly relates to a three-generation space optimization method based on external ecological function positioning,which comprises the following steps: (1) simulating a three-generation space quantity structure, wherein the three-generation space quantity structure is constructed by taking maximum ecological system service value as a target according to national key ecological function area requirements, and is obtained through a gray linear programming model; (2) configuring a three-generation space pattern;constructing a MLP-CA model by combination of multi-layer neural network and cellular automaton,wherein the model comprises two modules, namely a training module and a simulation module; in the training module, the trained network is utilized to automatically obtain internal conversion rules, the external conversion rules are superposed, and then the conversion rules are input into the simulationmodule to complete the three-generation space simulation operation process. According to the method, three-generation space optimization under ecological function positioning is highlighted, and synchronization of three-generation space quantity simulation and pattern configuration is realized.

The invention discloses an impact-proof buffer release control method and experiment apparatus for a space tether system combination body. The impact-proof buffer release control experiment apparatus comprises a master control computer, a visual sense detection device, an optics identifier, an object emulator, an elastic tether, a tether folding and unfolding apparatus, a task platform emulator and a basic platform. An impact-proof buffer release ground experiment platform capable of simulating a space microgravity environment is designed, and a foundation is laid for verifying effectiveness of proposed control strategies on the ground. The impact-proof buffer control method for the tether system combination body is simple, effective and capable of realizing impact-proof buffer control over the combination body via tension force control over tethers so as to prevent system impact and collision The method is advantaged by simple control, rapid control responses, strong robustness, convenience of engineering implementation and the like. The method is suitable for controlling the space tether system combination body on general occasions. The impact-proof buffer release control method and experiment apparatus can be used for simulating the ground experiment platform in a weightless environment in space, and the platform can be widely applicable and can be used for conducting other relevant space simulation experiments.

The invention discloses a kind of method which can make the motive storage device (includes U disc, mobile hard disc, and the mobile phone with U disc function)enlarge by software, and copy the data on the network sever. The method sets the solidification program on the mobile storage disc, the program starts when the device connects with computer, the data stored in storage device is copied to network sever, and the space of network sever is as the spare and accessorial space of said device. So it can realize the aim to enlarge space by software and increase the data security.

The invention relates to a thermal imager online calibration method under a space simulation environment. A space simulation container is arranged, a black body serving as a calibration device is arranged between the inner wall of the space simulation container and an interlayer of a heat sink and / or in the space simulation container, a test objective is arranged in the space simulation container,a thermal imager is arranged outside or inside the space simulation container, the relative positions of the thermal imager and the black body are adjustable, and by collecting an image of the blackbody, the thermal imager is calibrated online in real time. Accordingly, the calibration device can be flexibly moved in and out in a test, the purpose that in the same test ground, calibration on thethermal imager under the inside and outside circumferences and measurement on the objective can be achieved, and the measuring error is small.

It is possible to easily perform the spatial simulation for a large area. Provided is a computer-readable medium recorded with a spatial simulation program for controlling a computer to execute procedures for calculating a time-based change of a variable in a plurality of numerical grids to reproduce on a computer a time-based change of a phenomenon represented by the variable in a space represented by the plurality of numerical grids, the spatial simulation program including the procedures of: defining a sub domain composed of the plurality of numerical grids (201); setting a forcing condition for the sub domain (204); detecting the sub domain including the numerical grid in which the variable changes with time; detecting the sub domain including the numerical grid in which the variable referred to for calculating the time-based change is positioned (205); and updating variables in the numerical grids constituting the detected sub domain (208).

The invention discloses an air floatation pulley system of a six-degree-of-freedom simulator, relates to an air floatation pulley system, and aims to solve the problem that a traditional simulator cannot meet the requirement of a spaceflight mission for providing six-degree-of-freedom omnibearing three-dimensional space simulation for a satellite simulator. The system comprises an upper frame bodyassembly, a lower frame body assembly, a mounting plate, a plurality of fixed pulleys and ropes. The lower frame body assembly sleeves the upper frame body assembly, the upper frame body assembly andthe lower frame body assembly are both connected with the mounting plate, the fixed pulleys are uniformly distributed and mounted on the upper surface of the mounting plate in the circumferential direction, each fixed pulley is provided with one rope, one end of each rope is connected with the upper frame body assembly, and the other end of each rope is connected with the lower frame body assembly. The system has the characteristics of high precision and high frequency response, the system can improve the satellite ground simulation precision, and the realization of zero gravity in the vertical direction is a key technology related to the development of the six-degree-of-freedom satellite simulator. The invention belongs to the field of six-degree-of-freedom satellite simulators.

It is possible to easily perform the spatial simulation for a large area. Provided is a computer-readable medium recorded with a spatial simulation program for controlling a computer to execute procedures for calculating a time-based change of a variable in a plurality of numerical grids to reproduce on a computer a time-based change of a phenomenon represented by the variable in a space represented by the plurality of numerical grids, the spatial simulation program including the procedures of: defining a sub domain composed of the plurality of numerical grids (201); setting a forcing condition for the sub domain (204); detecting the sub domain including the numerical grid in which the variable changes with time; detecting the sub domain including the numerical grid in which the variable referred to for calculating the time-based change is positioned (205); and updating variables in the numerical grids constituting the detected sub domain (208).

The invention discloses a method and a system for generating a disciplinary knowledge map based on disciplinary logic knowledge relations. The method comprises a step of automatically generating knowledge points and connecting lines and a step of automatically generating knowledge relation lines. The step of automatically generating knowledge points and connecting lines further comprises: a substep of knowledge point configuration, used to generate chapter spatial data and configuration files; a substep of knowledge point connecting line generation, used to generate knowledge point connecting lines; and a substep of knowledge point spatial data generation, used to generate knowledge point spatial data. The step of automatically generating knowledge relation lines further comprises: a substep of knowledge relation configuration, used to generate logic knowledge relation configuration files; and a substep of knowledge relation line generation, used to generate knowledge relation spatial data. The method generates a disciplinary knowledge map meeting map characteristics according to logic description of knowledge structure and based on a geographic element spatial simulation technology, so as to provide convenience for a user to understand subject knowledge structure and visualization query.

In order to overcome the defects of an existing spatial interpolation method, the invention provides a spatial interpolation method and device for soil heavy metals and a computer readable storage medium, and the spatial interpolation method comprises the following steps: by utilizing the principal component analysis and multiple linear stepwise regression functions of SPSS 22.0 and combining the spatial analysis function of Arcgis 10.2, calculating the spatial interpolation of soil heavy metals; analyzing the correlation between the soil heavy metal element content and the environment variable; main influence factors are extracted by analyzing the significant difference of the soil heavy metal content on different types of variables; and then main component analysis is utilized to extract main control environment factors, and a main component analysis improved regression Kriging model fusing natural and human factors is constructed. According to the method, a spatial simulation diagram of various soil heavy metals according with actual spatial distribution can be obtained, and an effective theoretical basis can be provided for risk management and control of the soil heavy metals.

The invention relates to an experiment measurement method and device for laser and space debris mutual effect. The measurement method comprises the following steps of making preparation, namely arranging space debris in a spatial simulation vacuum experiment cabin to enable the space debris to be in vacuum, cold-back and suspended motion states and meanwhile starting a debris motion state measuring system; performing action, namely irradiating laser to the space debris in a one-time, multiple-time or continuous mode to enable the motion states to be changed after the space debris is stressed, meanwhile enabling the debris motion state measuring system to observe and calculate the motion states of the space debris in real time; processing data, namely processing, analyzing and outputting the data. By means of the experiment measurement method and device, the mutual effect process of the laser and the space debris can be really reflected, a three-dimensional six-freedom-degree motion track of the space debris is measured, and mechanical characteristic of the mutual effect of the laser and the space debris is inversed.

A calibration tester for oxyhemograph is composed of a base, an integration semi-sphere connected to base to form a high-leg wine cup's shape, and a disc-shaped working platform on the top of said integration semi-sphere and with one emitting hole and three receiving holes. It can provide a permanent and stable test standard for calibration and static test.

The embodiment of the invention provides a method and system for predicting the soil pollution range of a heavy metal attenuation pollution source, and the method comprises the steps: dividing a target pollution region into a plurality of grids with preset sizes, and building a cellular automaton; for each grid at the current moment, enabling the cellular automaton to calculate the pollutant concentration of each grid at the next moment according to the pollutant concentration of each grid at the current moment, the pollutant concentration output quantity of each grid and the pollutant concentration input quantity of each grid; repeating the process until the number of the standard-exceeding grids reaches the maximum, and taking the boundary of all the standard-exceeding grids as the soilpollution influence range. Aiming at the problem of pollution of a heavy metal attenuation pollution source to surrounding soil, a cellular automaton geographic space simulation framework is adopted,and the cellular automaton is applied to soil pollution range prediction to determine a determination method for terminating iterative computation, so that quantitative dynamic simulation of the influence range of the pollution source is realized.

The invention relates to a realizing method of register window switching technology in dynamic binary translation, belonging to the technical field of computers. The realizing method comprises the following steps: corresponding to all register windows on a source platform by using a section of continuous memory space; storing the address of the current register window in the corresponding simulated memory space on the source platform using a virtual register and simulating a control / state register and a global register by using the other fixed memory space, wherein the control / state register and the global register are irrelevant to the register windows; determining the positions of the registers of the source platform in the simulated memory in a second-level addressing mode; and dynamically adjusting the value of the virtual register when each register window switching instruction is translated at the front end of a translator. The invention uses the second-level addressing mode to enable the value of the virtual register to be adjusted only when each register window switching instruction is translated into an intermediate instruction, thereby effectively reducing memory access frequency and further improving the execution efficiency of object codes after translation.

The invention discloses a simulation measurement method for a community life circle, and provides a space simulation and division method for planning the community life circle after a planning scheme is implemented, which breaks through the limitation that the existing technical method can only identify the current community life circle. By combining mobile phone signaling data commonly used in urban research with regression analysis, life circle identification, prediction, division and evaluation are carried out based on resident behavior characteristics, so that the method has universality and accuracy.

The embodiment of the invention provides a soil pollution prediction method and system for a heavy metal stable pollution source, and the method comprises the steps: dividing a target pollution regioninto a plurality of grids with preset sizes, and building a cellular automaton model; for each grid at the current moment, enabling the cellular automaton model to calculate the probability of pollution of each grid at the next moment according to the probability of pollution of a plurality of neighborhood grids of each grid; repeating the process for a preset number of times, and predicting theprobability of pollution of each grid at a preset moment. According to the embodiment of the invention, a cellular automaton geographic space simulation framework is adopted, and the probability of pollution of the grid at the next moment is predicted through the probability of pollution of neighborhood grids around the grid, so that dynamic simulation of soil heavy metal pollution risk diffusionis realized, and the spatial scale adaptability and precision of simulation are improved.

The invention discloses a habitat factor-based vegetation type spatial simulation method. The method, for spatial complexity and nonlinearity characteristics of vegetation type distribution, introduces an SVM algorithm, and builds a habitat factor-based vegetation type spatial simulation model. The method mainly comprises the three steps of firstly, by utilizing remote sensing and GIS spatial analysis methods, preprocessing basic data of habitat factors such as physioclimate, soil terrains, population traffic and the like of a case area; secondly, adopting a radial basis function (RBF) as a kernel function of an SVM, training an SVM model by applying the preprocessed basic data, searching for optimal model parameters by adopting a grid search method, and building the habitat factor-based vegetation type spatial simulation model; and finally, running and verifying the model, thereby realizing vegetation type spatial distribution simulation of the case area. The method not only facilitates realization of quantitative simulation of vegetation type and vegetation type spatial distribution in a meso-macro-scale but also has very high simulation precision and very high operability.

A system and method for determining the optimal machine working direction(s) of travel for a field boundary to be used in a guidance / navigation system for machine control includes, using specific field boundary information and machine specific information to spatially simulate travel path estimates over a plurality of splayed working directions of travel to determine the optimal working direction(s) of travel for the field boundary. Optimizing the spatial field efficiency by simulating travel path estimates to select an optimal working direction(s) of travel may then be used in accordance with a machine's guidance and / or navigation system, via an information transfer system, as the reference working direction(s) of travel for the machine to guide and control itself while performing fieldwork.

The invention discloses a planning simulation measurement and evaluation method of a community life circle applied to city update. The planning simulation measurement and evaluation method of the community life circle applied to city update breaks through the limitation that the method in the prior art can only recognize the current community life circle, and provides a spatial simulation and division method for planning a community life circle after a planning scheme is implemented. By combining mobile phone signaling data commonly used in urban research with regression analysis, life circle identification, prediction, division and evaluation are carried out based on resident behavior characteristics, so that the method has universality and accuracy. Meanwhile, the community life circle optimization degree of the area before and after the implementation of the urban update plan and the influence on the surrounding area are evaluated by means of quantitative indexes, reference is provided for decision making, and the social benefit of the plan can be improved.

The invention discloses a numerical simulation method for an atmospheric electric field distortion effect of buildings under different parameters. The numerical simulation method comprises the following steps of (1) solving an atmospheric electric field distortion coefficient of the buildings through a finite difference method, wherein the finite difference method is as follows specifically: performing discretization on a researched spatial simulation region, using a finite difference equation to replace a differential equation, performing uniform division after grid discretization for data processing, and solving electric potential values of respective grid points in a discretized space range; and (2) solving the finite difference equation, performing sub-division on grids in the spatial simulation region, solving electromagnetic problems in the spatial simulation region, selecting an iteration factor, and then solving the atmospheric electric field distortion coefficient of the buildings. By performing numerical simulation on the atmospheric electric field distortion effect of the buildings, the actual measurement value of an atmospheric electric field instrument can be revised, so that the accuracy of thunder and lightning monitoring and early warning can be improved.