91 results about "Planar model" patented technology

Radical hysterectomy, i.e., a surgical method for treating cervical carcinoma, is put forward by Wertheim over 100 years before, becomes a classic of surgical treatment of cervical carcinoma, contributes to increasing the five-year survival rate of a patient suffering from cervical carcinoma by 80-90 percent, but has the defects of great damages, the occurrence rate of 70-85 percent of postoperative urinary bladder dysfunction, and influence on the postoperative life. Laparoscope cervical carcinoma radical-curing nerve-sparing surgery can be used for improving the urinary bladder function after a cervical carcinoma surgery and protecting hypogastric nerves, and is an important surgical link for protecting urinary bladder and rectum functions. Through simulation teaching, doctors are taught with a safe and effective method, students can contact ''patients'' by means of surgical skills before starting a surgery, and damages to nerves in the true surgery are avoided. In the simulation teaching, surgical instruments are needed, but above all model ''patients'' are needed. An anatomic plane and a repeatedly-operated simulation surgery model are taken as the teaching bases of surgeries, so that the students grasp anatomic positions and surgical separation skills. A surgical planar model disclosed by the invention promotes further development of surgery simulation teaching all over the world.

The invention relates to the visual gap level plane module oil field exploration using man made authentic acidite micro module, choosing air penetration rate bigger than 0.2-0.3 mum natural or artificial acidite core, using fluid abietyl to fill the acidite core, sticking epoxide resin on the clean flat glass, grinding the core into the particle with diameter one third of the acidite granite, using the other of the same size to the core, connecting fluid injection and extraction at both ends of the core. The made module can vividly express the penetration rate of the oil reserve rock, suitable for oil and water alternating substitution, representing the actual flow of fluids of the underground fluids, with visuality for dynamic saturation quantitative analysis.

The present invention discloses an inside-road parking tracking method based on a video. The method comprises the steps of: the step S11, performing calibration of parking numbers of parking stalls, and establishing a world coordinate system planar model; the step S12, performing real-time detection of a vehicle model of the collected video images; the S13, determining whether the video images have vehicles or not, if yes, executing a step S14, or else, executing the step S12; the step S14, determining coordinate positions of the vehicles in the world coordinate system; the step S15, performing dynamic snapshot while performing tracking of the vehicles in the video images; the step S16, determining movement tracks of the vehicles, and determining the parking states of the vehicles; and thestep S17, determining and outputting vehicle information and parking information of the vehicles. According to the technical scheme, the inside-road parking tracking method based on the video can perform accurate monitoring of parking conditions of a plurality of parking stalls in a road without linkage links so as to reduce the vehicle information omission in the video image, improve the parkingstall management efficiency and reduce the human and maintenance cost.

A method for determining similarity between a non-planar probe surface and a non-planar model surface is disclosed. The method comprises calculating an extremal value of an objective function describing embedding of the probe surface into an embedding space having a non-constant sectional curvature; and determining similarity between the probe surface and the model surface based on the extremal value.

The invention discloses a path planning method based on a mobile robot. The method comprises the steps that based on a polygonal barrier planar model, Q-IGA is utilized to collaboratively search for the most appropriate control point P which serves as a control point of a Bezier curve, and the control point is utilized to generate an optimal path; the difference between difference paths in a population in each iteration is calculated, a judgment criterion is added to a selection operator for optimization, and the diversity of feasible solutions in the population is guaranteed; and a fitness function considering a barrier distance, a turning angle and a robot volume is constructed with the optimization objective of a maximum fitness function value. Through the method, the situation that steps are tedious when the optimal path is obtained through direct fitting search by use of the Bezier curve in robot path planning is avoided, it is guaranteed that the path planning process is completed efficiently, consumed time is short, and path planning efficiency is higher.

The invention discloses a microscopic rock network model manufacturing method. The microscopic rock network model manufacturing method comprises the steps that a pore-throat passage is extracted, pores and throat ways in the pore throat passage are separated, pore patterns and throat way patterns are obtained, and pore masks and throat way masks are manufactured correspondingly; through the pore masks and the throat way masks, base pieces are etched to form etched base pieces; and the etched base pieces are in key fit with cover pieces to form a microscopic rock network model. According to themicroscopic rock network model manufacturing method, through pore-throat separating, image aligning and repeated photoetching, a micro-nano oil gas flowing passage which is closer to the reality of an oil reservoir is achieved in the microscopic glass model, control over the reaction time in the etching technique is accurate, the depth-width ratio, smoothness and flatness of the passage are good,pressure does not need to be provided in the key fit process, the nano passage can be better protected, key fit of the real sand rock microscopic models of the micron pores and the nano throat ways is achieved, and microscopic dynamic change, such as Haines phase step and non-wetting phase coalescence, which cannot occur on a two-dimensional planar model is taken on.

Provided is a method for correcting an unmanned aerial vehicle control matrix based on wind tunnel test data and CFD calculation. Due to the fact that flight control needs pneumatic control, the reliable control matrix is provided. The wind tunnel test data of a planar model with an unconventional pneumatic layout is extracted, the dynamic derivative of a design point is subjected to local correction, and the influence of the unconventional layout on a traditional layout empirical formula is effectively eliminated. Compared with an existing control matrix providing method, an original method refers to ab control matrix research researched through a traditional unmanned aerial vehicle engineering design method, is obtained mainly based on experience summarized through many years of conventional appearance pneumatic layout design, has limitation to the unconventional layout and is disconnected from a wind tunnel test link. The conventional force measurement data of a wind tunnel test of the planar model is utilized creatively, the control matrix is corrected, and a more precise control matrix is provided for PID parameter control.

A multi-beam rangefinder system for estimating a range-derived value of an airborne platform relative to the ground. A planar model approximates the ground. The system includes a transmitter arrangement to produce a number of pulses of electromagnetic radiation directed in three or more non-coplanar directions and a sensor arrangement for sensing the pulses of electromagnetic radiation reflected from the ground. The systems also includes a processor arrangement for processing independent measurement of time of flight of the pulses in each of the three or more non-coplanar directions, in order to estimate the range derived value of the airborne platform relative to the ground.

The invention discloses a calibration method and device for a hand-eye relation of a polishing operation arm. The calibration method comprises the steps that collected three-dimensional point cloud data of the surface of a calibration block is acquired; preprocessing is carried out on the three-dimensional point cloud data to remove corresponding noise points; a consistency algorithm is adopted tocarry out plane segmentation on the three-dimensional point cloud data with the noise points being removed, and an estimation planar model is obtained; according to a preset convex hull algorithm, the estimation planar model is solved, and a corresponding convex polygon is obtained; and by fitting vertexes of the convex polygon, an outer parameter rotation translation matrix RW(Cam) of a camera is calculated so that a transformational relation MCam(Tool) of a three-dimensional scanning camera coordinate system relative to the robot actuator tail end in robot hand-eye calibration can be determined. The technical problems that traditional visual sensor 3D calibration is not suitable for rapid automatic identification required by a polishing system is solved.

The invention relates to a method for manufacturing a rehabilitation insole. The method comprises the following steps that foot data of a user are collected, and the foot data include foot sole pressure data collected through a pressure sensor and foot dimension data obtained by processing the foot sole pressure data; a planar model of the insole is generated according to the collected foot dimension data, three-dimensional model data of the insole are obtained through processing according to the planar model and the foot sole pressure data, and the three-dimensional model data are sent to a three-dimensional (3D) printer; and the corresponding finished insole is printed through the 3D printer according to the three-dimensional model data. The method for manufacturing the rehabilitation insole is suitable for patients suffering from foot diseases, the collected foot sole pressure data are processed and converted into thickness data of different areas of the insole, and the corresponding insole can be manufactured according to actual conditions of different users.

A method and system for vehicle anti-collision pre-warning based on a binocular stereo vision, comprising: acquiring left and right images by means of a binocular camera mounted on a vehicle body, andobtaining a disparity image based on the left and right images (S210); converting the disparity image to obtain a V-disparity image (S220); binarizing the V-disparity image (S230); fitting to obtaina segment straight line from points of the binarized V-disparity image using a RANSAC method (S240); smoothing and filtering the straight line according to multiple frames of images (S250); obtainingan accessible region in an original grayscale image by means of the extracted straight line (S260); according to the original image and the disparity image, calculating a three-dimensional coordinateof a point on the ground in a real-world coordinate system, and assuming that the ground is a planar model, fitting the plane using RANSAC so as to obtain a ground model (S270); converting the entirescene in the original grayscale image from a camera coordinate into a world coordinate while generating a plane graph, and obtaining an occupied map from the plane graph (S280); dividing the occupiedmap by means of a connected domain labeling detection algorithm to obtain the position of each obstacle, converting same into the original image for marking, and calculating the distance from the obstacle to this vehicle through the disparity image (S290); and when a current vehicle distance is less than a certain threshold value, giving an alarm or introducing a decision-making module for participation in decision-making (S2901). The method is adapted to various pavements and road conditions, has a low requirement for disparity image precision, does not rely on data, and is not affected by anartificial design.

The invention provides equipment and a method for estimating an orientation of a human body. An effective body model is constructed by using a main shaft estimated according to a depth image; and the orientation of the human body is effectively estimated according to an estimated body region. The equipment comprises an image input unit for receiving a shot human body image, a component detection unit for detecting identifiable partial components from the human body image, a main shaft estimation unit for estimating a human body main shaft in a bidimensional space from the human body image based on the detected partial components, a body region estimation unit for estimating the body region in the bidimensional space from the human body image based on the estimated human body main shaft and a human body orientation estimation unit for estimating a human body planar model corresponding to the body region in a three-dimensional space by combining the estimated body region and depth information of the body region in the depth image and estimating the orientation of the human body in the three-dimensional space based on the human body planar model.

The invention relates to an ultrasonic mobile positioning and unspecified human voice recognition combined intelligent household control system. The system comprises a wireless communication module, a separate ultrasonic sensor, a temperature sensor, a controller, an unspecified human voice recognition module and an electric appliance. The system has the following advantages: distance measurement is performed on a mobile object by use of a separate ultrasonic module, and a distance measurement formula is corrected according to real-time temperature information, such that needs in intelligent household control can be quite well satisfied; an object position can be monitored in real time and is fed back to the system, by taking the position as control information, a planar model is established, household electric appliances are actively controlled, and real-time intelligent service is provided for users; by use of an unspecified human voice recognition principle, active voice control of the users is combined with automatic indigent control of the system, and thus intelligent experience of the system is improved; and by use of the NRF24L01 wireless module, one-to-multiple accurate real-time communication is realized, and the requirement of the system for real-time performance is satisfied.

A system, method and schema for building a hierarchical model schema definition from a flat model definition are disclosed. The system, method and schema identifies a local parent element and type definition pertaining to a hierarchical loop containing the element identifier data element, a parent identifier segment if a parent exists, a segment for the hierarchical loop level code of the subject element and a child identifier segment if a child element exists. It then moves the contents of the type definition to a global group and then creates global element definitions for element references in the related hierarchical data element and, for each value in an hierarchical loop level code element, creates a local child element of complex type and adding the local child element to the hierarchical loop complex.

The invention relates to a depth filling densification system and method based on a laser radar and images. According to the depth filling densification system and method based on the laser radar andimages of the invention, a 3D laser radar and visual sensors are adopted; the laser radar acquires the three-dimensional information of an object, with the assistance of the color information of camera sensors realized, accurate road surface extraction can be realized; information replenishment and densification are performed on a three-dimensional space on the basis of texture colors provided bythe visual sensors; the normal vectors of super-pixels are estimated, so that the number of laser radar point clouds needed to establish a planar model can be reduced; and the system and method can adapt to the installation of different laser radars and different equipment. The system and method of the invention have the advantages of novel ideas, wide applicable scene range, low requirements forlaser radar equipment, low sensor requirements for sensor fusion and great novelty.

A method of processing a digital image of a scene to locate a planar surface in the digital image, includes providing a range information including two or more range values indicating the distance of objects in the scene from a known reference frame; and using a planar model and the range information to locate one or more planar surfaces in the digital image.

The invention discloses a plane meshing method and dangerousness measuring method for a debris flow accumulation fan. For the defect that an existing dangerousness degree partition and quantitative evaluation method for the debris flow accumulation fan is mainly influenced by subjectivity, the plane meshing method for the debris flow accumulation fan is firstly provided. According to the plane meshing method for the debris flow accumulation fan, an accumulation fan planar model is built on the basis of data surveying, and the terrain of the debris flow accumulation fan is divided into mesh units. Based on the method, the dangerousness measuring method for the debris flow accumulation fan is further provided. According to the dangerousness measuring method for the debris flow accumulation fan, the dangerousness degree P (xi) of each mesh unit is measured and calculated, and the dangerousness of the debris flow accumulation fan is determined according to the distribution characteristic of the dangerousness degrees P (xi) of the mesh units on the terrain of the debris flow accumulation fan. According to the plane meshing method and the dangerousness measuring method for the debris flow accumulation fan, data are acquired through surveying, mapping and other means, and an evaluation result is not influenced by subjective factors; the measuring method decomposes the dangerousness degree of the accumulation fan into a component P (u) and a component P (h), the dangerousness of burying and the dangerousness of impact can be measured respectively, and debris flow prevention engineering practice is guided better.

The invention is a method of rapidly building a human-face video plane model, avoiding building a corresponding human-face model to the human-face video, only requiring the user to provide a little special information, thus able to directly regulate a plane reference human-face model to approximate the corresponding human-face model, and then pasting the human-face video on the regulated plane reference human-face model, where the plane reference human-face model is a plane model defined in advance. Therefore, as soon as the user gives a little special information, the human-face video can be pasted on the plane reference human-face model approximate to the corresponding human-face model.

The invention discloses a water-saving irrigation internet of things integrated system for crop cultivation. The system comprises a WSN (Wireless Sensor Networks) ad-hoc network for crop greenhouse cultivation and a node deployment module; the ad-hoc network comprises an ad-hoc network formed by WSN nodes and a WSN base station; the WSN nodes include sensor nodes, control nodes, a gateway and a relay node; a virtual force algorithm based on a variable step is adopted by the node deployment module to deploy the sensor nodes in a node static sensing range; and the virtual force algorithm based on the variable step changes a movement step of each of the sensor nodes based on a sigmoid function by establishing a two-dimensional planar model of a cultivation area and a sensing model of each ofthe nodes. According to a water-saving irrigation WSN node deployment algorithm for the crop cultivation provided by the invention, while the later convergent stability is guaranteed, the purpose of optimal effect for covering an equal number of nodes in a relatively short time can also be achieved; and thus, the time for obtaining a deployment strategy is shortened, the monitoring coverage rate is improved, and the comprehensiveness and the integrity of data monitoring are guaranteed.

The invention discloses a method for processing airfoil surface load, which comprises the steps as follows: step 1: applying pressure on an airfoil surface to be measured; step 2: forming a pressure distribution three-dimensional model of the airfoil surface to be measured so as to obtain functional relationship in the pressure distribution three-dimensional model; step 3: forming a finite element planar model of the airfoil surface to be measured; step 4: mapping the finite element planar model of the airfoil surface to be measured by using the functional relationship in the step 1 as a mapping function so as to form a finite element load distribution model of the airfoil surface to be measured. Compared with prior art, the method for processing airfoil surface load of the invention considers the comparison between total load and total moment before and after load processing, and considers the comparison between a pressure distribution pattern and a finite element node load distribution pattern so that a designer could obviously judge the rationality of aerodynamic load process.

The invention belongs to the technical field of image processing, in particular to a slabstone typesetting method and device, terminal equipment and a readable storage medium. The method comprises the following steps that: after the planar model and the target daughter board of a slabstone to be typeset are obtained, firstly, determining a current typesetting band, then, dividing each daughter board to be processed in sequence from the current typesetting band according to a preset typesetting sequence, determining a new current typesetting band to continuously carry out typesetting after typesetting is full, and finishing typesetting until the whole planar model is subjected to fully typesetting. A whole process can realize automatic typesetting without manual intervention, and typesetting efficiency is greatly improved.

The invention discloses a commingling production physical simulation system and method of a permeability oil reservoir. The system comprises an injection device, a plurality of planar models and a measurement device, wherein the injection device is connected with each planar model, each planar model is connected with the measurement device, and the injection device is used for injecting a displacement fluid into the planar models; the planar models are formed by packaging natural low-permeability sandstone flat plates with different permeability and used for simulating different small layers of the multi-layer oil reservoir; a pressure measurement point is arranged on the front surface of each planar model and used for measuring the pressure field of a pressure measurement point of each planar model, and an electrode measurement point is arranged on the back surface of each planar model and used for measuring the flow field and the saturation field of each planar model; and the measurement device is used for collecting the pressure field, the flow field and the saturation field of each planar model.

The invention discloses a BIM-based three-dimensional-building-model processing method and device. A three-dimensional building model generated on the basis of BIM is acquired; the three-dimensional building model is transformed into a two-dimensional planar model, and a region mesh layer corresponding to each component is generated; the region mesh layer is acquired, and a method of geometric surrounding is adopted to split the two-dimensional planar model into a two-dimensional model corresponding to each single component; and carrying out size labeling on the two-dimensional model corresponding to each single component according to a preset labeling rule to generate a component two-dimensional-model file with labeling information. Therefore, according to the BIM-based three-dimensional-building-model processing method and device provided by the invention, two-dimensional transformation and splitting are carried out on the three-dimensional building model on the basis of a BIM platform, a two-dimensional graph of each single component after splitting can be automatically generated by a three-dimensional graph of all the components, size labeling can be automatically carried out for the two-dimensional graph to facilitate use of subsequent production and machining links on the component, and efficiency of BIM fabricated-building technology is improved.

The present invention discloses a method and system for applying 3D switch panel in instant messaging tool, the method includes the following steps: creating a window, and creating a plane model according to the window; receiving a command for triggering rotation; and rotating the plane model to drive the interface window of the instant messaging tool to rotate. The adoption of the method and the system provided in the present invention can use the 3D to switch panels of the instant messaging tool, which can satisfy users' individual demands and improves the usability of the instant messaging tool.

The invention provides an experimental apparatus and method for stoping slant medium-thick and thick ore bodies with the caving method, and belongs to the technical field of caving-method simulation experiments. The device comprises an experiment frame and a box, wherein the box is installed on the experiment frame; the experiment frame comprises an experiment frame body, a frame-body thickness expansion plate and an ore simulation inlet way; the box comprises a face plate and a side plate, and the ore simulation inlet way is installed in the box and extends to ore outlets in the surface of the box. In the improved technical scheme, an achieving device of a planar model and a stereoscopic model is arranged, and an experimental method is achieved through the achieving device. According to the experimental apparatus and method, analogue simulation of the mining process of the slant and steeply-slant (medium-thick) ore bodies can be achieved, and a technical support is provided for efficiently and economically exploiting mineral resources of mines with similar ore body existence conditions.

The present invention is suitable for the technical field of measurement, and provides a linear encoding spatial position measurement method. The method comprises the following steps of: measurement of a first position: locating a centripetal mechanism at a measured point, and performing measurement at the first position by employing at least one measurement frame; measurement of a second position: performing measurement at the second position by employing the at least one measurement frame; establishment of a planar model; establishment of a space model; and calculation of the spatial position of the measured point. The centripetal mechanism is located at the measured point, the at least one measurement frame is employed to perform measurement of the two positions, the planar model and the stereoscopic space model of the centripetal mechanism and the at least one measurement frame at two positions are established, the spatial position of the measured point is calculated through mathematical transformation, and therefore, the usage is convenient, it is not needed that the at least one measurement frame at the two positions are parallel, the precision demand of the measurement device is low to facilitate storage of the measurement device, and the spatial position of the measured point can be accurately measured.

The present disclosure introduces apparatus and methods for identifying discrepancies of oilfield wellsite equipment relative to computer-generated models. A captured image of a component of a physical object is obtained. A planar model image of the component is obtained employing a preexisting, three-dimensional (3-D), computer-generated model. A difference between the captured image and the planar model image is identified with respect to a point of interest of the component. A discrepancy report is produced for the difference.

The invention provides a method and device for calculating equivalent optical parameters of a film layer etching region, which belongs to the technical field of etching region design, and can at leastpartially solve the problem that the existing method for obtaining the equivalent optical parameters of the etching region is high in difficulty or can only be used for a regular region. The method for calculating the film layer etching area equivalent force optical parameters comprises the steps of selecting at least one part of a film layer etching area as an analysis area; establishing a planemodel corresponding to the analysis area; carrying out grid division on the plane model at a first density; analyzing first simulation stress of the plane model under the simulation boundary condition through a finite element method according to the actual mechanical parameters of the film material and the grid division of the first density; calculating an isokinetic parameter, wherein the isokinetic parameter enables the anisotropic planar blind plate of the same size as the planar model boundary to reach a first simulated stress under simulated boundary conditions.

The invention discloses an automatic design method for a railway line safety protection zone. The method includes the steps of constructing a railway line planar model (S1), constructing a safety protection zone design engineering custom dictionary (S2), constructing a slope line model (S3), setting safety protection zone design parameters (S4), automatically calculating safety protection zone node data (S5), constructing a safety protection zone model (S6), drawing a safety protection zone (S7), generating a railway line safety protection zone planar graph (S8), and outputting a safety protection zone stakage outcome table (S9). According to the method, automatic design is conducted by constructing the models, the technology is advanced, the design process is simplified, an existing working means is innovated, the speed of designing the railway line safety protection zone can be significantly increased, and the design cycle can be shortened; the method is high in automation degree, high in practicability and capable of substantially improving working efficiency and has obvious application and popularization value.

The invention relates to a three-dimensional guiding line selection method for a road in a permafrost region and aims to solve the problem that for the complicated geographical and geological environment of the permafrost region, multi-aspect requirements cannot be met due to the fact that early evolution of an existing genetic algorithm is prone to prematurity and late evolution speed is low. The method comprises steps as follows: geological disaster feature attributes of the permafrost region are screened on a GIS (geographic information system) platform, and a risk factor model is established; the geological disaster attribute information is converged, an Oracle database is connected through ArcSDE, and a geographical information database is established; a road route plane model is established, line optimization is performed with an improved genetic algorithm, and a final guiding line design scheme for the road in the permafrost region is obtained through repeated iterative optimization with the total risk factor not higher than 4.00 as a constraint condition. With the adoption of the method, the problem about the road guiding line selection in the complicated geographical environment of the permafrost region is solved, the design workload of a designer is reduced through comprehensive risk factor evaluation, and meanwhile, the design quality is improved.