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35results about How to "Simplified implementation" patented technology

Three-dimensional face modeling method and device

The invention provides a three-dimensional face modeling method to achieve efficient three-dimensional face modeling. The method includes the steps that an original image and a standard model are obtained; the bone point information is obtained according to the standard model; a feature point is marked on the original portrait and the coordinate information of the feature point is recorded; first conversion is conducted on the original portrait; second conversion is conducted on the standard model; the surface of the standard model generated after the second conversion is conducted is unfolded according to the preset method to form a texture image; the original portrait generated after the first conversion is conducted is mapped to the texture image. The invention further provides a corresponding three-dimensional face modeling device for implementing the three-dimensional face modeling method. According to the technical scheme, the three-dimensional face modeling method and device are simple in operation mode, good in fitting effect and high in degree of reduction; meanwhile, the method and device are higher in implementation speed and higher in efficiency, the processes of implementation and calculation are simplified, the data collection process is simplified, practicability and adaptability of a system are improved, and the method and device have great advantages in situations of low requirement for the face depth information.
Owner:FUJIAN TQ DIGITAL

Anti-counterfeiting traceability method and device based on block chain and storage medium

The invention discloses an anti-counterfeiting traceability method and device based on a block chain and a storage medium, and belongs to the technical field of block chains, and the method comprisesthe steps: storing transaction data which are sent by a data provider and contain anti-counterfeiting information into the block chain; Correspondingly storing the transaction identifier generated bythe transaction data, the block information of the block where the transaction data is located and the storage position information of the transaction data in the block into a block chain; Returning the transaction identifier to the data provider, so that the data provider shares the transaction identifier with the data query party; And if a query request which is sent by the data query party andcarries the transaction identifier is received, querying the anti-counterfeiting information by using the transaction identifier, and a query result is returned to the data query party. According to the embodiment of the invention, the method does not depend on an intelligent contract, does not need the offline storage, reduces the scale and complexity of a local account book, reduces the storagerequirement, greatly improves the performance of a block chain, and simplifies the design and implementation of a block chain system.
Owner:ZHONGAN INFORMATION TECH SERVICES CO LTD

Bidirectional DC/DC converter capable of freely reversing, and control method thereof

The invention discloses a bidirectional DC/DC converter capable of freely reversing, and a control method thereof. The bidirectional DC/DC converter comprises a high-voltage filtering unit, a full-bridge push-pull high-frequency isolation transformation unit, a filtering energy storage unit, a low-voltage filtering unit and a digital control system, wherein the high-voltage filtering unit stabilizes a high-voltage DC voltage; the full-bridge push-pull high-frequency isolation transformation unit realizes high-frequency isolation bidirectional power transmission of the converter; the filtering energy storage unit reduces low-voltage output current ripples when the converter is in positive step-down operation, and serves as a step-up inductor for energy storage when the converter is in negative step-up operation; the low-voltage filtering unit filters out a high-frequency ripple current so as to reduce the low-voltage side voltage ripples; and the digital control system realizes bidirectional power transmission and free reversing operation functions of the converter. The control method comprises the steps of sampling, conditioning and filtering, analog-to-digital conversion, digital filtering, voltage control signal updating, current control signal updating, digital PWM modulation, and PWM signal power amplification. The bidirectional DC/DC converter is capable of freely reversing in two directions, and the control method is simple and reliable.
Owner:NANJING UNIV OF SCI & TECH

Model simplification method based on significant color attribute character preservation

ActiveCN105761314AColor attribute information is keptKeep Distinctive AttributesImage coding3D modellingPattern recognitionGraphics
The invention relates to a model simplification method based on significant color attribute character preservation, belonging to the computer graphics and virtual reality technical field. The method comprises the steps of: reading in original grid model data, and formalizing a grid model, including vertex geometrical position and color attribute formalization; calculating a secondary error matrix of all vertexes; calculating attribute significance on the model to obtain the attribute saliency of all vertexes; calculating geometrical attribute errors and color attribute errors of edges to be collapsed to obtain the collapse cost of the edges to be collapsed; and ordering all the edges from small to large according to the collapse cost; selecting an edge of minimal cost for collapse operation, and updating correlated information, including global characteristic importance and associated edge collapse cost; and repeating collapse operation until achieving a simplification requirement or an empty heap. The method can well simplify a grid with attributes, meanwhile effectively maintain model color significant attribute characteristics, and still preserve model color significant characteristics when a simplification rata reaches 90%.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Bidirectionally swinging mechanism for airspace engine

ActiveCN107587943ASimplified implementationSimplifies the layout of the engine pipingTurbine/propulsion fuel supply systemsSolenoid valveEngineering
The invention provides a bidirectionally swinging mechanism for an airspace engine. The A shaft and C shaft of a cross are respectively fixedly provided with a fixed support I and a fixed support II in fixed connection with a pedestal supporting frame; the B shaft and D shaft of the cross are respectively fixedly provided with a support rotation block I and a support rotation block II in fixed connection with solenoid valves of the engine; a motor I is fixedly connected with the fixed support II, and the power output terminal of the motor I is fixedly connected with a square load-bearing shaftI arranged on the outer end of the C shaft; and a motor II is fixedly connected with the support rotation block II, and the power output terminal of the motor II is fixedly connected with a square load-bearing shaft II arranged on the outer end of the D shaft. The bidirectionally swinging mechanism provided by the invention can realize swinging in two directions perpendicular to each other; through usage of internal pipelines on the cross, construction of the swinging mechanism and arrangement of engine pipelines are simplified; and the bidirectionally swinging mechanism can meet the requirement of the airspace engine for swinging movement in perpendicular directions under specific working conditions.
Owner:贵州航天朝阳科技有限责任公司

Storage head node of blade server

The invention discloses a storage head node of a blade server. The storage head node comprises a storage control unit, a magnetic disk storage unit and a hard disk backplate, the storage control unit is used for receiving and storing data information, processing the data information according to computation tasks of other storage heat nodes and performing feedback, the data information is read and written through read-write control instructions of an SAS unit and the hard disk backplate, the SAS unit converts the data information into data information of SAS signals and writes the the data information of the SAS signals in the magnetic disk storage unit, the magnetic disk storage unit writes in or reads the data information of the SAS signals which are subjected to the SAS unit according to a received writ-in control instruction or a received reading control instruction, and the hard disk backplate is used for realizing reading and writing of the data information according to a read-write control instruction from the storage control unit. Reading and writing of the data information are realized through the control instructions of the SAS unit and the storage control unit to complete the computation tasks and feed the completed computation tasks back to the corresponding storage head nodes, and unified management of storing and processing of the data information is realized.
Owner:INSPUR BEIJING ELECTRONICS INFORMATION IND

Carrier-rocket-oriented method for simplifying fluid and solid coupling simulation geometric models

ActiveCN107784181AFix fixitySolving Model Simplification StepsGeometric CADSustainable transportationCouplingGeometric modeling
The invention discloses a carrier-rocket-oriented method for simplifying fluid and solid coupling simulation geometric models. The carrier-rocket-oriented method includes steps of 1), retrieving all components in assemblies and rejecting the components in unqualified shapes; 2), selecting optional one sheet to be used as a center, retrieving surrounding sheets and combining the sheets with the selected sheet to form a closed body; 3), retrieving factors of all the components under the assemblies, selecting geometric features, selecting geometric feature faces by means of feature recognition and labeling or deleting attributes for the geometric feature faces; 4), selecting the geometric features, setting size thresholds, comparing the sizes of the selected geometric features to the size thresholds and rejecting the geometric features which do not conform to requirements; 5), judging whether geometric simplification is used for hydrodynamics profession or not; 6), computing encircling boxes of the components, solving integral shapes of the assemblies and shelling the integral assemblies to obtain geometric shapes of the integral assemblies; 7), selecting updated assemblies, and creating spatial domains so as to complete geometric simplification work oriented to fluid and solid coupling simulation. The geometric feature faces selected by means of feature recognition at the step 3)correspond to the geometric features selected at the step 3).
Owner:BEIJING INST OF ASTRONAUTICAL SYST ENG +1

Geometric figure simplification method for BIM model

PendingCN110675508ASmooth browsing and managementHigh resolution requirementsImage data processingTriacontagonEngineering
The invention discloses a geometric figure simplification method for a BIM model. The geometric figure simplification method comprises the following steps: 1, acquiring surface geometric data of a BIMmodel body; 2, judging whether a certain grid surface of the BIM model is a triangular surface or not; judging whether the grid is a triangular patch or not according to the number of vertexes of a certain grid of the BIM model; when the polygon is a triangular surface, carrying out triangular patch merging simplification on the polygon, and then carrying out boundary line simplification on the merged polygon by adopting a three-point method; 3, according to a short edge principle, moving a point deleted after simplifying the boundary line of the polygon to the other vertex of the short edgein the adjacent edges; and 4, according to the obtained material information, endowing the simplified model with corresponding material attributes according to grid division. According to the geometric figure simplification method, simplification of triangular patches and boundaries of geometric data of the BIM model can be quickly realized; and by judging the shapes after combination, the advantages of the original geometric figure characteristics of the BIM model can be reserved.
Owner:CHANGJIANG SURVEY PLANNING DESIGN & RES +1

Rotor piezoelectric damping elastic support device

ActiveCN109026168AEliminate design requirementsEliminate the need for maintenancePiezoelectric/electrostriction/magnetostriction machinesBlade accessoriesCapacitanceElectricity
The invention discloses a rotor piezoelectric damping elastic support device, and belongs to the technical field of rotor damping. The device comprises a mouse cage type elastic support part and a piezoelectric module; the piezoelectric module is fixed on the mouse cage type elastic support part; and the mouse cage type elastic support part is provided with multiple even mouse cage bars with the same geometric sizes. The piezoelectric module comprises distributive piezoelectric chips, circuit resistors and connecting circuits; and the piezoelectric chips are arranged on the outer sides of allthe mouse cage bars, and are placed on root parts connected with fastening flanges and on root parts connected with bearings. Outer side electrodes of the piezoelectric chips are connected into the circuit resistors; the circuit resistors comprise three types of a resistance type, an inductance-resistance type and a negative capacitance-resistance type; the circuit resistors and the piezoelectricchips are connected through the connecting circuits; and connecting modes comprise a branched circuit mode or a network circuit mode. The device reduces the machining demands of installation of outerrings on the bearings, simplifies the design of support structures, and provides the design margin for actual engineering design.
Owner:BEIHANG UNIV

Three-dimensional grid simplifying method and device, electronic equipment and storage medium

The invention relates to a three-dimensional grid simplifying method and device, electronic equipment and a storage medium. The method comprises the steps: acquiring a three-dimensional grid model of a target object, and converting the three-dimensional grid model into a two-dimensional grid image, wherein the three-dimensional grid model comprises a plurality of three-dimensional triangles; obtaining a two-dimensional mask image, wherein the size of the two-dimensional mask image is the same as that of the two-dimensional grid image, the two-dimensional mask image comprises a target mask area; determining a two-dimensional target area corresponding to the target mask area in the two-dimensional grid image, wherein the two-dimensional target area comprises a plurality of two-dimensional target triangles; and determining a three-dimensional target triangle corresponding to the two-dimensional target triangle in the three-dimensional grid model, and taking a three-dimensional grid formed by the three-dimensional target triangle as a simplified three-dimensional simplified grid. According to the scheme, the three-dimensional grid of the human face can be effectively simplified, and the refined beauty makeup special effect on the specific area can be achieved in various scenes.
Owner:BEIJING DAJIA INTERNET INFORMATION TECH CO LTD

Intelligent video monitoring system with fire/invasion information authenticity verification function

The invention discloses an intelligent video monitoring system and method with a fire/intrusion information authenticity verification function, and the system comprises an indoor aisle video monitoring subsystem, an outdoor panoramic video monitoring subsystem, an intelligent data transmission gateway, a wireless fire detector, a wireless intrusion detector, a power supply device, and an intelligent supervision terminal. The power supply device is used for supplying power to each subsystem; the indoor aisle video monitoring subsystem comprises a plurality of indoor serial port cameras and an intelligent image transmission gateway. The outdoor panoramic video monitoring subsystem comprises outdoor serial port cameras and an intelligent image transmission controller. And after receiving thealarm signal of the wireless fire detector or the wireless intrusion detector, the intelligent data transmission gateway firstly sends the alarm signal to the intelligent supervision terminal and thenforwards the alarm signal to the intelligent image transmission gateway, and the intelligent image transmission gateway acts according to the type of the alarm signal. According to the technical scheme, the problem of high false alarm probability generally existing in the current cultural relic building intelligent safety protection system can be solved.
Owner:厦门信通慧安科技有限公司

A projection kinematics control method for a large heavy-duty manipulator

The invention belongs to the field of large-scale heavy-duty robots, in particular to a projection kinematics control method of large-scale heavy-duty mechanical arms. It includes the following steps: establish a three-dimensional geometric model of the mechanical arm according to the actual mechanical arm; set multiple projection surfaces; perform projection mapping on the three-dimensional geometric model, and obtain the joints J1-J4 and the end point EE of the end effector on each projection surface The projection; according to the three-dimensional geometric model and the projection on each projection surface, the joint angle θ is obtained 1 , θ 2 , θ 3 , the elongation of J4 and the corresponding relationship with EE. Get the joint angle θ according to EE 1 , θ 2 , θ 3 The rotation angle is used as the input value of the joint motor, and the actual angle of the joint is used as the feedback value, and the joint rotation is controlled through closed-loop control to realize the movement of the mechanical arm. The projection kinematics control method proposed by the present invention is an analytical solution method, and compared with other numerical solution methods, iterative solution is not required, the solution efficiency is high, and the real-time requirement of the control system is guaranteed.
Owner:SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI

High-precision rolling displacement detecting device

The invention discloses a high-precision rolling displacement detecting device comprising a rolling wheel roller, a rolling bearing, a friction wheel, a coded disk and a displacement output part, wherein the rolling wheel roller is connected with the rolling bearing and the friction wheel and is supported by the roll bearing to drive the friction wheel to rotate; the front of the friction wheel is connected with a small shaft part of the rolling wheel roller through the rolling bearing; the rear of the friction wheel is connected with the coded disk and transmits the output rolling displacement to the coded disk in a form of the friction force; the coded disk and the friction wheel are connected with the displacement output part through a signal wire; and the connection among the rolling wheel roller, the rolling bearing and the friction wheel is realized by the small shaft part of the rolling wheel roller. The device has the characteristics of scientific concept, simple structure, low cost, high speed and high precision; and the rolling displacement is detected by the coded disk in a pulse manner. The high-precision rolling displacement detecting device can be applied to the fields of industries and control, such as industrial scanning and imaging equipment, high-precision driving equipment, and the like and has broad market prospect and high application value.
Owner:BEIHANG UNIV
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