456results about How to "Solve matching problems" patented technology

The invention discloses an inter-city road network index and a matching method. The invention belongs to the field of intelligent transportation. The method comprises the steps that: an inter-city road network is partitioned; a large-grid index of the partitioned inter-city road network is established, such that road section sets contained in the large-grids of the regions after partitioning can be acquired; GPS information is received from a GPS receiving system; the grid in which the GPS information exists is positioned, and a candidate matching set of road sections is acquired; an exclusion positioning method is operated in the grid; and the candidate matching set obtained after exclusion is subjected to map matching with the GPS information, such that a matching road section is found. According to the invention, the inter-city road network is partitioned, the large-grid index is established, and an algorithm is operated in the large-grid, such that inter-city road network index and matching problems are solved with high efficiency.

The invention relates to a method and device for matching users in a game application. The method comprises the following steps that the historical primary attribute values of the users are acquired according to the historical game data of the users; the evaluating coefficients of current game running environment parameters of the users are acquired; processing is carried out according to the historical primary attribute values of the users and the evaluating coefficients of the current game running environment parameters, and the current primary attribute values of the users are obtained; the users with the current priamry attribute values meeting set conditions are matched as a group. According to the method and device for matching the users, the current game running environment parameters of the users are estimated, processing is carried out according to the evaluating coefficients of the environment parameters and the historical primary attribute values of the users, the current primary attribute values of the users are obtained, the users meeting the set conditions are matched, obtained matching is more accurate and reasonable, matching accuracy and matching efficiency are improved, the situation that a large number of users not meeting the set conditions are matched is avoided, and network resources are saved.

The invention discloses a comprehensive foot profile three-dimensional individualized shoe tree model generation method for adjusting global parameter and local cross section. The method is taken in the following steps: 1, a three-dimensional standard shoe tree model and a user foot profile model are read in; 2, the foot profile parameter of the read-in foot profile model in the step 1 is measured and the shoe tree model parameter is calculated according to the foot profile parameter, then the shoe tree model is deformed under the drive of the shoe tree model parameter; 3, position control points are respectively defined for the foot profile model and the shoe tree model formed in the step 2; 4, the foot profile model is aligned with the shoe tree model in accordance with a match position reference point; 5, the section of the key position of the foot profile model is defined; 6, the section got in the step 5 and deform the shoe tree model is analyzed on the basis of the section; 7, the three-dimensional shoe tree model designed well is output. Based on the thought of stepwise refinement, the invention generates the individualized shoe tree model with high matching level according to the foot profile of the user and changes the actuality of rough classification and less comfort in the traditional shoe tree generation method.

The invention provides a navigation positioning correction method and a navigation positioning correction device based on a global positioning system, and a positioning navigation system. The method comprises the following steps of: receiving a current positioning point acquired by the global positioning system; selecting a road with the highest weight factor as a matching road of the current positioning point, and determining that a parameter of the weight factor comprises an accordance degree of a current travelling direction and a direction of the road, and an approaching degree of the current positioning point and the road; and taking a projection point of the current positioning point to the matching road as a map matching point of the current positioning point. By the invention, an accurate matching point on a map is obtained by calculating the accordance degree of the current travelling direction and the direction of the road, and the approaching degree with each road, and projecting to the road with the highest matching degree. Compared with the conventional method for matching based on a distance only, the invention has higher precision and adaptability, and can solve thepositioning problem under complex situations, such as vehicle turning, multi-intersection selecting, main and auxiliary road selecting and the like.

The invention discloses a video target tracking method capable of integrating ASIFT features and particle filter, and belongs to the technical field of video information processing and mode recognition. The video target tracking method comprises the following steps: the adjacent frame difference method is utilized to obtain moving objects in a video sequence; according to the area corresponding to an acquired complete target, a tracking target model is established; ASIFT feature vectors of the target model are established; the particle filter technology is adopted to predict a candidate area target; ASIFT feature vectors of a candidate target model are established; the feature vectors of the tracking targets are matched with the feature vectors of the candidate target; the RANSAC algorithm is adopted to reject wrong matching; the target model is renewed, so as to realize target tracking. The video target tracking method provided by the invention can accurately and quickly track the targets under the condition that brightness changes and is shielded. Therefore, the multi-target tracking method in the video surveillance has relatively good real-time performance and robustness.

The invention provides a predictive method of milling machining surface form which comprises the following steps: step one, arranging cutting parameter data and acquiring a surface roughness measured value; step two, resolving a surface roughness predictive value; step three, combining the surface roughness measured value with the surface roughness predictive value to a module data group and outputting an ultimate predictive module. Compared with the prior art, the predictive method of the milling machining surface form provides a novel surface form predictive method and further resolves the problem of match between the cutting parameter and the machining surface form based on a multiple linear regression thought. The predictive method of the milling machining surface form analyzes mainly from the angle of the features of a predictive system of the milling machining surface form, establishes a multiple linear regression analysis predictive module specific to different machining experiments, and utilizes the module to predict the experiments, and can be popularized to the prediction of residual stress, surface hardness and cutting force and the like in the milling process.

The invention provides a vehicle running track reconstruction method based on multiple probability matching under sparse sampling, which is characterized in that a historical data statistics sparse sampling point tolerance distribution is used, and a search area is determined; then a candidate match object (road section or intersection) is searched in a region of search, and can be divided into various types according to the characteristics of the candidate object, if no match object is in the search area, the sampling point is not considerate, if only one object is in the search area, then the sampling point couples to the only object, if various candidate objects is in the search area, a double layer probability matching model is used for further processing; the double layer probability matching model can calculate the coupling probability of each possible track according to matching probability of the sampling point and the selection probability of the reasonable path, and the track with utmost possible probability can be selected for being taken as a reconstruction track of the sparse sampling point. The vehicle running track reconstruction method can reduce the matching error of the sparse sampling data, and can effectively increase the precision and speed of reconstructed vehicle running track in a complex road net.

The invention discloses three-directional dynamic performance test equipment for a vehicle suspension leaf spring, and the application thereof. The test equipment comprises a power source, a test bed and a software control system. The test bed comprises a base, four stand columns and a fixing plate. A steel plate spring suspension is inverted, coiled lugs at the two ends thereof are fixed on a plate spring bearer 1 and a plate spring bearer 2. The bottoms of the plate spring bearer 1 and the plate spring bearer 2 are matched with sliding rails on the base and fixed on the sliding rails through a guide rail locking device. An inverted simulated vehicle axle is fixed above the middle part of the steel plate spring suspension. The side surface of the steel plate spring suspension is horizontally provided with a longitudinal loading mechanism. The side surface of the simulated vehicle axle is horizontally provided with a transverse loading mechanism, and a vertical loading mechanism connected with the fixing plate is arranged above the simulated vehicle axle. The power source provides power, and controls the longitudinal loading mechanism, the transverse loading mechanism and the vertical loading mechanism to conduct the three-direction synchronous loading operation onto the steel plate spring suspension by adopting the static step-by-step loading method and the dynamic harmonic excitation method through the software control system.

The invention relates to a hierarchical FPGA layout and wiring method based on a multi-level method and empowerment hypergraph. A mathematical model of a logical netlist in a hierarchical FPGA layout and wiring process is constructed by using empowerment hypergraph; circuit logic units are represented as nodes in the empowerment hypergraph; wiring among the circuit units is expressed as overrides in the empowerment hypergraph. The multi-level method is adopted as a hierarchical FPGA layout and wiring method to effectively meet the higher requirements of VLSI on the operating efficiency and processing capacity. The method can gradually reduce the scale of problems and the time complexity of methods by bottom up cluster stage and also can process details of problems level by level, increasing solution accuracy of methods by means of top-down projection optimization so as to be naturally combined with hierarchical features of researched objects. By means of the hierarchical FPGA layout and wiring method based on the multi-level method and empowerment hypergraph, the time complexity of FPGA physical design can be effectively reduced and the design capability and performance of FPGA are increased.

The invention discloses a safety cut-off type remotely-controlled intelligent mass flow rate gas meter and a management system thereof, and belongs to a gas metering device. The gas meter comprises a microcomputer controller, a micro-electro-mechanical system metering unit, a valve control circuit, a gas working condition collecting and processing unit and a communication module. The micro-electro-mechanical system metering unit accesses to the microcomputer controller through a signal collection unit and a signal processing unit sequentially. The microcomputer controller is connected with a cut-off valve through the valve control circuit and is also connected with the communication module. The safety cut-off type remotely-controlled intelligent mass flow rate gas meter and the management system thereof have the advantages that a mass flow rate metering principle is adopted, and mechanical transmission components are omitted, so that metering problems caused by mechanical aging are avoided, and metering accuracy is guaranteed; a temperature correction function is achieved through mass flow rate metering, a correction device does not need to be arranged externally to compensate temperature and pressure, and the whole meter is small in size, high in metering accuracy and high in reliability.

Aiming at defects of an existing measuring technology, the invention provides a no-parking vehicle weight information collection and matching system and method. The system comprises a lane vehicle weight information monitoring module, a tyre identification module, an ultrasonic monitoring module and an information processing module. The method comprises ten steps. The no-parking vehicle weight information collection and matching system and method has the advantages that the hardware environment aiming at multiple lanes is provided, all modules are combined and configured reasonably, and the problems in the prior art that a vehicle needs to be led to an individual lane, the construction amount is large, and the traffic flow speed is low are overcome.

The embodiment of the invention relates to the technical field of face tracking, and discloses a face tracking method, device and terminal. The face tracking method comprises the following steps of: acquiring one or more human face images including faces in a first video frame image in a video frame image sequence; identifying a face image to be tracked including a face to be tracked in the face image; extracting an image region to be detected including a human face from a subsequent video frame image of the video frame image sequence; calculating a similarity between the image region to be detected and the face image to be tracked; when there is an image region to be detected whose similarity is greater than a preset threshold value, marking the image to be detected visually in a video frame image. By the above mode, the embodiment of the invention can reduce the calculation amount of face tracking, thereby improving the efficiency.

The invention discloses a humanoid robot foot plate mechanism with multiple degrees of freedom, which belongs to the technical field of robots and comprises a central fixing plate and four foot plates. Two connecting plates are respectively hinged on each of the front side and the rear side of the central fixing plate, and each connecting plate is correspondingly connected with one of the foot plates, so that the four foot plates are respectively positioned on the left front side, the right front side, the left rear side and the left rear side of the central fixing plate. A torsion spring is mounted on a rotating shaft of each hinge. When the various foot plates in the foot plate mechanism contact with an uneven ground, a certain angle is formed between each foot plate and the corresponding connecting plate according to curvature of the ground surface contacting with the foot plate due to the effect of the corresponding torsion spring, and accordingly, a spatial supporting surface with at least four contact points is formed by the foot plate and the ground; and when the foot plates leave away from the ground, initial states of the foot plats are restored under the effects of the torsion spring. The humanoid robot foot plate mechanism is simple in structure, the foot plates can adaptively fit with an optional rough ground without being driven, the problem of matching the foot plates with the uneven ground is solved, and the characteristic and a function of automatically adapting to concave and convex changing ground surfaces and shapes are realized.

The invention discloses a multi-channel T/R assembly testing device and method. The multi-channel T/R assembly testing device comprises a received-transmitted signal separation network, and is characterized in that the received-transmitted signal separation network comprises at least one combiner, each shunting end of the combiner is connected with a transmission output/reception input end of a multi-channel T/R assembly through a four-port network, and transmission input/reception output ends of the multi-channel T/R assembly are connected with a T/R assembly performance testing instrument through an instrument distribution network; combining ends of the combiners are also connected with the T/R assembly performance testing instrument through the instrument distribution network; the instrument distribution network is further connected with a signal source, and the signal source is used for providing input signals for the multi-channel T/R assembly; both the received-transmitted signal separation network and the instrument distribution network are connected with a controller; and the four-port network comprises two operating states, wherein one of the operating states is to form two vertical microwave channels, and the other operating state is to form two transverse microwave channels.

The invention relates to a structure and a method for hanging and installing a bottom suspension device of a high speed motor train unit. The bottom suspension device is hung on a crossbeam of a train body undercarriage, the crossbeam of the train body undercarriage is provided with an installation part, the bottom suspension device is correspondently provided with an installation seat, the installation part is provided with a suspension hole, the installation seat is provided with an installation hole, a suspension bolt sequentially penetrates through the suspension hole in the crossbeam of the train body undercarriage and the installation hole in the bottom suspension device from top to bottom, a gasket and a shock absorber are sequentially arranged in the installation holes in a penetrating manner, the gasket and the shock absorber are sleeved on the suspension bolt, the shock absorber is fixedly connected with the installation seat, a protection supporting plate is also sleeved on the bottom of the shock absorber, and the bottom of the protection supporting plate is fixed in a locking manner through a tightening nut. By adopting the structure and the method, under the situation that the original light-weight train body structure is not changed, the installation of the bottom suspension device can be modified, the modification cost is low, the period is short, and the structure and the method are suitable for modifying the train from a multi-point rigid connection to the resilient structure.

The invention provides a preparation method for flame-retardant and weather-resistant modified ABS resin. The modified ABS resin comprises the following materials in part by weight: 50 to 80 parts of ABS resin, 20 to 50 parts of ASA resin, 10 to 25 parts of brominated flame retardant, 2 to 5 parts of auxiliary flame retardant, 0.1 to 0.8 part of antioxidant, 0.1 to 0.5 part of lubricant, 0.1 to 0.5 part of ultraviolet light absorber, 0.1 to 0.5 part of light stabilizer and 2 to 10 parts of compatible toughening toughening agent. After all the materials are weighed in a proportion, adding the materials to a blender, evenly blending the materials, and then extruding the materials to obtain a finished product by utilizing an extruder. The modified ABS resin prepared by the method has the advantages that the mechanical property and the processing property are consistent with those of the ABS resin, and the flame-retardant and weather-resistant properties of the resin are improved.