292results about How to "Simple thinking" patented technology

The invention discloses a method for improving a BP (back propagation) neutral network and based on a genetic algorithm. The method includes coding the BP network to determine structure of the neutral network, wherein the structure includes the number of hidden layers and the number of units of each layer; adopting real-number coding to code by taking weight and threshold as genes, wherein each neutral network corresponds to a chromosome after coding; using the genetic algorithm to perform selection optimization on the network, wherein selection optimization includes the steps of selection, crossing and variation; training the BP network to acquire a final result; decoding an optimal individual selected by the genetic algorithm to generate a new neutral network, and training the new network by applying a BP training algorithm to acquire a final result. The method combines the genetic algorithm with the BP network, thereby being capable of fully utilizing advantages of the both, the problem that initial weight and threshold of the BP network are difficult to determine can be solved, searching range can be narrowed, training speed of the BP network can be increased, and the problem of local minimum can be improved.

The invention discloses a method for generating interference-free flat-end milling cutter process path along the ridge direction of transitional surfaces. The method comprises the following steps: (1) initial machining tool path is set, a tool is processing along the ridges of transitional surfaces, a current tool contact is calculated to obtain effective curvature of the machining tool at the tool contact; (2) curvature interference analysis of transitional surface machining is carried out according to the effective curvature of the machining tool at the tool contact, tool bottom interference is analyzed, and the angle of the tool is deflected at the tool contact to obtain interference-free tool posture; (3) parameter calculation is carried out on the adjusted tool path so as to obtain step-length and cut row distance; and (4) adjacent tool path lines are calculated, including calculation of adjacent tool contacts and calculation of tool location data, and interference-free tool path is finally obtained. By the method, automatic planning of interference-free tool path can be realized; large cut row distance is obtained; cutting efficiency is high; machining surface roughness is low; surface fairness is good; and problems of low cutting efficiency, poor machining surface quality and the like by machining of a ball-end milling cutter are solved.

The invention provides a three-dimensional reconstruction method for binocular stereo vision. The method comprises the steps of performing image pair collection: obtaining images of a calibration plate and an object; performing camera calibration: performing calibration on a camera based on a Zhengyou Zhang calibration method to obtain initial internal and external parameters of the camera; performing stereo rectification: performing rectification on a distortion parameter through epipolar constraint to obtain a rectified image pair; performing image processing: obtaining a region of interest,and balancing brightness difference between left and right images, thereby searching for matching points; performing stereo matching: implementing a multi-grid intensive stereo matching algorithm toobtain a continuous smooth disparity map; and performing point cloud rebuilding and model rebuilding: obtaining a point cloud chart of the object, performing point cloud optimization, and obtaining acomplete object model through triangulation of a greedy algorithm. The smooth model with no obvious difference with the real object can be obtained; and the method can be used for three-dimensional reconstruction of multiple scenes.

This invention relates to quick integral picture elements motion estimation method for multiple kinds of block modes, firstly, searching interms of small block mode to determine larger block mode search sphere by small block mode motion vectors to search in light of the large mode till finishing the integral picture element search. This method not only secures the original rate distortion character of the coder but also reduces computations in large scale related to various block modes to increase coding speed greatly, mainly solving problems on multiblock mode motion estimation method in H264 video coder not limitted on H264 international standard, it can be used together with the present subpicture elements search method and RDO block mode decisive models.

The invention belongs to the digital image processing field and relates to a processing method for retaining a ghosting-free moving object in high-dynamic range image fusion. The objective of the invention is to remove ghosting and retain a high-exposure degree moving object in an image fusion process. The method includes the following steps that: images are converted into gray-scale images, and histogram equalization is carried out on the series of gray-scale images; with a moving object adopted as a singular point, a modeling result of a moving object-removed background image is obtained by utilizing median filtering; the background image is subtracted from the images comprising the moving object, so that images which only comprise the moving object after the background is removed can be obtained; and through morphological operations comprising erosion and dilation, precision processing is performed on the moving object images, large values are assigned for weight portions corresponding to the pixels of the moving object to be retained by using the coordinate information of the pixels of the moving object to be retained, and an obtained result is adopted as a weight map, and then, fusion is performed on the images according to the weight map. The processing method of the invention is mainly applied to digital image processing.

The invention discloses an Internet information searching and aggregate presentation method. The method comprises the following steps: 1), crawling pages on the Internet, and establishing indexes corresponding to the web pages according to the texts of the pages; 2) retrieving an aggregate content library according to an input query term, and if answer content corresponding to the query term exists, returning the answer content as a search result; if the answer content does not exist, carrying out step 3); 3), utilizing the established indexes to carry out web page retrieve according to the query term, and obtaining a candidate result set; 4) comparing the similarity of the text content of the web pages in the candidate result set so as to obtain a series of similar page groups (S1, S2, ...Sk); 5) extracting the similar content and the different content of all web pages in each similar page group Si, and combining the content to form a new page Pi: 6) returning the Si and Pi of each group as answer content and saving in the aggregate content library. A valuable information service can be directly provided for the user.

The invention discloses a method for integrating a covering method to obtain a service node in the SDN based on a greedy algorithm. The method comprises the steps that (1), the balance indexes of nodes are determined, and comprehensive ability values of the nodes in an autonomous domain are obtained according to a data fuzzy normalization method; (2), the node with the highest comprehensive ability value in the covering autonomous domain is selected through the greedy algorithm; (3), the node with the highest comprehensive ability value is determined as the service node, and adjacent nodes become sub-nodes of the service node; (4), a set, composed of the service node and the sub-nodes, in the network is removed; (5), the step (2), the step (3) and the step (4) are carried out repeatedly until no candidate network node exists in the network, wherein the determined service node is the final service node of the SDN. According to the method for integrating the covering method to select the service node, every time when the service node is selected, nodes adjacent to the service node do not need to participate in later selection, and thus the algorithm has the good performance in time complexity.

The invention provides an interactive image segmentation method for multiple foreground targets. The method comprises the following steps of: performing linear reconstruction on pixel colors in an image local window, and repeatedly modifying color reconstruction coefficients by using linear projection; repeatedly performing the linear reconstruction on pixel class label vectors in the image localwindow by using the modified color reconstruction coefficients, and estimating to acquire local reconstruction errors; accumulating the local reconstruction errors to acquire a global reconstruction error; building an interactive image segmentation model of the multiple foreground targets; and performing cluster analysis on the same class of pixels which are labeled by a user to acquire a clustering center; acquiring a group of polynomial functions by adopting regression estimation by taking the clustering center as a training sample; mapping the unlabelled pixels by using the polynomial functions to acquire an initial solution; solving the segmentation model; and determining the class attribution of the unlabelled pixels, and outputting a segmentation result. The interactive image segmentation method has a wide application prospect, and the problem that the multiple foreground targets are difficult to segment simultaneously in the prior art is solved.

The invention discloses a vehicle identification method based on Gabor feature extraction and sparse representation. The method comprises the steps: firstly, classifying vehicles, selecting a certain number of vehicles of each class as sample vehicle images, extracting the Gabor features of the sample vehicle images through a 2D-Gabor filter, constructing a feature dictionary needed for sparse representation through the Gabor features, and decreasing the number of dimensions of the constructed feature dictionary according to the principal component analysis method; then, extracting the Gabor features of vehicle images to be detected through the same 2D-Gabor filter, carrying out dimension reduction on the Gabor features, and working out the sparse coefficient of the Gabor features of the vehicle images to be detected on the constructed feature dictionary after dimension reduction according to the orthogonal matching pursuit algorithm; finally, judging the classes of the vehicles to be detected according to the residual error reconstruction method. The vehicle identification method has high accuracy and can meet the requirement for vehicle identification.

The invention belongs to the technical field of information processing, and discloses a climate information acquisition processing method and system, and a storage medium, and the method comprises thesteps: converting coarse-resolution monthly average data in an earth system mode into global climate background field grid point data through longitude and latitude conversion, grid conversion, projection conversion and adjacent point interpolation; carrying out the localized configuration through a regional climate mode WRF, and continuously combining and optimizing a physical parameterization scheme and a numerical mode resolution; integrating the WRF mode by using a forced field output by the earth system mode, and outputting a local meteorological element simulation field with the horizontal resolution of 1km. According to the method, regional weather and climate events under local complex terrain conditions are finely forecasted and predicted, and reliable simulation evaluation and prediction can be performed on the complex terrain and meteorological conditions on the underlying surface by using 1km-level high-resolution data output in a numerical mode.

The invention discloses a method for slight fracture supporting, capable of increasing a fracture stabilization period. The method comprises the steps of (1) evaluation of a microstructure of reservoir rocks, (2) a first-stage injection phase, and (3) second-stage and third-stage injection phases. During the second step, (1) an ultralow-viscosity fracture solution carrying a micro-particle-diameter supporting agent is injected to communicate and extend natural fracture systems with micro scales, a low-viscosity fracture solution carrying a small-particle-diameter supporting agent is injected to communicate and extend natural fracture systems with large scales; a middle-viscosity fracture solution carrying a middle-particle-diameter supporting agent is injected to extend fracture systems with large scales; and (4) a high-viscosity fracture solution carrying a large-particle-diameter supporting agent is injected to extend fracture systems with the maximum scale. According to the invention, through fine evaluation of the microstructure of the reservoir rocks, alternate multi-stage injection, utilization of viscous fingering effects of various liquids with different viscosities, multi-scale sand adding and other methods, the fracture systems with the different scales within a full seam length scope of a main fracture can be fully expanded, extended and supported; and a "valid reshaping volume" of fractures and "supporting efficiency" of cracks are increased.

The invention relates to a non-contact complex surface cone volume measurement system and method. The method includes the steps: firstly, providing three linear lasers to form a light sectioning plane and marking the contour of the section of a cone to be measured; secondly, providing a vertical lifter, moving the light sectioning plane relative to the cone to be measured; thirdly, providing a black and white camera for acquiring images and transmitting acquired image information to a computer for processing the image information to finally obtain the volume and a three-dimensional diagram of the cone to be measured. The measuring system and the method are simple and practicable, high in scanning speed and precision and low in requirement for the cone and environments and low in system cost.

The invention provides a motion object real time extraction method of a Vibe improvement algorithm based on combination of graph cut. The motion object real time extraction method comprises steps of performing retreatment on video orders through a Vibe background modeling algorism, dividing the pixels in the image into a foreground, a background and an unknown type and establishing an incompletion ternary diagram, obtaining an incompletion ternary diagram according to the Vibe algorithm, establishing mapping from an image to the diagram, constructing a goal energy function by combining with a membership degree of the foreground and the background and the similarity degree characteristics of the adjacent pixels, obtaining the gather of the sides and the points which can minimize the energy function through the max-flow min-cut theory and performing image division based on the min-cut, performing a post-processing based on the division result of the graph cut algorithm, marking the motion object in the original image by an outer-connected rectangle, and further detecting the motion object through the modeling match. The invention improves the robustness and accuracy of extracting the motion object.

The invention discloses a construction method of an attitude angle regulating model of a manless working face coalcutter for a thin seam, belonging to a construction method of an attitude angle regulating model of a coalcutter. The construction method is characterized in that a situation that gyrocopes are installed on the machine body, the front roller and the rear roller of the manless working face short machine body coalcutter is taken as a basic to construct the attitude angle regulating model of the manless working face coalcutter; when the coalcutter is drawn back and forth to perform automatic memory coal cutting on the manless working face, a primary coordinate system is established in the center of the coalcutter, and an interconversion principle between the primary coordinate system and a space coordinate system is combined, so as to derive the conversion between the moving coordinate system and the primary coordinate system after the attitude angle of the coalcutter is regulated; the inclined angle of the roller rocker is measured after the initial inclined angle and the attitude angle of the coalcutter are regulated through a gyroscope, so as to further construct a control model for attitude angle regulation and automatic roller height adjustment. The construction method disclosed by the invention has the advantages that operation is reasonable, and production benefit, safety and reliability are good; the control model control method improves the automation control of the coalcutter, improves the use performance, enhances the reliability and prolongs the service life of equipment.

The invention provides a comprehensive evaluating method for manless mining face exploitation geological condition of a thin seam, which belongs to a coal mine geological condition evaluation method. According to manless mining face exploitation characteristic of the thin seam, seven comprehensive evaluation factors of geological structure, coal seam thickness, coal seam stability, coal seam inclination angle, coal seam stiffness, coal seam top/base plate condition and working face lumpiness, which affect manless mining face exploitation of the thin seam. Furthermore 15 base factors are furthermore determined. Furthermore the membership function and weight of each evaluating factor are analyzed. In combination with a fuzzy comprehensive evaluation theory, a comprehensive evaluating model for manless mining face exploitation geological condition of thin seam is constructed; and a comprehensive evaluating result grade and reliability index are determined, thereby realizing comprehensive evaluation for manless mining face exploitation geological condition of the thin seam. The comprehensive evaluating method has important meaning for improving process selection of manless mining face and optimizing parameter, improving coal mining environment and improving safety condition and efficiency of the mining face.

This invention refers to a processing image positioning method and system for special-shaped glass. The operation steps of this method are: (1) collecting outline data of the special-shaped glass through a method of scanning practical outline of the special-shaped glass; (2) fitting the practical outline data of the special-shaped glass, and reproducing the practical outline of the special-shaped glass: (3) comparing the practical outline of the special-shaped glass with the theoretical outline of the special-shaped glass through matching the image, determining the practical gesture of the special-shaped glass in the processing system, and finishing the positioning. This system is: a measuring unit is connected with an execution mechanism through a computing unit which is connected with a DXF file base of the special-shaped glass; the execution mechanism is connected with a drilling implement, an edger unit and a polishing device. The automatic positioning function of the special-shaped glass can be realized through adopting the method and system provided by this invention on the current processing system and configuring (glass drilling implement, glass edger unit and a plurality of combined processing units) to the current system hardware structure based on the processing need.

The invention provides an acid injection fracturing method. The method comprises the steps that at the front liquid fissure forming stage, an alternative acid injection mode is adopted for fissure fracturing transformation, the alternative acid injection mode comprises the step that 1-5 levels of slugs are alternatively injected into fissures, and each level of slugs are composed of acid liquid and displacing liquid which are injected in sequence. According to the acid injection fracturing method, by combining with technical advantages of fracturing and acidification, through optimization of an alternative injection technology, the relation range of the acid liquid in a fissure fracturing system is enlarged to the greatest extent, and the porosity and permeability of fissure wall rock areimproved; a micro-fissure and branch fissure extension system is expanded and extended, increase of fissure complexity degree and transformation volume is promoted, and the duration time of keeping the flow diversion capacity of the fracturing system is prolonged.

The invention relates to energy saving and efficiency improving of operation of central air conditioners and aims to provide a method for optimizing operation parameters of the central air conditioners based on a neutral network and a genetic algorithm. The method for optimizing the operation parameters of the central air conditioners based on the neutral network and the genetic algorithm comprises the steps that data are obtained; the BP neutral network is modeled; and the neutral network is called by the genetic algorithm for optimizing the operation parameters of the central air conditioners, and finally, control variables are output and set as the operation parameters of the central air conditioners. According to the method for optimizing the operation parameters of the central air conditioners based on the neutral network and the genetic algorithm, under the premise of meeting the operation technological requirements of a central air conditioner system, the five operation workingparameters of the air conditioner system under the situation of the maximum comprehensive energy efficiency can be obtained through the load rate of the system and the dry-bulb temperature and the relative humidity of the environment during operation of the given air conditioner system, and the actual working condition is met, wherein the five operation working parameters include the water outlettemperature teo of chilled water, the water return temperature tei of the chilled water, the water supply and return pressure difference delta P of the chilled water, the water outlet temperature tciof cooling water and the water return temperature tco of the cooling water.

The invention discloses a software and hardware collaborative design method of algorithm acceleration. The method has six steps of: step 1: static analysis of algorithm and software; step 2: using software analysis tools to carry out dynamic actual measurement analysis of the software so as to obtain a basic data chart of software operation; step 3: making overall structure and function design of a multi-core hardware system by combination of system requirements, the algorithm analysis and the software actual measurement analysis data; step 4: using appropriate modeling tools (RML) to describe the whole system; step 5: constructing a function process abstract chart GCG (including a function call chart of operation time parameters) on the base of the step 2 and discussing the distribution of the software in the multi-core system by using the chart GCG as the subject; and step 6: carrying out the software and hardware realization of a prototype system according to a proposal obtained from the step 5 and evaluating the realization results. The method has good compatibility, is applicable to the urgent demand for the design of a multi-core system on chip (SOC) and promotes the improvement of multi-core design tools. The method has very high utility value and promising application prospect.

The invention discloses a directional sensor network coverage method in a complex three-dimensional scene environment, for improving the perception mode of directional sensor nodes in a three-dimensional landform in a wireless directional sensor network environment due to distinctions between monitoring of the three-dimensional landform by the directional sensor nodes and monitoring of a two-dimensional plane. Based on a grid division idea, the quantity of nodes needing to be disposed for a monitored three-dimensional landform area is calculated and initial disposition of the directional sensor nodes is carried out on the area; furthermore, based on an analog annealing idea, a strategy is designed for optimizing disposed coordinate positions of the sensor nodes, such that the coverage area of each node itself is increased to a certain degree and the blind area of the whole monitoring area is reduced; and based on a local optimization idea, the deviation angles of the sensor nodes are optimized so as to increase the integral coverage area of the nodes and adjacent nodes and accordingly increase the coverage rate of the whole monitoring area. By using the method brought forward by the invention, the utilization rate of the three-dimensional landform information perceived by the nodes in a directional sensor network can be improved.

The invention discloses an examination method for rationality of the variability of continuously reinforced concrete. The examination method can examine the tensile strength, elastic modulus and drying shrinkage strain linear expansion coefficient of the concrete and rationality of the variability of a friction resistance coefficient of a surface layer and a base layer and can control the number of dense cracks, so the method can control the number of thrusts and ensures that a continuously reinforced concrete pavement has no serious thrust damage in the designed life, thereby ensuring the service life and driving comfortableness of the pavement. After the method examines the tensile strength, elastic modulus and drying shrinkage strain linear expansion coefficient of the concrete and rationality of the variability of the friction resistance coefficient of the surface layer and the base layer, designing of the material composition of concrete can be optimized according to requirements of variability, so the service life of the pavement can be improved in the aspect of materials. The examination method is simple in thinking and is short in examination time and convenient to use after programmed into a computer program.