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60results about How to "Test results are obvious" patented technology
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Face recognition method based on combination of local features and global features
ActiveCN104318219AFace test results improvedTest results are obviousCharacter and pattern recognitionGrayscaleFace perception
The invention discloses a face recognition method based on the combination of local features and global features. The face recognition method comprises the steps that first, faces in an existing face database are extracted to train a training set; second, a grayscale image of an input face is extracted; third, main component features of the input face are extracted and recognized; fourth, local binary features of the input face are extracted and recognized; fifth, the main component features and the local binary features of the input face are weighted; sixth, the face matched with the input face is searched for in the existing face training set and output. The face recognition method improves the recognition rate of face recognition, combines two types of algorithms, and is wide in application prospect.
Owner:SHANGHAI JIAO TONG UNIV
Extraction method of visual saliency area based on monocular depth map
InactiveCN104574366AReduce noise interferenceTest results are obviousImage enhancementImage analysisFeature vectorVisual saliency
The invention discloses an extraction method of a visual saliency area based on a monocular depth map. The extraction method of the visual saliency area comprises the following sequential steps: dividing an original image to obtain super pixels; building a characteristic vector of each super pixel to estimate an absolute depth characteristic of absolute depth in a scene in the image; building a probability model by using a Gaussian-Markov random field model, calculating a distance relation between the super pixel characteristic vector and an adjacent super pixel characteristic vector by virtue of the probability model to obtain a relative depth characteristic on the basis of the absolute depth characteristic and obtain depth values and depth maps of the super pixels simultaneously; calculating saliency values of the super pixels; calculating a gain coefficient according to the depth values and correcting the saliency values by using the gain coefficient. The extraction method can be used for quickly and automatically identifying the saliency objects in the image without any prior knowledge, is high in universality and can also be used for accurately detecting the saliency area.
Owner:SOUTH CHINA UNIV OF TECH
Device for measuring Seebeck coefficient and method of device
InactiveCN105628732AEasy to installOvercoming shape limitationsMaterial heat developmentThermometers using electric/magnetic elementsEngineeringThermocouple
The invention discloses a device for measuring a Seebeck coefficient and a method of the device. The device comprises a main heater, an assistant heater, a first insulated thermal conductor, a second insulated thermal conductor, a first main probe, a first assistant probe, a second main probe, a second assistant probe, a first main thermocouple, a first assistant thermocouple, a second main thermocouple and a second assistant thermocouple; the first insulated thermal conductor and the second insulated thermal conductor are both used for carrying a sample to be measured; the first main probe, the first assistant probe, the second main probe and the second assistant probe are used for measuring the electric potential of the sample to be measured; the first main thermocouple, the first assistant thermocouple, the second main thermocouple and the second assistant thermocouple are used for measuring the temperature of the sample to be measured. The morphology of the measured sample can be flexible and diverse, the device can measure the material Seebeck coefficients under the different temperature conditions and is simple in structure, and due to the fact that the measurement method that an average value is resolved through multiple sets of the Seebeck coefficients which are resolved on the basis of the four probes is adopted, the measured Seebeck coefficient is high in measurement accuracy.
Owner:HUAZHONG UNIV OF SCI & TECH
Character relationship extraction method oriented to headline
ActiveCN105608070AExcellent training timeTest results are obviousNatural language data processingSpecial data processing applicationsAlgorithmClassification methods
The invention relates to a character relationship extraction method oriented to a headline. The character relationship extraction method comprises the following steps: 1) looking for a relationship designator in the headline for distinguishing the character relationships of different categories; 2) according to the position characteristics of a character and the relationship designator in the headline, establishing a sentence pattern template used for describing a sentence, utilizing training data to carry out statistics on the positive / negative example number of each template, and judging the correctness of the relationship among characters in the headline according to the ratio of positive templates and negative templates; and 3) extracting characteristics from a knowledge base of headlines and character attributes, combining with the positive / negative example number, which is obtained in the S2), of the sentence pattern template to judge whether the given character relationship is correct or not through a characteristic classification method. The character relationship extraction method lowers characteristic dimension and improves judgment efficiency while accuracy is guaranteed. The character relationship extraction method can be used for mining the character relationship in the headline so as to find central figures, hot issues and the like in the society and is convenient in mastering society dynamic conditions and monitoring public sentiments.
Owner:INST OF INFORMATION ENG CHINESE ACAD OF SCI
Pigment dispersion resin used for acrylic series cathode electrophoretic coating and pigment slurry thereof
ActiveCN103554352AGood effectTest results are obviousPaints for electrolytic applicationsPigment pastesSolventIon
The invention relates to a pigment dispersion resin used for an acrylic series cathode electrophoretic coating and a pigment slurry thereof. The dispersion resin is a quaternary ammonium salt modified acrylic resin, and is prepared by subjecting a quaternizing agent and epoxy group-containing acrylic resin to a heating reaction in a solvent. Active hydrogen and an epoxy group are in a mole ratio of 0.8-1.5:1. The quaternizing agent is the reaction product of an active hydrogen-containing tertiary amine compound and partially closed polyisocyanate, and is neutralized by an organic acid, wherein the -OH and the -NCO are in a mole ratio of 1.0-2.0:1. The epoxy group-containing acrylic resin is formed by copolymerization of an epoxy group-containing vinyl monomer and a vinyl monomer containing hydroxyl and alkyl ester. The dispersion resin, at least one pigment, a powder metal catalyst and deionized water together constitute the pigment slurry. The pigment slurry obtained by the dispersion resin provided in the invention has a good mating effect with an acrylic series cathode electrophoretic coating emulsion. The coating film is smooth, and has high gloss and small color difference.
Owner:CNOOC CHANGZHOU PAINT & COATINGS IND RES INST +2
Optical fiber connector tension and lens bonding thrust testing tool and application thereof
ActiveCN111624098AEasy to useImprove efficiencyMaterial strength using tensile/compressive forcesUsing mechanical meansEngineeringOptic lens
The invention relates to an optical fiber connector tension and lens bonding thrust testing tool and application thereof. The optical fiber connector tension and lens bonding thrust testing tool comprises a displacement table and a lifting table opposite to the displacement table. A sliding device and a pull and push dynamometer are arranged on the displacement table, the pull and push dynamometeris driven by the sliding device to generate displacement, and a fixing clamp or a thrust clamp is arranged at one end of the pull and push dynamometer; a lifting device, a winding clamp and / or a loading clamp are / is arranged on one side of the lifting table, the winding clamp and / or the loading clamp are / is arranged on the lifting device, and the winding clamp and / or the loading clamp are / is driven by the lifting device to move up and down. The testing tool can be used for measuring the tension of the optical fiber connector and the bonding thrust of the lens, can test different types of optical fiber connectors and different specifications of adhesive optical lenses by utilizing different clamps, fills the blank of special equipment for testing the tensile force of the optical fiber connector and the bonding thrust of the lens, and is simple to operate, convenient to use and accurate in test result.
Owner:潍坊华光光电子有限公司
Method for forming multi-layer coating film
InactiveCN101218313AImprove adhesionImprove corrosion resistanceElectrophoretic coatingsPaints for electrolytic applicationsRare earth metal compoundsMaterials science
Owner:NIPPON PAINT CO LTD +1
Current transformer and current detection system
InactiveCN101710148AImprove flexibilityEfficient working stateCurrent/voltage measurementUsing optical meansSurface layerGrating
The invention discloses a current transformer with a sensing head which comprises a giant magnetostrictive material and two fiber gratings, wherein the fiber gratings are respectively positioned at the upper surface and the lower surface of the giant magnetostrictive material and are intercrossed at different surface layers of the giant magnetostrictive material. The invention further discloses a current detection system; according to the embodiment of the invention, linear, efficient and stable working state of the giant magnetostrictive material and the fiber gratings is acquired by means of temperature compensation via two fiber gratings, and the test result is good.
Owner:SOUTH CHINA NORMAL UNIVERSITY
Method and device for selecting audio channel and terminal
ActiveCN105657154ATest results are obviousLow costSubstation equipmentComputer terminalSelf adaptive
Owner:DONGGUAN COOLPAD SOFTWARE TECH
Distributed storage performance test method and system in broadcast and television service scene
ActiveCN109634824AReduce performance tuning timeTest results are obviousHardware monitoringSoftware testing/debuggingTest scriptOptimal test
The invention relates to a distributed storage performance test method and system in a broadcast and television service scene, and the method comprises the following steps: setting an adaptive test model according to the broadcast and television service scene, and compiling related test data; determining the configuration of the distributed storage system in a broadcast and television service scene; establishing a test environment according to the configuration, wherein the test environment comprises a distributed storage system, a network system and a client system; creating a test script according to the test data; executing the test script, testing by adopting a test tool, and recording a test result. The system comprises a test model setting module, a distributed storage system configuration module, a test environment establishment module, a test script creation module and a test module. The method comprises the following steps: simulating a read-write operation of a user accordingto a radio and television service scene test model, generating a test file, and testing by using a test tool; unnecessary performance tuning time in the test process is reduced, and an optimal test result is directly obtained.
Owner:ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
Double-light-source color photometer with SCI/SCE test conditions compatible and implementation method
InactiveCN103557942ATest results are obviousRadiation pyrometryColor measuring devicesColor testColor measurement
The invention discloses a double-light-source color photometer with SCI / SCE test conditions compatible and an implementation method. Switch of the SCI / SCE test conditions is achieved in the mode of double-light-source active illumination, the design of the optical trap is replaced, and corresponding calibration algorithms are designed for the two test conditions. As is shown in the experimental result, the test results of the double-light-source color photometer on the SCI / SCE test conditions are obviously better than that of the prior art, and the double-light-source color photometer with the SCI / SCE test conditions compatible is more suitable for color test instruments with SCI / SCE test conditions compatible and has prominent value.
Owner:HANGZHOU CHNSPEC TECH
Double-leather-cup plugging head for pressure plugging of pipeline
The invention discloses a double-leather-cup spherical plugging head for pressure plugging of a pipeline. An outer end of a steering arm is provided with a leather cup control oil path interface and aleakage measuring ring leakage measuring interface, the steering arm is connected with a leather cup front guard plate through screws, a piston rod of a leather cup control oil cylinder is connectedwith the leather cup front guard plate through a nut, the oil cylinder control oil path is connected to the leather cup control oil path interface at the outer end of the steering arm through a hydraulic pipe joint, the leather cup control oil path interface is connected to an oil cylinder control valve outside a plugging connector through the hydraulic pipe joint and a hydraulic pipe, two plugging leather cups are placed on the leather cup front guard plate and are separated from the middle through a leakage measuring ring, the leakage measuring ring leakage measuring interface is connected to a leakage measuring control valve outside the plugging connector through the hydraulic pipe joint and the hydraulic pipe, and the leather cup rear guard plate is connected with the leather cup frontguard plate through the leather cup control oil cylinder. According to the double-leather-cup spherical plugging head, the two plugging leather cups are adopted for sealing, so that the procedures ofthe build of a grease wall or the install of an isolation bag are avoided after break the pipe without fire, and the plugging head has the advantages of being reasonable in design, simple in process,high in efficiency and high in safety performance.
Owner:BEIJING JINSHIWAN PIPELINE TECH CO LTD
Porous carbon material produced from gasified coal slag, production method and application of porous carbon material produced from gasified coal slag
InactiveCN110668422ALarge specific surface areaLess impuritiesHybrid capacitor electrodesCarbon preparation/purificationPorous carbonSlag
The invention relates to a porous carbon material produced from gasified coal slag, a production method and application of the porous carbon material produced from the gasified coal slag, and belongsto the field of high-added-value resource utilization of solid waste resources of the coal chemical industry. According to the method for producing the porous carbon material from the gasified coal slag, by means of the characteristics that a refined carbon material recovered from the gasified coal slag has well-developed pores and a large specific surface area, through acid pickling for de-ashingand carbonization, the porous carbon material with a specific surface area and pore volume larger than those of the refined carbon material is obtained. The porous carbon material is large in specific surface area, few in impurity and low in cost, and has high market competitiveness. According to application of the porous carbon material as an electrode material, electrochemical tests indicate that test results are superior to those of the electrochemical performance of commercial porous carbon used for capacitors.
Owner:陕西利人之星环保科技有限公司
Methyl alcohol future price prediction method
The invention relates to a methyl alcohol future price prediction method. The method is used for predicting the methyl alcohol future price in a future market and comprises the steps of: 1) obtaining a plurality of influence elements associated with the methyl alcohol future price and an influence factor corresponding to each influence element; 2) obtaining a Pearson coefficient of the influence factors in all influence elements and the methyl alcohol future price, and selecting two influence factors as independent variables of a methyl alcohol future price prediction model according to the Pearson coefficient; 3) taking the methyl alcohol future price as a dependent variable of the methyl alcohol future price prediction model and establishing the methyl alcohol future price prediction model through performing regression fitting on independent variable history data; and 4) predicting the methyl alcohol future price according to the methyl alcohol future price prediction model. Compared with the prior art, the methyl alcohol future price prediction method has the advantages that the data collection is convenient, the correlation is high, the prediction is precise, the prediction is simple and convenient and the like.
Owner:SHANGHAI YUANLU JIAJIA INFORMATION SCI & TECH CO LTD
Sectioned tubular measurement device and test method for shielding effectiveness of electromagnetic shielding fabric
InactiveCN102981065AAccelerate the pace of developmentGuaranteed tightnessElectromagentic field characteristicsEngineeringMagnetic shield
A sectioned tubular measurement device for shielding effectiveness of electromagnetic shielding fabric is mainly composed of a signal emitting end and a signal receiving end, both the signal emitting end and a signal receiving end are provided with supports, the signal emitting end is main formed by sequentially connecting a signal emitting tube, an emitting screw thread and a fabric stopping tube, and the signal receiving end is composed of a signal receiving tube, a receiving screw thread and a fabric clamping tube. A signal emitting antenna is arranged on the bottom face of the signal emitting tube, and a signal receiver is arranged on the bottom face of the signal receiving tube. The sectioned tubular measurement device is excellent in performance and accurate in test result, meets the required standard of a shielding effectiveness test, and provides reference for development, evaluation and detection of the electromagnetic shielding fabric. An adopted method is simple and convenient to operate and suitable for multiple repeated evaluation tests of the electromagnetic shielding fabric, can fill the blank in the field of shielding effectiveness tests of the electromagnetic shielding fabric, provides basis for evaluation, development and research of the electromagnetic shielding fabric, and fastens developing steps of the electromagnetic shielding fabric.
Owner:ZHONGYUAN ENGINEERING COLLEGE
Cable television signal anti-interference device
InactiveCN101552901AAvoid influenceTest results are obviousTelevision system detailsColor television detailsInterference resistanceRadio frequency signal
The invention discloses a cable television signal anti-interference device which is used for a cable signal transmission circuit and comprises an interference signal isolation device in serial connection with a signal transmission center conducting wire of the cable signal transmission circuit and an interference signal isolation device in serial connection with a shielding circuit of the cable signal transmission circuit; the cable television signal anti-interference device utilizes the interference signal isolation devices on the signal transmission center conducting wire and the shielding circuit of the cable signal transmission circuit to obstruct low-frequency signals and direct current signals, which isolates the low-frequency signals and the direct current signals interfering a TV in radio-frequency signals before the radio-frequency signals enter the TV, thereby effectively eliminating the influence of earth loop interference and hum interference on video signals, obtaining good testing result and customer satisfaction degree through laboratory experiments and tryout of customers and having very good market potential.
Owner:山东东升电子集团有限公司
Method for performing radiation test on large antenna based on actual paraboloidal coordinates
InactiveCN102508048AUniversalTest results are obviousAntenna radiation diagramsHeat flowPhysical optics
The invention relates to a method for performing radiation test on a large antenna based on actual paraboloidal coordinates. According to the method, an actual directional diagram of the antenna is obtained by substituting the actual paraboloidal coordinates into physical optical simulation analysis and calculation. The method comprises the following steps of: 1) performing profile test on the antenna by optical measurement to obtain a reflecting surface coordinate point; and 2) substituting the actually measured antenna profile coordinate point into physical optical calculation to obtain the actual directional diagram of the antenna finally. Or the method comprises the following steps of: 1', obtaining the reflecting surface coordinate point of the antenna profile in external heat flow on the basis of thermal deformation analysis; and 2', performing physical optical calculation by taking the reflecting surface coordinate point of the antenna profile, which is obtained in the step 1', as a reflecting surface to obtain the actual directional diagram of the antenna. The method has the advantages of quickness and convenience, high universality and flexibility.
Owner:CENT FOR SPACE SCI & APPLIED RES
Continuous physiological signal quality assessment method
PendingCN112971797AEasy to adjustAvoid Data Labeling WorkRespiratory organ evaluationSensorsPattern recognitionBandpass filtering
The invention discloses a continuous physiological signal quality evaluation method. The method comprises the following steps: segmenting an original physiological signal through windowing; preprocessing the segmented signal, wherein the preprocessing comprises signal baseline removal, band-pass filtering and median filtering; carrying out feature value extraction on the preprocessed signal; inputting extracted feature values into a pre-training model to obtain a score; and judging the score according to set threshold values L1 and L2 to obtain an evaluation result of the signal quality, wherein the pre-training model is an isolated forest model.
Owner:北京海思瑞格科技有限公司
A kind of preparation method of aluminum-magnesium-nickel-manganese spherical cobalt tetroxide
ActiveCN110534719BAvoid it happening againAvoid gatheringCell electrodesElectrical batteryCobalt(II,III) oxide
The invention belongs to the technical field of preparing precursor of battery positive electrode material, in particular to a preparation method of doped cobalt tetroxide, and provides a preparationmethod of aluminum-magnesium-nickel-manganese doped spherical cobalt tetroxide. Cobalt liquid containing doped elements is prepared, EDTA is used as a complexing agent and synthesis is performed at acertain pH and temperature. Meanwhile, the doped elements are uniformly and fully precipitated, and finally the high-density spherical cobalt hydroxide with uniform doping is obtained and the doped cobalt tetroxide is obtained through centrifugation and calcination. The aluminum-magnesium-nickel-manganese doped spherical cobalt tetroxide prepared by the method has uniform particle size, good compactness, complete precipitation and uniform distribution of doped elements and stable and controllable process.
Owner:취저우화여우코발트뉴머터리얼컴퍼니리미티드 +1
A kind of high oxygen permeability platelet storage medical PVC material and preparation method thereof
The invention discloses a medical PVC material with high oxygen permeability for platelet storage and a preparation method thereof. The material comprises the following components by weight: 100 parts of polyvinyl chloride resin, 45-60 parts of a plasticizer, 5-10 parts of a heat stabilizer, 0.1-2 parts of a lubricant, 0.1-0.5 part of a functional additive of sodium lactate. The invention has the advantages of reasonable formula, stable performance, simple process and low cost, effectively improves the oxygen permeability of platelet storage bag, prolongs the storage life of platelets, and is of great practical significance to the development of medical and health undertakings in our country and even the world.
Owner:上海新上化高分子材料有限公司
A cool and versatile elastic fabric
ActiveCN111118695BFeel cool and comfortableNo discomfortConjugated cellulose/protein artificial filamentsWet spinning methodsFiberSpinning
The invention discloses a cool and multi-functional elastic fabric. Two different cool-feeling fiber solutions are prepared by adding cool-feeling substances, and then the cool-feeling composite fiber filaments are prepared through spinning, coagulation, and drafting; The obtained cool-feeling composite fiber yarn is twisted and spun to obtain a cool multi-functional elastic fabric. The instant cooling performance test of the fabric prepared by the present invention shows that the fabric makes the human body feel cool and comfortable, without irritation and discomfort, and the cooling effect is still obvious after 50 times of washing; in the mechanical performance test, the fabric prepared by the present invention The dry and wet elongation of the fabric under optimal conditions showed good test results. In addition to the above-mentioned cool feeling and excellent elasticity, the fabric prepared by the present invention also has the effects of refreshing, anti-inflammatory, deworming, moisture absorption and perspiration. It is a new type of fabric with high industrial value and development prospects.
Owner:JIANGSU DAMAONIU NEW MATERIAL TECH CO LTD
A method of character relationship extraction for news headlines
ActiveCN105608070BJudgment result is excellentJudgment results are superior at training timeNatural language data processingSpecial data processing applicationsAlgorithmTheoretical computer science
The invention relates to a character relationship extraction method oriented to a headline. The character relationship extraction method comprises the following steps: 1) looking for a relationship designator in the headline for distinguishing the character relationships of different categories; 2) according to the position characteristics of a character and the relationship designator in the headline, establishing a sentence pattern template used for describing a sentence, utilizing training data to carry out statistics on the positive / negative example number of each template, and judging the correctness of the relationship among characters in the headline according to the ratio of positive templates and negative templates; and 3) extracting characteristics from a knowledge base of headlines and character attributes, combining with the positive / negative example number, which is obtained in the S2), of the sentence pattern template to judge whether the given character relationship is correct or not through a characteristic classification method. The character relationship extraction method lowers characteristic dimension and improves judgment efficiency while accuracy is guaranteed. The character relationship extraction method can be used for mining the character relationship in the headline so as to find central figures, hot issues and the like in the society and is convenient in mastering society dynamic conditions and monitoring public sentiments.
Owner:INST OF INFORMATION ENG CHINESE ACAD OF SCI
Continuous physiological signal quality evaluation device
PendingCN112971801AEasy to adjustAvoid Data Labeling WorkRespiratory organ evaluationSensorsPattern recognitionBandpass filtering
The invention discloses a continuous physiological signal quality evaluation device. The continuous physiological signal quality evaluation device comprises a signal segmentation unit, a signal preprocessing unit, a feature extraction unit, a signal quality evaluation unit and a classification judgment unit; the signal segmentation unit is used for receiving an original physiological signal and segmenting the original physiological signal through windowing to obtain a segmented signal; the signal preprocessing unit is used for preprocessing the segmented signal to obtain a preprocessed signal; the preprocessing comprises signal baseline removal, band-pass filtering and median filtering; the feature extraction unit is used for carrying out feature value extraction on the preprocessed signal to obtain an extracted feature value; the signal quality evaluation unit comprises a pre-training model, and the pre-training model is an isolated forest model; the signal quality evaluation unit inputs the extracted feature values into the pre-training model to obtain a score result score; and the classification judgment unit is used for judging the scoring result according to set threshold values L1 and L2 to obtain an evaluation result of the signal quality.
Owner:北京海思瑞格科技有限公司
Three-dimensional system chip test resource optimization method and system
ActiveCN109901050AAutomate processingGood test resultElectronic circuit testingForecastingOptimal testComputer science
The invention provides a three-dimensional system chip test resource optimization method and system. The method comprises steps that an STO model is built based on the Stackelberg game theory; a gamemodel is built; test strategies are initialized; the optimal test strategy is searched, the system is designed based on the method, and steps of the method are performed. The method is advantaged in that the brand new design thinking is employed, under the test constraints, the optimal test strategy is searched through the Stackelberg game theory, test resources are optimized, and the optimal testtime and the test bandwidth are obtained.
Owner:HARBIN NORMAL UNIVERSITY
Jitter test equipment for small mechanical and electrical products
PendingCN113532777AReduce the impactThe operation process is simple and convenientVibration testingControl engineeringTest equipment
The invention relates to test equipment, in particular to jitter test equipment for small mechanical and electrical products. The technical problem to be solved by the invention is to provide the jitter test equipment for the small electromechanical product which is simple and convenient in operation process, obvious in test result and small in influence on the surrounding environment. The jitter test equipment for the small mechanical and electrical products comprises a test box and the like, a mounting plate is connected to the middle between the left side wall and the right side wall in the test box, an up-down jitter mechanism is mounted on the mounting plate, an operation table is connected to a moving part of the up-down jitter mechanism, a left-right jitter mechanism is mounted on the mounting plate, and a first through hole is formed in the right side of the bottom of the test box. Through mutual cooperation of the up-down jitter mechanism and the left-right jitter mechanism, the small electromechanical product placed on the operation table is tested, and meanwhile through optimization of the fixing mechanism and the protection mechanism, the effects that the operation process is simple and convenient, the test result is obvious, and the influence on the surrounding environment is small are achieved.
Owner:武汉佳兴高能科技有限公司
Test System for DC-DC Converters
The present invention provides a test system for a DC-DC converter, comprising: a unit under test, including n parallel-connected DC-DC converters under test; wherein n is a positive integer greater than or equal to 2; the test unit, the The test unit is connected to the unit under test, and is used for following the preset power cycle curve, with T divided by n 1 The time difference in turn loads power to the measured DC-DC converter in parallel in the tested unit; wherein, the T 1 is the period of the power cycle curve, and the power cycle curve is a cycle curve that increases from 0 to maximum power and then decreases to 0.
Owner:WEICHAI POWER CO LTD
Face recognition method based on combination of local features and global features
ActiveCN104318219BFace test results improvedTest results are obviousCharacter and pattern recognitionGrayscaleFeature combination
The invention discloses a face recognition method based on the combination of local features and global features. The grayscale image of the face; the third step is to extract the principal component features of the input face and identify it; the fourth step is to extract the local binary features of the input face and identify it; the fifth step is to input the main component features of the face The component features and the local binary features of the input face are weighted; the sixth step is to find a face that matches the input face in the existing face training set and output it. The method of the invention improves the recognition rate of face recognition, and provides a method combining two algorithms at the same time, and has very wide application prospects.
Owner:SHANGHAI JIAOTONG UNIV
A device and method for simulating light-induced attenuation of solar crystalline silicon photovoltaic cells
ActiveCN105610401BProtection securityEasy to move aroundPhotovoltaic monitoringPhotovoltaic energy generationSample MeasureLight source
The invention discloses a device and a method for simulating light degradation of a solar crystal silicon photovoltaic cell piece. The device comprises a sealing box body, wherein a fan is arranged on the top of the box body, a temperature illumination controller is arranged on the outer surface of the box body, and the interior of the box body is provided with a simulative light source and a sample measuring table from top to bottom in sequence; the simulative light source comprises a xenon lamp, a light filter arranged under the xenon lamp and a metal halid lamp staggered to the xenon lamp; the sample measuring table comprises a sliding support, a sample temperature detector and a total radiation meter positioned on the sliding support; a sample radiating body consisting of an ordinary thickened glass layer, a solar crystal silicon photovoltaic cell piece sample layer and a photovoltaic high-transparent glass layer is arranged on the total radiation meter, and the photovoltaic high-transparent glass layer directly faces the simulative light source; and the sliding support is in sliding fit with fixed sliding rails arranged on the inner wall of the lower part of the box body. The device and the method can provide a stable environment as well as stable illumination, temperature and humidity, and an accurate and ideal test result is achieved.
Owner:TRINA SOLAR CO LTD
A device and method for testing the shielding effectiveness of electromagnetic shielding fabric
InactiveCN102937679BImprove shielding effectAccelerate the pace of developmentElectrical testingMeasurement instrument housingSignal generatorMagnetic shield
Owner:ZHONGYUAN ENGINEERING COLLEGE
A Method of Extracting Visual Salient Regions Based on Monocular Depth Map
InactiveCN104574366BReduce noise interferenceTest results are obviousImage enhancementImage analysisFeature vectorProbit model
The invention discloses a method for extracting a visually salient region based on a monocular depth map, which includes the following steps: segmenting the original image to obtain each superpixel; establishing a feature vector of each superpixel, that is, estimating the scene in the image The absolute depth feature of the absolute depth; use the Gauss-Markov random field model to establish a probability model, and calculate the distance relationship between the superpixel feature vector and the adjacent superpixel feature vector through the probability model, in the absolute depth feature The relative depth feature is obtained on the basis, and the depth value of the superpixel and the depth map are obtained at the same time; the salient value of the superpixel is calculated; the gain coefficient is calculated from the depth value, and the salient value is corrected by the gain coefficient. The extraction method of the present invention can quickly and accurately automatically identify salient objects in an image without any prior knowledge, has good universality, and can detect salient regions accurately.
Owner:SOUTH CHINA UNIV OF TECH
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