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45 results about "Visual estimation" patented technology
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Method and apparatus for time series graph display
A novel technique for annotating a time series graph with embedded tick marks and grid lines and method for selecting and placing such tick marks and lines within such graph. This method allows for the creation of large time series graphs that allow simultaneous perception of graph trends and features as well as the visual estimation of the values of graph point(s). Graphs produced by this method do not require the excessive user effort, time, or manipulation of graphical user interface affordances that are entailed in these two perceptual tasks with graphs annotated using prior art methods. Additionally, this method allows for minimal visual clutter of the graph.
Owner:CARETRENDS +1
Evaluation method and intelligent system of operating state of sf6 high voltage circuit breaker
InactiveCN102289590AQuickly identify the running statusEfficient and reasonable operation statusSpecial data processing applicationsWeb serviceDegree of association
The invention discloses a method for estimating an operating state of an SF6 high-voltage circuit breaker and an intelligent system, belonging to the technical field of electric transmission and transformation equipment. The intelligent system comprises a WEB server, a data server, an industrial personal computer, a local discharge monitoring unit, an opening / closing coil current monitoring unit, a release current monitoring unit, an opening / closing stroke monitoring unit, an opening / closing position monitoring unit, an SF6 gas temperature and pressure monitoring unit and a sensing element. The method comprises the steps of: 1, establishing an intelligent estimation system; 2, quantifying estimation indexes; 3, determining matter elements R to be estimated; 4, determining a model classic domain; 5, determining a model node domain; 6, calculating a subjective weight; 7, calculating an objective weight; 8, determining a subjective and objective combined weight; 9, determining a degree of association of the matter elements to be estimated; 10, estimating matter elements of a subproject layer; 11, estimating matter elements of a project layer; 12, estimating matter elements of a target layer; 13, determining an operating state grade; and 14, determining a characteristic index state grade trend. The invention has the advantages of simple model, visual estimation result and strong self-improvement characteristic.
Owner:SHENYANG POLYTECHNIC UNIV
Method and a system for calibrating and/or visualizing a multi image display and for reducing ghosting artifacts
A method for identifying a blur profile of a multi image display with a first image separating mask. The method comprises displaying a calibration pattern through a second image separating mask, allowing an evaluator to provide a visual estimation indicating a blur brought about to the calibration pattern by the second image separating mask, and generating a blur profile of at least the first image separating mask according to the visual estimation. The first and second image separating masks having a substantially similar optical profile.
Owner:HUMANEYES TECH
Method and a system for calibrating and/or visualizing a multi image display and for reducing ghosting artifacts
InactiveUS20100066817A1Reduce artifactsSimilar profileTelevision system detailsMirrorsMulti-imageDisplay device
A method for identifying a blur profile of a multi image display with a first image separating mask. The method comprises displaying a calibration pattern through a second image separating mask, allowing an evaluator to provide a visual estimation indicating a blur brought about to the calibration pattern by the second image separating mask, and generating a blur profile of at least the first image separating mask according to the visual estimation. The first and second image separating masks having a substantially similar optical profile.
Owner:HUMANEYES TECH
Method and apparatus for time series graph display
A novel technique for annotating a time series graph with embedded tick marks and grid lines and method for selecting and placing such tick marks and lines within such graph. This method allows for the creation of large time series graphs that allow simultaneous perception of graph trends and features as well as the visual estimation of the values of graph point(s). Graphs produced by this method do not require the excessive user effort, time, or manipulation of graphical user interface affordances that are entailed in these two perceptual tasks with graphs annotated using prior art methods. Additionally, this method allows for minimal visual clutter of the graph.
Owner:CARETRENDS +1
X-ray diagnostic system and X-ray image shooting method
ActiveCN103284733ASimplify the shooting processImprove shooting efficiencyRadiation diagnosticsSoft x rayVisual estimation
The invention provides an X-ray diagnostic system and an X-ray image shooting method. The X-ray image shooting method comprises the steps that firstly, orientation parameters including height data of a basis point part of a certain specific part of a diagnosis object is taken as the reference to acquire orientation parameters including position height data of the to-be-detected part, and a shooting position from the X-ray image shooting device to the to-be-detected part is adjusted based on the orientation parameters. The X-ray diagnostic system comprises an X-ray image shooting unit for shooting the X-ray image on the to-be-detected part of the diagnosis object, a basis point part height measurement unit for acquiring the basis point part height data of the diagnosis object, a to-be-detected part orientation analysis unit for acquiring the orientation parameters of the to-be-detected part based on the basis point part height data, and an X-ray image shooting position shooting control unit controlling an X-ray generator and / or detector to move to the to-be-detected part. According to the X-ray diagnostic system and the X-ray image shooting method, positioning of the X-ray generator and / or detector is automatically controlled through the shooting control unit so as to replace detector positioning adjustment through artificial visual estimation, the X-ray image shooting process is simplified, and the shooting efficiency is improved.
Owner:LIANYING GUIZHOU MEDICAL TECH CO LTD
Polysaccharide polymer water plugging gel
InactiveCN105754566AWide temperature rangeCreate pollutionDrilling compositionCross-linkVisual estimation
The invention discloses polysaccharide polymer water plugging gel which is prepared from the following ingredients by mass: 2.5 to 5 percent of a main polysaccharide agent, 1 to 2 percent of a cross-linking agent, 1 to 3 percent of a cosolvent, 0 to 10 percent of a gelatinizing regulator, and the balance of water, and is prepared according to the following steps: preparing a water plugging gel system according to the proportion; sealing the water plugging gel system; putting the water plugging gel system into a 35 to 130 DEG C oven for gelatinizing; controlling the gelatinizing time to be 6 to 72 hours according to different concentrations of the ingredients and different mineralization degrees of an aqueous solution; judging the gelatinizing time according to a visual inspection coding method, that is, gelatinizing is stopped when final set strength reaches rigid gelatinizing I level, and dehydration shrinking does not happens in 90 days after the water plugging gel system is gelatinized. According to the invention, the gel system is wide in temperature application range, and can be used for not only high-temperature reservoir water plugging operation, but also low-temperature reservoir water plugging operation; the final set strength can reach visual estimation code I level; the long-time stability is excellent; the gel system is biodegradable.
Owner:SOUTHWEST PETROLEUM UNIV
Automatic extraction method of power tower in random laser point cloud data
The invention discloses an automatic extraction method of a power tower in random laser point cloud data. The method includes the steps of : (1) an airborne light detection and ranging system is used to take an aerial photo of power line inspection; laser point cloud data of the power line inspection are obtained; the obtained laser point cloud data are meshed; an elevation value image of the power line inspection is generated; the power line inspection comprises inspection of a power tower, a power line and a potentially dangerous object; (2) the elevation value image is binarized; (3) the elevation value image is corroded; (4) the elevation value image is expanded; (5) the elevation value image is then scanned, and all dark spots are processed by a K-means clustering to get clustering of different ground objects, wherein the ground objects include potentially dangerous / non-dangerous ground objects, and the value of K is obtained by visual estimation of a quantity of the power tower and the ground objects and is inputted manually; and (6) the clustering result obtained in step (5) performs statistics of a quantity of image points. If the quantity of the image points is greater than a threshold value, the corresponding image is considered as the power tower; otherwise, the corresponding image is considered as the potentially dangerous object; and accordingly the automatic extraction of the power tower is realized.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
Offset printing output ink quantity reset method
The invention relates to an offset printing output ink quantity reset method. The present preset method is carried out by depending on experience and visual estimation, so tremendous waste is caused. The method of the invention firstly partitions digital images, computes the image-text area coverage rate of each partition area, and determines the set value of the rotating angle of an ink fountain roller according to the image-text area coverage rate value of the partition area which has the largest image-text area coverage rate in the digital images; then the method presets the printing ink of an inking system, simulates the printing ink delivery under the condition that a distributing roller does not move or moves, builds an equation set, compares the difference between the average ink thickness of each partition area of a simulated printed sheet and the standard ink thickness required by the practical printing, adjusts the given ink fountain roller to output the ink quantity, and after feedback adjustment and sequential approximation, the output ink quantity of the ink fountain roller after the last adjustment is converted into the ink key setting value. The method of the invention controls the whole output ink quantity through changing the rotating angle of the ink fountain roller, and controls the output ink quantity of each ink area through separately controlling the ink key of each ink area.
Owner:SERVICE CENT OF COMMLIZATION OF RES FINDINGS HAIAN COUNTY
Quantification method and system for composition of macerals in rocks
InactiveCN110426350AAvoid errorsImprove practicalityColor/spectral properties measurementsImaging processingVisual estimation
The invention provides a quantification method and system for composition of macerals in rocks, and relates to the technical field of energy exploration. The system comprises an optical microscope, animage acquisition device and an image processing device, wherein the image acquisition device is configured to acquire a plurality of pieces of image information of an optical plate under the opticalmicroscope, and the optical plate is from the rocks; and the image processing device is configured to determine the proportional value of the macerals in the total volume of the rocks according to the image information. The quantification method and system for composition of the macerals in the rocks realize the quantification process for composition of the macerals of organic petrology, enhancepracticality and solve the problem of errors existing in visual estimation methods and pixel counting methods in the prior art.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Road adhesion coefficient interactive estimation method based on vision and dynamics
InactiveCN111688706AImprove estimation accuracyFast convergenceExternal condition input parametersKinetic informationEstimation methods
The invention relates to a road adhesion coefficient interactive estimation method based on vision and dynamics. The method comprises the following steps of: S1, acquiring a road image in front of a vehicle in a driving process; S2, inputting the road image into a trained road classification model to obtain a front road type; S3, according to the front road type and the mapping relationship between the road type and a road adhesion coefficient, acquiring a road adhesion coefficient visual estimation value theta yimage; S4, acquiring dynamic information of tires in the vehicle driving process;S5, acquiring a current road peak adhesion coefficient estimation value theta y by utilizing a road adhesion coefficient-tire aligning torque estimator; and S6, combining the road adhesion coefficientvisual estimation value theta ximage and the current road peak adhesion coefficient estimation value theta y, and acquiring a final road adhesion coefficient estimation value by utilizing a fuzzy reasoning rule. Compared with the prior art, the method has the advantages of high estimation precision, good real-time performance, strong robustness and the like.
Owner:TONGJI UNIV
Fast evaluation method for collection exhibition materials based on image processing
InactiveCN101477025AGood effectRapid assessmentImage analysisWeather/light/corrosion resistancePattern recognitionImaging processing
The invention relates to a method for quickly evaluating an exhibition material based on image processing, which comprises the following steps: firstly adopting a nano film test piece method to test the material, next using a designed image acquisition device to acquire images of the test piece, finally applying an image processing method to divide the acquired images of the test piece, and using the obtained division result to calculate the corroded area ratio of the test piece so as to grade the material, wherein the result is basically consistent with manual visual estimation and does not rely on human subjectivity. The method adopts the technology of material science, image processing, preservation of cultural relics and the like, effectively applies the image processing in the field of the preservation of cultural relics, and acquires better effect than other methods.
Owner:XI AN JIAOTONG UNIV
Anchor chain length indicating device
InactiveCN106802122AAvoid the problem of inaccurate lengthWaterborne vesselsMechanical length measurementsGear wheelReduction drive
The present invention discloses an anchor chain length indicating device, and belongs to the ship machinery technology field. The device comprises a first gear, a second gears, a decelerator, a pointer and a dial which are coaxially arranged on the rotation shaft of a cable lifter. The second gear is arranged on the input shaft of the decelerator, the second gear is engaged with the first gear, and the pointer is vertically connected with the output shaft of the decelerator. The scales showing the length of the anchor chain are distributed on the dial, and the scales are arranged all around the output shaft of the decelerator so as to obtain the length of the released anchor chain through the scales indicated by the pointer when the cable lifter rotates and avoid the problem that the length of the released anchor chain is not accurate through visual estimation.
Owner:WUHAN MARINE MACHINERY PLANT
Garden insecticide spraying device and working mode thereof
InactiveCN112075406AHigh precisionAvoidance of injuryTransportation and packagingRotary stirring mixersAgricultural scienceAgricultural engineering
The invention discloses a garden insecticide spraying device and a working mode thereof, and relates to the technical field of spraying equipment. The garden insecticide spraying device comprises a bottom plate, a pushing handle is fixedly connected to the upper surface of the bottom plate, a plurality of universal wheels are installed on the lower surface of the bottom plate, a pesticide box is connected to the upper surface of the bottom plate, and a first observation window is installed on the front end face of the pesticide box; and a mixing mechanism is installed on the upper surface of the pesticide box, a water inlet pipe fixedly communicates with the upper surface of the pesticide box, a pesticide dispensing hopper fixedly communicates with the upper surface of the pesticide box through a pesticide conveying pipe, matched control valves are installed on the water inlet pipe and the pesticide conveying pipe, a second observation window is installed on the front end face of the pesticide dispensing hopper, and scale marks are arranged on the first observation window and the second observation window. A lifting mechanism is fixedly connected to the upper surface of the bottomplate, and a water pump is mounted on the lifting mechanism. According to the garden insecticide spraying device, it is avoided that pesticide mixing is conducted through manual visual estimation, thepesticide mixing accuracy is improved, and therefore the pesticide effect is improved, and the situation of pesticide damage is avoided.
Owner:马鞍山万森园林绿化工程有限公司
Speed test system and test method
PendingCN109270289AAvoid defectsGood recognition characteristicsDevices using time traversedElectromagnetic wave reradiationComputer hardwareDirect test
The invention belongs to the technical field of speed test and relates to a speed test system and test method. The system comprises a marking module for marking a target object, an acquisition modulefor acquiring the image of the target object and recording the acquisition time of the image, a speed module for calculating the speed of the target object during the movement of the target object, and an output module for outputting a result; the marking module includes a fixing member for connecting the target object, a light emitting tube arranged on the fixing member, and a driving circuit fordriving the light emitting tube to emit light; and the acquisition module is provided with a band pass filter. According to the speed test system and test method of the invention, a non-contact direct test speed method is adopted, so that the defects of visual estimation or test methods such as tape measures and stopwatches can be eliminated; required speed information can be calculated automatically after the image information of the target object is obtained; and therefore, the accuracy of test can be effectively improved, and a test process is efficient and convenient.
Owner:广东省特种设备检测研究院东莞检测院
Stretching positioning device with photoelectric control
The invention discloses a photoelectric controlling spreading location device, which is characterized by the following: the axial sliding disk is set on the roll axis of two positive roll external sides separately; the roll axis is composed of bearing and bearing seat on the frame; several axial spreading stripes are assembled around the positive roll periphery, which is matched by guiding dovetail groove; the outboard of spreading stripe is set on the two ends of positive roll disk periphery at sequent gap with a radial rod on the disk outside diameter face; two ends of rod assembles vertical guide screw, which is connected by screw nut; the speed reducer and motor are matched in the outboard of guide screw; the photoelectric probe is set in one side of positive roll, which connects the motor controlling switch device. The invention overcomes the defect of inaccurate locating effect due to artificial visual estimation edge-to-edge and complex operation, which is fit for kinds of cloth to proceed spreading and finishing utility before printing.
Owner:邢汝玲
Wheat lodging region identification method based on spectral texture features and support vector machine
PendingCN113516177AStatistical number of pixelsFind the areaImage enhancementImage analysisOriginal dataPrincipal component analysis
The invention relates to a wheat lodging area identification method based on spectral texture features and a support vector machine, and the method comprises the steps: assembling a multispectral sensor on an unmanned plane platform, and monitoring a farmland; superposing the single-channel remote sensing images of several wavebands based on the geographic coordinate information of each pixel according to the unmanned aerial vehicle image to generate a plurality of multispectral remote sensing images containing a plurality of channels; through a visual estimation mode, according to lodging and non-lodging types, generating an image with only a lodging area or a non-lodging area in a view field as an original data set; based on a principal component analysis method, calculating texture features of the first two principal components of all the images in the original data set and spectral reflectivity of each pixel in each wave band; constructing a support vector ting machine model and training, presetting the window size, and calling the support vector machine model to judge the type of each window; and counting the number of pixels of all the lodging regions, and further solving the area of the lodging regions.
Owner:CHINA AGRI UNIV
Method for identifying argillaceous rocks under polarizing microscope
InactiveCN104422662AAccurate identificationRapid identificationColor/spectral properties measurementsInterference colorHorizon
The invention provides a method for identifying argillaceous rocks under a polarizing microscope, belonging to the technical field of rock variety identification. The method comprises the following steps: positioning directionally aligned minerals in rock slices in the center of the horizon of a crossed polarizing microscope, and enabling the directions of principal axes of the directionally aligned minerals to be parallel to a longitudinal cross hair of an eyepiece; selecting an objective lens with magnification times being 5; turning a stage to the right at an angle of 45 degrees to enable the directionally aligned minerals to be in an extinction state; inserting a gypsum test plate; judging that the directionally aligned minerals x1 towards the right have purple blue interference colors; determining the percentage content of all the directionally aligned minerals x1 towards the right with purple blue interference colors in the horizon by adopting an area visual estimation method; turning the stage to the left at an angle of 90 degrees; judging that the directionally aligned minerals x2 towards the left have orange interference colors; visually estimating the percentage content of all the directionally aligned minerals x2 towards the left with orange interference colors in the horizon. The method can provide the basis for the oil finding directions for petroleum exploration and development and discovery of new oilfields, and has practical values.
Owner:PETROCHINA CO LTD
Sparse Gaussian process regression method for visual mapping
InactiveCN106650754AImprove estimation performanceCharacter and pattern recognitionEstimation methodsMaximum a posteriori estimation
The invention provides a Gaussian process regression method with feature selection performance, and solves the problems of excessively high feature input dimension and feature redundancy in a process of solving a visual mapping problem by utilizing Gaussian process regression. The method comprises the steps of firstly assuming that parameters related to feature weights in distribution parameters meet Laplace priori distribution; secondly estimating the parameters through a maximum posterior probability estimation method, so that feature-related weights have sparsity, namely, feature selection performance; and finally obtaining regression parameters by solving a sparse problem. When a new sample is subjected to visual estimation, sparse regression parameters are directly utilized for performing feature selection and an estimated target value is obtained. The method is simple and effective, and has good performance.
Owner:UNIV OF ELECTRONIC SCI & TECH OF CHINA
Welding seam deflection measuring method for tailor-welded blank spinning forming curved surface component
ActiveCN112902876AEasy to fixAccurate measurementUsing optical meansVisual estimationMechanical engineering
The invention discloses a welding seam deflection measuring method for a tailor-welded blank spinning forming curved surface component, and aims to accurately measure a tailor-welded blank thin-wall curved surface component spinning forming welding seam deflection angle, perfect experimental data, obtain important forming quality evaluation indexes, facilitate follow-up process optimization and improvement and improve spinning forming quality and forming limit. According to the measuring frame, accurate measurement of welding seam deflection of the thin-wall curved-surface component formed by spinning of the tailor-welded blank is achieved through the measuring method, operation is easy, efficiency is high, cost is low, accurate measuring result data are provided for measurement of geometric parameters related to the thin-wall curved-surface component formed by spinning of the tailor-welded blank, the problems of large error and inaccurate measurement caused by a measurement mode depending on visual estimation in the prior art are solved, and the accurate measurement of the deflection angle of the welding seam of the thin-wall curved surface component is realized.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Robot motion posture visual estimation method
PendingCN111951303ALow costEliminate accumulated errorsImage enhancementImage analysisPattern recognitionMachine vision
The invention discloses a robot motion posture visual estimation method. The method relates to the technical field of robot and machine vision, and comprises the steps of collecting continuous video images in a dynamic environment, selecting two of the collected images, detecting key points, calculating characteristic values of the key points, and detecting and storing the positions of the characteristic points; segmenting an original image, and obtaining and storing the position of a pixel region where a dynamic object is located in the image; comparing the image storing the feature point information with the image storing a segmentation result, and removing feature points distributed at the position of the pixel area where the dynamic object is located in the image storing the feature point information; and performing feature matching between the adjacent images by using the residual feature points after elimination and optimization, calculating pose motion of a robot between the adjacent images, and outputting robot motion pose estimation. The method has the advantages of being high in pose estimation accuracy, small in calculated amount and high in background environment interference resistance.
Owner:NANJING NORMAL UNIVERSITY
Systems and methods for visuo-tactile object pose estimation
Systems and methods for visuo-tactile object pose estimation are provided. In one embodiment, a method includes receiving image data about an object and receiving depth data about the object. The method also includes generating a visual estimate of the object based on the image data and the depth data. The method further includes receiving tactile data about the object. The method yet further includes generating a tactile estimate of the object based on the tactile data. The method includes estimating a pose of the object based on the visual estimate and the tactile estimate.
Owner:HONDA MOTOR CO LTD
Self-adaptive driving platform with plate body structure
The invention relates to a plate body structure self-adaptive driving platform, and the platform comprises an environment collection device which is disposed at the top of an upper side sub-plate, moves along with the central position of the upper side sub-plate, is located right above the central position of the upper side sub-plate, and is used for carrying out the image content input of an overwater office tablet computer, so as to obtain a corresponding field environment image; the primary layer mapping component is used for performing expansion processing and corrosion processing on the received field environment picture to obtain a corresponding primary layer mapping image; and the secondary layer mapping component is used for executing contrast improvement operation on the received primary layer mapping image so as to obtain a corresponding secondary layer mapping image. The plate body structure self-adaptive driving platform is intelligent in operation and effective in supporting. Due to the fact that a supporting mode without a fixed supporting component underwater can be provided, and the corresponding water office supporting strength is determined through the visual estimation data of the volume of the nearest personnel nearby, the reliability of the water office component is improved.
Owner:WUXI BEIDOUXINGTONG INFORMATION TECH
Dynamic balance weight angle positioning device suitable for nuclear power plant main pump motor
PendingCN112737223APrecise positioningMaintain computational correctnessStructural associationNuclear plantDynamic balance
The invention belongs to the nuclear power plant detection and maintenance technology, and particularly relates to a dynamic balance weight angle positioning device suitable for a main pump motor of a nuclear power plant; the device comprises a positioning instrument inner ring arranged outside a rotating shaft at the lower part of the motor, a positioning instrument outer ring arranged outside the positioning instrument inner ring, and a laser ray instrument arranged on the positioning instrument outer ring and positioned at the outer edge. Accurate and rapid positioning of the counterweight angle position is achieved, errors caused by visual estimation when the weighting angle is calibrated on site are eliminated, the weighting angle is kept consistent with a theoretical calculation result, the implementation effect of dynamic balance adjustment is guaranteed to the maximum extent, and dynamic balance adjustment succeeds at a time; and in addition, error accumulation of the actual weighted position can be avoided, and the calculation correctness of the dynamic balance influence coefficient of the subsequent main pump motor is kept, so that the vibration characteristic of the main pump motor can be correctly represented.
Owner:JIANGSU NUCLEAR POWER CORP +1
Automatic extraction of power towers from disordered laser point cloud data
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
High tide level quantitative research method for estuary design in future scene
PendingCN113806959AEasy to analyzeReduce the interference of human factorsDesign optimisation/simulationSpecial data processing applicationsObservation dataVisual estimation
The invention discloses a high tide level quantitative research method for estuary design in a future scene. The method comprises the following steps: S10, processing long series observation data of corrected estuary tide level by utilizing a Mann-Kendall method so as to judge the trend of the estuary tide level; S20, adopting a Markov Chain Monte Carlo algorithm and combining with Metropolis-Hastings sampling to construct a random model, and simulating a tide level sequence through the random model; S30, combining the historical tide level sequence and the simulated tide level sequence to obtain a new tide level sequence, and checking the new tide level sequence; and S40, calculating an initial value according to the new tide level sequence, and performing visual estimation line adaptation by utilizing a P-III type curve to finally obtain a designed high tide level. A quantitative solution is provided for predicting and researching the design high tide level in the estuary area, the calculation result is reasonable and credible, and the method has high practical value in the aspects of flood prevention and moisture prevention work and corresponding engineering design.
Owner:SHANGHAI WATER ENG DESIGN & RES INST
Visual-inertial combined navigation method
ActiveCN102768042BGuaranteed accuracyImprove the correction effectNavigation by speed/acceleration measurementsReference imageVisual estimation
The invention provides a visual-inertial combined navigation method, which comprises the following steps of: acquiring a visual image through imaging equipment, extracting feature points / blocks from the visual image, and matching with corresponding reference points / blocks of a reference image; grouping the feature points / blocks succeeding in matching, and determining a position visual estimation value and a posture visual estimation value of a navigation carrier according to each group of matched feature points / blocks; and fusing the position visual estimation value, the posture visual estimation value and a position inertial estimation value and a posture inertial estimation value which are acquired by an inertial measurement unit, and outputting a visual-inertial combined navigation result. According to the visual-inertial combined navigation method of the embodiment, errors of an inertial navigation system are corrected by using a visual navigation technology, so that the navigation precision is improved, and autonomous flight capability of the navigation carrier is realized.
Owner:TSINGHUA UNIV
A Gaze Estimation Method Based on Human Eye Features
ActiveCN105303170BImprove applicabilityCharacter and pattern recognitionEstimation methodsVisual estimation
A line of sight estimation method based on human eye features, comprising the following steps: 1) first defining the features of the human eyes; 2) after defining the features of the human eyes, using the model (2) to estimate the line of sight direction, an adaptive regression method based on features, The Euclidean distance between the estimated feature Ew and the real feature is limited by ε, and the line of sight estimation is realized by minimizing ||w||1 to determine the line of sight parameter. The invention provides a line-of-sight estimation method based on human eye characteristics, which is effectively applicable to the occasion where the head of the human body rotates and has good applicability.
Owner:ZHEJIANG UNIV OF TECH
A method for identification of fine-grained volcanic ash tuffaceous mudstone
ActiveCN104422692BAccurate identificationInvestigating moving fluids/granular solidsRock sampleGrey matter
Owner:PETROCHINA CO LTD
Method for estimating the length of a construction wire of a power transmission line
PendingCN112399152AImprove estimation efficiencyObjective estimateGHz frequency transmissionCharacter and pattern recognitionImage resolutionVisual estimation
The invention provides a method for estimating the length of a construction wire of a power transmission line. The method comprises the following steps: acquiring the position and height of each towerof the power transmission line by utilizing a high-resolution optical satellite remote sensing image; calculating the length of a wire between adjacent towers based on the position and height of eachtower and considering the sag; and calculating the length of the wire actually required for constructing the power transmission line based on the length of the wire between all the adjacent towers. An objective and visual estimation result is provided for a power transmission line engineering investor and an audit department, possible deviation caused by manual field supervision estimation is avoided, the overall estimation efficiency of the power transmission line is improved, and the result is more objective and visual; the method is favorable for improving the fine management level of power transmission line engineering, explores a new technical means for digital auditing, and improves the intelligent level of digital auditing.
Owner:CHINA ELECTRIC POWER RES INST
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