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34 results about "Correspondence problem" patented technology

The correspondence problem refers to the problem of ascertaining which parts of one image correspond to which parts of another image, where differences are due to movement of the camera, the elapse of time, and/or movement of objects in the photos.

Feature tracking linear optic flow sensor

This invention is a one-dimensional elementary motion detector that measures the linear optical flow in a small subsection of the visual field. This sensor measures motion by tracking the movement of a feature across the visual field and measuring the time required to move from one location to the next. First a one-dimensional image is sampled from the visual field using a linear photoreceptor array. Feature detectors, such as edge detectors, are created with simple circuitry that performs simple computations on photoreceptor outputs. The detection of the feature's location is performed using a winner-take-all (WTA) mechanism on feature detector outputs. Motion detection is the performed by monitoring the location of the high WTA output in time to detect transitions corresponding to motion. The correspondence problem is solved by ignoring transitions to and from the end lines of the WTA output bus. Speed measurement is performed by measuring the time between WTA output transitions. This invention operates in a one-dimensional subspace of the two-dimensional visual field. The conversion of a two-dimensional image section to a one-dimensional image is performed by a specially shaped photoreceptor array which preserves image information in one direction but filters out image information in the perpendicular direction. Thus this sensor measures the projection of the 2-D optical flow vector onto the vector representing the sensor's orientation. By placing several of these sensors in different orientations and using vector arithmetic, the 2-D optical flow vector can be determined.
Owner:THE GOVERNMENT OF THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SEC OF THE NAVY NAVAL RES LAB WASHINGTON

Automatic registering method of remote-sensing image

InactiveCN103544711AImprove uniformityOvercoming the incomplete correspondence problemImage analysisRegular gridComputer science
The invention relates to an automatic registering method of a remote-sensing image. A first registering image after an image to be registered is registered and a benchmark image are divided according to a regular grid with the preset size, and divided sub-image blocks are aligned. Identical points closest to the lower right corners of the sub-image blocks serve as intersection points for grid division, and irregular rectangular grids are generated. Evenness of the identical points is improved, the registering precision of areas where the identical points are sparsely distributed is improved, and therefore the registering precision of the whole image is improved. The irregular rectangular grids are then expanded to generate first-class sub-image blocks, and registering is performed on the sub-image blocks. The first-class sub-image blocks which are registered are cut, and expanded portions of the first-class sub-image blocks generate sub-image blocks of the revised first registered image. Finally, marginal areas which are possibly deformed after registering are cut, and the sub-image blocks of the first registered image after splicing and revising are spliced, and the registered image is obtained. The problem that the sub-image blocks are in incomplete correspondence with objects due to local deformation of the image is solved, and the registering precision of the image is further improved.
Owner:SATELLITE SURVEYING & MAPPING APPL CENTSASMAC NAT ADMINISTATION OF SURVEYING MAPPING & GEOINFORMATION OF CHINANASG

Industrial data sample screening method based on complex network community discovery

An industrial data sample screening method based on complex network community discovery comprises the steps of firstly using target data structure initial samples as complicated network nodes, calculating distances among the nodes, comparing the distances with interceptive threshold values to obtain an adjacent matrix representing node connecting relation, then using modularity maximization as an optimization objective, performing community discovery in the complicated network represented by the adjacent matrix, obtaining sample community division of corresponding problems under different situations, finally network node 'combination degree' evaluation indexes are provided, descending sorting is conducted on nodes in the network according to a combination degree value, a sample re-structure sample set is selected from each community according to a combination degree value average, and accordingly reduction of data sample sets is achieved under the situation that useful information in an original sample set is retained. Screened data samples are adopted to perform soft measurement, prediction and case-based reasoning, the accuracy of an established model can be further improved, and guarantee is provided for implementation of data-based optimized dispatching in the industrial process.
Owner:DALIAN UNIV OF TECH

Jet reflection velocity field test method

The invention belongs to the field of high-temperature high-speed fluid flow researches and particularly relates to a high-temperature high-speed jet reflection velocity field test method. The method is characterized by including firstly, processing an H-shaped test rake, secondly, preparing test equipment, thirdly, starting test after synchronizing a system clock with a jet generator, fourthly, processing data, and fifthly performing analysis and computation. The method has the advantages that the number of measuring points, test data volume and test start-up times are reduced to a bearable range of an external field; the ground of the external field is undestroyed while steadiness of the test rake is guaranteed, and the problem about influence on a plastic piezometric tube due to condensation and high temperature of the external field is solved; a multi-channel acquisition delay unloading method is adopted for massive real-time high-frequency dynamic sampling data, the problem of lack of bandwidth and rate of a data acquisition and storage system is solved, meanwhile data accuracy is improved, start-up times of a jet device are reduced, and test cost is saved; the problem about one-to-one correspondence of the test data and jet states is solved; and a set of data acquisition, processing and analysis method is established.
Owner:SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA

AR display, on-line interactive knowledge and backstage big data testing system

ActiveCN108537699AQuick and easy to learnQuick and easy solutionData processing applicationsElectrical appliancesManagement unitLearning data
The invention discloses an AR display, on-line interactive knowledge and backstage big data testing system comprising a user client end and a system backstage that are connected, the user client end is used for a user to operate the system, the system backstage is used for providing support management for system data and service; the system backstage comprises a basic information management unit,a data management unit and a user management unit; the user client end comprises a user operation unit and an account management unit, AR new technologies are combined with textbooks, and a corresponding video can be obtained after a corresponding picture is scanned by a student; after the video is watched and corresponding questions are answered, statistics are run on how many questions are answered correctly at a backstage, learning data of the student can be obtained, video textbook teaching is combined with on-line interactive knowledge testing, a teaching mode of on-line and off-line interaction is formed, the student is enabled to learn and get answers to questions conveniently anytime and anywhere, teaching resources can be optimized, learning cost and learning time of the student can be reduced, and efficiency of on-line education can be improved.
Owner:北京朗杰科技有限公司

Jet-flow reflection temperature field testing method

A jet-flow reflection temperature field testing method belongs to the field of research on flow of high-temperature high-speed fluids, and is applied to high-temperature high-speed jet flow. The method is characterized by comprising the steps of 1) preparing test equipment; 2) starting test when a system clock is synchronized with a jet flow generator; 3) processing data; and 4) implementing analysis and calculation. The method has the advantages that the amount of testing points, test data bulk and the number of test vehicles are decreased to a bearable scope of outfield; the ground of the outfield is not damaged, it is ensured that test targets are stable, and influence of outfield condensation and high-temperature on plastic pressure testing pipes are avoided; massive real-time high-frequency dynamic sampling data is collected in multiple channels and stored in a time-delay manner, the problems that the bandwidth and speed of a data collection and storage system are not high enough are solved, the data precision is solved, the operation frequency of jet flowing device is reduced, and the test cost is saved; the problem that test data is in one to one correspondence with jet flow state is solved; and a set of data collecting, processing and analyzing methods is thus established.
Owner:SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA

Business problem statistics method and device, computer device and storage medium thereof

The invention provides a business problem statistics method and device based on data analysis, a computer device and a storage medium. The method comprises: a communication problem record between thebusiness personnel and the client is stored through the business problem library; generating a first question text through semantic recognition question recording; identifying a plurality of first keywords in the first question text, associating synonyms and/or anonyms of the plurality of first keywords to obtain a plurality of second keywords, and combining the plurality of second keywords to form a second question text with smooth language logic, so as to realize mining of new questions and achieve the technical effect of no rain and silk; according to the technical scheme, the first question text and the second question text are imported into the corresponding question types of the storage clips, and finally, the number proportion of the question texts of the storage clips in the statistical library is started to be analyzed according to the browsing instruction by obtaining the browsing instruction input by the business personnel, so that a question proportion table is generated, and enterprise leaders can make decisions for the business questions.
Owner:PING AN TECH (SHENZHEN) CO LTD

A scheduling method for collaborative optimization process of medical consumables inventory and replenishment

The invention discloses a scheduling method based on genetic algorithm for collaborative optimization process of medical consumables inventory and replenishment. The method comprises the following steps: 1. Initializing parameters of the algorithm; 2. Initializing individual population; 3, calculating the fitness value of individual population; 4 dividing that original population into several sub-populations according to the individual fitness value; 5, performing individual cross operation in each sub-population; 6. merging all the renewed subpopulations into one new population; 7. PerformingMutagenesis on individuals in the new population; 8 if it is judged that the algorithm satisfies the termination condition, outputting the global optimal solution searched by the algorithm; otherwise, returning to step 3. The invention can solve the problem of decision-making of collaborative optimization process of inventory and replenishment for medical consumables in hospital, The approximateoptimal solution of the corresponding problem is obtained, so that the hospital can formulate scientific and reasonable inventory and replenishment strategies, and the hospital can manage the medicalconsumables according to the formulated strategies, so as to improve the hospital's inventory management level of the medical consumables and reduce the overall operation cost of the hospital.
Owner:HEFEI UNIV OF TECH

Voice dialing user classification method based on data analysis and related equipment

The invention relates to the technical field of data analysis, in particular to a voice call user classification method based on data analysis and related equipment, and the method comprises the steps: obtaining original information of all corresponding target users after obtaining service classification demands, and generating an original information data set after summarizing the original information; performing data cleaning and summarizing on user original information in the original information data set to obtain a user information data set, and aligning and classifying user classification results; extracting a corresponding question from a preset question library according to the user classification result and the service classification demand, calling the corresponding user and obtaining a response result, analyzing the response result to generate a to-be-maintained record, and sending the to-be-maintained record to the original information source party; and updating the user information data set after receiving the updated data of the source party, and obtaining a corrected classification result accordingly. According to the method, the effects of automatically classifyingthe to-be-called users, automatically calling and automatically correcting the classification result are achieved, the manpower and time cost is saved, and the classification precision and accuracy are high.
Owner:PINGAN PUHUI ENTERPRISE MANAGEMENT CO LTD

Automatic Registration Method of Remote Sensing Image

InactiveCN103544711BImprove uniformityOvercoming the incomplete correspondence problemImage analysisRegular gridReference image
The invention relates to an automatic registration method for remote sensing images. The first registration image and the reference image after the registration of the images to be registered are divided according to a regular grid of a predetermined size, and the divided sub-image blocks are centered. The point of the same name closest to the lower right corner of the sub-image block is used as the intersection point of the grid division to generate an irregular rectangular grid, which improves the uniformity of the point of the same name, improves the registration accuracy of the area where the point of the same name is sparsely distributed, and then improves the overall image. Registration accuracy; then expand the irregular rectangular grid to generate a first-level sub-image block pair and perform registration, and cut the extended part of the registered first-level sub-image block to generate the revised first registration image The sub-image blocks, which may produce deformed edge areas after registration, are cut out, and finally the sub-image blocks of the revised first registration image are spliced ​​to obtain the registered image, which overcomes the sub-image block ground objects caused by local deformation of the image The incomplete correspondence problem further improves the image registration accuracy.
Owner:SATELLITE SURVEYING & MAPPING APPL CENTSASMAC NAT ADMINISTATION OF SURVEYING MAPPING & GEOINFORMATION OF CHINANASG
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