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287 results about "Representative point" patented technology
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Motion-vector detecting device, motion-vector detecting method, and computer program
InactiveUS20060285596A1Accurate evaluation-value tableAccurate Motion DetectionColor television with pulse code modulationImage analysisPattern recognitionRelevant information
A device and method that serve to generate an accurate evaluation-value table and to detect a correct motion vector are provided. A weight coefficient W is calculated on the basis of correlation information of a representative-point pixel and flag-correlation information based on flag data corresponding to pixel-value difference data between a subject pixel and a pixel in a neighboring region of the subject pixel. A confidence index is generated on the basis of the weight coefficient W calculated and an activity A as an index of complexity of image data, or a confidence index is generated on the basis of similarity of motion between the representative point and a pixel neighboring the representative point, and an evaluation value corresponding to the confidence index is accumulated to generate an evaluation-value table. Furthermore, correlation is checked on the basis of positions or pixel values of feature pixels neighboring the subject pixel to determine a motion vector.
Owner:SONY CORP
Method of encoding and decoding motion model parameters and video encoding and decoding method and apparatus using motion model parameters
InactiveUS20080240247A1Efficient codingImproving video compression efficiencyColor television with pulse code modulationColor television with bandwidth reductionPattern recognitionMotion vector
Provided are a method of efficiently transmitting motion model parameters using temporal correlation between video frames and a video encoding and decoding method and apparatus, in which motion estimation and motion compensation are performed by generating a plurality of reference pictures that are motion-compensated using motion model parameters. Motion model parameters are encoded based on temporal correlation between motion vectors of representative points expressing the motion model parameters, global motion compensation is performed on a previous reference video frame using motion model parameters in order to generate a plurality of transformation reference pictures, and a current video frame is encoded using the plurality of transformation reference pictures.
Owner:SAMSUNG ELECTRONICS CO LTD
Information input/output method using dot pattern
InactiveUS20050173544A1Reduce regularityImpossible to read dataInput/output for user-computer interactionRecord carriers used with machinesGraphicsInformatization
This invention, by imparting different functions to respective dots of a dot pattern which is displayed on a printed material etc., aims to enable informatization expeditiously by recognizing directionality, on the occasion of informatization from the dot pattern, and to enable checking an error of a layout state of dots, and further, to heighten security. In this connection, in this invention, on a medium surface of a printed material etc., a plurality of lattice dots 4 are disposed in a rectangular shape and set as a block, and they are regularly and continuously disposed, and such a dot that 1 piece of the lattice dots 4 which exists in the block was disposed by being shifted unidirectionally is set as a key dot 2, and by setting said key dot 2 as a representative point, they are disposed at a circumference of the key dot 2, and by setting a center which was surrounded by the lattice dots 4 of 4 points as a hypothetical point, and by setting this as a start point, at an end point which was represented by a vector, a plurality of information dots 3 which have various information recognized are arranged in accordance with a predetermined rule by a dot code generation algorithm to thereby generate a dot pattern 1, and the dot pattern 1 is imported as image data by a camera, and, from a numerical value which was calculated by digitizing this, information, a program are outputted.
Owner:YOSHIDA
Multi-view-point video capturing system
InactiveUS20060146142A1Easy to correctTelevision system detailsImage analysisVideo imageAngle of view
The present invention reduces the burden on a target object such as a test subject by acquiring multi perspective video image data by photographing the target object by means of a plurality of cameras and acquires the actual movement including a picture of the target object independently of the measurement environment by acquiring camera parameters such as the attitude and zoom of the camera along with picture data. By acquiring video image data by synchronizing a plurality of cameras during photographing by the cameras and at the same time acquiring camera parameters in sync with the video image data, rather than simply acquiring video image data and camera parameters, the present invention acquires the actual movement of the target object independently of the measurement environment and acquires the movement of the video image itself of the target object rather than movement of only representative points.
Owner:ARISAWA HIROSHI +1
Full and semi-batch clustering
InactiveUS20130262465A1Digital data information retrievalDigital data processing detailsMultidimensional dataDocument preparation
A method for clustering documents is provided. Each document is represented by a multidimensional data point. The data points are initially assigned to a respective cluster and serve as their initial representative points. Thereafter, in an iterative process, the data points are clustered among the clusters, by assigning the data points to the clusters based on a comparison measure of each data point with the cluster or its representative point, and a threshold of the comparison measure. Based on this clustering, a new representative point for each of the clusters can be computed. Optionally, overlapping clusters are merged. For the next iteration, the new representative points are used as the representative points. An assignment of the documents to the clusters is output, based on a clustering of the data points in the latest iteration. Multiple batches may be processed, retaining the initial clusters to which the original batch was assigned.
Owner:XEROX CORP
Collision detection system, collision detection data generator, and robot
InactiveUS20140025203A1Simple processProgramme-controlled manipulatorComputer controlViewpointsCollision detection
A collision detection system includes a memory unit that stores first collision detection data corresponding to a first object and second collision detection data corresponding to a second object as collision detection data of objects, and a processing unit that performs a collision determination between the first object and the second object in the world coordinate system based on the first collision detection data and the second collision detection data. The memory unit stores representative point data obtained by discretization of depth map data of the objects as seen from a predetermined viewpoint in model coordinate systems of the objects using cubic areas set in the model coordinate systems as the collision detection data.
Owner:SEIKO EPSON CORP
Image processing system, image processing apparatus, aberration correction method, and computer-readable storage medium
ActiveUS20100090929A1Reduce errorsImage enhancementCharacter and pattern recognitionImaging processingComputer science
An image processing system, which corrects an aberration generated in an optical system by executing coordinate conversion of pixels of an image, has a table which holds correspondence between the positions of pixels before and after the coordinate conversion, acquires coordinates after conversion corresponding to the coordinates of representative points to be converted from the table, and calculates coordinates after conversion of a pixel between the acquired representative points by an interpolation calculation using a Lagrange interpolation formula.
Owner:CANON KK
Method and device for automatic white balance processing of the image
InactiveCN101193317AConvenient and flexible useColor signal processing circuitsWhite pointColor temperature
The invention discloses a method for automatically processing white balance of image and a device thereof. The method mainly includes the following steps: a color reference point setting in color space and a color representative point in image are determined; the color representative point and the color reference point are compared in the position information of the setting color space and color temperature of the image is determined according to the result of the comparison; and according to the color temperature, the image is adjusted and processed by the white balance. The device mainly includes a reference point determining module, a representative point determining module, a color temperature determining module and a color component adjusting module. By using the invention, white balance adjustment of image can be automatically performed without depending on a standard white point in the image.
Owner:BEIJING SUPERPIX MICRO TECHNOLOGY CO LTD
Self-position identifying method and device, and three-dimensional shape measuring method and device
InactiveUS20090167761A1Improve memory efficiencyExact matchImage enhancementImage analysisVoxelAlgorithm
The invention includes a step S1 for inputting into a computer coordinate values on a three-dimensional shape; a step S4 for structuring an environment model that partitions a spatial region, in which a three-dimensional shape exists, into a plurality of voxels of rectangular solids, and stores each position; and a step S5 for setting and recording a representative point and an error distribution thereof, within the voxel corresponding to the coordinate value. If there is no data in a previous measurement position, position matching is performed in a fine position matching step S7 so as to minimize an evaluation value regarding the distances between adjacent error distributions by rotating and translating a new measurement data and error distribution for the environment model for a previous measuring position, or rotating and translating an environment model for a new measuring position, relative to an environment model for a previous measuring position.
Owner:IHI CORP
Fine structure deformation monitoring method and system based on ground three-dimensional laser scanning
The invention provides a fine structure deformation monitoring method based on ground three-dimensional laser scanning. The method comprises steps that, a GPS or a total station is utilized to arrange artificial target points, and a target point monitoring net is established; point cloud data at a surface of a structure at different moments are acquired by utilizing a ground three-dimensional laser scanner; data acquired by the target point monitoring net and data acquired by the ground three-dimensional laser scanner are converted to a same reference coordinate system; the data in the same reference coordinate system are utilized to determine and fit a geometrical model of the structure; point cloud data segmentation is carried out according to the geometrical model of the structure obtained through fitting, the point cloud data segmentation is divided into multiple parts, and each part is fitted into one representative point; change of coordinates and vectors of the representative points obtained through point cloud data fitting at different moments are contrasted to carry out fine structure deformation analysis. The fine structure deformation monitoring method can realize monitoring on fine structure deformation.
Owner:BEIJING UNIV OF TECH
Object region data describing method and object region data creating apparatus
InactiveUS20050280657A1Easy to createEasy to handleImage enhancementImage analysisGraphicsRepresentative point
An object region data describing method of describing information about the object region in an image over a plurality of frames determines the region of a target object in an image using an approximate function that approximates the trajectory obtained by arranging, in the direction of frame advance, one representative point of an approximate figure for the object region and the difference values for determining the other representative points and describes information about the object region using a parameter for the function.
Owner:MAXELL HLDG LTD
Map information correction device, map information correction method, program, information providing device and information acquisition device using the map information correction device
InactiveCN101010710ACorrect position deviationInstruments for road network navigationMaps/plans/chartsComputer scienceCorrection method
A map information correction device, a map information correction method, a program, an information providing device using the program, and information acquisition device, in which displacement of an object caused by an error between different maps is correctable. An information acquisition device (600) has a positional information receiving section (601) for receiving information on an object including outline position reference information for referring a position near the object, the information on an object corresponding to a digital map database (A507) on the information provider side; an outline position specifying section (602) for specifying an outline position; a representative position extraction section (604) for extracting a representative point from the outline position; and an inner shape correction section (605) for performing interpolation processing by the use of information on positions in digital map database (A507) and in digital map database (B603) and correcting at least either the position or the shape of the object so that it fits a second map.
Owner:PANASONIC CORP
Method and system of monitoring around a vehicle
ActiveUS20070008091A1High activityQuick decisionAnti-collision systemsColor television detailsPath computation elementRoad surface
Integrated processing unit captures range images shot by CCD cameras which are respectively provided on front, rear, left and right sides of a vehicle and image processor. Location-allocation unit creates a location-allocation model of an obstacle from the range images and road surface images (heights of images above road surface). Vehicular swept path calculating unit calculates a swept path of each representative point. Collision decision calculates intersection of the obstacle of the location-allocation model with the swept paths of the representative points and judges whether the points cross the obstacle. When a representative point may possibly cross the obstacle, the point is enhanced and displayed together with the obstacle (object) on monitor.
Owner:HITACHI LTD
Backtrack orbit search algorithm
InactiveUS20060122776A1LevelRestrict levelInstruments for road network navigationCosmonautic vehiclesSensing dataLongitude
A method of searching an inventory of satellite remote sensing data for data granules, scenes, or images that cover a specified area of interest whereby each data granule is indexed to the relevant ascending equatorial crossing of the satellite. Representative points in the area of interest are traced backwards along the orbital track to determine where the satellite must have crossed the equator on the ascending pass in order for the sensor to have seen the area of interest. Spatial search of the data is thereby reduced to a simple search on a range of crossing longitudes.
Owner:KNOWLES KENNETH W +1
Method for abstracting grade framework and stereo decomposing of arborescence figure
InactiveCN101231760AEliminate the effects ofCharacter and pattern recognition3D modellingData setDirected graph
The invention discloses a dendriform solid decomposition and graded framework extraction method, which comprises the following steps: a maximum central point diagram is constructed through integral-type boundary distance conversion and integral-type single seed point distance conversion of a solid; a dendriform clustering scheme is generated, the clustering scheme is combined with the maximum central point diagram to extract the central representative point of each clustering, and a classification framework is constructed for classification; branch points are taken as seed points for integral type distance conversion, thus constructing the section of each branch; equidistant faces of the sections are constructed through curved surface unidirectional distance conversion, thus acquiring divisional planes and completing decomposition of the solid, namely, the solid is decomposed into a plurality of blocks; finally, a three-dimensional weighted directed graph is constructed through precise Euclidean distance conversion, the cost value of a compact center is calculated, and the minimal spanning tree is extracted; the central frameworks of the blocks and a connecting framework reaching the centers of the divisional planes are acquired, thus finally getting the graded framework. The invention can measure form and structure, and represent shapes accurately according to test specifications of a plurality of data sets.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI
Information input/output method using dot pattern
InactiveUS7475824B2Reduce regularityInput/output for user-computer interactionRecord carriers used with machinesCrucial pointAlgorithm
A plurality of lattice dots are disposed in a rectangular shape and set as a block, and they are regularly and continuously disposed, and a dot that forms one of the lattice dots which exists in the block is disposed by being shifted unidirectionally and is set as a key dot, and by setting the key dot as a representative point, a plurality of information dots are disposed, and by setting a center which was surrounded by the lattice dots of four points as a hypothetical point, and by setting this as a start point of a vector, at an end point of which, a plurality of information dots which have various information are arranged in accordance with a predetermined rule by a dot code generation algorithm to thereby generate a dot pattern.
Owner:YOSHIDA
3D Object Detecting Apparatus and 3D Object Detecting Method
ActiveUS20120219183A1Simple configurationAccuracy can be improved and stabilizedImage enhancementTelevision system detailsHigh densityImage detection
A 3D-object detecting apparatus may include a detection-image creating device configured to detect a 3D object on an image-capture surface from an image captured by an image-capture device and to create a detection image in which a silhouette of only the 3D object is left; a density-map creating device configured to determine the 3D objects spatial densities at corresponding coordinate points in a coordinate plane on the basis of the detection image and mask images obtained for the corresponding coordinate points on the basis of virtual cuboids arranged for the corresponding coordinate points and to create a density map having pixels for the corresponding coordinate points such that the pixels have pixel values corresponding to the determined spatial densities; and a 3D-object position detecting device that detects the position of the 3D object as a representative point in a high-density region in the density map.
Owner:ALPINE ELECTRONICS INC
Fuzzy clustering based image retrieval method
ActiveCN104298713AMeet the needs of real-time retrievalGuaranteed retrieval efficiencyCharacter and pattern recognitionSpecial data processing applicationsImage retrievalFuzzy clustering
The invention discloses a fuzzy clustering based image retrieval method. The fuzzy clustering based image retrieval method comprises the following steps of S11, establishing a characteristic value library for images in an image library and numbering the images ; S12, selecting N images with image separation distances larger than a distance threshold value A1 from the image library and conducting first-time classification on the residual images to form N categories of image sets; S13, conducting the step S12 on the image sets with image quantities larger than a quantity threshold value in the N categories of image sets till the image quantity of each image set is smaller than the quantity threshold value and obtaining M representative points; S14, partitioning all images in the image library into the image sets represented by highest-similarity-level representative points according to similarity levels between the images and the M representative points; S15, conducting characteristic valuing on input images to be retrieved, respectively calculating the similarity levels between the input images and all representative points and selecting a plurality of highest-similarity-level representative points to perform retrieval. The fuzzy clustering based image retrieval method narrows a retrieval range on the basis that retrieval efficiency is ensured, and reduces retrieval working amount.
Owner:BEIHANG UNIV
Image taking apparatus
InactiveUS20060008264A1Maintain continuityReduce troubleTelevision system detailsProjector focusing arrangementMode switchMode switching
In an image taking apparatus according to the present invention, focus adjustment is performed based on image information in a focus adjustment area within a captured image in response to a movement instruction from a user as well as a focus adjustment mode switching instruction from the user. When detecting an instruction to switch to a position non-fixed focus adjustment mode, an initial position of the focus adjustment area in the position non-fixed focus adjustment mode immediately after mode switching is determined based on a position of a representative point of the focus adjustment area immediately before the mode switching.
Owner:KONICA MINOLTA PHOTO IMAGING
Multi-view-point video capturing system
To reduce a burden on an object such as an examinee by photographing the object with a plurality of cameras to obtain image data by multiple view points, and to capture the actual motion of the object including its image independently of a measuring environment by acquiring camera parameters such as camera posture and zooming along with image data. Instead of simply acquiring image data and camera parameters, image data is acquired by synchronizing a plurality of cameras at camera photographing and camera parameters are acquired in synchronization with this image data, whereby the actual motion of the object is captured independently of a measuring environment, and additionally the motion of the image itself of the object rather than the motion of representative points only is acquired.
Owner:有泽博
Big-data clustering algorithm based on cloud computing platform
InactiveCN103838863AEasy to handleEasy to digSpecial data processing applicationsData setMachine learning
The invention discloses a large-data clustering algorithm based on a cloud computing platform. Primitive data is pre-processed; data are divided into M sub-data and distributed to M Map functions and local clustering is carried out on the sub-data; clusters with the same key are combined; if the number R of practical clusters is smaller than the number k of clusters, the number c of representative points and a constriction factor a are regulated and clustering is carried out again until termination conditions are achieved. if a new data set is generated, local clustering is carried out according to judgment conditions that the number K of new data source centers is larger than the obtained number K of clusters before updating or the number of new data source points is larger than the number of data source points before updating. According to the large-data clustering algorithm based on the cloud computing platform, the parallel computing capacity of a high-performance clustering system of cloud computing is used for solving the problem that mass data need to be processed in clustering, and therefore a relation of the data can be rapidly and efficiently dug up.
Owner:INNER MONGOLIA UNIV OF SCI & TECH
Method for measuring curved surface of workpiece, program and medium thereof
ActiveUS20050086025A1Simple calculationPromote generationFeeler-pin gaugesMechanical counters/curvatures measurementsAxis–angle representationPhysics
A theoretical expression of a workpiece (W) the curved surface of which is measured by a measuring probe (110) equipped with a stylus (111) is specified, a measuring area where the measurement is executed on the measuring surface of the workpiece (W) is determined, and the axis angles of the stylus (111) are determined based on the coordinate values and the normal vector of a representative point determined in the measuring area.
Owner:MITUTOYO CORP
Method for rapidly and accurately focusing and scanning pathological section tissue on basis of image collection device
ActiveCN104390981AFew focal pointsFast scanningMaterial analysis by optical meansImaging dataRepresentative point
The invention provides a method for rapidly and accurately focusing and scanning pathological section tissue on the basis of an image collection device. The method comprises steps as follows: (1), the image collection device is prepared; (2), a representative point on the pathological section tissue is selected, a focus point of the representative point is focused, a focal length of each representative point is calculated, and a virtual plane is fit; (3), a first scanning line of X, Y and Z axes is taken as a movement track, and the pathological section tissue is divided into at least two lines for scanning; (4), a camera starts capturing images, the movement track of Z axis is continuously corrected according to the clarity trend of a front line and a rear line obtained by the camera in the process, that is, the focal length is changed; and (5), scanning is completed. The invention further provides a scanner based on the method. By means of the method, a large quantity of focus points is reduced, a rough virtual plane is obtained, and the movement track of the Z axis is continuously corrected according to image data in the scanning process, so that the problems of low focusing speed, inaccuracy and the like are well solved.
Owner:KONFOONG BIOTECH INT
Self-position identifying method and device, and three-dimensional shape measuring method and device
The invention includes a step S1 for inputting into a computer coordinate values on a three-dimensional shape; a step S4 for structuring an environment model that partitions a spatial region, in which a three-dimensional shape exists, into a plurality of voxels of rectangular solids, and stores each position; and a step S5 for setting and recording a representative point and an error distribution thereof, within the voxel corresponding to the coordinate value. If there is no data in a previous measurement position, position matching is performed in a fine position matching step S7 so as to minimize an evaluation value regarding the distances between adjacent error distributions by rotating and translating a new measurement data and error distribution for the environment model for a previous measuring position, or rotating and translating an environment model for a new measuring position, relative to an environment model for a previous measuring position.
Owner:IHI CORP
Real-time predicting method for output of wind electric field
InactiveCN101794996AAccurateImprove forecast accuracyClimate change adaptationSingle network parallel feeding arrangementsPower gridEngineering
Owner:EAST CHINA GRID +1
Lane marker recognizing apparatus
InactiveUS20090268026A1Improve recognition accuracyImprove accuracyCharacter and pattern recognitionColor television detailsPattern recognitionComputer graphics (images)
A lane marker recognizing apparatus which recognizes stud-type lane markers from acquired road image includes a candidate region extracting means for extracting a region having the possibility of being an image portion of the lane marker, from the road image, as a lane marker candidate region, a real space representative point calculating means for determining a representative point of the lane marker candidate region according to a predetermined condition, and calculating a real space position corresponding to the representative point as a real space representative point, a grouping means for forming one group of the real space candidate points having a relative distance within a predetermined range set according to standards on the lane marker, and a lane marker position recognizing means for recognizing the position of the lane marker based on the real space representative point formed into one group by the grouping means.
Owner:HONDA MOTOR CO LTD
Image processing apparatus, image processing method and image processing program
InactiveUS20110170600A1Increase probabilityReduce probabilityImage enhancementPulse modulation television signal transmissionImaging processingAlgorithm
Disclosed herein is an image processing apparatus, including: a representative-point storing section; an evaluation-value table generation section; a peak detection section; and a correlation determination section, wherein an operation carried out by the evaluation-value table generation section to generate the evaluation-value table on the basis of representative points stored in the representative-point storing section, an operation carried out by the peak detection section to detect the candidate vector, an operation carried out by the correlation determination section to determine the correlation between the representative point and the referenced point as well as an operation carried out by the correlation determination section to update the representative-point storing section in accordance with a result of the operation to determine a correlation between the representative point and the referenced point are repeated as long as existence of a significant candidate vector is determined.
Owner:SONY CORP
Method of coding and decoding image
InactiveUS20050226336A1Increase volumeReduce the amount requiredTelevision system detailsPicture reproducers using cathode ray tubesMotion vectorRepresentative point
A method of simplifying the arithmetic operation in a global motion compensation process approximates the motion vector field of the whole image without using many parameters. Motion vectors in the global motion compensation are found by the interpolation and / or extrapolation of the motion vectors of a plurality of representative points 602, 603 and 604 having particular features in the spatial distance thereof. Since the shift operation can be substituted for the division for synthesizing a predicted image of global motion compensation, the processing using a computer or a dedicated hardware is simplified.
Owner:HITACHI LTD
Collision detection system, collision detection data generator, and robot
A collision detection system includes a memory unit that stores first collision detection data corresponding to a first object and second collision detection data corresponding to a second object as collision detection data of objects, and a processing unit that performs a collision determination between the first object and the second object in the world coordinate system based on the first collision detection data and the second collision detection data. The memory unit stores representative point data obtained by discretization of depth map data of the objects as seen from a predetermined viewpoint in model coordinate systems of the objects using cubic areas set in the model coordinate systems as the collision detection data.
Owner:SEIKO EPSON CORP
A Coding Method for Spatial Features of Vector Data
InactiveCN102289464AReduce computational complexitySimplify spatial operationsSpecial data processing applicationsFeature vectorMinimum bounding rectangle
The invention discloses a coding method based on the spatial characteristics of vector data primitives, the steps of which are: determining the coded quadtree grid reference; Row number and column number, perform quadtree row and column encoding; select the point that best represents the primitive, and generate a representative point code according to the relative position of this point in the quadtree grid reference; base on the regional characteristics of the primitive Contour encoding; and then encode the orientation of the primitive data based on the direction of the head point of the primitive relative to the representative point; finally, according to the unified coding rules, combine the four sub-codes into the spatial feature code of the primitive, as the unique identification of the primitive . The invention comprehensively considers multiple spatial features of vector data elements, solves the influence of area re-division on coding, eliminates the interference of artificial classification, and improves the efficiency and accuracy of coding vector data primitives.
Owner:NANJING NORMAL UNIVERSITY
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