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53results about How to "Reduce segmentation" patented technology
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Domain adaptation via class-balanced self-training with spatial priors
InactiveUS20190130220A1Reducing target segmentation lossReduce segmentationImage enhancementImage analysisSelf trainingDomain adaptation
A vehicle, system and method of navigating a vehicle. The vehicle and system include a digital camera for capturing a target image of a target domain of the vehicle, and a processor. The processor is configured to: determine a target segmentation loss for training the neural network to perform semantic segmentation of a target image in a target domain, determine a value of a pseudo-label of the target image by reducing the target segmentation loss while providing aa supervision of the training over the target domain, perform semantic segmentation on the target image using the trained neural network to segment the target image and classify an object in the target image, and navigate the vehicle based on the classified object in the target image.
Owner:GM GLOBAL TECH OPERATIONS LLC
Complex plain river network area hydrological model processing method based on ArcGIS
ActiveCN104978451AEnhanced couplingIn line with hydrological lawsSpecial data processing applicationsHydrometryRural area
The invention discloses a complex plain river network area hydrological model processing method based on ArcGIS. The method is characterized in that an underlying surface feature of a city, a country(comprising polder area and non-polder area) and water surface, and spatial distribution of the same can be distinguished in an aspect of sub-basin division, and thus a runoff generation and flow concentration process of different underlying surface types can be computed by using of different hydrological model; a river channel is interrupted at a river network bifurcated point and a city-country water region junction, a one-to-one correspondence of a catchment and a river reach is realized, thus coupling of hydrological model and hydrodynamic model is facilitated, and an unneccessary river channel segmentation in a modeling process can be reduced; a quick distribution of an underlying surface to a closest river channel is realized by an "Euclidean Allocation" tool; and adjustment of runoff process is performed by using a drainage modulus and an urban pipeline network maximum discharge capacity, the adjusted runoff process is further accorded with a hydrological rule in the plain area, and a simulation accuracy can be improved theoretically.
Owner:HOHAI UNIV
Video target extracting method based on watershed algorithm
InactiveCN1529284AImprove accuracySmall amount of calculationImage analysisCharacter and pattern recognitionComputer visionVisual study
First, initial frame is captured from video frequency input. Next, based on configuration file generated by user in advance in monitored area, local rectangle region, where there is an object in video frequency needed to pick up, is determined. Then, in the determined rectangle region, pretreatment, watershed segmentation, color analysis and regional clustering process are carried out. Finally, video object picked up is saved. The invention is as a pioneer in video monitoring area based on content in order to solve issues: large calculated amount of picked video object, not accuracy. The invention is applicable to picking up pointed monitored object in a scene. Experiment indicates the algorithm in high real time, basic consistence between clustering processed pixel block and monitored object. Thus, the invention provides basis for further tracking video object.
Owner:SHANGHAI JIAO TONG UNIV
Division method for extracted watershed SAR image with threshold method and marking
InactiveCN101556693AEliminate the effects ofEliminate excessive useless markupImage analysisPattern recognitionSar image segmentation
The invention relates to a division method for an extracted watershed SAR image with a threshold method and marking, which combines an OTSU threshold method and watershed marking, and uses an image after threshold division as a source for marking a watershed mark, thereby effectively eliminating the influence of grain information and obtaining a new division method for the watershed SAR image based on threshold division. The method comprises the following steps: (1) Gaussian low-pass filtering is carried out for an original image Img to obtain an image GImg after filtering; (2) gradient is calucated for the image GImg after filtering to obtain an gradient image PGImg; (3) internal marker LImg of the original image Img is extracted with an Otsu method; (4) a classical watershed conversion is carried out for the internal marker to obtain an external maker WLImg; (5) the gradient image PGImg is modified with the internal marker and the external marker, and the forcement minimum technique is utilized for the modification so as to enable a local least area to only appear at a marking position; and (6) watershed conversion is carried out for the modified gradient image to obtain a final division image RImg. When the method is used for SAR image division, not only over-division can be reduced, but also the accuracy of the edge can be ensured.
Owner:XIDIAN UNIV
Cell separation method
InactiveCN102881017AClear thinkingEasy to implementImage analysisBoundary knot methodImage segmentation
The invention relates to the field of image segmentation, in particular to a cell separation method. The cell separation method comprises the following steps: A, pre-segmenting a cell image by an OSTU method; B, performing hole filling on the pre-segmented image by a boundary tracking method; C, performing watershed segmentation on the image subjected to hole filling; and d, combining 'over-segmentation' regions of the segmented image and re-segmenting 'incomplete segmentation' regions. Compared with the conventional segmentation algorithm synthesizing concave point analysis and boundary detection and the conventional segmentation algorithm based on mathematical morphology, the cell separation method is clear in thinking and easy to implement in codes, so that the cell separation method is easy to implement. Compared with the traditional method, the cell separation method can obviously reduce the over-segmentation conditions.
Owner:成都聚蚁科技有限公司
Super high-rise core tube internal and external hanging tower crane support beam structure and construction method thereof
InactiveCN103264968AFull utilization of hoisting rangeReduce the number of jackingsCranesSupporting systemTower crane
The invention relates to a super high-rise core tube internal and external hanging tower crane support beam structure and a construction method thereof. Two parallel horizontal tower crane support girders are arranged, the sections form box shapes, a root part of each girder is connected with a core tube embedded part through a girder ear plate, inclined supports are circular pipes, one end of the inclined support is supported and connected to a core tube, the other end is connected with the vertical tail end of the corresponding girder, one end of a horizontal pull rod is connected to the core tube in an inclined manner, the other end is connected with the horizontal tail end of the corresponding girder, and the two girders are connected by a horizontal connection rod to form a main body frame support system. According to the super high-rise core tube internal and external hanging tower crane support beam structure and the construction method, the structure is simple, a tower crane is externally hung on the outside of the core tube so that influence of structural construction in the core tube is greatly reduced and utilization of the hanging scope of the tower crane is sufficient, the construction is simple, and the cycle is shortened.
Owner:CHINA CONSTR FIRST DIV STEEL STRUCTUREENG
Grabcut-based sandstone particle improved segmentation algorithm research
PendingCN111681249AReduce the number of iterationsFast convergenceImage enhancementImage analysisAlgorithmPixel image
The invention discloses Grabcut-based sandstone particle improved segmentation algorithm research, and provides a sandstone particle size segmentation algorithm based on an image. Firstly, a method for adaptively and automatically generating a target candidate box is provided, a foreground and background mixed model can be quickly segmented from a background image, the time for manually drawing the box is greatly shortened, and the requirement for real-time performance in an engineering field is met; secondly, the mass center of the super-pixel image of the SLIC is clustered by adopting a K-Means clustering method based on the SLIC, so that the number of samples participating in clustering can be greatly reduced; the Gibbs energy function can determine the weights of the two segmented edges; in order to reduce the number of iterations of foreground and background segmentation of an unknown label of Grabcut in a candidate box, an information entropy function with a certain weight is added to an energy function of Gibbs, segmentation information of a segmented image is supervised, and the real-time performance of the system is further optimized. The invention can be applied to real-time on-line analysis of the grain size of the sandstone in a factory.
Owner:ZHONGSHAN AISHANGZHITONG INFORMATION TECH CO LTD
Conveyor belt ore rock particle image segmentation method
ActiveCN109859224AReduced Clarity RequirementsSolve noiseImage analysisMinimum bounding rectangleImage segmentation
The invention relates to a conveyor belt ore rock particle image segmentation method. The method comprises the following steps: 101, preprocessing a to-be-segmented conveyor belt ore rock particle image, and inputting the to-be-segmented conveyor belt ore rock particle image into a pre-trained first convolutional neural network model to obtain a first contour map; 102, inputting the first contourmap into a pre-trained second convolutional neural network model to obtain a second contour map; 103, performing binarization processing on the second contour map by using a preset threshold, and performing morphological closed operation processing on the binarized map to obtain a third contour map; 104, obtaining the contour, the minimum bounding rectangle of the contour and the area of the contour in the third contour map, screening by using the minimum bounding rectangle of the contour and the area of the contour, and drawing the screened contour as a segmentation map. According to the method, deep learning is utilized to realize conveyor belt ore rock image contour detection and ore rock size distribution automatic statistics, the requirement for image definition is reduced, image segmentation is accurate, and application is convenient.
Owner:NORTHEASTERN UNIV
System and method for preparing high-octane gasoline, aviation kerosene and naphthenic base oil with total-hydrogen-type coal tar
ActiveCN105419864AIncrease profitImprove anti-carbon performanceMolecular sieve catalystsTreatment with hydrotreatment processesIsomerizationHydrogen
The invention relates to a system and method for preparing high-octane gasoline, aviation kerosene and naphthenic base oil with total-hydrogen-type coal tar. The system is formed by a coal tar refining device, a distillate oil deep refining, isomerization-visbreaking and post-refining device and a naphtha dehydrogenizing and aromatic extraction device. The method includes the steps that coal tar serves as a raw material, is subjected to hydrorefining, deep refining, isomerization visbreaking and post-refining treating, and then is subjected to a naphtha dehydrogenizing technology and an aromatic extraction technology, and the high-octane gasoline, the aviation kerosene and the naphthenic base oil are obtained. Meanwhile, a mass of hydrogen is generated to serve as supplemented hydrogen of coal tar hydrogenation, the obtained product oil is good in quality, and after detecting is carried out according to the national standard, various detected indexes meet the national standard.
Owner:王树宽
Visual perception enlightening high-resolution remote-sensing image segmentation method
InactiveCN105513060AEasy to divideReduce segmentationImage enhancementImage analysisInformation processingPattern recognition
The invention discloses a visual perception enlightening high-resolution remote-sensing image segmentation method, and the method enables an object boundary in an image to be divided into an intensity boundary corresponding to a spectrum homogeneous area, and a texture boundary corresponding to a spectrum change area, and respectively extracts two types of visual information which serve as the main basis of segmentation. The method comprises the steps: filtering noise and texture information in the image through a nonlinear filtering method, and obtaining the intensity gradient through a gradient operator; analyzing the texture features of the image through employing a Gabor filter, enabling the filtering output of a plurality of channels to be merged and processed through the gradient operator, and obtaining the texture gradient of the image; carrying out the fusion of the intensity gradient and the texture gradient, carrying out the conversion of the gradient image after fusion through watershed conversion, and achieving the segmentation of the image. Compared with the prior art, the method improves the boundary accuracy of image segmentation, reduces the over-segmentation and under-segmentation phenomena, and can be effectively used in the field of high-resolution remote-sensing image information processing.
Owner:NAVAL AERONAUTICAL & ASTRONAUTICAL UNIV PLA
Method and device for resource distribution
InactiveCN102984802AIntegrity guaranteedImprove integrityTransmission path multiple useWireless communicationBusiness dataResource allocation
The invention provides a method and a device for resource distribution. The method for resource distribution comprises that after uplink authorization is acquired, whether the variable Bj of each radio bear (RB) is larger than zero is judged, wherein the Bj of each RB is used for identifying the length of the radio resources which need to be distributed to the RB; if the Bj of each RB is larger than zero, business data unit fractional length which is larger than or equal to the Bj of each RB and is the most close to the Bj of each RB is acquired according to a business data unit length vector corresponding to each RB, wherein elements in the business data unit length vector is used for identifying the fractional length of each business data unit of each RB; a small value of the acquired fractional length of each business data unit and the length of current residual uplink authorization resources is chosen to be a first round of resource distribution value of each RB; the uplink authorization resources is distributed to each RB according to the first round of resource distribution value. According to the method and the device for resource distribution, segmentation of a signal distribution unit (SDU) can be effectively lowered, cost of uplink message is reduced, and the probability of retransmission is lowered.
Owner:이노피데이인코포레이티드 +1
Image segmentation method and apparatus
ActiveCN106097313AImprove segmentationSmooth changeImage enhancementImage analysisUndirected graphImage segmentation
Embodiments of the invention provide an image segmentation method and apparatus. The method comprises the steps of mapping all pixel points of an image into a CIELAB color space; uniformly segmenting the image into first regions with the same number as first super-pixels, and performing partition on pixel points in each first region and regions near the first region to obtain the first super-pixels corresponding to the first regions; mapping all the first super-pixels into an RGB color space, averaging pixel points in the first super-pixels to obtain corresponding second super-pixels, and constructing an undirected graph by taking all the second super-pixels as vertexes and taking a similar distance between every two adjacent second super-pixels as an edge; and forming a segmented region by the two adjacent second super-pixels with the similar distance meeting a preset condition in the undirected graph, and judging whether the adjacent segmented regions are combined or not according to a weight value of the edge in the adjacent segmented regions. According to the embodiments of the image segmentation method and apparatus, the pixel points in the image can be changed smoothly, the over-segmentation phenomena are reduced, and the image segmentation effect is improved.
Owner:甘肃阡陌文化旅游产业有限公司 +1
Data encapsulation method and device
ActiveCN101998508AReduce overhead dataReduce segmentationNetwork traffic/resource managementWireless network protocolsAccess networkHigh rate
The embodiment of the invention relates to a data encapsulation method and a data encapsulation device. By the data encapsulation method and the data encapsulation device in the embodiment of the invention, the encapsulation processing of data packets by each protocol layer in a high rate packet data (HRPD) network at a sending end is changed, so that fragments during the encapsulation of the data packets can be reduced, the size of the packets is increased and bit filling is canceled; therefore, the overhead data of each protocol layer unrelated to useful data during data encapsulation are reduced, transmission resources between an access terminal in a heterogeneous network system and an access network in the HRPD network are saved, and transmission efficiency is improved.
Owner:HUAWEI TECH CO LTD
Steel-concrete mixing type anti-shearing connecting piece
InactiveCN102877550ASimple structureEasy constructionBuilding constructionsReinforced concreteWave shape
The invention provides a steel-concrete mixing type anti-shearing connecting piece which is applicable to connecting a wave-shaped steel web plate and a concrete top plate. The top of the wave-shaped steel web plate is provided with a hole; the upper part of the hole is respectively welded with one or more combined steel bars along the vertical direction of the two sides of the wave-shaped steel web plate; at the position of a combined face of the wave-shaped steel web plate and the concrete top plate, one horizontal frange plate which is in convex-concave complementation and tight adhesion with the wave-shaped steel web plate is respectively arranged at each one of the two sides of the wave-shaped steel web plate in the vertical direction; the frange plate is provided with a plurality of vertical welding nails; a connection structure above the frange plate stretches into the reinforced concrete top plate connected with the frange plate; and a transverse steel bar in the concrete top plate penetrates through the hole on the wave-shaped steel web plate, and the concrete of the wave-shaped steel web plate is poured. The steel-concrete mixing type anti-shearing connecting piece has the characteristics of an imbedded anti-shearing connecting piece and a frange type anti-shearing connecting piece; steel products are saved, the machining is convenient, the construction is convenient and the anti-shearing strength is high; the strength, the rigidity and the durability of a connecting part are better; and the integrity of the combined part is good, and the social and economic benefits are good.
Owner:HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD
Data set package method and device
ActiveCN103517335AReduce the number of copiesHigh speedNetwork traffic/resource managementData setPhysical layer
The invention provides a data set package method and device. The data set package method comprises the steps that the fact that the RB of data to be transmitted organizes the data to be transmitted to uplink authorization resources according to an SDU length vector corresponding to the RB is determined; the data to be transmitted organized to the uplink authorization resources are subjected to MAC SDU set package first, then the difference between the practical head length and the reserved head length of the MAC PDU is determined according to the MAC SDU set package results; or the length of RLC PDU padded in the last MAC SDU is determined, then the data to be transmitted organized to the uplink authorization resources are subjected to MAC SDU set package; according to the difference between the practical head length and the reserved head length of the MAC PDU or the length of the RLC PDU, and MAC PDU set package is carried out in a buffer zone shared by the MAC layer and the physical layer. According to the data set package method and device, address space waste is avoided, and the MAC PDU set package speed and efficiency are improved.
Owner:新奇点智能科技集团有限公司
Level set image segmentation method based on self-adaptive parameter
InactiveCN104166991AFast convergenceGood segmentation effectImage analysisSelf adaptiveImage enhancement
The invention discloses a level set image segmentation method based on a self-adaptive parameter, for mainly solving the problem that various parameters in a curved surface evolution equation of a conventional level set image segmentation algorithm need to be preset in advance. The realization steps comprise: (1), inputting an image to be segmented; (2), setting a time step length, and giving iteration frequency; (3), carrying out Gauss filtering processing on the input image; (4), adding the self-adaptive parameter to a level set evolution equation to replace an original parameter constant; (5), starting level set iteration operation; (6), determining whether the iteration frequency reaches an upper limit or is convergent; and (7), determining whether a termination condition is achieved, if not, returning to step (5), and otherwise, outputting a segmentation result graph. The method provided by the invention has the advantages of short time, accurate segmentation result and high stability, thereby being capable of application in such technical fields as image enhancement, mode identification and object tracking.
Owner:XIDIAN UNIV
Display having positive control mode and negative control mode permitting address according to matrix form
InactiveCN1591113AReduce segmented and non-segmented shadowsReduce segmentationStatic indicating devicesNon-linear opticsContactorWork pattern
A method of making display having a display area capable of displaying a plurality of characters in a background, the characters including a plurality of segments, includes the steps of: providing a substrate; forming a first patterned conductor layer on the substrate having electrically separate areas defining character regions, the first patterned conductor being substantially coextensive with the display area; depositing a layer of light modulating material over the first patterned conductor layer; forming a second patterned conductor layer over the layer of light modulating material and having electrically separate areas defining the segments of the characters and the background, the second patterned conductor being substantially coextensive with the display area; depositing a dielectric layer over the second patterned conductor layer, the dielectric layer defining holes over each segment and the background area of the second patterned conductor layer; and forming a third patterned conductor layer located over the dielectric layer defining a plurality of conductors connected to the areas defining the character segments in the second patterned conductor and the background area through the holes in the dielectric layer; at least one of the conductors being connected to a segment in more than one character, whereby the display may be addressed in a matrix fashion by electrically addressing the first and second plurality of contacts, and may be driven in a positive or negative mode.
Owner:EASTMAN KODAK CO
Liver tumor segmentation method and system based on deep learning
PendingCN112750137ARealize automatic segmentationImprove segmentationImage enhancementImage analysisPattern recognitionData set
The invention relates to a liver tumor segmentation method and system based on deep learning. The method comprises the following steps: preprocessing a collected data set; a network model being built according to the preprocessed data, wherein the network model comprises a plurality of lower convolution layers and a plurality of upper convolution layers, the lower convolution layers are connected to the upper convolution layers through jumping, and feature maps obtained by the lower convolution layers are connected with the upper convolution layers through an attention module on jumping connection; inputting the preprocessed data into the network model for training to obtain an optimal network model; and segmenting a to-be-processed CT image by using the optimal network model to obtain a liver tumor region. According to the invention, wrong segmentation can be reduced, and high precision can be obtained.
Owner:JIANGNAN UNIV +1
Main girder square steel splicing structure on escalator or moving pavement
InactiveCN101934965AMeet the production requirementsReduce segmentationEscalatorsWelding apparatusButt weldingMetal framework
The invention discloses a main girder square steel splicing structure on an escalator or moving pavement. The structure comprises two pieces of main girder square steel, wherein the ends of the two pieces of main girder square steel are fixed together by permanent butt welding with backing; the backing is made of reinforced square steel; the two ends of the reinforced square steel are extended into cavities at the ends of the two pieces of main girder square steel respectively; the outer surfaces at the ends of the two pieces of main girder square steel are provided with a plurality of punched holes in which a melted soldering flux is filled; the main girder square steel and the reinforced square steel are plugged into each other for welding; the two pieces of main girder square steel are connected by butt welding through the reinforced square steel; and the main girder square steel and the reinforced square steel are plugged into each other for welding so as to form one piece of square steel. The length of the piece of square steel can meet the requirements of manufacturing a metal framework, and the piece of the square steel also meets the requirements of manufacturing the metal framework in mechanical property, so that unnecessary sectioning of the metal framework is reduced, and the manufacturing cost of the metal framework is reduced.
Owner:三六零安全科技股份有限公司
Sectional feeding vacuum distillation method and apparatus for crude oil
InactiveCN102911716AAvoid lateral thermal displacementLess investmentTreatment with plural serial refining stagesProcess engineeringSuperheated steam
The invention discloses a sectional feeding vacuum distillation method and an apparatus for crude oil. The method comprises the steps of omitting relatively long transfer line from the outlet of a vacuum furnace to the vacuum tower; arranging a flashing tower between the vacuum tower and a vacuum distillation tower; passing superheated steam through the bottom of the flashing tower; introducing the raw materials of vacuum distillation to the flashing tower through the vacuum furnace after being heated; educing relative light components (hereinafter referred to flashing top gas) in the flashing tower from the tower top after steam stripping evaporation; entering below a packing layer of some fractioning section of the vacuum distillation tower; and introducing the liquid phase (hereinafter referred to flashing bottom oil) educed from the bottom of the flashing tower to the feeding section of the vacuum distillation tower to perform vacuum distillation. The sectional feeding vacuum distillation method and the apparatus for the crude oil can obviously increase pull-out rate of the vacuum distillation process and improve the quality of the vacuum distillates.
Owner:CHINA PETROLEUM & CHEM CORP +1
Image enhancement processing method and device based on artificial intelligence, equipment and medium
ActiveCN111915541AEasy to handleReduce segmentationImage enhancementImage analysisAlgorithmImage pair
Owner:PING AN TECH (SHENZHEN) CO LTD
Timeslot management method, a related network terminator, a related line terminator and an upstream signal frame structure for a time division multiple access system
ActiveUS9854338B2Sufficient long guard timeIncrease speedTime-division multiplexLoop networksNetwork terminationTime division multiple access
A time slot management method for use in a time division multiple access system that couples a line terminator via a tree-like network to a plurality of network terminations is provided. At least one grant is transmitted by the line terminator towards a network terminator in order to allocate at least one adjacent subsequent corresponding upstream time-slot to the network terminator. The grant is received by the network terminator from the line termination, and it is recognized if the at least one grant is associated to the network termination. Upon recognition of the at least one grant being associated to the network termination by the network terminator, overhead data in the first time slot of the at least one time slot and payload data in each potential adjacent subsequent time slot of at least one time-slot allocated to said network terminator is transmitted.
Owner:ALCATEL LUCENT SAS
Diaphragm and speaker
ActiveUS20190335276A1Improve rigidityReduces segmentation distortionMetallic diaphragmsNon-planar diaphragms/conesEngineeringLoudspeaker
A diaphragm, including: a metal dome, a non-metallic diaphragm portion, and a flexible rim. The non-metallic diaphragm portion is bonded to a metal dome outer periphery, and a non-metallic diaphragm portion outer periphery extends corresponding to a convex direction of the metal dome and expands radially away from the metal dome. The flexible rim is bonded to the non-metallic diaphragm portion outer periphery. The diaphragm of the present application adopts the combination of the metal dome, the non-metallic diaphragm portion, and the flexible rim, the overall rigidity of the diaphragm is enhanced, and the internal damping property of the diaphragm and the compliance of the vibration of the diaphragm can be adjusted, which can effectively reduce segmentation vibration of the diaphragm during high-frequency vibration and reduce the segmentation distortion of the diaphragm at high frequencies, thereby extending the bandwidth of the diaphragm.
Owner:SHENZHEN GRANDSUN ELECTRONICS CO LTD
A color matching instrument of optimized color difference resolution and testing method
PendingCN109060309AForeground and background color difference can be distinguished with high accuracyLow costTelevision system detailsPicture signal generatorsMachine visionImaging processing
The invention belongs to the technical field of light distribution for machine vision, and discloses a color matching instrument of optimized color difference resolution and testing method. The invention comprises an image processing system, a light source controller, a black-and-white industrial camera, a dome light source and the platform, wherein the light source controller is connected to theimage processing system; the image processing system comprises an image acquisition module and a color temperature calculation module; the input end of the light source controller is connected to thedome light source; the output of the light source controller is connected to the image acquisition module; and the black-and-white industrial camera is connected to the image acquisition module. The lens of the black-and-white industrial camera is coaxially mounted on top of the dome light source, which forms reflected beam after reflection from the dome to illuminate the moving platform. The method can calibrate the image processing system to delineate the foreground and background of the testing object and calculate the gray scale of the foreground and background, from which the scheme of light distribution with optimal color difference is obtained and outputted.
Owner:GUANGDONG UNIV OF TECH
Video target extracting method based on watershed algorithm
InactiveCN1312638CImprove accuracyEasy to analyzeImage analysisCharacter and pattern recognitionVideo monitoringComputer vision
First, initial frame is captured from video frequency input. Next, based on configuration file generated by user in advance in monitored area, local rectangle region, where there is an object in video frequency needed to pick up, is determined. Then, in the determined rectangle region, pretreatment, watershed segmentation, color analysis and regional clustering process are carried out. Finally, video object picked up is saved. The invention is as a pioneer in video monitoring area based on content in order to solve issues: large calculated amount of picked video object, not accuracy. The invention is applicable to picking up pointed monitored object in a scene. Experiment indicates the algorithm in high real time, basic consistence between clustering processed pixel block and monitored object. Thus, the invention provides basis for further tracking video object.
Owner:SHANGHAI JIAO TONG UNIV
Assembly multi-view change detection method and device based on feature matching
ActiveCN113283478AReduce the failure rateShorten the production cycleImage enhancementImage analysisPattern recognitionEngineering
The invention relates to an assembly multi-view change detection method based on feature matching. The method comprises the following steps: S1, obtaining a first image and a second image; S2, performing feature point extraction and feature matching on the first image and the second image to obtain a matching pair set, a first mismatching point set of the first image and a second mismatching point set of the second image; S3, acquiring a first to-be-matched region set of the first image according to the first unmatched point set; acquiring a second to-be-matched region set of the second image according to the second mismatching point set; S4, performing feature matching on the first unmatched areas and the second unmatched areas one by one to obtain a plurality of matching results; and S5, outputting the change type of the assembly according to the plurality of matching results. According to the invention, the images of the assembly in different assembly processes and at different visual angles are obtained, and errors in the assembly process can be found in time by identifying the change areas in the images and judging the change type of the assembly, so that the reject ratio of products is reduced, and the production cycle of the products is shortened.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY
Near-eye display device
ActiveCN111221127AReduce segmentationImprove display qualityOptical elementsVibration amplitudeDisplay device
The invention discloses a near-eye display device, which includes a display panel and a vibrating element, wherein the display panel includes a plurality of pixels; the vibrating element is disposed on the side of the display panel, and the vibrating element vibrates to drive the display panel to vibrate, causing multiple pixels to reciprocate and displace, wherein the vibration amplitude of the vibration element is less than 100 [mu]m.
Owner:AU OPTRONICS CORP
System and method for preparing high-octane gasoline, jet fuel, and naphthenic base oil from full-hydrogen coal tar
ActiveCN105419864BIncrease profitImprove anti-carbon performanceMolecular sieve catalystsTreatment with hydrotreatment processesIsomerizationNaphtha
The invention relates to a system and method for preparing high-octane gasoline, aviation kerosene and naphthenic base oil with total-hydrogen-type coal tar. The system is formed by a coal tar refining device, a distillate oil deep refining, isomerization-visbreaking and post-refining device and a naphtha dehydrogenizing and aromatic extraction device. The method includes the steps that coal tar serves as a raw material, is subjected to hydrorefining, deep refining, isomerization visbreaking and post-refining treating, and then is subjected to a naphtha dehydrogenizing technology and an aromatic extraction technology, and the high-octane gasoline, the aviation kerosene and the naphthenic base oil are obtained. Meanwhile, a mass of hydrogen is generated to serve as supplemented hydrogen of coal tar hydrogenation, the obtained product oil is good in quality, and after detecting is carried out according to the national standard, various detected indexes meet the national standard.
Owner:王树宽
A method for installing roof trusses of large-span and large-space steel structures
ActiveCN106284668BReduce construction costsSolve the problem of repeated calculation in slip constructionBuilding roofsUltimate tensile strengthBuilding construction
The invention relates to an installation method for a large-span large-space steel structure roof truss. According to the method, large-span truss sectional hoisting and a truss accumulation sliding technology are adopted, and the installation precision is ensured by checking the concrete strength, sliding and unloading tool strength during truss assembly and the concrete strength during roof truss assembly through establishment of an FEM model before hoisting and sliding. The installation method for the large-span large-space steel structure roof truss has the advantages that not only the construction cost can be reduced, but also the installation period and precision can be better controlled through optimization construction of the existing sliding construction methods.
Owner:JIANGSU JIANGZHONG GROUP
Construction Method of Tower Crane Support Beam Structure Hanging Inside and Outside of Super High-rise Core Tube
InactiveCN103264968BFull utilization of hoisting rangeReduce the number of jackingsCranesSupporting systemTower crane
The invention relates to a super high-rise core tube internal and external hanging tower crane support beam structure and a construction method thereof. Two parallel horizontal tower crane support girders are arranged, the sections form box shapes, a root part of each girder is connected with a core tube embedded part through a girder ear plate, inclined supports are circular pipes, one end of the inclined support is supported and connected to a core tube, the other end is connected with the vertical tail end of the corresponding girder, one end of a horizontal pull rod is connected to the core tube in an inclined manner, the other end is connected with the horizontal tail end of the corresponding girder, and the two girders are connected by a horizontal connection rod to form a main body frame support system. According to the super high-rise core tube internal and external hanging tower crane support beam structure and the construction method, the structure is simple, a tower crane is externally hung on the outside of the core tube so that influence of structural construction in the core tube is greatly reduced and utilization of the hanging scope of the tower crane is sufficient, the construction is simple, and the cycle is shortened.
Owner:CHINA CONSTR FIRST DIV STEEL STRUCTUREENG
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