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112results about How to "Guaranteed complexity" patented technology
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Method and device for image prediction
ActiveCN105163116AGuaranteed complexityImprove forecast accuracyDigital video signal modificationMotion vectorImage prediction
The invention provides a method and a device for image prediction. The method comprises the steps of: obtaining a first reference unit of an image unit, wherein the image unit and the first reference unit obtain respective predicted images by using the same affine model; obtaining motion information of basic motion compensation units at the at least two preset positions of the first reference unit; and obtaining the motion information of the basic motion compensation units of the image unit. Therefore, by multiplexing the motion information of the first reference unit which adopts the same affine pre-model, a motion vector of the current image unit is obtained more exactly, the coding and decoding complexity is kept while the prediction accuracy is improved, and the coding and decoding performance is improved.
Owner:HUAWEI TECH CO LTD +1
Gaze estimation method for head-mounted device based on iris and pupil
ActiveCN106056092ASimple methodHigh gaze point estimation accuracyInput/output for user-computer interactionAcquiring/recognising eyesEstimation methodsThree-dimensional space
The invention discloses a gaze estimation method for a head-mounted device based on iris and pupil. The method is characterized by utilizing a single camera, a single infrared light source and centre calibration points in four equal regions of a screen, extracting eye movement two-dimensional center features and carrying out three-dimensional space modeling on iris and pupil, establishing a three-dimensional gaze direction vector, and with gaze direction angle information being combined, estimating human eye gaze point position. Features of the head-mounted device are taken into full consideration; gaze point estimation precision under the head-mounted device is ensured, and meanwhile, complexity of the whole system structure and calibration process is greatly reduced; and the method is a high-precision and low-complexity solution method for eye-gaze tracking under the head-mounted device.
Owner:SOUTH CHINA UNIV OF TECH
Combined additive and subtractive manufacturing machine tool
ActiveCN104384936AGuaranteed complexityGuaranteed processing effectOther manufacturing equipments/toolsUltrasonic vibrationMachining process
The invention belongs to the field of machine tool design, and relates to a combined additive and subtractive manufacturing machine tool, which comprises a body, a workbench, a main shaft, a numerical control system, a subtractive machining module and an additive manufacturing module. According to the combined additive and subtractive manufacturing machine tool, the additive manufacturing module is controlled by the numerical control system to form a basic structure of a required part on the workbench, then the subtractive machining module is controlled by the numerical control system to perform subtractive machining on the basic structure obtained by additive manufacturing, a function of applying ultrasonic vibration to a cutter and a gas cooling function are realized in a subtractive machining process, and the whole combined additive / subtractive manufacturing process is finally implemented. The combined additive and subtractive manufacturing machine tool can be used for realizing the efficient and precise combined additive and subtractive manufacturing of the component, the manufacturability of a complex part is improved, the production cycle is shortened, and the manufacturing accuracy of the complex part is ensured.
Owner:DALIAN UNIV OF TECH
Road matching method based on fusion of probe vehicle movement track and electronic map
InactiveCN104634352AGood precisionReduce complexityInstruments for road network navigationDependabilityMatching methods
The invention relates to a road matching method based on the fusion of a probe vehicle movement track and an electronic map. The method is characterized in that an urban road network is divided by adopting a mesh division technology, so that the road section search complexity can be greatly reduced; a map matching method fusing a three-section matching concept of reference historical data and prospective data and an improved weight model concept is adopted for overcoming the weaknesses by acquiring strong points, the matching degree calculated by adopting the weight model is adopted as the evidence, and the three-section matching concept is used for making the decision, so that the reliability of the decision evidence and the reasonability of a result decision can be improved, and the relatively high matching precision can be achieved by virtue of the minimum complexity.
Owner:JILIN UNIV
Method and device for decoding iterated internal code and evaluating channel for orthogonal frequency division multiplexing system
ActiveCN101605120ACircular Convolution AccurateCircular convolution is accurateMulti-frequency code systemsOrthogonal multiplexTime domainCoding decoding
The invention discloses a method and a device for decoding an iterated internal code and evaluating a channel for an orthogonal frequency division multiplexing system. The iterating method comprises the following steps: at a transmitting end, carrying out internal code encoding and intraframe interleaving by a code with a long short code; at a receiving end, calculating circular convolution of an OFDM time domain data block and an evaluation value of channel time domain impulse response based on an initial evaluation value of the channel time domain impulse response; completing constellation de-mapping according to the channel evaluation and the result of circular convolution to acquire bit soft information; carrying out intraframe de-interleaving and internal code decoding on the bit soft information to acquire decoded bit soft information, carrying out intraframe interleaving on the decoded bit soft information, and remapping the constellation; and updating the evaluation value of the channel time domain impulse response according to the remapped result, and carrying out channel evaluation post-treatment. The method and the device can improve channel evaluation precision, and reduce system error rate, thereby improving system performance, in particular mobile performance, and ensuring complexity and controllable time delay of the system.
Owner:TSINGHUA UNIV
Method and equipment for testing compatibility after upgrading of system
ActiveCN102045191AGuaranteed randomnessGuaranteed complexityData switching networksTest efficiencyComputer compatibility
The embodiment of the invention relates to a method and equipment for testing compatibility after upgrading of a system. The method comprises the following steps of: before the system is upgraded, recording and storing a test case before upgrading of the system, date before testing of a use case, and a test result; after the system is upgraded, performing use case playback testing according to the test case before upgrading of the system, the date before testing of the use case, and the test result which are recorded and stored before the system is upgraded to obtain a use case playback result after upgrading; and judging the compatibility after upgrading of the system according to the consistency between the use case playback result and the recorded and stored test result. In the invention, various test scenes before upgrading of the system are recoded and are played back after upgrading, data is not needed to be constructed in advance, randomness and complexity of the use case can be guaranteed, the automation degree of a test is improved, and the test efficiency is effectively improved.
Owner:HUAWEI TEHCHNOLOGIES CO LTD
Solar and industrial waste heat cogeneration system
ActiveCN102080636AAvoid complexityGuaranteed complexityFrom solar energyEnergy industryCogenerationRecuperator
The invention discloses a solar and industrial waste heat cogeneration system, in particular to a Rankine cycle system for assisting industrial exhaust heat generation by utilizing a solar thermal collector. In the solar and industrial waste heat cogeneration system, a solar thermal collector, an intermediate heat exchanger and a work medium pump are sequentially connected in series to form a cycle; and the intermediate heat exchanger, an exhaust heat boiler, a steam drum of the exhaust heat boiler, a steam turbine, a power generator, a condenser, a deaerator, a water feeding pump and other equipment form the Rankine cycle generation system. A single pressure system or dual-pressure system can be adopted according to different parameters and different forms of the steam turbines, wherein in the single pressure system, the intermediate heat exchanger is used as the evaporator of the exhaust heat boiler and integrated with the exhaust heat boiler system for jointly producing superheated steam working medium; and in the dual-pressure system, the intermediate heat exchanger and a flash evaporator are used as independent equipment to be integrated with the exhaust heat boiler system. The system provided by the invention is beneficial to increasing the generated energy of generator sets for industrial exhaust heat generation, reducing the influence of the fluctuation of industrial exhaust heat to the generated energy, and simultaneously reducing the investment to simple solar thermal generation.
Owner:NANJING KESEN KENEN ENVIRONMENT & ENERGY
Channel estimation method, device and receiver
InactiveCN101958854AGood estimateEfficient estimationTransmitter/receiver shaping networksEstimation methodsCarrier signal
The invention is applied to the technical field of wireless communication, and provides a channel estimation method, a channel estimation device and a receiver. The method comprises the following steps of: calculating a channel frequency-domain response initial estimation valve of a subcarrier in which a received pilot signal is by a least square estimation algorithm; interpolating a data subcarrier between every two adjacent subcarriers and calculating a channel frequency-domain response interpolation estimation value of the interpolated data subcarrier; filtering the channel frequency-domain response initial estimation valve and the interpolation estimation value; and outputting the filtered channel frequency-domain response initial estimation valve and the interpolation estimation value. In the method and the device, when the channel frequency domain response interpolation estimation value of the interpolated data subcarrier is calculated, the quasi-real-time tracking and simple, efficient and accurate channel estimation of a wireless communication time-varying channel are realized by adopting the technology of origin shifting, quadrant-based phase adaptation, polar rotation route selection and the like, so high channel estimation performance can be achieved and simultaneously the algorithm complexity proximate to that of a linear interpolation method is still maintained.
Owner:NEW POSTCOM EQUIP
Dynamic path generation method directed at indoor navigation
ActiveCN105066997AIncrease flexibilityThe underlying connectivity graph is accurateNavigational calculation instrumentsTime dynamicsFingerprint
The invention discloses a dynamic path generation method directed at indoor navigation. The dynamic path generation method can provide real-time dynamic navigation path for indoor navigation service. A door state trigger defined in the invention comprises a fingerprint sensor and a smog sensor; and a variety of dynamic semantic information capable of influencing indoor topological structure can be captured through the door state trigger, so dynamic updating of an indoor topological network is realized. A corridor dividing method provided by the invention divides a corridor into a group of spatial units, and virtual doors are additional arranged among the spatial units for connection of the spatial, which is favorable for providing more accurate indoor navigation path. According to a network extension planning method utilized in the invention, a search tree generated in previous iteration is updated through real-time positional information and the dynamic topological network during path calculation, and eventually, navigation path is directly obtained through the search tree; so recalculation during each path planning is avoided, and temporal and spatial complexity during dynamic path planning is reduced.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
Septin 9 gene methylation detection method and kit
PendingCN110305940AHigh detection sensitivityGood specificityMicrobiological testing/measurementFluorescenceEnzyme
The invention provides a Septin 9 gene methylation detection kit. The kit comprises at least one of the following three groups of specific primers and probes aiming at the detection of Septin 9-v2 exon methylation, SEQ ID NO.5-SEQ ID NO.7, SEQ ID NO.8-SEQ ID NO.10, and SEQ ID NO.11-SEQ ID.13. The invention further provides a Septin 9 gene methylation detection method and a sample pretreatment method. The Septin 9 gene methylation detection method comprises the following steps of TET enzyme oxidation; pyridine borane reaction; and multiple fluorescence PCR reaction. The kit and the detection method have the advantages of high detection sensitivity, good specificity and high detection flux.
Owner:SUREXAM BIO TECH
Data transmission method and apparatus
ActiveCN101425840AGuaranteed system performanceGuaranteed complexityRadio transmission for post communicationWireless communicationData transmissionComputer science
The embodiment of the invention discloses a method for data transmission, which comprises the following steps: the length of an UpPTS in a special zone is set; and the UpPTS is used for data transmission. The embodiment of the invention also discloses a device for data transmission, which comprises an UpPTS length setting unit used for setting the UpPTS length and a data transmission unit used for the data transmission by the UpPTS. The embodiment of the invention adopts a flexible configuration method for the special time slot by setting the length of the UpPTS and then utilizing the UpPTS to transmit the data. On the foundation of guaranteeing the compatibility with aTD-SCDMA system, the performance of the special time slot is developed. On the premise of guaranteeing the system performance and complexity, the development of the UpPTS function is realized, and the data transmission can be carried out.
Owner:DATANG MOBILE COMM EQUIP CO LTD
Encryption/decryption function generating method, an encryption/decryption method and related apparatuses
ActiveCN106663387AIncreased complexityGuaranteed complexityMultiple keys/algorithms usageEncryption apparatus with shift registers/memoriesComputer hardwareUser input
An encryption / decryption function generating method, an encryption / decryption method and related apparatuses, which can ensure the confidentiality of make a key used in a white-box encryption and decryption function when a white-box encryption and decryption function generating algorithm is disclosed. The method includes: receiving a random seed and an original key that are input by a user; generating, according to the original key, a round key required for R-round iterative computing; generating, according to the random seed, an affine expansion mask required for the R-round iterative computing and random disturbance data required for the R-round iterative computing; and generating an encryption / decryption function.
Owner:HUAWEI INT
Method and apparatus for controlling scanning of mosaic sensor array
InactiveCN1766672AGuaranteed flexibilityGuaranteed complexityElectronic switchingMechanical vibrations separationSensor arrayUltrasonic sensor
Owner:GENERAL ELECTRIC CO
Efficiently-calculated on-line/off-line digital signature method
InactiveCN102769530AEnsure safetyGuaranteed complexityPublic key for secure communicationUser identity/authority verificationComputer securityThird party
The invention provides an efficiently-calculated on-line / off-line digital signature method. A signature public key is recorded as U=g<-w>; a signature private key is recorded as w belong to Z*q; f and h:{0, 1}*->Zq are two transfer functions; and m is information to be signed. A signer acquires e=h(m), r belong to Zq and d=f(g<r>, calculates z=r+dwe belong to Zq, and takes (d, z) as the signature of m. The signature effectiveness is validated through the calculation of f(g<z>U<de>)=d. The signer can pre-calculate {r, d, dw} off line. If knowing m and d in advance, a signature verifier can calculate U<de> off line. d is either stored by the verifier in secrecy, or stored publicly by a third party except the signer and the signature verifier.
Owner:赵运磊
Software dynamic behavior modeling method and device based on control flow analysis
ActiveCN108628600ARealize control structure identification functionScientific descriptionSoftware designSoftware metricsSoftware systemSequence database
The invention discloses a software dynamic behavior modeling method and a software dynamic behavior modeling device based on control flow analysis. This method traces the function execution trajectoryof software dynamic execution process, establishes a software dynamic behavior sequence database described by function execution; analyzes the software dynamic behavior sequence, extracts the function call logic relation and the function call statistics to form function call control flow information; and abstract the software system into a multi-label dynamic software behavior network model according to the function call control flow information. From the angle of control flow analysis and statistics, combined with the theory method of complex network, the dynamic calling relation of the software function is analyzed in a more comprehensive and detailed way and the software behavior can be expressed and measured in a more comprehensive and scientific way.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY +1
Method adjusting color of navigation map according to luminance of screen
ActiveCN103474043ADisplay content is clearReduce operational complexityStatic indicating devicesNavigation systemVector diagram
The invention provides a method adjusting the color of a navigation map according to the luminance of a screen. Backlight of a navigation system is manually set through software and can also be controlled through a light sensation sensor. The software or the light sensation sensor changes the duty ratio of PWM to form different kinds of LCD backlight control voltage and generate the luminance of different degrees, so that the display luminance of the screen is controlled. According to the navigation software, the luminance information of an LCD is obtained, when the map is drawn, a vector diagram engine can generate the background color corresponding to the backlight luminance, an electronic map is generated, and the map background color on the LCD screen can completely adapt to the backlight luminance, so that contents are displayed well and clearly. The method has the advantages that the operation complexity of the navigation system is lowered, and navigation equipment can be more intelligent and humanized. In the driving process, the problem of eye fatigue caused by the excessively high luminance of the LCD is solved, and the comfort to use the navigation map in the driving process and the driving safety are improved.
Owner:SHENYANG MXNAVI CO LTD
Antenna beam switching sensing system and method and mobile terminal
ActiveCN109391308AShorten the sensing timeAssurance of Accuracy and CompletenessSpatial transmit diversityAntenna detailsRadio frequencyBeam switching
Owner:VIVO MOBILE COMM CO LTD
Software authorization method
InactiveCN106874714AImplement authorization protectionDoes not affect productivityProgram/content distribution protectionProduction linePassword
The invention discloses a software authorization method. Software is activated through a password when being used for the first time, a license file is generated after software activation succeeds, and the valid period or residual effective day number of the software is recorded in the license file; in the valid period or when the residual effective day number is greater than 0, all the copies of successively activated software can be started run normally in an activation-free mode; after the valid period or when the residual effective day number is equal to 0, the software is needed to be activated. By adopting the technical scheme, the valid period of the software is prolonged through the password at a mother disk manufacturing stage, the valid period or residual effective day number of the software is limited through the license file at a software testing stage, authorization protection of the software is achieved, and the production efficiency of the software is also not affected. The method especially adapts to the production characteristic of the production line testing process based on general software authorization protection, and it is achieved that activation-free running of any copy can be achieved in the valid period after primary activation.
Owner:湖南长城银河科技有限公司
Compression method and compression device of neural network model, storage medium and equipment
ActiveCN111709516AGuaranteed accuracyImprove accuracyNeural architecturesEnergy efficient computingData setAlgorithm
The invention discloses a convolutional neural network model compression method based on transfer learning. The compression method comprises the steps of obtaining a pre-trained transfer learning model; performing compression processing on each convolution layer of the transfer learning model according to a preset compression ratio to obtain a first target network model; performing transfer learning on the first target network model by using the target image data set to obtain a first compressed target model; according to a predetermined rule, selecting a part of convolution layers in the first compression target model for compression processing to obtain a second target network model; and performing transfer learning on the second target network model by using the target image data set toobtain a second compressed target model. Advantages of transfer learning and convolution compression are complemented, on the premise that high accuracy is guaranteed, model complexity is reduced, operation speed is increased, compression processing is performed on part of convolution layers, the model complexity can be further reduced, and sudden drop of the model accuracy is avoided.
Owner:SHENZHEN INST OF ADVANCED TECH
User verification method and user verification system
ActiveCN104935436AReduce overlap rateGuaranteed complexityUser identity/authority verificationDigital data authenticationUser verificationChinese characters
The invention provides a user verification method and a user verification system, which is applied to a network system composed of a client and a server. The user verification method comprises the steps of displaying a verification code image when the user verification is required, wherein the verification code image comprises at least one Chinese character in the horizontal direction and at least one Chinese character in the vertical direction; receiving the Chinese character in the horizontal direction from a first input field, and receiving the Chinese character in the vertical direction from a second input field; and conducting the user verification according to the received Chinese character in the horizontal direction and the received Chinese character in the vertical direction. During the user verification process, when the received Chinese character in the horizontal direction and the received Chinese character in the vertical direction are completely the same with the Chinese character of the verification code image in the horizontal direction and the Chinese character of the verification code image in the vertical direction, the user verification is approved successfully. Due to the adoption of the technical solution of the present invention, whether the verification object is a person or a computer can be judged more accurately.
Owner:上海同道信息技术有限公司
Endoscopic robot based on lead screw active leg extension and contraction device
The invention discloses an endoscopic robot based on lead screw active leg extension and contraction device. The device comprises a robot body, a control mechanism and a leg structure. The robot bodyis provided with a control mechanism, and the control mechanism is provided with a camera and a motor. The output shaft of the motor is fixedly connected with a leg structure, and the control mechanism is electrically connected to a control terminal of the peripheral device. The endoscopic robot based on lead screw active leg extension and contraction device can make the robot well in the premiseof ensuring complexity and operating time through the improvement of the leg structure and the cooperation of the camera and the motor, avoiding obstruction of the structure of the lumen tube and somelesions during the advancement process.
Owner:HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
Low-complexity video signal coding processing method
ActiveCN109769119AGuaranteed complexityReduce complexityDigital video signal modificationSignal codingLow complexity
The invention discloses a low-complexity video signal coding processing method. The method comprises the steps of S1, obtaining a code CU; S2, judging whether the LID of the current position is greater than 20 or not, and if yes, executing a step S5; if not, extracting a feature vector xt of the current code CUt, and then executing the step S3; step S3, judging a division decision of the code CUtby using a decision maker ActNN; s4, defining a threshold value of u (t), if u (t) is greater than or equal to Phi, determining that the division decision of the current code CUt is' stop division ',terminating the rate distortion cost RD cost comparison process of the current code CUt in advance, and executing the step S2 after adding 1 to the LID; if u (t) is smaller than Phi, the division decision of the current code CUt is' continuous division ', the code CUt depth subjected to rate distortion cost RD cost comparison is increased by 1, and the step S2 is executed in sequence; s5, finishing division. According to the invention, the coding complexity can be effectively reduced, and the coding speed is improved.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
Maneuvering target multi-frame detection tracking method based on linear pseudo-measurement model
ActiveCN111257865AResolving Maneuvering Target Model MismatchesImprove detection performanceComplex mathematical operationsRadio wave reradiation/reflectionComputer visionDetection performance
The invention discloses a maneuvering target multi-frame detection tracking method based on a linear pseudo-measurement model, is applied to the technical field of radar target detection and tracking,and aims to solve the problems that a traditional maneuvering target multi-frame detection tracking method based on motion boundary constraint is low in tracking precision and poor in detection performance and the huge calculation cost problem of maneuvering target tracking by increasing the dimensionality of the search state space in the prior art. Historical information is used as a priori multi-stage joint optimization idea, firstly, a linear pseudo-measurement model is established according to historical information to estimate the motion information amount of a high-order target; then, amaneuvering target state transition model is introduced to model target maneuvering characteristics, then, the size of the multi-frame accumulation possible state transition interval is adaptively adjusted according to the established target maneuvering model, and finally a complete target detection tracking trajectory is outputted.
Owner:UNIV OF ELECTRONIC SCI & TECH OF CHINA
Hair simulation method and system
ActiveCN111583367AGuaranteed complexityMotion real timeDetails involving 3D image dataAnimationMedicineClassical mechanics
The invention provides a hair simulation method and system in the field of computer graphics, and the method comprises the following steps: S10, setting an initial state of a hair style, and dividingthe hair style into a fixed area and a motion area ; S20, generating a mapping skeleton of the hair based on the hair trend of the fixed area and the hair trend of the motion area; and S30, setting motion parameters of the hair, and simulating the motion of the hair by utilizing the motion parameters and the mapping skeleton. The invention has the advantage that real-time simulation of motion of complex hair styles is realized.
Owner:构范(厦门)信息技术有限公司
Data synchronous processing method and data synchronous processing device
InactiveCN105451210AGuaranteed complexityFlexible adjustment performanceSynchronisation arrangementNetwork topologiesData synchronizationVirtualization
The present invention discloses a data synchronous processing method and a data synchronous processing device. The data synchronous processing method comprises: sending signaling and / or a forwarding packet to (M+N) subordinate TPs (Transmission Point); performing downstream data synchronism with the subordinate TP according to the sent signaling and / or the forwarding packet, wherein M subordinate TPs and M principal TPs are subjected to data synchronism at a PDCP (Packet Data Convergence Protocol) layer, N subordinate TPs and N principal TPs are subjected to data synchronism at the PDCP / RLC (Radio Link Control) / MAC (Medium Access Control) layer, M>=0, N>=0, and M+N>=1. According to the invention, the problem is solved how to control the overhead of data synchronism based on the guarantee of virtualization effect of a cell, so that the number of layers of data synchronism may be flexibly regulated and controlled according to the requirements of cell virtualization; and moreover, the overhead of data synchronism may be controlled based on the guarantee of virtualization effect of the cell.
Owner:ZTE CORP
Fluorescence PCR method for diagnosis of human papilloma viral infection
PendingCN101251469ALow efficiencyReduce complexityMicrobiological testing/measurementMaterial analysis by optical meansForward primerHuman papilloma virus infection
Owner:GENETEL PHARMA SHENZHEN
MIMO wireless communication system, MIMO signal detecting device and signal detecting method
ActiveCN104796239AReduce complexityGuaranteed complexityError detection/prevention using signal quality detectorBaseband system detailsCommunications systemEngineering
The invention provides an MIMO wireless communication system, an MIMO signal detecting device and a signal detecting method, wherein the MIMO signal detecting device comprises a search tree conversion unit, a search unit, a node selection unit, a node calculation unit and a three shearing / updating unit. Based on an optimal colored channel noise model, the complexity of the MIMO signal detecting device of the invention is relatively low while the performance thereof is almost equal to the performance of the ergodic search. The signal detecting method of the invention reduces search complexity under the condition of considering channel estimation error and ensures performance of communication simultaneously.
Owner:SUZHOU NG NETWORKS
Secure multicast method for overlay network at low expenses
ActiveCN103997463AImprove distribution efficiencyImprove securityData switching networksRound complexitySystem stability
The invention discloses a secure multicast method for an overlay network at low expenses, and relates to the field of data communication technology, in particular to secure and efficient data transmission of the overlay network. A multicast tree is constructed by the adoption of a bottom-up hierarchical clustering strategy, the number of child nodes of a cluster head is reduced so that the complexity of a control algorithm for maintaining the topological relation through all nodes can be a constant, and it is ensured that node expenses cannot be increased along with increase of multicast scale; a self-balancing binary tree algorithm is adopted in a cluster to construct a multicast distribution path, system stability is guaranteed, and meanwhile the probability of data delay is reduced; a secret key distinguishing strategy is adopted during data distribution, different secret key strategies are adopted for the zeroth layer of nodes and the non-zeroth layer of nodes for encryption transmission of data, and data security is guaranteed.
Owner:PLA UNIV OF SCI & TECH
CT image skeleton segmentation method and device based on convolutional neural network
PendingCN113077418AFast splitImprove accuracyImage enhancementImage analysisComputer visionImaging data
The invention discloses a CT image skeleton segmentation method and device based on a convolutional neural network, and relates to the technical field of computer vision and deep learning. The method comprises the following steps: acquiring CT image data and inputting the CT image data into a skeleton recognition model; performing convolution operation processing on the CT image data to obtain a feature output graph C1; performing multiple composite operation processing on the feature output graph C1 through a bottleneck module to obtain a feature output graph CN; performing convolution operation processing on the feature output graph CN to obtain a feature output graph CN + 1; inputting the feature output graph CN + 1 into a plurality of pooling cores for average pooling operation to obtain a feature output graph PL; performing stacking operation on the plurality of feature output graphs PL to obtain a fusion feature PF1; performing stacking operation on the fusion feature PF1 and a feature output graph CN + 1 to obtain a fusion feature PF2; and carrying out convolution operation on the fusion feature PF2 to obtain a segmentation image S. According to the method, skeleton segmentation can be accurately and quickly performed on the CT image, the time cost is saved, and the requirement on the GPU is not high.
Owner:心医国际数字医疗系统(大连)有限公司
Abstract picture direction determination method based on HSI-LBP features
ActiveCN110956184AReliable detectionGuaranteed complexityCharacter and pattern recognitionColor imageImaging processing
The invention belongs to the technical field of image processing, and particularly relates to an abstract picture direction determination method based on HSI-LBP features. The problem of judging the correct hanging direction of an abstract picture under the condition that no clear direction prompt exists is solved. Specifically, the method comprises the steps: converting a color image of an abstract picture into an HSI model from an RGB model, and averagely dividing the image into a plurality of sub-blocks after the image is rotated by four angles; extracting a local binary pattern LBP descriptor of each sub-block in an H-S mode, and combining LBP coding histograms of peripheral sub-blocks to serve as image features; finally, carrying out automatic direction judgment through a support vector machine (SVM). The method can effectively improve the direction recognition accuracy of the abstract picture, and provides a new research perspective for the research of the abstract picture.
Owner:SHANXI UNIV
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