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94results about How to "Solve the inaccurate identification" patented technology

Method and system for network equipment identity recognition

The invention provides a method for network equipment identity recognition. The method for the network equipment identity recognition includes the following steps: receiving visit requests sent by network equipment through a webpage browser; searching corresponding webpage codes and collection codes according to an address of a target webpage and returning the codes to the webpage browser; receiving an attribute vector set collected from the network equipment and sent by the collection codes through the request of hyper text transport protocol (HTTP); searching attribute groups matched with the attribute vector set from a preset attribute bank based on the attribute vector set; carrying out similarity computation on the attribute vector set and the searched attribute groups and selecting the attribute group which has high similarity with the attribute vector set; and comparing the highest similarity value with a preset new equipment threshold value and an old equipment threshold value and determining the type of the network equipment according to comparison results. The invention further provides a network equipment identity recognition system for realizing the method. The method and the system for network equipment identity recognition can reduce occupation on network equipment resources, and improve visit speed and recognition accuracy.
Owner:ALIBABA GRP HLDG LTD

Method for identifying untypical wave crests and wave troughs of pulse wave

InactiveCN102247129AAffect the correct identificationFast recognitionCatheterPulse waveVertical coordinate
The invention discloses a method for identifying irregular wave troughs of a pulse wave signal, belonging to the technical field of pulse wave signal identification. The method comprises the following steps of: identifying one section of input pulse signal and extracting one typical pulse wave period; intercepting data of a declining branch part in the typical period, and carrying out vertical coordinate transformation to convert the traditional stepped untypical wave crests and wave troughs into typical wave crests and wave troughs and further identify the positions of maximum values and minimum values of the transformed data; and finally, amending the positions of the identified maximum values according to data which are not transformed, and marking the positions of the finally-identified wave crests and wave troughs of pulse wave and outputting the positions for analysis. According to the method disclosed by the invention, the missed identification and mistaken identification of a pulse condition analytical instrument on untypical wave crests and wave troughs can be solved, the stepped untypical wave crests and wave troughs can be effectively identified and new hardware equipment is prevented from being modified or added; and the method is particularly suitable for the traditional pulse condition analysis instrument.
Owner:XIDIAN UNIV

Power equipment image recognition method and device based on transfer learning and neural network

The embodiment of the invention discloses a power equipment image recognition method and device based on transfer learning and a neural network. The method comprises the steps of acquiring a simulation image data set of target power equipment to serve as a first training sample, the simulation image data set comprises simulation images of the target power equipment and corresponding classificationlabels, wherein the number of models of each type of target power equipment is multiple; obtaining an actual image data set of the target power equipment as a second training sample, wherein the actual image data set comprises an actual image of the target power equipment and a corresponding classification label; training a pre-constructed convolutional neural network model by using the first training sample to obtain a first target convolutional neural network model; training the first target convolutional neural network model by using the second training sample to obtain a second target convolutional neural network model; and inputting the image of the to-be-identified power equipment into the second target convolutional neural network model for identification. And the accuracy of powerequipment image identification is improved.
Owner:台州宏创电力集团有限公司

First-order sea clutter detection method based on least squares approximation

Disclosed is a first-order sea clutter detection method based on least squares approximation. The invention relates to a first-order sea clutter detection method, and aims to solve the problem that the found Bragg peak position is inaccurate and the false alarm rate is high in the prior art. The method comprises the following steps: calculating the theoretical Bragg frequency fB based on the working frequency f0 of radar, defining a noise zone on each sea element, and calculating the threshold of each sea element; detecting sea area sea state data according to the radar, determining the maximum radial velocity Vm of ocean current, and calculating the maximum Bragg frequency offset Delta fm; determining a search scope according to Delta fm and fB, determining a suspected point of the Bragg peak, confirming the threshold of the amplitude of the suspected point, and judging whether the current sea element is effective; for the effective sea elements, taking the neighboring points of an appropriate number of suspected points to form a point set, and acquiring the approximation function of the point set using a least squares approximation method; and finally, taking the peak point of the approximation function as a Bragg peak. The first-order sea clutter detection method is applied to the field of high-frequency ground wave radar detection.
Owner:HARBIN INST OF TECH

Sign-in method based on multi-mode recognition

The invention relates to a sign-in method based on multi-mode recognition. The sign-in method comprises the steps of: acquiring face video images and fingerprint information of identity information recognizing people; automatically detecting infrared rays on the surface of human bodies by means of a pyroelectric infrared sensor which is arranged on the surface of sign-in equipment, and controlling the sign-in equipment to turn on by the pyroelectric infrared sensor when staff enters a sign-in sensing region; selecting the face video image under the appropriate illumination intensity background according to the illumination intensity during sign in, matching the selected face video image with acquired facial image data, and matching fingerprints of the staff with acquired fingerprint information, and calculating a matched-degree score result A; and selecting the face video image under the appropriate illumination intensity background again according to the illumination intensity during sign in, matching the selected face video image with the acquired facial image data, and matching the fingerprints of the staff with the acquired fingerprint information, and calculating a matched-degree score result B. The sign-in method has the advantages of accurate judgment, good reliability, low price and wide application.
Owner:济源维恩科技开发有限公司

Method and device for judging connectivity of sand bodies between injection and production wells of low-permeability reservoir

The invention relates to a method and a device for judging the connectivity of sand bodies between injection and production wells of a low-permeability reservoir. The method comprises the steps of: fitting to obtain a starting pressure gradient permeability curve according to a starting pressure gradient corresponding to the core test permeability of a target region; taking a permeability value corresponding to the maximum variation amplitude of the starting pressure gradient along with the variation of the permeability on the curve as the limit water injection permeability, and taking the permeability value corresponding to the maximum curvature on the curve as the free-flow water injection permeability; and filtering a sandstone section interpreted by the target region by adopting the permeability greater than or equal to the ultimate water injection permeability and less than or equal to the free-flowing water injection permeability to obtain a longitudinal sand body connection diagram and a planar sand body distribution diagram between the injection and production wells, and judging the connectivity between the injection and production wells in the research region. According tothe method and the device, a rock core starting pressure gradient experiment is associated with the dynamic connectivity of the sand bodies between the oil-water wells of the oil reservoir, and the originally explained sandstone section is subjected to secondary filtering explanation by adopting the permeability within a certain range, so that the connectivity between a water injection well and each oil production well is quantitatively judged.
Owner:CHINA PETROLEUM & CHEM CORP +1

Accurate inclination character recognition method and system based on robustness template

The invention discloses an accurate inclination character recognition method based on a robustness template. The method comprises the following steps: establishing a sample image data set; establishing a plurality of robust character templates corresponding to the character categories; performing multi-scale construction on the to-be-recognized inclination character image block and each robustness character template; calculating the similarity between the to-be-identified dip angle character image block under each scale and each template character image block; determining an initial character category of the to-be-recognized dip angle character image block according to the similarity value under each scale; filtering the inclination character image block to be identified and the robustness character template of the initial character category thereof by using a convolution kernel; calculating and filtering the similarity of the to-be-recognized dip angle character image block and the filtering template character image block; and determining the character type of the to-be-recognized inclination character image block. The invention discloses an accurate inclination character recognition system based on the robustness template. According to the invention, the accuracy of inclination character recognition is effectively improved.
Owner:北京惠朗世纪科技有限公司
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