157results about How to "Effective resolution" patented technology

The invention discloses a human body target identifying and tracking method based on stereoscopic vision technology. The method comprises the following steps: simultaneously obtaining pictures of the same scene from two different angles by two cameras to form a stereo image pair; determining internal and external parameters of the cameras by marking the cameras, and establishing an imaging model; adopting a window-based matching algorithm to create a window with a to-be-matched point of one image as the center, creating the same sliding window on the other image, sequentially moving the sliding window along an epipolar line with a pixel point as the unit, calculating a window matching degree, finding an optimal matching point, obtaining three-dimensional geometrical information of a target by the parallax principle, and generating a depth image; distinguishing head and shoulder information by using a one-dimensional maximum entropy threshold segmentation method and gray features; and tracking the human body target by using an adaptive gate tracking method, and obtaining a target track. By adoption of the human body target identifying and tracking method based on the stereoscopic vision technology disclosed by the invention, accurate identification of the human body target and tracking counting are realized, background noise is effectively removed, and the interference of the environment is avoided.

The invention provides a ship radiation noise source distinguishing method based on a super directivity small-bore cylindrical array so as to realize ship radiation noise source distinguishing through the super directivity small-bore cylindrical array. All array elements of a measurement array are used for receiving correlation properties between ambient noise signals to design a super directivity weight vector so as to form a narrow beam width and high gain processing system; on the assumption of a six-lightspot target model, a ship radiation noise source distinguishing result based on the super directivity small-bore cylindrical array is obtained through computer simulation; a comparison simulation study with conventional beam forming proves the advantages of the ship radiation noise source distinguishing method based on the super directivity small-bore cylindrical array in terms of ship radiation noise source distinguishing.

The invention discloses a shortwave transmitting antenna three-dimensional directional diagram aerial mobile measurement system and method. The system comprises a field intensity measurement system which is composed of a loop antenna and a field intensity instrument host and an unmanned aerial vehicle platform and other parts. Computation is performed by a field intensity signal preprocessing module, a standard directional diagram computing submodule, a spatial spectrum processing submodule, a digital beam forming submodule and a transmitting antenna calibration factor computing submodule. The omnidirectional loop antenna is mainly adopted to measure field intensity signals, acquire and store the field intensity signals and preprocess the field intensity signals, then the signals are further processed through the spatial spectrum estimation technology, and finally testing is performed on the unmanned aerial vehicle platform. The index is provided for assessment of a shortwave transmitting antenna directional diagram, and online automatic monitoring of the antenna directional diagram can be realized without influencing the real-time performance and the effectiveness of the shortwave transmitting antenna so that the system and the method have the characteristics of being simple in equipment and convenient to operate.

A detection device for internal defects of an optical element, comprising: a stage, an illumination system, and an imaging system; wherein, the position of the illumination system relative to the stage is set in the following manner: when the optical element to be tested is placed on the stage After being mounted, the illumination beam emitted by the illumination system can irradiate the surface of the optical element in a normal incidence mode; the imaging system is arranged outside the side of the optical element on the stage, and can obtain the illumination beam emitted by the illumination system on the optical element. A 2D image of an illuminated section formed in the thickness direction. The device can be used to detect the internal defect of the optical element, and can also distinguish the surface defect from the internal defect. The invention also provides a detection method of the optical element.

The invention discloses a detection method of image sensing of a bad pixel. Differences between a pixel value to be detected and a plurality of adjacent pixel values are inspected. The continuity of the pixel value to be detected and a plurality of adjacent same color pixel values in a specific direction is inspected. According to the specific direction, the smoothness of the pixel value to be detected in the specific direction is inspected.

The invention relates to a high sensitivity polarization laser radar system based on Gm-APD, relates to the laser radar technology field and solves problems of incapability of detecting weak signals and incapability of distinguishing a target from a shielding object in the prior art. A modulation pulse laser device is driven by a pulse code generator to generate a laser signal pulse sequence, the laser signal pulse sequence is modulated through a polarizer and a first one-quarter wave plate, and the target is irradiated through a scanner; a returned laser signal through the scanner sequentially realizes incidence to a narrowband optical filter, a second one-quarter wave plate and a polarization splitter, the incident laser signal is divided by the polarization splitter into two paths of laser signals, the two paths of laser signals are respectively received by two single-photon detectors, detection signals outputted by the two single-photon detectors are inputted to a signal processing module, and the signal processing module is used for carrying out correlation of a reference signal and the two paths of detection signals to acquire a distance, intensity and a polarization degree of corresponding pixel points on a detected object. The method is advantaged in that the method is suitable for detecting the weak signals.

The invention relates to a dynamic tracking method of the direction of arrival of coherent signals under an impulsive noise environment. The dynamic tracking method comprises the steps that signal sampling data are acquired; classifying unification preprocessing is conducted on a received signal data vector; a uniform linear array is divided into a plurality of subarrays; a received data vector undergoing spatial forward backward smoothing is substituted into a PASTA algorithm to obtain signal subspace; a MUSIC algorithm is used for processing the data of the signal subspace, and the direction of arrival of object signals is acquired through spectral peak searching; a t is made to be equal to t+1, the angle of the direction of arrival of the signals with corresponding the beat number is obtained until the maximum beat number is reached, and DOA dynamic tracking of coherent signal sources under the impulsive noise environment is achieved. According to the method, a projection subspace approaching tracking algorithm is used, the signal subspace of incident signals can be tracked in real time, then a MUSIC method is used for conducting precise detection on the direction of arrival of the signals, the robustness of the method is high, and the tracking effect is good.

The invention discloses a kit for double-sandwich immunofluorescence quantitative detection of human anti-Mullerian hormone (AMH) on the basis of quantum dots and application thereof. The original kit contains an AMH protein standard substance, an ELISA plate coated with an AMH specific polyclonal antibody and a CdTe quantum dot labeled AMH monoclonal antibody. The detection antibody used in the kit is a CdTe quantum dot label for monoclonal antibodies, and can better remove background signals; the detection method is simple and convenient, and has high practicality; the detection result directly determined by a fluorescent ELIASA indicates that the emitted fluorescence has the advantages of narrow spectrum peak, weak autofluorescence and high sensitivity; the kit has the advantages of high fluorescence intensity and long stabilization time, and overcomes the actual states of low sensitivity and poor specificity in the traditional ELISA detection kit; and the kit can enhance the resolution, sensitivity and specificity of ovary reservation function detection.

The invention discloses a detection apparatus and method for pesticide residues in vegetable based on near infrared, fluorescence and polarization multi-spectrum. An electric control light source rocking arm and an electric control detection rocking arm are respectively fixed at two sides of the upper end of an electric control translation stage; the upper part of an electric control sample bench is used for placing a sample, and the lower part of the electric control sample bench is fixed on the electric control translation stage; an information acquisition unit comprises a halogen light source, an ultraviolet source, a multi-source spectrometer sensor assembly and a data acquisition card; a pesticide residue detection control device comprises a computer, a control module and a mode switch key; and the control module is connected with the computer, the data acquisition card and the mode switch key. The method provided by the invention makes a breakthrough to bottlenecks restricting traditional nondestructive detection technology in high-precision detection of pesticide residues and has the advantages of universality and accuracy. The varieties and contents of organophosphorus pesticide residues can be effectively distinguished based on corresponding near infrared spectral sensitive band, fluorescence spectral sensitive band, polarization angle combination and sensitive spectral band of each organophosphorus pesticide residue.

An ion mobility spectrometer includes a plurality of substrates defining a measurement region for receiving a singular laminar gas flow without any carrier or sheath gas. The measurement region includes an ionization region that is continuous with a detection region. An ionizing electrode, which may include a plurality of asymmetric electrodes, produces ions in the gas sample within the ionization region. The ionizing electrode may apply a time varying voltage to the gas sample to generate a time dependent ion production. A field generating electrode generates an electric field to deflect the ions in the gas sample, and a detection electrode array detects the deflected ions within the detection region. A controller is configured to determine ion species based on the detection of ions by the detection electrode array. The detection electrode array may include a plurality of detection electrodes, and the controller may be configured to differentiate ion species based on which ions are detected by which one of the detection electrodes

The invention discloses a method for mining and evaluating online monitoring data of an extra-high voltage power device. The method comprises a first step of cleaning online monitored repetitive data; a second step of cleaning online monitored abnormal data based on an association rule; and a third step of carrying out analysis evaluation on the quality of the cleaned online monitored data; judging whether the threshold values of validity, completeness, normativity and redundancy are met; if so, ending; and otherwise, returning to the second step again. The invention also discloses a system for mining and evaluating the online monitoring data of the extra-high voltage power device. The system comprises a repetitive data cleaning unit, an abnormal data cleaning unit and an analysis evaluation unit. The method and the system for mining and evaluating the online monitoring data of the extra-high voltage power device have the beneficial effects that the abnormal data can be distinguished efficiently as the association rule based abnormal data cleaning method is provided, and real-time monitoring and online checking and evaluation of the extra-high voltage online monitoring data are realized as a data quality evaluation system is set up.

The invention discloses a two-source two-energy linear security inspection CT device and a detection method thereof, wherein a ray generator and a data collector are connected with a control and image processing system, the ray generator comprises a high energy ray generator and a low energy ray generator, a high energy data collector and a low energy data collector are arranged correspondingly with the high energy ray generator and the low energy ray generator, the high energy ray generator and the low energy ray generator are horizontally arranged at the side surface of an object transmitter, which rays are cornered of 90 degrees. The invention can effectively recognize the matters of similar densities and different atom numbers, can quickly and accurately recognize suspected matters as well as obtain the sectional image and the three-dimension image of the suspected region of the object. The two-source two-energy linear security inspection CT device has simple structure and low production cost. The invention adopts reconstruction and fusion methods to analyze data and can effectively recognize the dangerous materials of objects.

The invention relates to a front-view intelligent anti-glare device of a vehicle and a manufacturing method of an anti-glare mirror thereof. The front-view intelligent anti-glare device of the vehicle is provided with a control device installed in the support and the anti-glare mirror. The output end of the control device is connected with the input end of the anti-glare device. The control device is provided with an MCU microprocessor, a light sensor, a power supply module and a power supply output control module. The light sensor is provided with a casing and a light sensing mechanism arranged in the casing. The light sensing mechanism is provided with a glare sensor and an environment light sensor. The input end of the MCU microprocessor is respectively connected with the output end of the environment light sensor, the output end of the glare sensor and the output end of the power supply module, and the output end of the MCU microprocessor is connected with the input end of a power supply control module. The output end of the power supply control module is used for being connected with the input end of the anti-glare mirror through an electrode. A monomer molecular coating is added for the anti-glare mirror. The front-view intelligent anti-glare device senses the intensity through the light sensor, the MCU microprocessor receives, processes and sends signals to eliminate glare influence, and the running safety is ensured.

The invention provides a wafer testing method. The wafer testing method carries out a test on a to-be-tested wafer respectively along two directions which are mutually perpendicular. When the wafer test is influenced by factors of the test itself, test results in different directions can present obvious distinguishable distributions, so that whether yield rate distributions are influenced by factors of the test itself can be identified directly according to the test results, and the production efficiency is substantially raised.

An improved servo system for galvanometers, scanners and similar devices which uses digital processing to increase the dynamic range and provide greater effective resolution. The system provides digital control of a reference point that directly influences the excitation, which in turn directly influences the gain of the circuit. A high and low resolution switching path is provided to optimize dynamic range. Wide angle torque compensation improves uniformity of response at large angular deflections from zero. Improved thermal protection allows safe operation near system thermal limits. A graphical user interface allows adjustments and changes response on the fly for tuning due to input conditions or user control.

The invention belongs to the field of power systems and discloses an artificial pollution accumulation characteristic testing system and an operating method thereof. The system comprises a wind source power section, a test section and an air duct diffusion and dust removal section which are communicated in sequence; the wind source power section is used for providing natural wind for the test section; the test section is used for simulating the pollution accumulation condition of an insulator of a power grid; the air duct diffusion and dust removal section is used for collecting dust and providing an air duct outlet; and the wind source powder section is provided with a base for supporting the testing system. The testing system is internally provided with a draught fan, a dust spreading device, the insulator and the like, so that the artificial simulation for the natural pollution accumulation conditions of the insulator in typical environments such as wind, rain, fog and the like and different pollution degrees in a laboratory is realized; compared with the traditional method for researching the natural pollution accumulation characteristic through circuit sampling, the operating method is time-saving and labor-saving, safe and reliable as well as wide in research range; and a research result has important significance for the operation maintenance as well as the design and selection of the insulator of a power transmission line.

The invention discloses a detection system and method of a semiconductor two-dimensional electron gas circular polarization spin photocurrent. The detection system comprises a monochromatic circular polarization light source, a semiconductor two-dimensional electron gas sample, a piezoelectric ceramic slice, a high-voltage alternating-current signal source, a lock-in amplifier and a resistor, wherein the monochromatic circular polarization light source illuminates the semiconductor two-dimensional electron gas sample in an inclining mode, the piezoelectric ceramic slice applies stress which changes periodically on the semiconductor two-dimensional electron gas sample, the high-voltage alternating-current signal source provides drive voltage for the piezoelectric ceramic slice, the resistor is connected with the semiconductor two-dimensional electron gas sample in series so that a loop can be formed, and the lock-in amplifier detects the current flowing through the resistor. The detecting system of the semiconductor two-dimensional electron gas circular polarization spin photocurrent is high in detection sensitivity, and improves the reliability and the superiority of the CPGE technology.

The invention discloses a human and vehicle infrared thermal image recognition method based on a convolutional neural network. After the training set is augmented, the established infrared thermal image human and vehicle identification network model W-DenseNet is trained; a test set is used for verification to obtain an infrared thermal image human and vehicle identification network model W-DenseNet with high identification degree; the infrared thermal image human and vehicle identification network model W-DenseNet extracts features of different levels of data layer by layer, so that a machineobtains higher level of feature expression and understanding ability, the target category is effectively distinguished, and the purpose of identifying people and vehicles is achieved. A weight parameter learning module is added, so that weight parameters learned in network structure training are weighted on the corresponding convolution layer input feature map, important features are enhanced, invalid features are suppressed, and more effective features are extracted, and therefore, the accuracy of the network model for identifying the gender of men and women in the infrared thermal image canbe improved.

The invention discloses an MIDI playing style automatic conversion system based on a recurrent neural network. The MIDI playing style automatic conversion system comprises an MIDI analysis module, a data preprocessing module, an auto-encoder module, a style network module and a music generation module. The MIDI analysis module is used for reading user input and combining the multi-track MIDI intoa single-track MIDI to serve as a music score; the data preprocessing module is used for extracting note features from the music score; the auto-encoder module encodes and decodes the note features; the style network module learns the playing style of the music score and predicts a strength vector; and the music generation module is used for configuring the strength vector predicted by the style network module for the music score and converting the strength vector into a music rich in expressive force. The automatic playing style conversion system disclosed by the invention meets personalizedrequirements of music enthusiasts and generates music of a playing style loved by a user; and meanwhile, the MIDI playing style automatic conversion system can be used as a tool for professionals, sothat the professionals can easily integrate new styles and creativity into composition work.

The invention relates a credit evaluation method of a user behavior in a Web environment, wherein the credit evaluation method comprises the following steps: 1) carrying out identity authentication on a user logging in a system based on the Web environment; 2) after the identity authentication of the user is successful, logging in the system to carry out a series of operations by the user, dividing user behavior evidence generated after the login of the user into three types, and sequentially storing these types of user behavior evidence in a static variable of a background in a continuous operation process of the user by the system; 3) continuously monitoring whether independent session allocated when the user logs in the system is destroyed through a session monitor by the system, and evaluating the credit of the current behavior of the user if the destruction is started; 4) using different nondimensionalization methods to respectively process the user behavior evidence with different dimensions in two-dimensional data stream to obtain a non-dimensional matrix; 5) obtaining a comprehensive weight set satisfying subjective and objective balance; and 6) using the comprehensive weight set and the non-dimensional evidence of the current user behavior to calculate a credit estimation value of the user behavior.

The embodiment of the invention discloses a processing method and device for preventing ping-pong handover, and the method comprises the steps: obtaining the current cell state information after receiving a handover completion message sent by a terminal, and obtaining the current first position information of the terminal if judging that the cell state information meets a preset condition; After ameasurement report sent by the terminal is received, if it is judged that the switching cell is in the penalty list of the target cell, current second position information of the terminal is obtained; Further determining the moving distance of the terminal; And if it is judged that the moving distance is within the preset range, not allowing the terminal to be switched to the switching cell so asto prevent ping-pong switching. The position information of the terminal when switching is completed and the terminal is to be switched to other cells is acquired, the moving distance of the terminalis calculated, when the moving distance is within the preset range, the terminal is not allowed to be switched to other cells, the judgment process is simple, different test scenes can be effectivelydistinguished, ping-pong switching is inhibited, and misjudgment conditions are reduced.