158results about How to "Acquisition speed is fast" patented technology

A digital broadcasting receiver, a driving method, and a self-diagnosis method thereof, are provided. The digital broadcasting receiver includes: a digital demodulator for demodulating a digital broadcasting signal; a lock detector for detecting lock signals from the digital demodulator; and a lock processor for controlling the digital demodulator according to the detected lock signal.

The invention discloses a full-automatic scanning system and a method for a microscopic section. The system comprises an object stage, a lighting device, an object lens, a Z-axis controller, a scanning camera and a computing device, the scanning camera is provided with a rolling shutter exposure mode and a banded array or banded subarray reading mode, the scanning camera performs a continuous digital imaging scanning for a banded partial area of a section sample which moves at a constant speed along a shutter rolling direction of the scanning camera, under the rolling shutter exposure mode, the scanning camera can perform a parallel exposure for next frame of image before the exposure of a former frame of image is finished, and the computing device can splice each frame of image which is subjected to continuous exposure to form a complete digital section. By means of the technical scheme, the uniform motion speed of the section sample can be improved, simultaneously the motion blurring caused by sample motion during exposure of the scanning camera can be reduced, the image acquisition speed is improved, and the image acquired by the scanning camera is clear and stable.

The invention discloses a method for achieving an Internet of things intelligent data gateway. The gateway achieves data collection in a device and the data are sent to a server at regular time or the server obtains the data at a certain fixed time interval. According to the gateway device, the defects that a traditional gateway device is complex in upper computer software programming, low in data collection speed, low in real-time performance and integrity of data collection and the like are overcome.

The invention discloses a downloading method for map data, comprising: a user terminal searches whether or not there is data of map piece corresponding to map region need to be required stored locally, if so, reading data of the map piece stored locally and executing continuous map data processing operation; if not, downloading data of the map piece from the server and executing continuous map data processing operation. The invention further discloses a downloading device for map data and a downloading server as well. The invention is capable of enabling the user to obtain quickly and accurately the map data, to accomplish personified and agile map data download aiming at different users, to reduce downloading time of the map data, to reduces storage space occupied, at the same time to reduces cost of network data stream, to reduce service cost of the user and to reduce dependency of the network, which reduces network cover rate and influence of network signal intensity for the user who uses the map.

The invention relates to the research field of magnetic resonance imaging and provides a method and a system for tracking a tested space attitude, dynamically adjusting imaging parameters of a scanner in real time and avoiding acquisition of motion artifact images in the acquisition process of magnetic resonance imaging data based on a computer vision target recognition and tracking technology. By adopting at least two video cameras for simulating stereoscopic vision of human eyes, a target is recognized, the tested space attitude is calculated, and space motion of the space attitude is monitored and judged. Once the motion occurs, parameters of the corrected space attitude are calculated immediately and are transmitted to the scanner through a transmission control protocol/internet protocol (TCP/IP), the imaging parameters of the scanner are adjusted in real time, the scanner is ensured to be capable of acquiring image data at a correct space position under the condition that the motion of the tested space attitude exists, and accordingly finally-obtained images are like images acquired under the condition that the motion of the tested space attitude does not occur. Therefore, acquired image data are stable and reliable in quality, the motion artifact is eliminated completely, and motion correction is not required in post-processing.

The invention relates to a magnetic resonance diffusion tensor imaging method which comprises the following steps: performing K space sparse sampling on an imaging object to obtain K space data of a diffusion weighted reference image; performing K space sparse sampling on the imaging object to obtain the K space data of a diffusion weighted image; performing share filling on the K space data of the diffusion weighted reference image and the diffusion weighted image by keyhole imaging; and performing image reconstruction on the K space data after share filling. The magnetic resonance diffusion tensor imaging method and system provided by the invention have the advantages of reconstructing complete data, shortening the scanning time, improving the data acquiring speed and achieving rapid imaging by adopting sparse sampling rapidly and continuously to acquire K space data and performing share filling under the action of the keyhole imaging technology.

The invention provides a dual-mode biological image collecting device based on fingerprints and finger vein. The dual-mode biological image collecting device comprises a casing, a flat-bottomed groove is formed in the middle on the upper surface of the casing, an inclined plane is formed at the top part of the groove, electrodes are mounted at the front end and the rear end of the groove, vein image collecting infrared light sources are mounted on two side walls of the groove, a fingerprint image collecting red light source and a fingerprint image collector are mounted in the position of the bottom part of the casing corresponding to the inclined plane part of the top part of the groove, an infrared receiver and a vein image collector are mounted in the position of the bottom part of the casing corresponding to the groove, and a power supply and a control circuit for supplying power or signal transmission to the electrodes, a temperature sensor, the red light source, the infrared light source, the infrared receiver and the image collector are arranged in the casing. The performance of the biological characteristic recognition system for collecting image information in the invention is better than that of the single-mode biological characteristic recognition system just based on fingerprints and finger vein. Therefore, by adopting the dual-light-path system for collecting the images of both the fingerprints and the hand vein, the collecting speed is increased.

The invention provides a sample collection method and system used for face recognition and based on a video. The sample collection method used for face recognition and based on the video comprises the steps that an image region, containing movement information, in an image frame of the video is obtained firstly, the image region is detected so that a face pixel region can be obtained, the face pixel region in the image frame containing the face is tracked, so that a historical image frame of the same face is obtained, face characteristic extraction is conducted on the high-quality historical image frame of the same face, so that face characteristics required for face recognition are obtained, and finally, the face characteristics are stored. According to the sample collection method and system used for face recognition and based on the video, manual operation of sample collection workers is not needed in the whole sample collection process for face recognition, the collection speed is high, and the collection efficiency is high.

The invention relates to a curvature detection device and method for a drill rod. The device comprises a drill rod clamping part, a sensor transmission part and a control and operation part, wherein a three-jaw chuck, a V-shaped block and a stepping motor A are arranged on the drill rod clamping part; the three-jaw chuck is used for clamping one end of the drill rod, and the other end of the drill rod is placed on the V-shaped block; a 2D (two-dimensional) laser sensor and a stepping motor B are arranged on the sensor transmission part; the control and operation part comprises a single-chip microcomputer and a host. The detection method comprises the following steps: acquiring the three-dimensional coordinate information of hemi-profile data points of a plurality of sections of the drill rod by using the 2D laser sensor; processing and calculating a section central point through the host, and fitting the central lines of n sections; determining the maximum curvature and coordinate value of a maximum bending point, comparing with the curvature limit value of the drill rod, judging whether the curvature of the drill rod is qualified or not, and providing a judgment result for a user. The device is scientific in structure, the detection method is simple, the curvature information of the drill rod can be obtained efficiently and accurately, and technical support is provided for the increase of the production accuracy of the drill rod.

The invention improves the data acquisition speed of traditional X-ray fluorescence CT. The technical scheme is to provide a rapid X-ray fluorescence CT method which comprises the following steps: using a large light spot to irradiate a sample and using an array fluorescence detector with a lead collimator to record fluorescence energy spectrum. Compared with the traditional X-ray fluorescence CT method, the data acquisition speed of the method is improved by times. The improved times of the data acquisition speed is equivalent to the increased times of the array cells of the array fluorescence detector. For example, for a 64x64 array fluorescence detector, the data acquisition speed can be improved by 64x64 times. The method can realize rapid and in-situ X-ray fluorescence CT experiments.

The invention discloses an audience share statistical method of an interactive network television system and a system thereof, relating to a television system audience share statistical method and a system thereof, aiming at solving the problem of the incorrectness of traditional audience share statistic. The invention collects the operational data when the user of the interactive network television system views and the interactive data between the interactive network television system and the users thereof by collecting the basic user information of the interactive network television system, and then gathers statistics to the collected data by making use of the interactive network television system. The workload obtained by the audience share data can be reduced effectively and the obtaining speed, the accuracy and the reliability of the statistical data can be improved at the same time.

The invention discloses a large-visual-field high-resolution microscopic imaging method based on optimal Hadamard codes. The large-visual-field high-resolution microscopic imaging method includes generating a required optimal Hadamard code matrix by a computer, taking an LED array as a microscope light source, displaying optimal Hadamard code patterns, shooting a series of low-resolution microscopic images of a to-be-tested sample at different illumination angles by a camera, solving the low-resolution microscopic image of the to-be-tested sample under single-angle illumination according to the optimal Hadamard code matrix, and compositing the large-visual-field low-resolution microscopic images into a large-visual-field high-resolution image by the aid of a frequency domain aperture synthesis technology. The large-visual-field high-resolution microscopic imaging method has the advantages that required exposure time of the camera can be shortened, system image collection speed can be increased, noise can be suppressed, and quality of image collected by a system can be improved.

The invention discloses a three-dimensional morphology measurement method and a device for a objects with mirror surface. The device comprises a computer, a main camera, a slave camera, a refraction display screen, a reflection display screen, a semi-transparent mirror and a fixing device; the computer is connected with the main camera, the slave camera, the refraction display screen and the reflection display screen; the main camera, the slave camera, the refraction display screen, the reflection display screen, the semi-transparent mirror and the fixing device are fixed on an optical platform; the refraction display screen, the reflection display screen and the semi-transparent mirror are perpendicular to the optical platform; the fixing device is in a public field of the main camera andthe slave camera; image light paths reflected by the semi-transparent mirror are parallel to the image light path displayed on the refraction display screen. According to the three-dimensional morphology measurement method and the device for objects with mirror surface, object point normal vector is calculated firstly, then the morphology measurement of the objects of a continuous zone is calculated through using a gradient integration method and a binocular system; the morphology measurement of the objects of a discontinuous zone is obtained by using a direct-phase measurement deflection method and a dual-screen.

The invention discloses a public security resource data service system, which is applied to a public security data resource processing process and mainly comprises a data acquisition and processing module and a data service platform, Wherein the data acquisition and processing module adopts a plug-in type structure, transmits data in a unified data format, and comprises databases and a central processor, a star-shaped structure is formed between the processor and each database, and the processor and each database are in seamless data connection through corresponding database plug-ins; The dataservice platform adopts a diversified hybrid architecture for service based on an object storage mode, and comprises a diversified database and a diversified service interface. According to the invention, a unified intermediate data format is adopted for transmission, the connection between different source ends and target ends is simplified, the data acquisition efficiency is improved, the fusion of information resources is realized, the analyzed high-value data in mass data are highlighted, and great convenience is provided for the public security criminal investigation work.

The invention provides a network public opinion monitoring system and method. The system comprises a public opinion collection module, a public opinion processing module, a public opinion service module, a management control module, and a database server. According to the invention, the collected webpage text data is first subjected to word segmentation processing, keyword processing, sensitive word processing and cluster analysis, thereby processing the webpage text data into a standardized structure form for processing by the public opinion service module, which effectively solves the shortcomings of the long time lag of the traditional public opinion monitoring system; the public opinion service module uses data mining to obtain hot topics, effectively solving the shortcomings of the computer complexity of the traditional public opinion monitoring system, thus ensuring the real-time and accuracy of hot topics.

The embodiment of the invention, which belongs to the technical field of data processing, relates to a medical data processing method and device. The method comprises: acquiring original medical record data that meets a preset condition and acquiring first medical decision-making information and first feature information of target medical record data from the original medical record data; traininga machine-learning-based original model based on the first medical decision-making information and the first feature information to obtain an auxiliary decision-making model; and predicting second feature information of a to-be-processed patient by using the auxiliary decision-making model to obtain second medical decision-making information of the to-be-processed patient. With the method provided by the invention, a problem of low accuracy rate of the recommended medical scheme based on the rule tree in the prior art is solved; and the accuracy of the recommendation of the medical scheme isimproved.

The invention discloses a Rayleigh-Doppler laser radar ground calibration system. A light beam generated by a laser is divided into two beams through a beam splitter; one small portion is directly sent to a first detector through multi-mode optical fibers to serve as a reference signal; and most portion after being expanded by a beam expander is then guided into a sealed pipeline by a reflecting mirror; after the laser is scattered by air in the sealed pipeline, scattered signals are received by a telescope and then guided in through the multi-mode optical fibers to be sent to a standard tool for signal treatment; signals transmitting through the standard tool are sent to the detector by a convergent lens for further signal analysis treatment; and finally, the detector sends the result of the signal treatment to a computer. As a dependence relationship from a precise Rayleigh- Brillouin scattering frequency spectrum function and a frequency response function to a temperature is obtained by emitting laser signals in a ground sealed container and receiving as well as processing echo signals is obtained, the Rayleigh-Doppler laser radar ground calibration system, disclosed by the invention, has the advantages of providing calibration for inverse algorithm and improving measurement precision.

The invention discloses a method for SPEED rapid magnetic resonance imaging based on wavelet domain sparse representation. The method for SPEED rapid magnetic resonance imaging based on wavelet domain sparse representation comprises two steps of regular under-sampled data collection and SPEED image reconstruction based on wavelet domain sparse representation. The regular under-sampled data collection comprises two steps of k-space regular under-sampling and k-space central domain complete sampling. The SPEED image reconstruction based on wavelet domain sparse representation comprises seven steps of zero filling Fourier reconstruction, discrete wavelet transformation, wavelet domain double-layer sparse ghost model construction, overlapped ghost separation based on a least square error method, discrete wavelet reverse transformation, rectification summation of a plurality of ghost images and image reconstruction. The discrete wavelet transformation is used for SPEED data sparse representation, the sparseness of the image is improved through discrete wavelet transformation, and further the quality of the SPEED reconstruction image is improved.

The invention provides a non-contact ultrasonic testing method and belongs to the field of ultrasonic vibration testing. The method is characterized in that high-voltage pulses or alternating voltage is adopted to excite high-frequency vibration of a non-contact focusing probeand further to induce sound waves to be transmitted out, sound wave radiation energy is focused, focused sound waves are emitted to a shot point of a tested geologic model, ultrasonic waves are generated on the shot point and transmitted to the interior of the tested geologic model, simultaneously a detection point of the tested geologic model is detected to obtain voltage signals, and the voltage signals are converted to digital signals and transmitted to a computer to be processed. The non-contact ultrasonic testing method solves the problem of various normal geologic model simulation methods, can perform large-scale multipoint non-contact ultrasonic detection for complex surface models and meets special requirements of modern geophysical prospecting fine simulation.

The invention relates to a super-resolution fluorescent digit holographic sectioning microimaging system and method and belongs to the field of fluorescent digit holographic and super-resolution imaging. Laser after amplitude modulation through a spatial light modulator loading a proper mask structure enters a microobjective to generate exciting light in a three-dimensional structure on a to-be-image sample; excited fluorescence of the sample is collected by the microobjective, and is then diffracted and divided and shifted in phase through the spatial light modulator through a dichroscope and an imaging system, and the two beans of light intervene in a position where an image detector is located to form a hologram which is recorded; the recorded hologram is reconstructed through a numerical algorithm in a computer, and for a structure in certain depth in the sample, reconstructed images of super-resolution and optical section can be separately acquired; the reconstructed images of super-resolution and optical section are fused by means of the numerical algorithm, so that super-resolution optical sectioning imaging is realized; and the reproducing distance of the hologram is changed, so that three-dimensional imaging of the super-resolution optical sections of structures in different depths of the sample can be realized.

The invention provides a data acquisition method and system. The data acquisition method comprises the following steps of: generating a URL (Uniform Resource Locator) set to be downloaded according to the URL distribution policy and the URL information of a site to be acquired; downloading URL sound codes according to the URL set to be downloaded; and analyzing the URL sound codes to obtain data required by users. By using the data acquisition method and system provided by the invention, data required by the users can be automatically acquired from the internet.

The invention relates to a double-focusing ultrasonic probe and sparse array photoacoustic tomography imaging system. Each probe comprises a concave detection face. The numerical value hole diameter of each concave detection face in the first direction is larger than that of the concave detection face in the second direction. A signal receiving angle of each concave detection face in the first direction is larger than that of the concave detection face in the second direction. The focused region length of each concave detection face in the second direction is larger than that of the concave detection face in the first direction. The first direction is perpendicular to the second direction. Each probe has a large signal receiving angle on an imaging fracture surface, and therefore the quality of an image reconstructed by a compressed sensing image reconstructing method under a low sampling rate can be improved. Meanwhile, an annular probe array can be formed in a sparse distribution mode, and cost of the imaging system can be reduced. Data acquisition amount needed by image reconstruction can be reduced, and therefore data acquisition speed and imaging speed are increased.

The invention discloses a grid-connected inverter frequency coupling impedance characteristic extraction method based on multi-sine-wave signal injection. The method comprises the steps: adopting an impedance measuring device based on a model predictive control method to realize the low-impedance characteristic in a broadband range; decomposing the multi-input and multi-output frequency coupling impedance characteristics of the grid-connected inverter into four single-input and single-output subsystems and performing independent measurement; measuring the broadband frequency coupling impedancecharacteristics of the grid-connected inverter through one-time signal injection, so enough measurement precision and rapidity are ensured. Compared with an existing frequency coupling impedance characteristic extraction method, the frequency coupling impedance characteristic extraction method has the advantages that the impedance characteristic extraction efficiency is remarkably improved whilethe measurement precision is guaranteed, and faster and more efficient frequency coupling impedance characteristic extraction can be achieved.

The invention relates to a public sentiment event extracting technology and discloses an event public sentiment information extracting method and system based on a micro-blog platform. The method comprises the steps of obtaining keywords, the starting time and deadline of an event, constructing a page link of a page to be sampled according to the link format of the search service of the micro-blog platform, carrying out micro-blog sampling according to the page link to generate a sample micro-blog, computing the event heat degree of the event according to the sample micro-blog, computing the micro-blog grabbing cycle according to the event heat degree, and obtaining a micro-blog page related to the event in combination with the page link according to the micro-blog grabbing cycle. The micro-blog information of the micro-blog page is extracted to finish extracting the public sentiment of the event. The event public sentiment information is obtained more comprehensively and efficiently, and real-time public sentiment information can be collected.

The invention provides a multispectral image acquiring method on the basis of line scanning hyperspectral imaging. The method comprises the following steps of: presetting more than one characteristic wavelength for a sample to be detected; determining a relation between line numbers on a spectral axis of a camera and the wavelengths; by utilizing the more than one characteristic wavelength of the sample to be detected and the relation between the line numbers on the spectral axis of the camera and the wavelengths, calculating more than one line number on the spectral axis of the camera, which corresponds to the more than one characteristic wavelength; carrying out acquisition on the sample to be detected on a conveying device by a hyperspectral spectrometer and the camera, extracting line pixel information corresponding to the more than one line number from a two-dimensional matrix obtained by acquisition each time, and combining the line pixel information corresponding to the more than one line number in a plurality of two-dimensional matrices obtained by acquisition so as to obtain a multispectral image under multiple characteristic wavelengths. The method can implement acquisition of the multispectral image under the specific wavelengths.

The invention belongs to the technical field of concrete member durability monitoring equipment, and relates to an ECT sensor for monitoring the moisture transmission inside a concrete member. The ECTsensor is designed in a round shape. The structures of electrode plates, a clamp and a water storage tank are optimized. The traditional sensor structure design suitable for pipeline two-phase flow measurement is abandoned. Vertical placement and a non-closed design are adopted. Copper foil electrode plates are adhered to the outer wall of a PVC insulating pipe. The size and number of the electrode plates simplify the hardware structure. A metal outer shielding cover is adopted for sealing. A water storage pipe and a water storage pool facilitate the research on the transmission process of moisture in a concrete test piece during water injection at different angles. The sensor is high in sensitivity, low in cost, free of radiation, simple and portable, and can realize nondestructive monitoring. An imaging result can be compared with a shot test piece picture. The defect that there is no verification method for the imaging result of the traditional sensor is overcome, and a scientificbasis is provided for mastering the transmission rule of moisture in concrete and conducting research on the durability of concrete.

The invention discloses a mine belt conveyor video centralized control system based on configuration software. The system is composed of a host computer host, an industrial Ethernet ring network, a server, a sensor, a camera, a cable, a control substation, an anti-explosion switch, a display, a communication gateway, a UPS anti-explosion power supply and the configuration software. According to the mine belt conveyor video centralized control system provided by the invention, an industrial Ethernet technology is used, and underground information is transmitted to a dispatching center through anetwork cable, so that the problem that underground data in the existing coal mine cannot be transmitted to an over-ground dispatching center in time is solved. Internationally universal configuration software iFix is used, so that a belt centralized control system integrating control, data acquisition, process monitoring, alarm and alarm management, trend analysis and other functions is realized, thus the acquisition speed of the underground information on the well is effectively accelerated, and remote control and fault monitoring of underground equipment are realized.

The invention provides an application icon display method and device. The method comprises the following steps: displaying application icons in a desktop area of electronic equipment in a first display mode; obtaining display contents pushed to applications corresponding to the application icons; after obtaining the display contents, displaying the application icons in the desktop area in a second display mode, wherein the display contents are displayed in the area in which the application icons are located in the second display mode. The method and the device have the beneficial effects that when the display contents pushed to the applications corresponding to the application icons are obtained, the display mode of the application icons is changed from the first display mode to the second display mode, and the display contents are displayed in the area in which the application icons are located in the second display mode; by applying the technical schemes provided by the invention relative to the mode in the prior art that the pushed display contents are prompted in the application icons, users can directly check the pushed display contents in the area in which the application icons are located, thus improving the display content obtaining speed.

The invention provides an image processing method for positioning a touch screen, which comprises the following steps: firstly, an image shooting module is initialized; secondly, a plurality of image sensors in the image shooting module perform synchronous shooting, and an image processing module performs time-sharing read on image data of effective shooting areas of various image sensors; thirdly, two storage areas the memory spaces of which are both one frame, wherein the other memory space is used for reading out the image data when one memory space is used for writing in the image data, the two memory spaces are alternately transformed and write-in and read-out are simultaneously performed; and fourthly, communication between the image processing module and a host computer is performed, and a position coordinate of a final touch point is determined. The image processing method for positioning the touch screen has the advantages of low cost, high positioning precision and quick transmission speed.

The invention discloses an image-sensor-based detection system of colloidal gold immunoassay and belongs to the field of the colloidal gold immunoassay. The detection system is as follows: a test strip placing platform for placing a test strip is arranged on a test strip detection platform; an illumination module and an imaging module are arranged above the test strip placing platform of the test strip detection platform; the illumination module consists of an illumination light source and a light homogenization unit arranged below the illumination light source; the illumination light source is a hollow annular light-emitting diode array light source formed by means that a plurality of light-emitting diodes are uniformly formed in an annular array; an image sensor of the imaging module uses a CMOS image sensor and the signal output end of the imaging module is electrically connected with the input end of a data collecting and processing device. The system adopts the annular matrix illumination and is provided with the light homogenization unit so that output light is homogenized and the detection result is accurate; the imaging module adopts the CMOS image sensor, so that the collection speed is high, and the requirement of dynamically tracking and observing the reaction process can be met.