118results about How to "Resolve resolution" patented technology

The invention discloses a pedestrian re-identification method based on multi-attribute and multi-strategy fusion learning. The method of the invention includes the steps of in an offline training phase, firstly selecting pedestrian attributes which are easy to be judged and have a sufficient distinguishing degree, training a pedestrian attribute identifier on an attribute data set, then labeling attribute tags for a pedestrian re-identification data set by using the attribute identifier, and next, by combining the attributes and pedestrian identity tags, training a pedestrian re-identification model by using a strategy fused with pedestrian classification and novel constraint comparison verification; and in an online query phase, extracting features of a query image and images in a database by using the pedestrian re-identification model, and calculating the Euclidean distance between the feature of the query image and the feature of each image in the database to obtain the image with the shortest distance, which is considered as the result of pedestrian re-identification. In terms of performance, the features in the invention are distinguishable and high accuracy is obtained; and in terms of efficiency, the method of the invention can quickly search for the pedestrian indicated by the query image from the pedestrian image database.

The invention provides an ultra-high-definition panoramic video real-time generation and multi-channel synchronous play system, and relates to the technical field of panoramic camera shooting. According to the system, on the basis of camera array imaging and collecting and by means of GPU high-speed parallel processing characteristics, the high-definition image real-time splicing, correcting, dimming, code compressing and transmission functions are achieved, a multi-channel panoramic multi-camera and an application system of the multi-channel panoramic multi-camera are designed, appropriate reprojection models are selected in a self-adaption mode for different shooting modes such as the cylindrical surface shooting mode and the spherical surface shooting mode, the problems that existing panoramic camera shooting devices in China are generally not high in stability, low in resolution, poor in expansibility, short of instantaneity and the like are successfully solved, the highest product resolution can reach 4320 p to 12960 p, and the frame rate is 30 fps.

The invention provides a method, a device and a system for positioning a sound source. The method comprises the following steps: acquiring the signal of each microphone in a microphone array, wherein the microphone array is used to collect the sound of a sound source; acquiring controllable power responses of multiple microphone pairs composed of the microphones according to the framing of the signals; acquiring the sum of the controllable power responses of the multiple microphone pairs, and determining the direction angles of the sound source and the microphone array according to the maximum value of the sum of the controllable power responses; and determining the relative position relationship between the microphone array and the sound source according to the direction angles. The problem that the existing controllable power response technology is of low resolution and high computation burden is solved. The real-time performance, stability and accuracy of sound source positioning are improved.

The invention is applicable to the technical field of application program interface display, and provides an application program interface processing method and a device. The method comprises acquiring the length-width ratio of an original interface and the length-width ratio of a target interface of the application program; acquiring displacement parameters of an object on the original interface in a visual coordinate system according to the relationship of the numerical size between the length-width ratios of the original interface and the target interface when the length-width ratios of the original interface and the target interface are different; adjusting the coordinates of the object in the visual coordinate system; projecting the adjusted visual coordinates to visual plane coordinates; and converting the visual plane coordinates of the object into screen coordinates in a screen coordinate system of the target interface, and displaying the object on the screen of the target interface. According to the application program interface processing method and device provided by the invention, the application program interface is adaptive to multi-platform and multi-screen resolutions.

The invention relates to a radiation spectrum measurement system of the sky polarized light, belonging to the optical electron testing technology field, which is applicable to measuring the sky polarized light and spatial and temporal distribution analysis. The measurement system is consisted of a polarization measurement head, a telescopic optical system, a fiber spectrometer system and a computer. Arranging the polarization measurement head comprises: arranging a cylindrical rotary head on the inside of an interface (1); screwing down a ding screw; then putting a wafer-shaped polarizer in the lumen of the rotary head; using an annular pressing ring to compress and fix the polarizer on the rotary head via two bolts. An equatorial is arranged on an A-frame. Then a refractor is arranged above the equatorial. The back-end of anti-ultraviolet optical fiber is connected on a spectrograph. Then a cosine corrector is arranged on the front-end of the anti-ultraviolet optical fiber. And then the probe-end of the cosine corrector is inserted into an interface (2) and the ding screw is screwed down. The system is provided with strong currency, wide application range and convenient operation.

The invention relates to a biological multimode picture detecting technique, wherein it comprises one PET shooting system with symmetry electrodes, one infrared transparent (reflective) shooting system, one visual light (or fluorescent) transparent (or reflective) shooting system, one ultraviolet (or X-ray) transparent (or reflective) shooting system, one rotation carrier of animal, multi-axle motion controller, multi-channel processor and computer. The carrier comprises one object platform, one frame, one constant-temperature controller, one rotator, and one XYZ three-dimension mover. The invention has multimode composition and 360degree scanning picture, with low cost.

The invention relates to a preparation method of an X-ray zone plate. An atomic layer deposition (ALD) method is used to depose alumina/hafnium oxide or alumina/iridium films of different density andthickness alternatively at the surface of a metal wire whose diameter is of a micron order, namely, a first deposed alumina film layer and a second deposed hafnium oxide film or iridium film layer arearranged alternatively and cyclically to form a series of concentric circular rings. The film plated metal wire is cut and polished by focusing ion beams after film plating, and the zone plate of therequired thickness and precision is obtained. The method is suitable for preparing different types of zone plates.

The invention relates to a distributed optical fiber sensing system, and in particular relates to a distributed optical fiber sensing device based on ASE noise coherent detection and a method. According to the invention, the problems of unavailable spatial resolution and sensing distance combination, low spatial resolution, complex light source structure, time-consuming implementation process, and high implementation cost of the existing distributed optical fiber sensing system are solved. The distributed optical fiber sensing device based on ASE noise coherent detection comprises an ASE noise source, a tunable optical filter, a 1*2 optical fiber coupler, a first optical amplifier, an optical scrambler, an optical circulator, a sensing optical fiber, a second optical amplifier, a variable optical delay line, a third optical amplifier, a 2*2 optical fiber coupler, a dual balance photodetector, a data acquisition card and a computer. The device and the method, which are provided by the invention, are applicable to the field of distributed optical fiber sensing.

The invention discloses a high-resolution X-ray energy spectrometer based on an Si-PIN detector array. Detectors of the energy spectrometer employ an m row*n column Si-PIN detector array, each row of the detectors share one charge sensitive amplifier, there are n columns all together, X rays detected by the detectors are respectively sent to a time discrimination unit and a signal filtering weighting unit through amplification of the amplifiers, and n time signals and single-path energy signals are formed. Inside a digital multichannel pulse-amplitude analyzer, accurate pulse amplitude is extracted after the time signals and the energy signals are processed by an offline correction module and a trapezoid shaping module, and an energy spectrum of the X rays is finally output. The high-resolution X-ray energy spectrometer has the following advantages: the detection efficiency of the detectors in detecting the X rays especially high-energy X rays is improved, the problem of introduction of quite large noise during application of the detector array under common conditions is solved, the signal-to-noise ratio is improved, and the energy resolution of the X-ray energy spectrometer is effectively improved.

The invention discloses a data fusion method used for a multi-frequency multichannel ground penetrating radar. As for original continuous section scanning data of the multi-frequency multichannel ground penetrating radar, the data of each channel are subjected to scanning channel zero correction and scanning channel actual measurement position correction to obtain multi-frequency multichannel radar data of corresponding positions in a scanning section; the radar scanning channel data of each channel at the corresponding position are subjected to time-frequency analysis to obtain multichannel radar signals in a time-frequency domain; the corresponding radar scanning signals of different channels are subjected to synthesis in the time-frequency domain to obtain time-frequency domain radar data, synthesized by the radar scanning signals of the different channels, for each scanning channel position; the synthesized time-frequency domain radar data are subjected to inverse time-frequency transform according to the scanning channels sequentially to obtain a time-domain multi-frequency fusion radar image. The data fusion method has the advantages that the data of the multi-frequency multi-channel ground penetrating radar can be fused effectively, and prospecting capabilities with larger prospecting depth and higher resolution ratio can be achieved by means of making full use of the multi-frequency multi-channel radar signals.

The embodiment of the invention provides a display device and a control method thereof. The control method of the display device comprises the steps that an image processor divides a frame of image into M images and sends the M images to a display controller, wherein the M is an even number larger than or equal to 2; and the display controller controls the display panel to sequentially display the M images in a frame period, and controls the grating panel to sequentially form grating patterns corresponding to the M images in the frame period. The invention discloses a double-layer panel structure based on a grating panel and a display panel. A frame of image is displayed in multiple times in a frame period, and grating patterns corresponding to the images displayed for multiple times are formed in sequence through time-sharing control, peep-proof display is achieved, switching between the peep-proof display mode and the shared display mode is achieved, and the display device has the advantages of being small in brightness loss, high in display resolution ratio, free of loss of peep-proof display state images and the like.

The invention discloses a food-borne pathogenic bacterium detection system based on a high spectrum. The food-borne pathogenic bacterium detection system comprises a surface detection line, a sorting line, a qualified product conveying belt and a point detection line, which are connected with a control system respectively. The invention further discloses a detection method of the food-borne pathogenic bacterium detection system based on the high spectrum. The surface detection line based on a near-infrared high-spectrum system is used for rapidly positioning food-borne pathogenic bacteria; the sorting line is used for conveying pork polluted by the food-borne pathogenic bacteria to the point detection line; Raman chemical imaging is used for realizing species identification of the food-borne pathogenic bacteria. According to the food-borne pathogenic bacterium detection system disclosed by the invention, the problems that the resolution ratio of detecting a microorganism cell structure by the near-infrared high-spectrum system is limited and the large-area scanning and imaging efficiency of the Raman chemical imaging is low are solved; the food-borne pathogenic bacterium detection system based on the high spectrum has the advantages of convenience for utilization and obvious detection efficiency.

The invention discloses a true delay-based wideband phased array wave beam formation method comprising the following steps: after a received signal of each channel is transformed into a frequency domain, performing true delay compensation respectively; if the time domain delay of the signal is tau, representing additional phase in the frequency domain after Fourier transformation; and performing inverse Fourier transformation to the time domain after performing matched filtering so as to acquire a compensated signal. The method realizes precise delay through digital signal processing.

The invention discloses a low-dose X-ray CT projection data restoring method. The low-dose X-ray CT projection data restoring method includes acquiring projection data y<raw> of a low-dose X-ray CT image; setting up a data restoring model (shown in the description) based on penalized weighted least absolute for the projection data y raw, restoring the projection data y<raw> to obtain restored projection data y<restored>, wherein p is ideal projection data to be calculated, the parameter lambda is a non-negative real number, w is a weight factor (shown in the description), wherein both the parameters beta and epsilon are non-negative real numbers, and (shown in the description) is variance of the projection data y<raw>; reconstructing an image for the restored projection data y<restored> by means of an analyzing and reconstructing method to obtain the final low-dose X-ray CT image. The low-dose X-ray CT projection data restoring method is capable of restoring the low-dose CT projection data which is capable of reducing the tube current and scanning time and reconstructing the image through the analyzing and reconstructing method, the image noise is eliminated effectively, the streak artifact is inhibited, and the detail information of the image is well kept.

The invention discloses an ultrasonic testing special probe for butt girth welding of an austenitic stainless steel pipe. The probe adopts a send-receive double crystal focusing structure, so that geometrical scattering of the inner wall of a steel pipe is reduced, and random and interfering echo caused by a wedge block is reduced; an inward concave curved surface is arranged at the bottom of a delay tapered wedge, so that the top of the inward concave curved surface is in contact with the steel pipe to be tested; a horizontal polarized shear wave is generated in the austenitic stainless steel pipe by the special probe and cannot be converted into other types of waves when compared with other wave forms and reflected from the surface parallel to the polarization direction; random echo is less; the horizontal polarized shear wave is almost entirely transmitted into the weld metal, and the acoustic beam directional deflection is minimum when compared with other wave forms. The ultrasonic testing special probe can solve the technical problems that deficiencies are found in the sensibility, the signal to noise ratio and the resolution of ultrasonic testing for butt girth welding of small caliber austenitic stainless steel pipes with phi 34 mm to phi 168 mm external diameter and 3.5 mm to 20 mm wall thickness.

The invention relates to a multidimensional chromatography combination separation device, which comprises a pressurized capillary electrochromatography unit. The pressurized capillary electrochromatography unit comprises a mobile phase driving device, an injection valve, a capillary chromatographic column and a buffer solution bottle which are connected mutually and sequentially, a high-voltage power supply connected in parallel with the capillary chromatographic column, and a detector connected on the capillary chromatographic column. The separation device also comprises a capillary ion-exchange chromatography unit. The capillary ion-exchange chromatography unit comprises a mobile phase driving device, an injection valve and a capillary ion-exchange chromatography column which are connected mutually and sequentially. The capillary ion-exchange chromatography column is connected with an injection port of the injection valve of the pressurized capillary electrochromatography unit. The multidimensional chromatography combination separation device has the advantages of high separation efficiency, large peak capacity, small sample dosage, low raw material cost and low pollution, has more excellent peak capacity and separation capacity than the conventional one-dimensional chromatography, pressurized capillary electrochromatography, two-dimensional liquid chromatography and the like, and is more suitable for analysis of the complex sample.

The embodiment of the invention discloses a display device and a driving method of a display panel. The display device comprises an eyeball tracking sensor, the display panel and a processor; the processor is electrically connected with the eyeball tracking sensor and the display panel; the eyeball tracking sensor is used for identifying eyeball image information of a user; and the processor is used for determining a gaze area of the user watching the display panel according to the eyeball image information of the user, controlling the gaze area to be displayed at a first resolution and controlling a residual light area of the display panel to be displayed at a second resolution, wherein the first resolution is greater than the second resolution. The problems that the resolution of an existing display device is not high enough and the power consumption calculation energy is relatively high when a high-resolution display panel is adopted are solved, high-resolution display of the watching area watched by the user is achieved, the display effect is improved, the high-resolution watching requirement of the user is met, meanwhile, the power consumption and the calculation energy of thewhole display panel can be reduced, and the cost is saved.

The invention relates to the technical field of naked eye three-dimensional display, in particular to a naked eye three-dimensional display method and device based on a vibration grating. The naked eye three-dimensional display method and device based on the vibration grating aim to meet the needs of the limit of a large three-dimensional watching visual area or a non-three-dimensional watching visual area and three-dimensional image high-resolution display. According to the technical scheme, the naked eye three-dimensional display method based on the vibration grating comprises the following steps that (1) a double-viewpoint three-dimensional composite image is manufactured through a three-dimensional image composite method based on a pixel unit; (2) the grating is manufactured, and the grating is placed in front of or behind a 2D display screen; (3) the grating structure obtained in the step (2) is vibrated in the horizontal direction, the inclined direction and the vertical direction according to certain speed, or is vibrated according to a specifically-designed vibrating curve or with a sub-pixel, or a pixel, or a plurality of pixels or a plurality of sub-pixels as a basic unit; (4) the double-viewpoint composite image is changed along with the change of the vibrating grating structure, the vibrating direction and the vibrating rule. The naked eye three-dimensional display method and device are mainly applied to naked eye three-dimensional display.

The invention provides an EHz ultrafast modulation pulse scanning laser and a distributed optical fiber sensing system. A doped optical fiber is carved with a plurality of phase shift gratings with different central window wavelengths, and the wavelength interval between adjacent central window wavelengths is a preset fixed value; when pump light emitted by a pump laser source enters the doped optical fiber through the coupling of a wavelength division multiplexer, the phase shift gratings carved on the doped optical fiber can generate multi-wavelength single-mode narrow-linewidth laser with the wavelength interval of the preset fixed value; and then, the ultrafast modulation is finished by a time domain control method based on EOM (Ethernet over coax) to obtain internal variable frequencypulse light formed by continuously splicing a plurality of pulse lights with linearly increasing frequencies, thereby forming the EHz ultrafast modulation of the distributed feedback fiber laser. Therefore, the coherence length of output laser can be increased on the premise that the laser frequency is unchanged, and the problem that the existing distributed optical fiber sensing system is restricted in high spatial resolution, long distance and high frequency band can be effectively solved.

The invention discloses a real beam electric scanning fast imaging human body security inspection method and a security inspection system. The system comprises multiple wide beam transmitting antennas, a real beam electric scanning receiving array antenna, a position sensor, a multichannel millimeter wave transceiver assembly, a data processing module and a display device. The multiple transmitting antennas are used to transmit millimeter wave signals to cover an inspected human body; with the help of the collected position information, through controlling the phase of each unit of the receiving array antenna, each receiving array antenna fast completes three-dimensional receiving scanning on a corresponding area with low-resolution near field focusing beams; and high-resolution imaging isthen realized through multichannel digital beam synthesis signal receiving and processing, and thus, fast high-resolution security inspection imaging is completed. According to the security inspection imaging system provided in the invention, no mechanical scanning device exists, the imaging algorithm is simple, the contradiction between the high-resolution real beam imaging and the beam scanningtime is solved, the security inspection system is easy to arrange, and fast-passing human body security inspection can be realized.

The invention relates to a deconvolution-based double-optical path spectral measurement system. The system is characterized in that: the system is arranged as a double-optical path structure, one optical path is sequentially composed of an objective, a slit, a collimating lens, a beam splitter, a dispersing element, a first converging lens and a first CCD (Charge Coupled Device) camera, and the other optical path is sequentially composed of a beam splitter, a second converging lens and a CCD camera. Aimed at the key problem that the detection ability of the conventional slit-based spectrometer is limited under weak light, a wider slit is adopted as a substitute in order to increase the light throughput of the system, so that the system has better detection ability under weak light, and moreover, light source spectrum is acquired by calculating the deconvolution of the primary image of undispersed light and the image of dispersed light. The system can be widely applied in the fields of metallurgy, geology, chemical, pharmacy, environment and the like, and is particularly suitable for weak light cases, such as biomedicine and night vision, so the application range is wide.

The invention discloses a multi-exposure infrared image fusion method. The multi-exposure infrared image fusion method comprises the following steps: obtaining a contrast array graph, a noise point invisibility array graph and an exposure suitability array graph of a plurality of to-be-fused infrared images; obtaining a normalized weight map of each infrared image according to the contrast ratio array map, the noise point non-visibility array map and the exposure suitability array map; performing Gaussian pyramid decomposition on the normalized weight map to obtain a weight map Gaussian pyramid of each infrared image; performing Laplacian pyramid transformation on each infrared image to obtain a Laplacian pyramid of each infrared image; and carrying out fusion on the Laplacian pyramids ofthe plurality of infrared images by using the weight map Gaussian pyramid to form a fused infrared image. According to the fusion method, detail expression information of the infrared image is enhanced, and the influence of infrared image noise points on the image quality can be inhibited.

An embodiment of the invention provides a three-dimensional display system based on a cylindrical lens grating. The three-dimensional display system comprises a projector array, a cylindrical lens grating and a vertical diffusion film; the projector array comprises a plurality of projectors; the plurality of projectors are used for projecting images to the cylindrical lens grating; the cylindricallens grating is used for providing a light field with a three-dimensional effect; and the vertical diffusion film is used for diffusing light in the light field with the three-dimensional effect so as to form a three-dimensional image. According to the three-dimensional display system based on the cylindrical lens grating provided by the embodiment of the invention, the projector array comprisesa plurality of projectors, so that compared with the prior art, under the condition that the viewpoints are increased, higher resolution and wider viewing angle are achieved; and the problem of mutualrestriction of the number of viewpoints and the resolution ratio in the prior art is solved, and a 3D image with a better effect can be displayed.

The embodiment of the invention relates to an optical fiber Brillouin distributed type measuring light path, device and method. The measuring light path comprises a first coupler, a second coupler, a third coupler, a first circulator, a first light channel, a second light channel, a sensing optical fiber, a third light path and a fourth light path, wherein pulse light is input into one end of the sensing optical fiber; continuous light is input into the other end of the sensing optical fiber so as to excite Brillouin scattering. Therefore, anti-Stokes components can be enhanced, if the anti-Stokes light is intense enough, the Stokes light is relatively weak in intensity, the Stokes light can be neglected, the conflict of the input light pulse luminosity and the spatial resolution can be avoided, and a high-precision light filter is not needed.

The invention discloses an elevator safety early warning method based on machine learning. Automatic motion matching, noise interference processing, the super resolution and other methods are adopted,effective information is subjected to fusion processing, and related features are extracted to conduct dynamic capturing and early warning. According to the elevator safety early warning method, thevideo information is dynamically captured to be correlated to an automatic early warning mechanism, so that a security check person is reminded of appearance of targets so as to take measures in time;and meanwhile, videos of related information are automatically extracted so that maintaining personnel can conduct series and incorporate case analysis and video comparison analysis treatment, and valuable clues and the like are found.

A scatter meter being set with transceiver double wave-beam antenna and being used on radar carried by satellite consists of support, the first feed and the second feed. It is feature as connecting two said feeds separately to an emitter and a receiver, configuring wave beam of receiving antenna on the first feed to be in certain included angle with wave beam of emitting antenna on the second feed.

The invention discloses a mountain fire monitoring and positioning method based on a small-sized radar. According to the mountain fire monitoring and positioning method based on the small-sized radar, the Doppler radar is used for performing stereoscopic scanning within an appointed region, a suspected fire point meeting the mountain fire echo feature can be found by analyzing the basic reflectivity and the radial speed; the fire point is confirmed according to a result of an infrared sensor, so that mountain fire monitoring and positioning for a power transmission line are realized. The mountain fire monitoring and positioning method based on the small-sized radar well solves the problem that the Doppler radar cannot effectively distinguish fire echo and precipitation echo with low intensity during fire condition monitoring and the problem that the infrared sensor is relatively low in space resolution by combining a Doppler radar stereoscopic scanning result and an infrared sensor result.

The invention discloses a detection kit and a detection method for hepatitis B virus genotyping. The kit comprises a primer pair for polymerase chain reaction (PCR) amplification of a hepatitis B virus gene S area and a PreS2 area, a solid phase detection array, and a nucleic acid amplification reaction system and a color development reagent on a solid phase carrier containing DNA polymerase and reaction substrate, wherein a type detection probe and a contrast probe are fixed on the surface of the solid phase detection array. According to the gene chip-based high-flux, high-specificity, quick and easily-popularized detection method using a PCR technology as the principle, the detection probe is fixed on the detection array and hybridized with a PCR amplified gene fragment to be detected; and after the target fragment is identified by the probe on the solid phase carrier, a nucleotide sequence can be synthesized and prolonged, so that the biotin-labeled amplified fragment is fixed on the detection array, is not eluted and further used for color development and display, and the gene type of the hepatitis B virus to be detected can be detected at one time.

The invention discloses a multi-beam sounding system based on a chirp signal. The multi-beam sounding system based on a chirp signal includes an emission wet end, a reception wet end, a signal processor and a display control computer, wherein the emission wet end emits a chirp signal as a detection signal of the system; the detection signal is received by the reception wet end, and is uploaded to the signal processor after accepting signal pre-processing; the signal processor further processes the data after pre-processing by combination of the data of an auxiliary sensor, and extracts the seabed depth and the orientation information and sends the seabed depth and the orientation information to the display control computer; and the display control computer is used for controlling emission and reception of system signals, and completing processing and display of images and storage of data. The multi-beam sounding system based on a chirp signal utilizes a chirp signal as a multi-beam seabed detection signal, thus guaranteeing higher object measuring resolution while satisfying the demand of the operating range of multi-beam sonar detection, can resolve the contradiction between the operating range of a traditional single frequency signal multi-beam system and the object resolution, and can effectively improve the working performance of the multi-beam system.