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343results about How to "Improve correspondence" patented technology

Focusing rotary scanning photoacoustic ultrasonic blood vessel endoscope imaging device and focusing rotary scanning photoacoustic ultrasonic blood vessel endoscope imaging method

The invention belongs to the technical field of non-destructive testing and measuring, and discloses a focusing rotary scanning photoacoustic ultrasonic blood vessel endoscope imaging device and a focusing rotary scanning photoacoustic ultrasonic blood vessel endoscope imaging method. The device comprises a photoacoustic ultrasonic endoscope imaging probe, a rotating connecting part and a peripheral circuit part, wherein pulse laser generates 90-degree reflection at the light outlet end and is irradiated on the blood vessel wall after being gathered by a cylindrical surface light gathering lens, photoacoustic signals are generated, a sound-sensitive element receives the photoacoustic signals, the photoacoustic signals are collected and recorded after being converted, the synchronous working of a data collector and a pulse laser is realized, triggering signals generated by the pulse laser trigger an ultrasonic pulse emitting and receiving device to emit electric signals, the electric signals trigger the sound-sensitive element to emit ultrasonic signals, the ultrasonic signals are reflected after reaching the blood vessels, are received by sound-sensitive elements and are collected and recorded after being converted, a step motor drives the device for carrying out scanning to obtain the whole blood vessel fault data, and photoacoustic and ultrasonic images are obtained after the processing. The sound-sensitive elements are shared by ultrasonic and photoacoustic images, and the high-resolution and high-sensitivity blood vessel internal ultrasonic photoacoustic imaging can be realized.
Owner:SOUTH CHINA NORMAL UNIVERSITY

Control of light in response to an audio signal

Method, device and system for generating a light control parameter for controlling light (20), e.g. ambient light, in response to an audio signal (A). The audio signal (A) is analyzed in order to extract a temporal evolution of semantic content of the audio signal (A). A light control parameter is then generated according to the temporal evolution of semantic content of the audio signal (A), either on-line or off-line. This enables generating light that is perceptually aligned with the audio signal, e.g. music. In a preferred embodiment spatial properties of the audio signal (A) are extracted, and separate light control parameters are generated for controlling light sources spatially positioned according to the spatial properties of the audio signal, e.g. for stereo or surround sound systems where light sources are positioned near each loudspeaker. Such embodiment enables spatial correspondence between light and audio. In another preferred embodiment semantically distinct temporal sections of a sequence of the audio signal (A) are determined, e.g. sections of a piece of music, and wherein the light control parameter is generated to reflect these sections of the audio signal (A). Such embodiment enables temporal changes in light that follow perceived changes in e.g. a piece of music. Applications of the described method is e.g. within home entertainment systems, theatres, jukeboxes, bars, restaurants, cinemas and discotheques.
Owner:TP VISION HLDG B V HOLDCO

Internal rectal optical, optoacoustic and ultrasonic multimode imaging endoscope and imaging method thereof

The invention discloses an internal rectal optical, optoacoustic and ultrasonic multimode imaging endoscope which comprises a sleeve, an optoacoustic signal activating component, an ultrasonic signal activating and collecting component, an optical imaging component and an image reconstructing and displaying component. A device comprises a compact internal rectal optical, optoacoustic and ultrasonic multimode imaging endoscope, three kinds of imaging can be performed simultaneously, multi-parameter physical information and multi-scale structural images in recta can be acquired. The invention further provides a configuration scheme of the whole device and a method for utilizing the device for imaging. Three imaging techniques are highly integrated into one set of instrument, each imaging technique is optimized, and combination of three rectal endoscopic imaging methods of optical imaging, optoacoustic imaging and ultrasonic imaging is realized. The integrated endoscope combines specific advantages of three imaging modes, rectal physical images with multi-parameter information and multi-scale structural characteristics can be acquired, and application requirements of a rectal endoscope on medicine can be met better.
Owner:广州佰奥廷电子科技有限公司

Method for planning dynamic lines of urban public transport

The invention relates to a method for planning dynamic lines of urban public transport, in particular to a method for processing vehicle dispatching data by utilizing GPS data uploaded by a vehicle-mounted terminal through an urban public transport control center. The method solves the problems that the acquisition of road congestion information and dynamic line planning decision-making are severely lagged behind. The method comprises the following processes of: inputting information of all vehicles, sites, lines and road sections to be monitored into a database and establishing relevant corresponding relation tables; uploading and storing real-time GPS data into the database through mobile communication by the vehicles of all the lines; according to the real-time GPS data of the vehicles of all the lines, evaluating and recording the congestion degree of all road sections to be monitored by the database; formulating planning line options by utilizing GIS maps and sorting planning line options for preferable adoption according to the congestion degree of all road sections to be monitored by the control center; and storing the selected planning line options into the database as new lines and issuing the new lines to the vehicles of the lines through mobile communication by the control center.
Owner:XIAMEN YAXON NETWORKS CO LTD

Marine splash environment simulation test device

The invention belongs to the technical field of marine equipment, and particularly relates to a marine splash environment simulation test device, wherein stringed testing cable holes are arranged in the upper part of one side surface of the box-structured test box, a frame-structured drive pull rod is arranged on the other side, a splash plate angle adjusting rod is arranged at the lower part, and a splash plate is formed at the inner end of the splash plate angle adjusting rod; sensors and water inlets are arranged on the side surface of a liquid area from top to bottom; a gas exhaust opening, a ventilating and moisture exhausting device, an infrared heating lamp and a box temperature sensor are fixedly and sequentially arranged on the top side surface of the test box body from right to left; and a ultraviolet lamp, an air blower, a nozzle, a water spray pump, a liquid level controller, a dissolved oxygen sensor and a water drain opening are arranged on the opposite side of the test box corresponding to the side surface provided with the drive pull rod. The marine splash environment simulation test device has simple structure and higher automation degree, is convenient to operate, needs no staff attendance, and can simulate marine splash environment in a laboratory, so as to analyze and evaluate the corrosion and aging of the material.
Owner:725TH RES INST OF CHINA SHIPBUILDING INDAL CORP

Low-permeability sandstone reservoir pore structure quantitative inversion method based on nuclear magnetic resonance

The invention discloses a low-permeability sandstone reservoir pore structure quantitative inversion method based on nuclear magnetic resonance. The method comprises the following steps: I, selecting a basic sample; II, classifying the type of a pore structure; III, establishing a well logging chart for identifying the pore structure; IV, establishing a pore throat distribution inversion formula according to the type of the pore structure; V, verifying the accuracy of the formula; VI, identifying the type of the pore structure of a shaft section by utilizing the well logging chart; VII, quantitatively inverting the distribution of free fluid pore throats by utilizing a nuclear magnetic resonance well logging T2 spectrum. The method has the following beneficial effects: a reliable method and technology are provided for quantitatively evaluating the pore structure, and the research concept of the current method can be broken through. The continuous free fluid pore throat distribution can be inverted by virtue of the nuclear magnetic resonance well logging, so that direct evidence is provided for evaluating the effectiveness of the low-permeability sandstone reservoir, application of the well logging information in the quantitative inversion of the micro pore structure of the reservoir is favorably explored, and the application and development of the nuclear magnetic well logging technology can be promoted.
Owner:SOUTHWEST PETROLEUM UNIV

Control of light in response to an audio signal

Method, device and system for generating a light control parameter for controlling light (20), e.g. ambient light, in response to an audio signal (A). The audio signal (A) is analyzed in order to extract a temporal evolution of semantic content of the audio signal (A). A light control parameter is then generated according to the temporal evolution of semantic content of the audio signal (A), either on-line or off-line. This enables generating light that is perceptually aligned with the audio signal, e.g. music. In a preferred embodiment spatial properties of the audio signal (A) are extracted, and separate light control parameters are generated for controlling light sources spatially positioned according to the spatial properties of the audio signal, e.g. for stereo or surround sound systems where light sources are positioned near each loudspeaker. Such embodiment enables spatial correspondence between light and audio. In another preferred embodiment semantically distinct temporal sections of a sequence of the audio signal (A) are determined, e.g. sections of a piece of music, and wherein the light control parameter is generated to reflect these sections of the audio signal (A). Such embodiment enables temporal changes in light that follow perceived changes in e.g. a piece of music. Applications of the described method is e.g. within home entertainment systems, theatres, jukeboxes, bars, restaurants, cinemas and discotheques.
Owner:TP VISION HLDG

Magnetic field generator suitable for unilateral nuclear magnetic resonance and method for making same

A unilateral NMR sensor comprising a ferromagnetic yoke; a permanent magnet arranged on the yoke; a pole piece on the magnet; the pole piece including an air-pole piece interface surface whose shape corresponds to an equipotential contour of magnetic scalar potential. An approach for designing single-sided magnets suitable for unilateral magnetic resonance (UMR) measurements is presented. The method uses metal pole pieces to shape the field from permanent magnets in a target region. The pole pieces are shaped according to solutions to Laplace's equation, and can be designed using a combination of analytical methods and numerical optimization. The design leads to analytical expressions for the pole piece shape and magnetic field. The method is developed in Cartesian, polar, and spherical coordinates, and the merits of each system are discussed. The effects of finite magnet size on the field quality are explored through simulation, and are found to have a substantial effect in many cases. A magnet is designed using our method to produce a static field with a constant gradient over a region 2 cm in diameter and 2 mm thick. This leads to a compact cylindrical magnet just over 11 cm in diameter, topped with a single metal pole piece. The design is validated through simulation. The simulated field is found to agree closely with that specified analytically through the design procedure.
Owner:UNIVERSITY OF NEW BRUNSWICK

Simulated marine corrosion test machine

The invention relates to a metallic erosion experimental device, in particular to a marine erosion simulation tester for measuring erosion conditions of metals in the marine environment. The invention comprises an upper water storage tank, a lower water storage tank and a main water tank, wherein, a siphon tube is arranged between the main water tank and the lower water storage tank; one end of the siphon tube is positioned inside the main water tank and the other end of the siphon tube is inserted into the lower water storage tank; the upper water storage tank is communicated with the lower water storage tank through a water pipe capable of controlling the flow rate; a water inlet pipe capable of controlling the flow rate is arranged on the upper water storage tank and the other end of the water inlet pipe is inserted into the main water tank; an electrically controlled wave generating plate and a test strip holder are arranged inside the main water tank; a sea mud zone at the bottom is provided with a plurality of baffle plates; a liquid level controller is arranged on the upper water storage tank and connected with the water pipe through an electrical wire; a filter screen is arranged inside the lower water storage tank and water which is filtered by the filter screen passes through the water pipe and flows into the upper water storage tank; the wave generating plate is connected with a driving motor through a transmission tension rod; and the test strip holder can hang pieces respectively or hang pieces through electrical interlocking. The test result of the device is reliable and convenient for observation, and the simulation environment is various and true.
Owner:INST OF OCEANOLOGY - CHINESE ACAD OF SCI

An In-Situ Measurement System for Soil Saturated Hydraulic Conductivity and Air Conductivity

The invention discloses an in-situ measurement system for soil saturated hydraulic conductivity and air conductivity, which includes an air supply source (1) and a water supply source (9), and is characterized in that the measuring cylinder (7) is equipped with a water inlet (8), the water inlet (8) is tightly connected to the water supply source (9) through the first connecting hose (10); the top of the measuring cylinder (7) is airtightly connected to the rubber plug (6), and the rubber plug (6) Connect the tee (4), a branch pipe of the tee (4) is sealed to the gas supply source (1) through the second connecting hose (12), the gas supply source (1) is connected to the gas flow regulating valve (2) and the gas The flowmeters (3) are connected in series; the other branch of the tee (4) is connected to the air pressure measuring meter (5) through the third connecting hose (13); this system can realize in-situ soil air conductivity and soil saturation The continuous observation of hydraulic conductivity reduces the disturbance to the measured soil, makes the measurement results more accurately reflect the actual situation, and ensures that the soil air conductivity and soil saturated hydraulic conductivity are consistent with the measured soil, laying the foundation for establishing a correct quantitative relationship between the two. foundation.
Owner:张振华

Image description method and device

ActiveCN110309839AOvercome the shortcomings of relying on the performance of the model itselfOvercome the shortcomings of its own performanceNatural language translationCharacter and pattern recognitionFeature extractionImage description
The invention provides an image description method and device, and the method comprises the steps: carrying out the feature extraction of a target image through employing a plurality of first featureextraction models, and obtaining the image features generated by each first feature extraction model; performing fusion processing on the image features generated by the plurality of first feature extraction models to generate global image features corresponding to the target image; performing feature extraction on the target image by using a second feature extraction model to obtain a target detection feature corresponding to the target image; inputting the global image feature and the target detection feature corresponding to the target image into a translation model, and using the generatedtranslation statement as a description statement of the target image, so that in the subsequent process of inputting the global image characteristics corresponding to the target image and the targetdetection characteristics into the translation model to generate the translation statement, the global image characteristics of the image information are richer as a reference, and the output translation statement is more accurate.
Owner:BEIJING KINGSOFT DIGITAL ENTERTAINMENT CO LTD
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