54 results about "Structural imaging" patented technology

The invention provides a high-frequency electromagnetic excitation cable detection image reconstruction method and system, and belongs to the technical field of underground facility multi-field coupling detection and imaging, and the method comprises the steps: applying high-frequency electromagnetic excitation to an underground medium; receiving an electromagnetic signal transmitted through an underground medium, synchronously collecting a sound signal generated by electromagnetic excitation, and preprocessing the electromagnetic signal and the sound signal; performing structure imaging on the electromagnetic signal by adopting a frequency wave number migration imaging algorithm to obtain medium structure distribution; performing electrical parameter imaging on the electromagnetic signal by adopting a Born approximate inverse scattering imaging algorithm to obtain medium electromagnetic characteristic parameter distribution; sound source distribution reconstruction is carried out on the sound signals through a time reversal algorithm, and medium sound source response characteristic distribution is obtained; and inputting imaging results of the three algorithms into a pre-constructed deep reinforcement learning model for dynamic fusion to generate an underground medium comprehensive parameter reconstruction image.

A handheld imaging device (100) for medical use comprising: a housing (106); and a sensor base (101) connected to the housing (106). The sensor base (101) comprises a first acoustic transducer array for imaging a sub-dermal structure in a first plane and a second transducer array for imaging the sub-dermal structure in a second plane. A processor (205), operable under control of electronic program instructions, activates transducer elements of the first transducer array (102) (e.g. operable in continuous wave Doppler ultrasound mode) and the second acoustic transducer array (103) (e.g. operable in A-mode ultrasound) to transmit signals and process receive signals reflected by the sub-dermal structure (104) to display an image of the sub-dermal structure (104), e.g. a vein. The processor (205) calculates characteristics of the sub-dermal structure (104) from the first and second imaged planes. The device (100) may be used in medical ultrasound to facilitate procedures such as cannulation and venepuncture.

The utility model belongs to the field of projection imaging discloses a kind of mobile projection spray imaging structure, including base structure (1), imaging screen structure (2), connecting assembly (3) and projection structure (4), motor, it is characterized by: base structure (1) is used for motor fixation, the lower end positioning of connecting assembly (3), accommodate fog-making structure;Imaging screen structure (2) is used for continuous manufacturing and spraying fog particle;Connecting assembly (3) is the L type structure of rotation, connecting assembly (3) upper end connects the nozzle structure, the rotation of the lower end of connecting assembly (3) can drive connecting assembly (3) rotation;Projection structure (4) is used to the fog particle projection and form image to the fog particle projection of imaging screen structure (2).The utility model has following beneficial effects: structure has free steering, fog particle circulation, multiple projector source combination projection and so on Advantage, and compared with traditional spray imaging, its structure is simpler and more flexible.

Systems and methods for using cross-well seismic data to image reservoir structures illuminated with sources located in a lateral well and receivers located in one or more nearby lateral wells. The systems and methods include numerical FWI algorithms and workflows based on an elastic vertical transverse isotropy (VTI) anisotropic full waveform inversion (EFWI) engine. The EFWI engine is used for inversions based on the cross-well seismic data and additional data (e.g., well logs, vertical seism profiles). Inversion results include 2D / 3D maps of elastic properties (e.g., velocity, anisotropy, density, attenuation) of subsurface. The EFWI engine includes a wave propagation modeling accounting for various seismic waves propagating in the subsurface.

Disclosed herein are sonographic devices and methods of making and delivering a visualizable contrast medium composition, and methods for visualizing, diagnosing and treating structures in a subject.

The invention discloses a cerebral cortex penetrator small blood vessel magnetic resonance imaging method based on an inflow enhancement effect. The method comprises the following steps: modeling a penetrator small blood vessel to generate a blood vessel TOF (Time of Flight) image; calculating the blood vessel-grey matter contrast ratio of the blood vessel TOF image under different FAs and different TRs, and optimizing the FAs and the TRs according to the blood vessel-tissue contrast ratio; obtaining a structural image of the in-vivo brain tissue, performing cortex reconstruction, and calculating an angle of a surface normal of each cortex vertex relative to the B0 field to obtain a cortex angle graph; adjusting a single-layer blood vessel scanning plane angle according to the cortex angle diagram; and according to the optimized FA and TR and the single-layer blood vessel scanning plane angle determined in the step S4, carrying out magnetic resonance imaging on the cerebral cortex perforation small blood vessel. The invention further discloses a cerebral cortex puncturing small blood vessel magnetic resonance imaging device based on the inflow enhancement effect. According to the method and the device, magnetic resonance imaging of the cerebral cortex perforation small blood vessel can be realized under the non-invasive and contrast-agent-free conditions.

This invention discloses a device and its application method for food quality testing based on air-coupled ultrasound technology, relating to the field of fruit and vegetable quality testing technology. The device includes a base plate with two opposing detection mechanisms slidably mounted on it along the Y-axis, and a placement platform between the mechanisms. The placement platform is mounted on a horizontal moving mechanism and moves up and down along the Z-axis with the vertical moving mechanism, enabling sample adjustment in the X and Z-axis directions. The detection mechanisms hold the ultrasonic transducer using a four-jaw chuck. Utilizing the independent adjustment characteristics of the four jaws of the chuck, combined with the A-scan waveform fed back from the ultrasonic pulse transceiver, precise coaxial alignment of the acoustic centers of the transmitting and receiving probes is achieved. This invention effectively solves the problems of large mechanical vibration, difficulty in aligning the acoustic center of the probe, and difficulty in performing repeatable grid scanning in existing devices, providing a stable and reliable hardware platform for texture evaluation and internal structure imaging of fruits, vegetables, and other foods.

The application provides a high-resolution color holographic structure preparation method, and specifically comprises the following steps: S1, obtaining three-dimensional information of an object; S2, extracting and separating three primary color channels of an image array; S3, setting a convolution kernel, and respectively performing convolution on each color channel component of each image; S4, respectively performing pooling on the extracted data; S5, respectively extracting the numerical values of each same coordinate position in the set to form a new data set by using an addressing method; S6, designing three surface relief gratings with different periods according to a grating equation; S7, respectively performing point multiplication on the three primary color matrices and the grating data; S8, re-fusing the encoded three color channel data; and S9, manufacturing the data file into a moldable subwavelength level surface relief structure by a micro-nano processing method. The application converts surface relief micro-nano structures by separating, optimizing, fusing and encoding the multi-angle sampling image array data, and the imaging space has strong stereoscopic sense, bright color, strong detail performance and great imitation difficulty.

The application discloses a multi-modal imaging system and method based on an optical low-coherence interference field. The application can realize efficient interference signal collection and imaging under various OCT imaging modes in one set of system and imaging mechanism, and can realize mapping of imaging coordinate systems of various modes through linear transformation by combining the OCT axial imaging characteristics and the scanning setting under the same galvanometer mirror, so that the fusion display of multi-dimensional information in tissues can be completed without complex offline registration. The application can provide wide-area positioning imaging in a large depth range, structure imaging with high resolution and high signal-to-noise ratio, blood flow velocity detection and angiography with a large dynamic range, fast elastic imaging, and can also provide a real-time structure imaging mode with a large lateral field of view, so that a user can observe and operate according to the above information in a dynamic scene. The application has great significance for biomedical application scenes with multi-tissue information requirements.

The invention provides a multi-modal imaging system fusing physiological parameter monitoring, and the system comprises an ultrasonic collection module which collects ultrasonic detection signals according to a preset time sequence; the physiological acquisition module is used for acquiring time sequence reflecting physiological signals according to a preset time sequence; the feature fusion module is used for carrying out time registration on the ultrasonic detection signals and the time sequence physiological signals, extracting multi-modal features and fusing the multi-modal features to form a joint feature vector; the multi-modal estimation module is used for analyzing and obtaining an imaging result and multi-modal physiological parameters of the target tissue or blood vessel based on the joint feature vector; and the output module is used for outputting the imaging result and the multi-modal physiological parameters. According to the method, ultrasonic detection signals and various time sequence physiological signals are deeply fused, so that global accurate capture of vascular structures, dynamic characteristics and physiological time sequence information is realized, and a full-link closed loop of structural imaging, functional imaging and multi-parameter continuous monitoring is successfully cut through; and a high-precision, multi-dimensional and explainable solution is provided for cardiovascular risk assessment and individualized health management.

The embodiment of the utility model provides a defect detection device, and relates to the technical field of defect detection. The defect detection device provided by the embodiment of the utility model comprises a first conduction structure, a second conduction structure, an imaging unit, a control unit and a composite light source, the composite light source comprises a first light source, a second light source and a shell. The first light source is used for emitting a first light beam which is received by the imaging unit after being transmitted or reflected by a to-be-detected structure; the second light source is used for emitting a second light beam which is received by the imaging unit after being transmitted or reflected by the to-be-detected structure; the first light beam and the second light beam are different in propagation direction; the housing encapsulates the first light source and the second light source. According to the defect detection device provided by the embodiment of the utility model, the structure to be detected shakes and deviates less when moving on the conduction structure, the image of the structure to be detected shot by the imaging unit is clearer, and the detection precision of the defect detection device is improved.

The utility model provides an ultrasonic-photoacoustic composite laparoscope and an ultrasonic-photoacoustic imaging system. The ultrasound-photoacoustic composite laparoscope comprises an insertion part and a head end part, the head end part is connected to the far end of the insertion part, the ultrasound-photoacoustic composite laparoscope further comprises a light guide part, the light guide part is located outside the insertion part, and the far end of the light guide part is connected to the head end part. According to the ultrasonic-photoacoustic composite laparoscope, ultrasonic imaging, photoacoustic imaging and ultrasonic-photoacoustic imaging can be achieved, and therefore large-depth high-resolution, high-contrast and high-sensitivity structural imaging and functional imaging of an organizational body can be achieved, and the accuracy rate of in-vivo diagnosis is greatly improved. According to the ultrasound-photoacoustic composite laparoscope, the light guide part is externally connected to the insertion part, and the overall dimension of the insertion part can be smaller, so that the space utilization rate of the insertion part can be higher, and the effect of the ultrasound-photoacoustic composite laparoscope used for minimally invasive surgery is better.

The invention discloses a comprehensive inspection method for a deep horizontal grouting anti-seepage project of a refuse landfill, and relates to the technical field of horizontal grouting anti-seepage project inspection. The comprehensive inspection method comprises the steps that an original stratum permeability coefficient is calculated on site through a water injection test before grouting; detecting water quality; an anti-seepage grouting project is carried out; the stratum permeability coefficient after grouting is calculated; performing rock core inspection operation; cement-bentonite slurry is adopted for hole sealing operation; a measuring line is arranged, and the grouting seepage-proofing construction effect is analyzed; and leveling the field and carrying out long-term water quality monitoring operation. According to the comprehensive inspection method, a dynamic cooperation mechanism of geophysical prospecting guiding, fixed-point verification and long-term monitoring is constructed through the comprehensive inspection method of physical parameter detection, structure imaging, microscopic verification and environment feedback, multi-dimensional evaluation of the quality of the impermeable layer is achieved, limitation of a single detection means is avoided, and the detection efficiency is improved. A particle size analysis method and an X-ray diffraction method are adopted to carry out quantitative analysis on the filling degree of the cement grout, and errors caused by manual judgment are reduced.

1. The name of the design product: single photon emission and X-ray computed tomography system. 2. The use of the design product: functional and structural imaging, a nuclear medicine molecular imaging device integrating SPECT / CT multiple modalities three-dimensional medical image imaging and processing functions. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

System methods for generating a seismic image of a subterranean feature is provided. The method includes receiving an input gather representing the subterranean feature. The method further includes applying a pseudo offset header to the input gather to generate a pseudo-offset gather. Finally, the seismic image of the subterranean feature is generated by performing domain processing of the pseudo-offset gather. The method results in an improvement of structural imaging of obscured areas.

The invention provides a filtering structure sensitive to a low incident light angle and an imaging device, the corners of the filtering structure adopt arc-shaped modulation structures to replace conventional sharp corners, and the filtering spectrum of the arc-shaped modulation structures has low incident light angle sensitivity. The imaging device is integrated with a filtering structure sensitive to a low incident light angle, and is used for solving the problem of inconsistent response caused by the strong angle sensitivity of the imaging device under the application of a wide field of view.

The application discloses a kind of optical element surface thermosensitive defect nondestructive testing system and method, wherein optical element surface thermosensitive defect nondestructive testing system includes optical coherence tomography device, laser pumping device and signal processing and control module.The above technical scheme is used to a kind of optical element surface thermosensitive defect nondestructive testing system and method, utilizes laser pumping cooperation optical coherence tomography, realizes the rapid detection to optical element surface thermosensitive defect, possesses fast, nondestructive, micron level high-resolution structure imaging, nanometer level high-precision phase detection and so on Advantage, break through the technical bottleneck of traditional thermosensitive defect detection means " detection precision and detection efficiency cannot be obtained simultaneously ", simultaneously can gather the three-dimensional structure image and phase information of optical element, so as to obtain the accurate three-dimensional position information of thermosensitive defect in optical element including depth position information.

An apparatus for determining a shape of a luminal sample including: a catheter including a lens, the catheter disposed within a strain-sensing sheath such that the lens rotates and translates; a structural imaging system optically coupled to the catheter; a strain-sensing system optically coupled to the catheter; and a controller coupled to the strain-sensing system and the structural imaging system. The controller determines: a first position of the catheter relative to the luminal sample at a first location within the strain-sensing sheath; a second position of the catheter relative to the luminal sample at a second location within the strain-sensing sheath; a first strain of the strain-sensing sheath at the first location; a second strain of the strain-sensing sheath at the second location; a local curvature of the luminal sample relative to the catheter; a local curvature of the catheter; and a local curvature of the luminal sample.

This invention discloses a magnetic resonance imaging (MRI) method for evaluating the therapeutic effect of cerebral palsy rehabilitation in children, relating to the field of medical image processing technology. The method includes: acquiring structural imaging data (T1-weighted imaging and diffusion tensor imaging) and resting-state imaging data for each child patient; extracting brain and tissue boundaries from T1-weighted imaging using a 3D-Unet segmentation model; preprocessing the resting-state and structural imaging data and aligning them to brain boundaries, then registering these data to a standard brain template for children; acquiring and normalizing multiple clinical indicators based on the standard brain template, splicing them into multi-index vector data, inputting them into a pre-trained support vector machine model, and outputting differences in clinical indicators; determining abnormal brain regions for each child based on the differences, and finally generating a multimodal fusion index analysis report to observe changes in brain function and white matter integrity before and after rehabilitation.

The invention discloses an epilepsy focus detection method based on magnetic resonance imaging. The epilepsy focus detection method comprises the steps that MRI data and < 18 > F fluorescence deoxyglucose PET / CT scanning data of a patient before an operation are collected; processing the MRI data and the PET data; carrying out statistical analysis on the PET image, comparing a standard deviation with a normal database, and generating a QPET image; carrying out QPET-MAP (Quality Point of Emission Tomography Whether the cut QPET-MAP + area is mainly in the FCD type I or not is determined through postoperative pathological examination; and performing registration on the preoperative MRI and the postoperative MRI by using SPM12 software, and determining the excision integrity of the QPET-MAP + region. The QPET provides functional imaging data, and metabolic changes related to epilepsy are identified through quantitative analysis of PET scanning; the MAP provides structural imaging data, identifying a potential FCD by automated analysis of the MRI data; the detection rate of the FCD of the MRI negative epileptic is improved through the MAP. The detection sensitivity is improved, the specificity is also increased, and the epileptic focus is more accurately positioned. According to the invention, surgeons can be helped to more accurately position and cut epileptic lesions, and the operation effect is improved.

Systems and methods described herein relate to multi-modal defect inspection. An image of an inspected item and structural imaging data of the inspected item are obtained. The image is captured by at least one optical sensor and the structural imaging data is obtained via at least one structural imaging sensor. The image is processed via a first machine learning model to obtain a first defect classification. At least some of the structural imaging data is processed via a second machine learning model to obtain a second defect classification. An inspection result is automatically generated based on the first defect classification and the second defect classification. The inspection result is caused to be presented at a user device in association with an item identifier of the inspected item.

The invention belongs to the technical field of geophysical exploration, particularly relates to a seismic wave reflection full-waveform inversion method and system, and solves the problems of strong dependence on an initial model, local minimum difficulty and insufficient deep structure inversion precision in traditional full-waveform inversion. The method comprises the following steps: intercepting original seismic data; constructing an initial velocity model, and carrying out physical constraint on the initial velocity model; performing preprocessing and shot gather normalization processing on different types of original seismic data, and taking the preprocessed seismic data as observation data; starting from the initial velocity model, executing full-waveform inversion by utilizing observation data, performing gradient calculation by adopting a forward modeling result in each iteration of the inversion, and updating the velocity model according to the gradient; physical constraint is carried out after the speed model is updated every time, and meanwhile the gradient of the water body area is set to be zero. The stability and convergence speed of the inversion process and the accuracy of deep structure imaging are remarkably improved.

The packaging box with the holographic projection function comprises a box body, the box body comprises a bottom box and a cover body which are separable, the cover body is provided with a covering part, and the covering part is arranged in an opening and closing mode so that a through communication opening can be formed in the cover body; the inner card is arranged in the box body and comprises an imaging structure and a photomask structure which are connected in a foldable mode, and the imaging structure has a reflection imaging function; the bearing piece is used for accommodating the electronic product; in the packaging state, the imaging structure and the photomask structure are arranged in a stacked mode, the bearing piece is arranged on the top of the inner card, the cover body covers the bottom box, and the covering part blocks the communicating opening. In a projection state, the imaging structure and the photomask structure form a bending angle, the cover body is clamped at an opening between the photomask structure and the bottom box to form an accommodating space, the covering part is opened to form a communication port, and a preset reflection angle is formed between the imaging structure and the communication port. According to the packaging box with the holographic projection function, the packaging and holographic projection functions can be achieved, and resource waste and user consumption are reduced.

An apparatus coupling structure includes a plurality of coupled apparatus and an adjustment plate. The coupled apparatuses include a body frame formed with a fastening groove having a T-shaped cross section, and is installed on an installation surface. The adjustment plate is formed in a rectangular parallelepiped shape having a thickness capable of fitting into the fastening groove, long and short sides having a predetermined dimension. The dimension of the long side of the adjustment plate corresponds to a bottom-up dimension from the installation surface to a bottom of the body frame. The dimension of the short side of the adjustment plate corresponds to an inter-apparatus dimension of the adjacent body frames. The adjustment plate is fitted into the fastening grooves in a posture in which the short side is disposed between the adjacent coupled apparatuses, and the adjacent coupled apparatuses are coupled with the adjustment plate.

The invention discloses a regenerated SBS modified asphalt performance evaluation method based on bee-shaped structure quantitative characteristics. The method comprises the following steps: step 1, preparing an SBS modified asphalt test piece; step 2, AFM imaging of the bee-shaped structure; step 3, preprocessing the image; step 4, identifying a bee-shaped structure; 5, evaluating the aging degree; and step 6, microstructure recovery evaluation. According to the method, an atomic force microscope morphology scanning and image processing technology is utilized to carry out digital quantitative analysis on the microstructure change of the SBS modified asphalt in the aging and regeneration process, and the method can be used for evaluating the microscopic recovery difference of different regenerant systems (including aromatic hydrocarbon oil, a chain extender, a polyepoxy compound, a dioxazoline compound and the like). Microstructure recovery evaluation can be combined with macromechanics indexes. The method fills the blank of quantitative evaluation of the SBS modified asphalt microstructure, and has important theoretical and engineering values.

The present invention relates to the technical field of medical images, and specifically relates to a segmentation method and apparatus for magnetic resonance vascular architectural imaging (VAI). The method and apparatus involve: performing data preprocessing on a VAI image set; constructing a deep learning model, and using the VAI image set, which has been subjected to data preprocessing, to train the deep learning model, so as to optimize a model parameter; and using the trained and optimized deep learning model to perform automatic tumor region segmentation on a new VAI image, so as to generate a segmentation result. In the present invention, by using a deep learning model such as a convolutional neural network (CNN), the features of vascular architecture can be automatically learned, and accurate segmentation is performed with regard to microvascular changes in a tumor region.

The invention relates to the technical field of optical visual detection devices, and discloses a power takeoff gear optical visual detection device and method.The power takeoff gear optical visual detection device comprises a fixing frame, a mounting rack, an inner limiting structure, a gear driving structure, an imaging structure, a light supplementing lamp structure and a camera moving structure; precise assembly of all parts is realized through the fixing frame, the influence of assembly deviation on detection precision is avoided, the problem of shielding of the outer surface, the inner hole surface and the front and back surfaces of the to-be-detected gear is solved through the special design of the mounting frame and the inner limiting structure, so that a turnover mechanism is not needed, and the detection efficiency is improved. The problems of large secondary positioning error, low detection efficiency, permanent shielding of a clamping area and incapability of realizing full-surface detection of the gear in the traditional single-station serial overturning detection are thoroughly avoided, the gear driving structure realizes automatic rotation of the gear to be detected, and the gear driving structure is matched with the movable imaging structure and the light supplementing lamp structure to realize full-surface detection of the gear to be detected. The detection requirements of power takeoff gears of various specifications can be met, and the detection efficiency and the imaging quality can be improved.

The application discloses an imaging structure of a vehicle window, an imaging method and a vehicle, and belongs to the technical field of vehicles. The imaging structure of the vehicle window comprises a vehicle window glass, a first film assembly and a light source assembly. The first film assembly is arranged in the vehicle window glass, and comprises a first holographic film and a second holographic film which are arranged in a stacking mode along the thickness direction of the vehicle window glass. By arranging the first holographic film and the second holographic film in a stacking mode along the thickness direction in the vehicle window glass, the two holographic films occupy a smaller area of the surface of the vehicle window glass in the same area of the surface of the vehicle window glass, and the utilization rate of space is improved. When the light source assembly provides light of a corresponding preset wavelength, the first holographic film can generate a virtual image, the second holographic film can generate a real image, the same position of the vehicle window glass can provide a real image and a virtual image for a user as required, the diversity of imaging is improved, the use demand is better met, and the switching of the real image and the virtual image is facilitated by controlling light of different wavelengths.

The invention relates to the technical field of seismic signal processing and interpretation, and particularly discloses a seismic data reprocessing evaluation method and device, and the method comprises the steps: carrying out the reprocessing of old seismic data, and obtaining new seismic data; compared with the old seismic data, judging the new seismic data as follows; whether processing speed iteration is accurate, whether a stratum structure frame is reasonable, and whether a marker bed and a substrate are clear are determined; whether section analysis parameters are improved, whether a special geologic body is easy to identify, and whether data are real and reliable; based on the above judgment, a new seismic data volume which has advantages compared with old seismic data is selected as a final data volume. Compared with old seismic data, the method has the advantages that evaluation index judgment is performed on the new seismic data, and the new seismic data volume which has advantages compared with the old seismic data is selected as the final data volume, so that the amplitude fidelity, the signal-to-noise ratio, the resolution and the structural imaging precision of the seismic imaging processing result are remarkably improved, and the processing evaluation efficiency is improved.

The invention discloses a DAS data image generation method and device for underground structure visualization. Comprising the following steps: constructing a three-dimensional coordinate system, and obtaining an original sound wave equation, a strain rate parameter and a seismic source parameter of a vertical and transverse isotropic medium; simplifying the strain-displacement relational expression to obtain a conversion relation between the axial strain rate and the velocity component; speed components in the original acoustic wave equation are replaced based on the conversion relation, and an anisotropic acoustic wave equation suitable for DAS data is constructed; deducing a seismic source wave field extrapolation equation and a detection point wave field extrapolation equation according to the anisotropic acoustic wave equation; respectively inputting the focus parameter and the strain rate parameter into corresponding extrapolation equations to obtain a focus pressure wave field and a detection point pressure wave field; and performing mutual-closing imaging processing on the two types of pressure wave fields to obtain an initial result, and performing optimization processing to obtain an underground structure imaging result of the target DAS data. According to the invention, the precision and reliability of DAS data underground structure imaging under complex geological conditions are improved.