30 results about "Domain imaging" patented technology

The invention discloses an ultrafast three-dimensional wave number domain imaging method based on a row-column addressing ultrasonic array, which realizes ultrafast three-dimensional ultrasonic volume imaging by combining wave number domain image reconstruction based on row-column addressing (RCA) ultrasonic array probe data acquisition. According to the method, the three-dimensional volume imaging capability and channel number advantages of an RCA ultrasonic array probe and fewer emission times of plane wave imaging (PWI) are utilized, so that the volume acquisition rate is increased, and the data volume is reduced; according to the method, wave number domain image reconstruction is executed, rapid reconstruction of three-dimensional volume data can be realized by utilizing the calculation efficiency of fast Fourier transform, and the three-dimensional imaging requirements of high resolution and high frame rate are met. Compared with a time domain delay superposition algorithm, the method has remarkable technical advantages and is expected to be popularized and applied to medical and industrial detection scenes needing real-time three-dimensional volume imaging.

The utility model provides a double head-up display fusion imaging system, which relates to the field of automobiles, and generates a first light beam and a second light beam carrying different projection information through an image generation unit, and adopts a diffusion element to carry out uniform light diffusion on the first light beam and the second light beam. The diffused first light beam is projected to a first position of the windshield by adopting the reflector assembly, the diffused second light beam is projected to a second position of the windshield, the light beam projected to the first position generates a diffraction effect under the action of the holographic optical element, and a close-shot image is formed in front of the windshield; the light beam projected at the second position forms a long-shot image in front of the windshield so as to display the long-shot image information carried by the second light beam. In the imaging system, only one holographic optical element and one set of optical transmission system are needed to complete display of two paths of projection information, and the system is simple in structure and smaller in size.

The invention provides a calibration and interpretation method based on depth domain seismic data, and the method comprises the steps: S1, carrying out the speed structure analysis of VSP data, and carrying out the reliability evaluation; s2, well seismic calibration interpretation is carried out according to the VSP data; s3, longitudinally and transversely analyzing deviation distribution characteristics, and exploring main control factors of deviation distribution; and S4, according to the main control factors, obtaining a structure interpretation result map after depth correction. According to a calibration result, depth domain error characteristics are analyzed, depth domain interpretation longitudinal deviation is reduced, depth domain structure interpretation precision is improved, and the problem that depth domain imaging depth error correction is difficult is solved.

The application discloses a laser scanning welding system and method for ultrathin high polymer diaphragms, aiming at solving the technical problem that the ultrathin diaphragm is easy to deform during welding. The system comprises an ultrasonic welding module, a laser welding module and a spatial frequency domain imaging module. During welding, the edges of the upper frame of the diaphragm, the ultrathin high polymer diaphragm and the lower frame of the diaphragm are first positioned by preliminary spot welding through the ultrasonic welding module; then, the laser welding module utilizes the characteristics that the upper frame of the diaphragm is transparent and the lower frame of the diaphragm is light-absorbing, so that the laser penetrates the upper frame and performs scanning welding at the contact interface of the diaphragm and the lower frame, realizing fusion; in this process, the spatial frequency domain imaging module projects a grating pattern on the surface of the diaphragm and analyzes the deformation, calculates the welding thermal field distribution in real time, and then feeds back the control of the laser parameters, so that the deformation amount of the diaphragm is always within the controllable range. The application realizes high-precision, low-heat-affected and non-deformation welding of the ultrathin high polymer diaphragm.

This invention discloses a single-snapshot spatial frequency domain imaging and morphology correction method, system, and device, comprising: acquiring a set of monochromatic fringe images with different center wavelengths based on the same projected image; simultaneously inputting each monochromatic fringe image in the set into two parallel and independent deep learning networks, wherein the first deep learning network is used to extract the DC and AC components of the image; the second deep learning network is used to extract the wrapping phase component and fringe hierarchy information of the image, and perform absolute phase calculation to obtain the three-dimensional morphology before correction; performing height correction on the three-dimensional morphology and calculating the corrected diffuse reflectance image; performing background segmentation on the corrected diffuse reflectance image and spatially aligning it to the same coordinate system; and retrieving the optical characteristic parameters and physiological parameters of the tissue based on the spatially registered multi-wavelength diffuse reflectance data. This invention ultimately achieves real-time, wide-field, high-precision, and highly robust quantitative imaging of tissue physiological parameters.

This application discloses an optical system for detecting vertical laser beam collimation, belonging to the field of optical system technology. An imaging component, a lens, a semi-reflective beam splitter, and a second reflective component are arranged sequentially along the length of a mounting stage. A mounting slot for mounting the incident light component is provided on the mounting stage. The mounting slot, the semi-reflective beam splitter, and the first reflective component are arranged sequentially along the height of the mounting stage. The optical system for detecting vertical laser beam collimation disclosed in this invention has a simple structure and does not require adjustment each time it is used, eliminating the thermal drift error introduced by the electronic level in traditional methods. This eliminates the need for periodic calibration of thermal drift, enabling the system to achieve automated detection of the vertical beam deflection angle over long periods. Furthermore, it can calculate the beam spacing S based on the beam spot position acquired by the imaging component and then further calculate the inclination of the incident light.

The application discloses a kind of biological tissue optical characteristic parameter space frequency domain imaging method based on absorption rate, comprising the following steps: setting biological tissue Monte Carlo simulation parameter;Absorption rate-based biological tissue optical characteristic parameter look-up table is constructed by Monte Carlo simulation and one-dimensional zero-order Hankel transformation;For reference phantom projection cosine illumination pattern and collect fringe image;For the fringe image, Fourier transform, frequency domain filtering and inverse Fourier transform are carried out to obtain direct current component and alternating current component modulation degree;Reference phantom is replaced by measured biological tissue body, and the direct current component and alternating current component modulation degree are obtained by repeating the preceding 2 steps;Direct current and alternating current absorption rate measurement value are calculated;The minimum value of absorption rate Euclidean distance is calculated, and the absorption coefficient and reduced scattering coefficient measurement result are obtained by table lookup, to obtain optical characteristic parameter image.The application takes biological tissue absorption rate as the starting point of optical characteristic parameter inversion, significantly improves imaging sensitivity and reduces inversion error.

The application provides a middle-high orbit SAR fast time domain imaging method based on a self-defined scene coordinate system, and relates to the technical field of radar imaging. The method comprises the following steps: firstly, according to the complex imaging geometric characteristics of the middle-high orbit SAR in the large squint mode, the analytical expression of the wave number support area in the squint mode is calculated. Secondly, aiming at the characteristics of the middle-high orbit SAR imaging, such as the super wide swath and the super long synthetic aperture time, the application provides a fast time domain imaging algorithm, which can effectively process the imaging data and meet the imaging mode of the middle-high orbit SAR. Finally, according to the arrangement mode of the imaging grid, combined with the characteristics that the radar beam footprint is not fixed and the ground sidelobe direction is not consistent, the imaging algorithm can meet the complex imaging geometric conditions of the middle-high orbit SAR in different orbit segments, downward angles and squint angles, and can self-define a two-dimensional direction flexible and non-orthogonal scene coordinate system, so as to meet the imaging processing requirements of the middle-high orbit SAR in different imaging modes.

This application provides a method, system, device, and storage medium for realizing a depth-domain imaging surface. The method includes applying a total correction to preprocessed time-domain data to correct a fixed surface, obtaining a final reference surface; secondly, using the travel time information of the first arrival wave of an earthquake to invert the near-surface velocity structure, extracting the velocity and thickness of the weathering layer from the tomographic static correction, and calculating the time correction. This invention, through time-domain tomographic static correction, corrects the weathering layer data to the water table, effectively avoiding the difficulty of near-surface velocity modeling. It quickly and effectively achieves depth-domain modeling and imaging. By utilizing the concept of time-domain static correction, seismic data is corrected to the water table, thus avoiding near-surface velocity modeling and directly starting mid-to-deep modeling from the water table. This shortens the processing cycle and improves velocity accuracy, which is beneficial for seismic imaging.

This disclosure relates to the field of oil and gas exploration technology, and in particular to a method, apparatus, equipment, medium, and product for imaging domain reflection wave waveform inversion. The method includes: calculating the gradient corresponding to each offset and a pre-constructed velocity model; defining an objective function for imaging domain reflection wave waveform inversion based on the gradients corresponding to all offsets; calculating the update gradient of the objective function corresponding to the velocity model; updating the velocity model based on the update gradient; and performing imaging domain reflection wave waveform inversion based on the converged velocity model. By defining the objective function for imaging domain reflection wave waveform inversion and calculating the update gradient of the objective function corresponding to the velocity model, and updating the velocity model, imaging domain reflection wave waveform inversion is achieved. This directly improves the imaging quality in the depth domain and compensates for the shortcomings of reflection wave waveform inversion applications with depth domain imaging as the ultimate goal.

The invention discloses a three-dimensional VSP and ground seismic joint migration method, system and device and a storage medium, and relates to the technical field of seismic exploration, and the method comprises the steps: obtaining vertical seismic section data and ground seismic data, and obtaining a preprocessed data body; performing isotropic migration velocity modeling on the two sets of data volumes to obtain respective imaging gathers and migration profiles; performing unification processing on the imaging reference surfaces of the two sets of data volumes to obtain a processed imaging gather; performing well-ground joint migration on the processed imaging gather to obtain a well-ground joint OVT domain imaging gather; and azimuth anisotropy correction of travel time is carried out on the well-ground combined OVT domain imaging gathers, superposition processing is carried out on the corrected imaging gathers, and finally a well-ground combined migration imaging profile is obtained. According to the invention, effective fusion and high-precision imaging of well-ground data are realized, and the imaging precision of seismic data and the success rate of oil-gas exploration are improved.

The invention provides an optical non-vision-field imaging method and device based on Gaussian splashing, electronic equipment and a storage medium, and can be applied to the technical field of optical imaging. The method comprises the following steps: obtaining a Gaussian ellipsoid set in a hidden space through a parameter random initialization operation; performing forward rendering on the laser detection signals of the Gaussian ellipsoids in the Gaussian ellipsoid set to obtain predicted photon flight time distribution; calculating a loss value between the predicted photon flight time distribution and the actually measured photon flight time distribution of the Gaussian ellipsoid, and updating the attribute parameters of the Gaussian ellipsoid by using the loss value; updating the Gaussian ellipsoid set based on the updated attribute parameters of the Gaussian ellipsoids; iteratively executing forward rendering, loss value calculation, attribute parameter updating and Gaussian ellipsoid set updating operations to obtain a target Gaussian ellipsoid set; and rendering the target Gaussian ellipsoid set into a two-dimensional grid map, and smoothing the two-dimensional grid map to obtain an optical non-vision field imaging result of the hidden space.

The invention discloses an angle gather extraction method and device based on construction direction constraint, electronic equipment and a storage medium. The method comprises the following steps: extracting an underground structure angle based on an earlier-stage migration imaging result or a speed model; calculating a shot point end Poynting vector based on an underground structure angle and a wave equation forward propagation wave field; calculating a normal vector of an underground reflection interface based on the underground structure angle; calculating an underground local reflection angle and a local azimuth angle based on the shot point end Poynting vector and the normal vector; an angle domain imaging condition is applied, corresponding reverse time migration is stored based on an underground local reflection angle and a local azimuth angle to obtain an imaging value, and a high-precision omni-directional angle domain common imaging point gather is formed. According to the method, the angle gather precision loss caused by inaccurate detection point wave field Poynting vector direction is avoided, and the precision of the omnibearing angle domain common imaging point gather is improved, so that the seismic imaging quality is remarkably improved.

The invention relates to the technical field of oil field geological exploration, in particular to an omnibearing angle gather extraction method based on a wave equation. The method comprises the following steps: acquiring preprocessed seismic data and a velocity field; determining imaging grids, azimuth angles and reflection angle ranges and intervals; constructing a self-adaptive threshold condition, and screening to generate an effective point table; calculating propagation vectors in the effective point table; calculating an underground reflection angle and an azimuth angle based on the propagation angle geometrical relationship; constructing an angle domain imaging condition based on the wave field propagation vector; based on the azimuth angle and reflection angle information, the single-shot imaging value is reduced; and repeating all shot data, and superposing to obtain a final section and an omnibearing angle gather. According to the method, the azimuth angle and reflection angle information of the underground imaging point is fully utilized, a high-precision imaging profile and an all-dimensional angle gather are output, and powerful support is provided for follow-up work such as azimuth superposition imaging and crack prediction.

The invention relates to a DMS superlens imaging lens and system, and belongs to the field of optical lenses, the imaging lens is sequentially provided with a diaphragm and a first lens from an object plane to an image plane along an optical axis, and the object side surface and / or the image side surface of the first lens are / is a metasurface. According to the imaging lens, large-target-surface visible light imaging is achieved only through one super lens, the complexity of a system is reduced, the size and weight are reduced, and cost is reduced.

The invention discloses a sound wave pseudo-depth domain reverse time migration imaging method and device based on equivalent staggered grids. The method comprises the steps of obtaining a depth domain velocity field of a target work area, performing forward modeling by using an equivalent staggered grid discrete equation of a homogeneous isotropic medium two-dimensional sound wave equation, and generating an observation data shot record; re-sampling the longitudinal grid of the depth domain velocity field, and converting the depth domain velocity field into a pseudo depth domain velocity field; according to an offset parameter and the pseudo depth domain velocity field, generating a seismic source forward propagation wave field by using an acoustic wave pseudo depth domain equation based on an equivalent staggered grid; according to the observation data shot record, wave field back propagation is carried out by using an acoustic wave pseudo-depth domain equation based on an equivalent staggered grid, and a detection point back propagation wave field is generated; and generating a pseudo-depth domain imaging result by using a cross-correlation imaging relationship according to the back propagation wave field of the detection point and the forward propagation wave field of the seismic source. According to the method, more efficient and higher-resolution pseudo-depth domain imaging is realized.

The invention provides a common-aperture visible light and near-infrared polarization spectrum imaging device and method, and relates to the technical field of optical systems.The imaging device comprises a visible near-infrared telescope, a near-infrared imaging assembly, a visible light imaging assembly, a compensating mirror set, an LCVR assembly and an LCTF assembly; the system works cooperatively under a common-caliber framework composed of the near-infrared imaging assembly, the visible light imaging assembly and the light splitting assembly, visible light and near-infrared light are subjected to polarization spectrum imaging at the same time, the voltage of the LCVR assembly and the voltage of the LCTF assembly are accurately controlled, flexible modulation of the polarization state and wavelength of light is achieved, high-quality polarization spectrum information is obtained, and high-precision imaging is achieved. The polarization spectrum imaging system has the advantages of being high in efficiency and dynamic, effectively reducing light energy loss, achieving efficient polarization and spectrum modulation of a dynamic scene, and solving the technical problems that an existing polarization spectrum imaging system is large in size, low in integration level, low in response speed and serious in light energy loss.

The present application relates to the technical field of seismic exploration data processing, and particularly relates to a method for identifying abnormal shot deviation results from massive shot domain seismic imaging data. The method mainly solves the problem that the existing seismic imaging data processing method cannot accurately identify single shot data with abnormal amplitude interference in massive data. The method comprises the following steps: performing seismic imaging processing on common shot point gathers by a computing node; performing stacking processing on common shot point imaging data; performing stacking processing on the computing nodes with abnormal amplitude deviation results step by step, identifying the common shot point gather numbers with abnormal amplitude deviation results; and re-performing migration processing on the identified common shot point gather number data with abnormal interference. The method can efficiently identify and eliminate single shot data with abnormal amplitude interference in shot domain imaging results, and can accurately lock single shot data with abnormal migration of CPU or GPU high-performance computing nodes, thereby ensuring the accuracy and quality of the imaging results.

The application discloses a method and device for picking up a same phase axis, and the method comprises the following steps: fitting each same phase axis in an angle domain imaging point gather by using a quadratic function to obtain a fitting curve of each same phase axis in the imaging gather; determining a fitting curve of the imaging gather according to the fitting curve of each same phase axis in the imaging gather; determining a top and bottom boundary of the fitting curve of the imaging gather, and taking the fitting curve in a top and bottom boundary range of the imaging gather profile as a final picked fitting curve. The same phase axis in the gather can be fitted by the quadratic function, the picking up precision of the same phase axis can be improved without being limited by the resolution of the seismic data, and the picked same phase axis can well coincide with the real same phase axis. Meanwhile, the picking up of the same phase axis does not need manual intervention and assistance, and the picking up efficiency of the same phase axis can be improved.

This invention discloses a forward-looking multi-channel SAR motion error compensation method based on PGA and matrix beaming, applied in the field of radar technology. It addresses the problems of existing technologies where compensation effectiveness is highly dependent on navigation equipment accuracy and fails to fully compensate for two-dimensional spatially varying phase and linear error components. This invention obtains RD-domain imaging results by performing deskewing and Fourier transform on the echo with phase error after range compression and migration correction. Then, rootmusic angle measurement is performed on overlapping targets in the RD-domain imaging results, equating the deblurring problem to solving a linear inverse problem, resulting in an optimization problem. Solving the optimization problem yields unblurred RD-domain echoes. The PGA algorithm is then used to estimate higher-order errors in the deblurred echoes. The matrix beaming algorithm is then used to estimate residual linear errors. Finally, the estimated motion error terms are incorporated into the coherent accumulation process to obtain the motion error-compensated imaging result.

The present application relates to a kind of spherical fruit surface diffuse reflectance correction measurement method in spatial frequency domain imaging, solve when measuring the diffuse reflection of spherical fruit in spatial frequency domain imaging system is influenced by sample surface height, reflection angle and light incidence angle.This method includes the following steps: one, projection obtains structured light fringe diagram;Two, fringe diagram whiteboard correction;Three, obtain fruit diffuse reflectance and three-dimensional profile;Four, height correction is carried out to diffuse reflectance, and the reflection angle of spherical fruit surface is obtained from height;Five, angle correction is carried out to the diffuse reflectance after height correction, obtain the final diffuse reflectance of spherical fruit;Six, the optical property of diffuse reflectance is reversed to obtain absorption coefficient and reduced scattering coefficient.This method proposes a kind of diffuse reflection correction method suitable for spherical fruit, corrects the diffuse reflectance measurement error caused by fruit surface height and angle, and the diffuse reflectance of corrected fruit and its reversed optical property are more in line with the characteristics of fruit texture uniformity.

The invention discloses an imaging device, and belongs to the technical field of monitoring devices. The imaging device comprises a box body, an infrared light-transmitting sheet, a short-wave infrared imaging assembly and a narrow-band pass filter, an observation window is arranged on one side of the box body, and cold air can be introduced into the box body; the infrared light-transmitting sheet is arranged at the observation window and can transmit a short-wave infrared spectrum; the short-wave infrared imaging assembly is arranged in the box body and is used for carrying out induction imaging on the short-wave infrared spectrum; the narrow-band-pass optical filter is arranged in the box body and is arranged on one side, close to the infrared light-transmitting sheet, of the short-wave infrared imaging assembly; the narrow-band-pass optical filter is used for selecting a spectrum in a preset range for imaging, and the preset range is located in an acquisition range of the short-wave infrared imaging assembly. The imaging device disclosed by the invention can be used for clearly imaging the aluminum plate blank under a complex working condition.

The invention discloses a multi-node parallel output angle gather extraction method and device based on adaptive decomposition, electronic equipment and a storage medium. The method comprises the following steps: calculating the number of nodes for angle gather output; decomposing along the Y direction based on the node number, and calculating the output range of each node; calculating a shot point end Poynting vector and a detection point end Poynting vector in the forward transmission process and the backward transmission process of the wave equation by adopting a finite difference algorithm, and further calculating an underground local reflection angle and a local azimuth angle; and respectively applying an angle domain imaging condition based on the output range of each node, storing corresponding reverse time migration according to the local reflection angle and the local azimuth angle to obtain an imaging value, obtaining a local angle domain common imaging point gather of each node, and reducing the local angle domain common imaging point gather as an overall angle domain common imaging point gather. According to the method, the computer memory requirement required by the angle gather can be effectively reduced, the calculation efficiency is improved, and the calculation cost is reduced.

This invention relates to the field of petroleum exploration. It proposes a method, system, equipment, and medium for exploring seafloor geological structures. The method includes: acquiring raw data using OBN technology; swapping the shot points and receiver points corresponding to the raw data; correcting the swapped shot points to be in the same plane as the swapped receiver points; picking up seismic first arrivals from the shot points and receiver points in the same plane using a preset neural network model; and inputting the picked-up seismic first arrivals into a preset near-surface velocity model to obtain seafloor geological structure exploration information. This invention achieves high-precision inversion of exploration blind spots in complex seafloor topography and deep-water areas. In the time domain, it can obtain high-precision static correction values, improving time-domain structure and imaging quality. In terms of depth-domain imaging, the final model has a high degree of agreement and consistency with the actual subsurface structure, improving the final geological imaging quality.

A method for establishing a surface velocity model using geological reconnaissance maps and micrologging technology, relating to the field of geophysical exploration. Technical solution: In geodetic coordinates, the lithology and coordinate information in the geological reconnaissance map are used to determine the lithology distribution within the study area; all micrologging points collected within the study area are finely interpreted to obtain velocity information for each point; for all micrologging points within the same lithology area, a triangular mesh is constructed using triangular mesh interpolation and interpolation is performed; the above operation is repeated for all areas with different lithologies within the study area until all lithology areas are completed; for areas where a triangular mesh cannot be formed, the velocity is filled using the average value of adjacent meshes of different lithologies. Beneficial effects: This invention, by combining geological reconnaissance maps and micrologging technology, improves the accuracy of the velocity model, optimizes depth domain imaging effects, and increases production efficiency, providing more reliable technical support for depth domain imaging in oil and gas exploration.

The application provides a L 1 / 2 A regularized synthetic aperture radar imaging method, system and storage medium. The method comprises: obtaining echo data of sampling points; decomposing an imaging operator based on a wave number domain imaging algorithm into a phase correction operator and an azimuth correction operator; using a fast solution L 1 / 2 The regularized threshold iteration algorithm processes the echo data to obtain a first intermediate quantity; the first intermediate quantity is used as an operator for iterative calculation until a preset condition is met, and a synthetic aperture radar imaging model is obtained. The embodiment of the application uses an approximate observation operator instead of matrix multiplication based on an approximate observation sparse imaging method, constructs a new sparse autofocusing model, greatly reduces the dimension of the observation matrix, and improves the reconstruction efficiency and imaging quality.

The utility model discloses an imaging optical system, which relates to the technical field of desktop display and comprises a curved mirror, an image source and a spectroscope. The curved mirror is provided with a first side and a second side which are oppositely arranged, and a first light splitting surface is arranged on the surface of the first side or the second side; the image source is arranged on the first side of the curved mirror, and imaging light of the image source is circularly polarized light capable of penetrating through the first light splitting surface when reaching the first light splitting surface; the spectroscope is arranged on the second side of the curved mirror, a first quarter-wave plate and a first reflection type polaroid are arranged on the side, facing the first light splitting surface, of the spectroscope, and the first reflection type polaroid reflects linearly polarized light penetrating through the first quarter-wave plate to the first light splitting surface; and the imaging light is reflected by the first light splitting surface again, penetrates through the first quarter-wave plate and the first reflective polarizer, and is emitted from the imaging optical system. According to the technical scheme provided by the utility model, the thickness of the optical system can be effectively reduced while virtual image imaging is realized.

The invention discloses an intelligent infrared thermal radiation physiotherapy lamp based on single-snapshot multi-frequency demodulation-spatial frequency domain imaging, and relates to the technical field of infrared thermal radiation physiotherapy lamps. The multi-modal skin injury assessment model integrates the double advantages of convolutional neural network image recognition and random forest multi-parameter analysis, can output a three-level curative effect assessment result in real time, and drives the infrared regulation and control module to dynamically optimize the wavelength, the light intensity and the irradiation time; the temperature control device and the emergency braking system form a double-guarantee mechanism, so that the skin temperature is strictly stabilized in a safety interval of 40-50 DEG C, and the risk of thermal damage is effectively avoided; through the combination of a single-snapshot multi-frequency demodulation-spatial frequency domain imaging technology and an intelligent regulation and control system, the problems that an existing device cannot monitor the skin state in real time, treatment parameters are single and fixed, and personalized adjustment is lacked are effectively solved, and the accuracy, safety, efficiency and application range of infrared thermal radiation physiotherapy are remarkably improved.

The invention relates to the technical field of image processing, in particular to a pseudo-depth domain reverse time migration imaging method and device, equipment and a medium. The method comprises the following steps: re-sampling a longitudinal grid of a depth domain velocity field to generate a pseudo depth domain velocity field; transmitting the data to a GPU, and generating a detection point back propagation wave field and a seismic source forward propagation wave field according to a pseudo depth domain wave field propagation equation; generating a pseudo-depth-domain imaging result by the detection point back-propagation wave field and the seismic source forward-propagation wave field through a cross-correlation imaging condition, and filtering the generated pseudo-depth-domain imaging result; converting the filtered pseudo depth domain imaging result into a depth domain imaging result by using a time-depth relationship; and the offset result is transmitted to the CPU for output. According to the pseudo depth domain reverse time migration imaging method based on GPU / CPU collaborative acceleration, on the premise that simulation precision is guaranteed, calculation efficiency can be effectively improved, calculation time consumption is reduced, a more efficient strategy is provided for data processing of a large work area, and calculation cost is saved.

The application discloses a kind of based on row-column addressing ultrasonic array's superfast three-dimensional wave number domain imaging method, based on row-column addressing (RCA) ultrasonic array probe data acquisition, combined with wave number domain image reconstruction, realize superfast three-dimensional ultrasonic volume imaging.This method uses the three-dimensional volume imaging capability and channel number advantage of RCA ultrasonic array probe, and the transmission number of plane wave imaging (PWI) is less, accelerates volume acquisition rate and reduces data volume;Perform wave number domain image reconstruction, utilize the calculation efficiency of fast Fourier transform, can realize the fast reconstruction of three-dimensional volume data, meet the three-dimensional imaging needs of high resolution, high frame rate.This method has significant technical advantages compared with time domain delay-and-sum algorithm, and is expected to be popularized and applied to medical and industrial detection scenarios requiring real-time three-dimensional volume imaging.