58 results about "Lateral resolution" patented technology

A method for recognizing a dominant carbonate rock reservoir in a complex facies zone, comprising: determining a lithologic type and lithologic physical properties of a study section (S100); carving out a development pattern configuration of a special geologic body in the lithologic type (S200); on the basis of the development pattern configuration, using an iterative modeling method to construct an inversion low-frequency model under a phase controlled constraint (S300); using the inversion low-frequency model to perform multi-parameter pre-stack inversion of the study section to obtain an inversion parameter data volume of the study section (S400); and using a multi-parameter intersection method to predict a dominant reservoir distribution in the inversion parameter data volume (S500). Also provided are an apparatus for recognizing a dominant carbonate rock reservoir in a complex facies zone, and an electronic device. By means of the phase controlled constraint, a configuration attribute representing geomorphic facies and lithologic inversion representing lithologic facies are comprehensively considered, and the attribute lateral resolution and the inversion longitudinal resolution are combined, thereby achieving high-precision recognition of a dominant carbonate rock reservoir in a complex facies zone.

Changes in tissue stiffness have long been associated with disease. Systems and methods for determining the stiffness of tissues using ultrasonography may include a device for inducing a propagating shear wave in tissue and tracking the speed of propagation, which is directly related to tissue stiffness and density. The speed of a propagating shear wave may be detected by imaging a tissue at a high frame rate and detecting the propagating wave as a perturbance in successive image frames relative to a baseline image of the tissue in an undisturbed state. In some embodiments, sufficiently high frame rates may be achieved by using a ping-based ultrasound imaging technique in which unfocused omni-directional pings are transmitted (in an imaging plane or in a hemisphere) into a region of interest. Receiving echoes of the omnidirectional pings with multiple receive apertures allows for substantially improved lateral resolution.

The application relates to a moving target constant resolution ISAR imaging method and device based on track information. The method comprises the following steps: obtaining a speed vector of a moving target by processing track information, inputting the speed vector into a pre-constructed extended Kalman filter to obtain an attitude angle of the moving target at each time, converting the attitude angle of the moving target in a three-dimensional space into an actual rotation angle in two-dimensional imaging through a rotation matrix, obtaining an effective rotation angle according to the actual rotation angle, accumulating the effective rotation angles of continuous multiple time points until the accumulated angle meets a preset horizontal resolution threshold, taking the time corresponding to the accumulated angle as an imaging window length, accumulating the effective rotation angles according to the preset horizontal resolution threshold, obtaining multiple imaging window lengths, obtaining multiple target images, and realizing imaging of the moving target. The method has noise stability in the imaging process of the target, and further improves the target imaging quality.

This application relates to the field of optical technology and discloses an optical component. A beam splitter assembly intersects with a first optical path. The beam splitter assembly includes a first beam splitter and a second beam splitter. The first beam splitter intersects with a first beam to transmit a first split beam from the first beam. The second beam splitter intersects with a second beam to transmit a second split beam from the second beam. An optical modulator intersects with the first and second beam splitters to modulate their phase. Lens assemblies are respectively disposed on a second and a third optical path to amplify and rotate the first split beam before projecting it onto a first region to form a first pattern. Lens assemblies amplify and rotate the second split beam before projecting it onto a second region to form a second pattern. The horizontal resolution of the first and second patterns is greater than their vertical resolution. The first and second patterns combine to form an elongated image. This provides an optical component and a head-up display system for improving horizontal resolution and image size.

The present application relates to the field of optical imaging technology, and particularly relates to a full-depth-range high-lateral-resolution OCT imaging method, system and storage medium based on interference synthetic aperture. The OCT imaging method comprises sample positioning: moving the point spread function of the sample to a region close to 0 optical path; collecting three-dimensional original data; pre-processing the collected three-dimensional original data to obtain complex signals containing amplitude and phase information; performing three-dimensional Fourier transform on the scattering potential distribution based on a synthetic aperture algorithm to obtain frequency domain signals, correcting the nonlinearity of the spatial frequency by interpolation or frequency domain filtering before interpolation, and then performing inverse Fourier transform to reconstruct the spatial distribution of the scattering potential and obtain three-dimensional image data. The detail information of the defocus region is recovered, high-resolution imaging in the full depth range is ensured, and the inherent contradiction between lateral resolution and focal depth is broken through.

The application discloses a method for generating an ultralong focal depth array beam, and belongs to the technical field of grating manufacturing. The method comprises the following steps: constructing a Bessel beam excitation phase and a circular Airy beam excitation phase, constructing a composite phase distribution according to the array Bessel beam excitation phase and the array circular Airy beam excitation phase, and encoding the composite phase distribution to a metasurface; irradiating the metasurface with a linear polarization state plane wave, so that a left-handed circular polarization component excites an array Bessel beam, and a right-handed circular polarization component excites an array circular Airy beam; the array circular Airy beam is converted into a Bessel propagation mode after self-focusing, is spliced with the array Bessel beam in an axial direction to form a continuous light field distribution, and an ultralong focal depth array beam is obtained. The method can be applied to the fields of parallel laser processing, three-dimensional microscopic imaging and microparticle manipulation, and can extend the focal depth of the array Bessel beam while keeping the transverse resolution close to the diffraction limit.

The invention discloses a river full-section acoustic flow velocity measurement method and a flow velocity meter, the river full-section acoustic flow velocity measurement method combines a time difference method and a frequency difference method, utilizes the advantage of accurate measurement of the frequency difference method in a high flow velocity scene, makes up for the measurement insufficiency of the time difference method in high flow velocity, high sediment content and bubble content, and improves the measurement accuracy. The measurement precision in the wet season is improved, and flood disasters are warned in advance; the time-difference method has the advantages of accurate measurement and full-section measurement under normalization and low flow velocity. The two parts are measured in real time and are compared and verified, so that the high-precision measurement of the whole section is realized, and the section flow rate coverage rate is increased from 75-85% of the traditional ADCP to more than 98%; the vertical resolution reaches 0.1-0.5 m, and the transverse resolution reaches 1-5 m.

Changes in tissue stiffness have long been associated with disease. Systems and methods for determining the stiffness of tissues using ultrasonography may include a device for inducing a propagating shear wave in tissue and tracking the speed of propagation, which is directly related to tissue stiffness and density. The speed of a propagating shear wave may be detected by imaging a tissue at a high frame rate and detecting the propagating wave as a perturbance in successive image frames relative to a baseline image of the tissue in an undisturbed state. In some embodiments, sufficiently high frame rates may be achieved by using a ping-based ultrasound imaging technique in which unfocused omni-directional pings are transmitted (in an imaging plane or in a hemisphere) into a region of interest. Receiving echoes of the omnidirectional pings with multiple receive apertures allows for substantially improved lateral resolution.

The invention discloses a shale-oil-rock facies combined seismic facies inversion method based on deep learning, and the method comprises the steps: carrying out the preprocessing of a pre-stack angle gather and logging data, and carrying out the seismic facies division of seismic data through employing a K-Means clustering algorithm; establishing a three-dimensional convolution deep learning model based on a space-time attention mechanism, introducing a position coding theory in natural language processing to convert a seismic facies classification result into a time sequence code, and introducing the time sequence code into the three-dimensional convolution deep learning model to form a seismic facies control deep learning model; and training the seismic phased deep learning model by adopting a semi-supervised learning method to obtain inversion longitudinal and transverse wave velocity and density result transverse resolution. Transverse resolution of longitudinal and transverse wave velocity and density results of phase-controlled deep learning inversion is superior to that of a non-phase-controlled inversion result, and the thickness of an inverted thin layer is far smaller than one fourth of the wavelength of seismic waves.

The invention relates to the technical field of geophysical exploration, in particular to an electromagnetic method and microseismic monitoring combined observation inversion constraint method, medium and equipment, and the method comprises the following steps: constructing an underground resistivity model and a speed model; according to the corrected travel time difference, constructing an inversion objective function based on the micro-seismic first-arrival wave travel time difference, and obtaining speed model parameters through accompanying state method first-arrival wave travel time difference tomography; and constructing a magnetotelluric inversion objective function by using a regularization method, adding the velocity transverse gradient of the velocity model parameter discrete grid to a smooth constraint term of the resistivity model, and solving the magnetotelluric inversion objective function by using global optimization inversion to obtain an inverted resistivity model. According to the method, the speed model obtained through microseism monitoring travel time inversion has the characteristic of high lateral resolution, the lateral smoothness of the resistivity model can be reduced through natural exponential function weighting, and the lateral resolution of resistivity inversion is improved.

This invention provides an electrically controlled microsphere-enhanced liquid crystal layer, a differential confocal microscopy imaging method and system. The electrically controlled microsphere-enhanced liquid crystal layer includes an electrically controlled liquid crystal layer and a microsphere array disposed on the electrically controlled liquid crystal layer. The method includes the following steps: converting a single-wavelength parallel beam into circularly polarized light, focusing it through an objective lens and an objective lens driver, and scanning the sample through the electrically controlled microsphere-enhanced liquid crystal layer; applying a voltage to the electrically controlled microsphere-enhanced liquid crystal layer; collecting the reflected or scattered return beam from the sample, splitting it into two probe beam paths, and generating corresponding first and second images; calculating the image quality evaluation value of the two-dimensional lateral image based on this, and using this as a feedback signal to apply a voltage to the electrically controlled microsphere-enhanced liquid crystal layer. This invention introduces an electrically controlled microsphere-enhanced liquid crystal layer into the imaging path of a confocal microscope, achieving a significant enhancement in lateral resolution. By controlling the liquid crystal with an applied voltage, the equivalent refractive index can be dynamically adjusted.

The invention discloses a single-molecule positioning microscopic imaging device and method based on structured light illumination. In an excitation path, a modulated laser beam emitted by a spatial light modulator generates a dynamic stripe illumination pattern on a sample plane, and three phase shift patterns are adopted in each transverse direction, so that six different patterns are generated; in the emission path, the fluorescence signal is coherently collected by a dual objective, while four phase images are captured, each image corresponding to a particular phase delay. By using the interference effect in the excitation path and the emission path, the improvement of the two-time transverse resolution and the five-time axial resolution is simultaneously realized in the single-molecule positioning microscope, the difference between the axial resolution and the transverse resolution is effectively bridged, and the isotropic nano-scale three-dimensional resolution is realized.

The present disclosure relates to ultrasound-based strategies and techniques that are specially designed for time-resolved simultaneous cardiac tissue visualization and intracardiac flow instability mapping. First, to achieve high-resolution tissues images while also acquiring flow data, we devised an acquisition scheme which consists of two batches. The first batch is dedicated to tissue imaging, where we transmit a series of diverging waves emitted from different virtual source locations. These pulses have a single pulse-cycle to optimize axial resolution and are coherently compounded for improving lateral resolution. This paradigm generates tissue images with an improved resolution, allowing for real-time guidance at frame rates up to 50 fps. The second batch is dedicated for flow imaging where all diverging waves are transmitted from the same virtual source location. These flow pulses have a 5-cycle pulse length for improved flow signal. The length of this batch can be adjusted, but our experiments use a length of 64. The final transmission scheme alternates between the tissue batch and flow batch.

The application discloses a kind of estimation method and system based on high frequency information gravity-magnetic anomaly lateral resolution, comprising the following steps: obtaining gravity-magnetic anomaly data, griding gravity-magnetic anomaly data, obtaining griding gravity-magnetic anomaly data;Low-pass filtering is carried out to the griding gravity-magnetic anomaly data, and regional gravity-magnetic anomaly data are obtained;Based on the griding gravity-magnetic anomaly data and regional gravity-magnetic anomaly data, subtract to obtain residual gravity-magnetic anomaly data;Change geometric scale factor, obtain residual gravity-magnetic anomaly data of different scales;The residual gravity-magnetic anomaly data of different scales are compared and analyzed, and the preset scale that presents residual gravity-magnetic anomaly distribution characteristics is obtained, and the estimation of gravity-magnetic anomaly lateral resolution is realized.The lateral resolution of gravity anomaly or magnetic anomaly estimated by the method can evaluate the related geological problems that can be solved by existing gravity-magnetic data, and can improve the efficiency of gravity-magnetic data processing and interpretation.

A kind of vehicle-mounted ranging device and method, belong to distance detection technical field, device is by short coherence broadband light source, fiber coupler, wavelength division multiplexer, beam expander, optical splitter, lens, filter, area array camera and vehicle-mounted computer etc.; by vehicle-mounted computer real-time comparison two cameras image difference and the size of set threshold value, when vehicle-mounted computer determines that image difference is greater than threshold value, then it is explained that there is obstacle at the distance L in front of vehicle, vehicle-mounted computer issues alarm signal at this time.The present application adopts two light sources and two cameras, imaging twice in the same time, by the two images obtained are subtracted, eliminate interference fluctuation;The present application uses short coherence light interference technology, improves signal-to-noise ratio, can detect weak reflection signal;The present application selects broadband light source, longitudinal resolution is high, guarantees measurement accuracy while saves extra timing circuit;The present application uses area array camera to collect image, speed is fast, the number of imaging dot matrix is large, and lateral resolution is high.

This utility model discloses a photoacoustic probe and a photoacoustic imaging system. The photoacoustic probe includes a tube, a light guide, a signal line, a lens group, a reflective element, and an ultrasonic transducer. The light guide and the signal line pass through the tube along its axial direction. The signal line is electrically connected to the ultrasonic transducer. The lens group, reflective element, and ultrasonic transducer are all disposed within the tube and arranged sequentially along its axial direction. The lens group is located on the light-emitting side of the light guide and includes at least one curved lens. The light guide guides the light beam and directs it to the lens group. The lens group converges the light beam, directing it to the reflective element. The reflective element reflects the converged light beam, allowing it to pass through the tube and exit onto the target area within the imaging region. The ultrasonic transducer converts the ultrasonic waves received from the target area into electrical signals. By converging the light beam through the lens group, the size of the light spot illuminating the target area is reduced, thus improving the lateral resolution.

The invention relates to the technical field of optics, and discloses an optical assembly, a first light path intersects with a first light splitting surface and a second light splitting surface, the first light splitting surface intersects with a first split light to refract the first split light and form a second light path projecting along a second direction, and the second light splitting surface intersects with a second split light to form a second light path projecting along a second direction. The second light beam is refracted, and a third light path projected in the second direction is formed; the two first lens assemblies are arranged on the second light path and the third light path respectively so as to amplify and rotate the first split light and then project the first split light to the first area to form a first pattern, and to amplify and rotate the second split light and then project the second split light to the second area to form a second pattern. The transverse resolution of the first pattern and the second pattern is larger than the longitudinal resolution, and the first pattern and the second pattern are combined to form a long-strip-shaped picture. The invention provides an optical assembly for improving transverse resolution and picture and a head-up display system.

The application discloses a kind of for ship collision bridge body monitoring optical fiber probe imaging performance estimation method and system, it is related to optical fiber probe imaging performance evaluation technical field, it is applied to side-looking type optical fiber OCT probe;Side-looking type optical fiber OCT probe is optical fiber probe for ship collision bridge body damage monitoring;Wherein the method comprises: constructing the geometric model of side-looking type optical fiber OCT probe;Based on geometric model, the near-end mode field radius and far-end mode field radius of illumination beam are calculated respectively;If near-end mode field radius is greater than or equal to far-end mode field radius, then based on the first estimation formula group, the imaging performance of side-looking type optical fiber OCT probe is calculated;Imaging performance includes focusing depth and lateral resolution;If near-end mode field radius is less than far-end mode field radius, then based on the second estimation formula group, the imaging performance of side-looking type optical fiber OCT probe is calculated.The present application alleviates the technical problem that traditional estimation method exists and is difficult to accurately predict the imaging performance of optical fiber probe under different geometric parameter states.

The application provides a transverse high-resolution terahertz time-domain spectrum imaging method and system, and relates to the technical field of terahertz imaging. The method comprises the following steps: obtaining a terahertz time-domain pulse sampling signal; performing Fourier transform on the terahertz time-domain pulse sampling signal to obtain a frequency spectrum; performing inverse Fourier transform on the frequency spectrum after high-pass filtering and low-pass filtering processing to obtain a time-domain signal; establishing a point spread function; performing deconvolution operation on the time-domain signal and the time-domain form of the established point spread function to obtain an image reconstruction signal; and determining a transverse high-resolution terahertz time-domain spectrum image according to the image reconstruction signal of each sampling point in a scanning area and the time of flight of the terahertz pulse wave. Through the method, image blurring caused by terahertz beam distortion can be better eliminated, and the transverse resolution of the terahertz imaging system and the quality of the reconstructed image can be improved.

This invention relates to an isotropic three-dimensional super-resolution imaging method using a single objective lens, comprising the following steps: outputting a linearly polarized excitation beam through a picosecond pulsed laser and an outputting a linearly polarized loss beam through a nanosecond pulsed laser; adjusting the polarization direction and power of the excitation and loss beams using a half-wave plate and a polarizing beam splitter; incident the loss beam onto a spatial light modulator; modulating the light field by loading a preset phase diagram to generate three focal points with different topological charges, axial positions, and energy distributions; and modulating the polarization state of the focal points using a high-order vortex phase delay plate to separate the loss beams with different polarization components. This invention achieves an imaging resolution of less than 100 nm in both the lateral and axial directions, with similar lateral and axial resolution performance. In three-dimensional super-resolution imaging, it can accurately reflect the true three-dimensional structure of an object. The imaging resolution is directly proportional to the intensity of the loss beam; the stronger the loss beam intensity, the higher the three-dimensional imaging resolution.

The application discloses a single-photon three-dimensional imaging system based on surface array detection, which comprises a multi-beam laser point array module, a common-aperture scanning transceiver module, a synchronous control module, an image processing module and a transceiver coupling registration module, and provides a system registration method to solve the great difficulty in transceiver matching of a single-photon three-dimensional imaging system using multi-beam emission and array detector; the multi-beam laser point array module and the common-aperture scanning transceiver module are controlled by the synchronous control module to realize high-sensitivity detection and fast imaging of a target based on multi-beam two-dimensional laser point array scanning, and an image processing algorithm based on sub-pixel scanning and calculation imaging can effectively improve the lateral resolution of long-distance imaging under a limited divergence angle. The system and method of the application realize accurate matching of multi-beam illumination and array detection in long-distance single-photon three-dimensional imaging, greatly improve energy efficiency and measurement speed, and obtain a longer detection distance and higher imaging quality.

This application discloses a method, apparatus, device, and storage medium for constructing a velocity model, belonging to the field of seismic exploration technology. The method includes: acquiring seismic data of the exploration area, including first arrival times; constructing a first velocity model based on the seismic data; performing pre-stack depth migration processing on the seismic data based on the first velocity model to obtain a migration stacking profile and migration gathers; determining a reference reflecting surface in the migration stacking profile, and determining the curvature corresponding to common reflection points in the reference reflecting surface based on the migration gathers; determining optimization parameters based on the curvature corresponding to the common reflection points, and optimizing the first velocity model using the optimization parameters and a first near-surface velocity to obtain a second velocity model; and determining the propagation velocity of seismic waves in the subsurface medium layer of the exploration area using the second velocity model and the seismic data. This method can improve the accuracy of the velocity model, the lateral resolution, precision, and accuracy of seismic data imaging.

The application relates to the technical field of photoacoustic microscopic imaging, and discloses a self-adaptive photoacoustic microscopic imaging method, device and equipment. The method is applied to a self-adaptive photoacoustic microscopic imaging device, and the device comprises an initial photoacoustic microscopic imaging component, a continuous wave laser and a spatial light modulator. The method comprises the following steps: controlling the initial photoacoustic microscopic imaging component to emit first pulsed laser and second pulsed laser, and controlling the continuous wave laser to emit continuous wave laser; and controlling the spatial light modulator to perform wavefront modulation on the first pulsed laser, the second pulsed laser and the continuous wave laser; wherein when performing the wavefront modulation, the spatial light modulator takes a differential photoacoustic signal as feedback. The application uses a greedy algorithm to optimize a phase diagram displayed on an SLM, and dynamically compensates aberration caused by an absorber point by point through a GR effect, so that microstructures that cannot be distinguished by a traditional PAM are revealed, and the compensation of the aberration can effectively improve signal strength and lateral resolution.

The invention discloses a method for improving the isotropy of continuous section type body electron microscope data, and the method comprises the steps: obtaining original three-dimensional image data through a continuous section type body electron microscope, and enabling the axial resolution of the original three-dimensional image data to be lower than the transverse resolution and the longitudinal resolution; performing noise reduction processing on the original three-dimensional image data; and training an interpolation enhancement network based on the denoised original three-dimensional image data, and performing interpolation processing on the original three-dimensional image data along the axial direction through the interpolation enhancement network to obtain isotropic three-dimensional image data. Through noise reduction processing and interpolation processing, isotropic three-dimensional image data can be obtained, and a more accurate and stable image basis can be provided for subsequent tasks such as automatic analysis, neuron tracking and three-dimensional structure reconstruction.

The application provides a micro rotary equipment rotation speed and angle measurement method and system, equipment and a medium, the system comprises a position-fixed ultrasonic transducer, a rotatable rotating part and a signal processing module; the ultrasonic transducer is used for emitting ultrasonic to the measuring surface of the rotating part to obtain an echo signal; the signal processing module is used for calculating the ultrasonic distance by the time from emission to reception of the echo signal, obtaining the rotation speed information by the reciprocal number per second, decomposing the one-time reciprocal change into several segments to obtain the rotation angle information of the rotating part, and calculating the minimum rotation angle by the ultrasonic longitudinal resolution. Compared with the existing ultrasonic rotation speed measurement system which mainly depends on the transverse resolution, the application utilizes the longitudinal resolution to obtain higher precision angle and speed information; the application is not only suitable for shaft-driven rotary catheters, such as soft shaft driving, but also suitable for shaftless rotary catheters, such as water-driven turbines or magnetic-driven rotary catheters.

The application provides a super-structured optical fiber for generating a spindle beam and an optical acoustic endoscopy imaging system, the super-structured optical fiber comprising a fiber body and a super-structured optical structure arranged at an exit section of the fiber body, the super-structured optical structure comprising an optical expander and a super-structured structure array arranged at the end of the optical expander; the super-structured structure array is periodically arranged by super-structured units in a sub-wavelength scale, and the super-structured unit is in the form of a regular quadrangular prism; by clear phase modulation and parameter optimization, the super-structured optical structure is integrated at the end face of the fiber body, the emission light wave front is accurately regulated, a long focal depth spindle beam is obtained under the condition of a limited aperture and a compact structure, and the problem that the focal depth is limited in optical acoustic endoscopy imaging is effectively relieved; based on the combination of Bessel beams and the lateral spot size, the application maintains a high lateral resolution ability while extending the focal depth, avoids the defect that the resolution is significantly reduced in the traditional zooming scheme, and improves the imaging consistency and the signal-to-noise ratio.

The application discloses an up-conversion structured light illumination three-dimensional super-resolution imaging system and method, and belongs to the field of microscopic imaging. Light emitted by a laser light source is transmitted into a Fourier lens group to become diffraction light spots of various orders after phase control by a reflective spatial light modulator, and light of diffraction orders of +1 and +2 is filtered out by a light filtering pinhole. The light of diffraction orders of +1 and +2 is irradiated to a sample on an objective table by a microscope objective, and the sample generates a fluorescence band after being excited. The fluorescence is focused to the target surface of a first camera to form an image after being focused by a focusing assembly after passing through the microscope objective. A second super-lens modulator performs axial zoom layer scanning on the fluorescence, and a second camera performs focal plane imaging to lock the best focal plane to adjust the focal length of the first camera. The focal plane searching is more stable, and the introduced interference factors are less. Three-dimensional structured illumination light is formed by interference of the diffraction light of +1 and +2 orders, and three-dimensional super-resolution imaging with a lateral resolution of 100 nm and an axial resolution of 300 nm is realized.

The application provides a blood vessel intracavity ultrasound image generation method, device and electronic equipment, which is applied to a blood vessel intracavity ultrasound system, and comprises the following steps: acquiring n pieces of line image data when a transducer of the blood vessel intracavity ultrasound system rotates one circle; wherein n is an integer greater than 1; superimposing line image data acquired when the number of rotation circles of the transducer of the blood vessel intracavity ultrasound system is m to m+A-1 to obtain an mth frame of ultrasound image; wherein m is an integer greater than or equal to 1, and A is an integer greater than 1; and displaying the superimposed ultrasound image by the blood vessel intracavity ultrasound system. In this way, the transverse resolution of the ultrasound image can be improved, and the image quality of the ultrasound image can be enhanced by superimposing line image data acquired when the number of rotation circles of the transducer of the blood vessel intracavity ultrasound system is m to m+A-1 to obtain an mth frame of ultrasound image.

The invention belongs to the technical field of geophysical signal processing, and relates to a nuclear magnetic resonance adaptive transverse constraint inversion method for a complex geological environment. According to the method, an inversion objective function is constructed through a Tikhonov regularization algorithm, an LM iteration framework is deeply fused, and the numerical stability of an inversion process in an ill-conditioned matrix environment is ensured by utilizing the cooperative adjustment of a damping factor and a unit matrix. According to the method, the limitation that only the correlation coefficient of the simple adjacent measuring points is constructed in the prior art is abandoned, and the self-smoothing correlation coefficient is combined with the Pearson correlation coefficient. Linear correlation of measuring point data is accurately captured through a Pearson coefficient, and a self-smoothing mechanism based on weighted moving average is introduced, so that environmental noise interference is effectively reduced, and continuity of an inversion model in space is enhanced. According to the method, the constraint force can be adaptively adjusted according to the continuity of the underground geologic structure. The anti-noise capability is obviously improved, and the transverse resolution of the nuclear magnetic resonance signal is effectively improved.

The invention discloses a high-flux super-resolution volume imaging method for axial position information recovery, which comprises the following steps of: firstly, configuring a femtosecond excitation light source and a nanosecond loss light source, and then modulating phases of two light beams through a spatial light modulator to change the beat frequency coding axial position of excitation Bessel light drops; the loss light is endowed with first-order orbital angular momentum to realize depth-of-field hollow transmission; then the two light beams are subjected to spatial coincidence and time synchronization output, a resonance mirror and a current detection mirror are used for conducting two-dimensional rapid scanning on the combined light beam, focusing fluorescent molecules to induce the stimulated radiation loss effect and compressing the size of the fluorescent molecules so as to achieve volume super-resolution imaging in the focal depth range, finally, inverse Fourier transformation is conducted on an imaging picture stack to reconstruct the position, and axial information is extracted. According to the method, the influence of side lobes on the resolution and the signal-to-noise ratio can be reduced, high-contrast and rapid super-resolution volume imaging of organelles is achieved, and in the volume of 10 microns * 10 microns * 10 microns, the transverse resolution is superior to 100 nm, and the axial resolution reaches 1 micron.