40 results about "Correlative imaging" patented technology

A super-resolution single-objective light-sheet optical microscopy system and method, and a related imaging system, are configured to generate two light sheets that are guided to a single objective. The single objective is configured to allow the two light sheets to transmit through same and interfere with each other to generate structured light fringe regions. The single objective is further configured to receive a fluorescence signal that is recorded by a fluorescence detection module.

A medical imaging system (1) includes an electronic controller (10) including a display (24), the electronic controller configured to implement an imaging workflow graphical user interface (GUI) (26) enabling an associated user to set up an imaging workflow, execute the imaging workflow to acquire imaging data of the associated imaging subject using a medical imaging device (2), and display at least one medical image of the associated imaging subject generated by processing of the imaging data acquired by the execution of the imaging workflow; a problem reporting GUI dialog (28) hosted on the electronic controller and integrated with the workflow UI, wherein the problem reporting GUI is configured to receive a problem report indicating a problem with the medical imaging device; and a problem remediation tool (30) configured to perform at least one remedial action in response to receiving the problem report via the problem reporting GUI dialog.

Methods for compensating measurements of devices under test (DUTs) captured through prescription lenses (and associated imaging systems, devices, and methods) are described herein. In one embodiment, a method for characterizing focus quality of a DUT through a prescription lens includes adjusting an optical power of a measurement device to compensate for optical power provided by the prescription lens. The method further comprises imaging, using the measurement device, a test pattern through the prescription lens, wherein the test pattern is displayed by the DUT; measuring contrast of an edge in the test pattern at a point of interest within the imaging of the test pattern; and determining focus quality of the DUT based at least in part on the contrast measurement.

The invention discloses a VTI medium two-way wave migration imaging method based on De Wolf approximation, and the method comprises the steps: dividing a model into a plurality of thin plates, and sequentially carrying out the calculation of the thin plates from the minimum depth to the deepest depth based on a seismic source, and obtaining a forward transmission downlink migration wave field and a forward transmission primary uplink migration wave field of each thin plate; calculating forward-transmission uplink offset wave fields of the thin plates at different positions from the deepest position to the minimum depth position of the model, and adding the reserved forward-transmission primary uplink offset wave field to finally obtain forward-transmission uplink offset wave fields of all the thin plates; acquiring back propagation downlink and uplink offset wave fields according to the calculation process based on seismic records; and finally, obtaining all imaging results by using cross-correlation imaging conditions. Not only can downlink offset wave field information be utilized, but also uplink offset wave field information can be utilized; a two-way wave migration operator is formed by two one-way migration operators, the influence of anisotropic parameters on the migration imaging result can be corrected, and finally the migration imaging precision of the steep dip angle structure is effectively improved.

This disclosure pertains to the field of exploration geophysics and presents a method and system for combined active and passive source reverse time migration imaging of metallic minerals. The method includes: performing time difference correction on active and passive source seismic data from the same subsurface structure; performing wavefield separation on the time-aligned active and passive source seismic data to reconstruct the P-wave and S-wave fields of the active source and the passive source; performing active and passive source wavefield extrapolation based on the two-way wave equation; obtaining active and passive source PS-converted wave imaging results using cross-correlation imaging conditions; and performing weighted superposition and fusion to obtain the combined active and passive source imaging results. This disclosure leverages the high resolution advantage of active sources combined with the deep detection capability of passive sources, replacing the limitations of single-source detection and achieving high-precision deep reverse time migration imaging.

The invention provides a sub-meter buried unexploded ordnance detection and identification method based on correlation three-dimensional magnetic imaging, and the method comprises the steps: obtaining ground surface magnetic anomaly measured data and corresponding trajectory data of a detection region, and dividing a local anomaly region according to a magnetic anomaly change rate; dividing the underground space corresponding to the local abnormal region into three-dimensional grids based on the local abnormal region, calculating the theoretical magnetic anomaly of each grid node based on a magnetic dipole model, obtaining a normalized local correlation coefficient point by point with the measured data of the magnetic anomaly, and reserving nodes higher than a preset threshold as candidate nodes; taking error minimization between theoretical magnetic anomaly of the candidate node and magnetic anomaly measured data as a fitness function, and obtaining an optimal magnetization parameter and an optimal local correlation imaging coefficient based on particle swarm optimization iterative optimization; and based on the optimal local correlation imaging coefficient, carrying out integration according to a spatial position, generating a three-dimensional magnetic imaging result of the detection area, and obtaining a contour parameter and a spatial position of the sub-meter buried unexploded ordnance.

The invention relates to a method (30) for characterising a camera module (4) comprising a lens (6) and a sensor (8), the lens (6) belonging to a predetermined family of lenses associated with a particular target geometry, the characterisation method (30) including the steps of: - obtaining (32) configuration data which are indicative of a current configuration of the camera module and comprise: • at least one production parameter which is representative of an actual geometry of the lens (6); and / or • at least one use parameter which is representative of current image-acquisition conditions of the camera module (4); and - calculating (34) a current optical transfer function, which is associated with the current configuration of the camera module (4), from: • obtained configuration data; and • a predetermined estimation function (16) which is associated with the family of lenses and takes, as input, configuration data, and provides, as a result, a corresponding estimated optical transfer function.

The application discloses a two-way wave migration imaging method based on a Muller model and a VTI medium, adopts a thin plate division idea to divide a model into thin plates, obtains a positive transmission down-going migration wave field and a positive transmission up-going migration wave field of each thin plate based on a seismic source calculation, then obtains a reverse transmission down-going migration wave field and a reverse transmission up-going migration wave field based on a seismic record, finally obtains all imaging results by using a cross-correlation imaging condition, and in addition, the Muller model is used as an absorption attenuation model, which is different from the existing Kolsky-Futterman model, can further avoid the problem that the existing model cannot accurately satisfy the minimum time delay criterion, can utilize down-going migration wave field information and up-going migration wave field information through the above process, and can correct the influence of anisotropic parameters on migration imaging results and compensate the amplitude attenuation problem of seismic waves through two one-way migration operators, so that the migration imaging precision of steep dip structures is effectively improved.

A working-range-extending phase plate includes a central region, an inner annular region surrounding the central region, and an outer annular region surrounding the central region and the inner annular region. The central region has a central phase-transmission function. The inner annular region has an inner phase-transmission function. The outer annular region has an outer phase-transmission function. Respective magnitudes of the central, the inner, and the outer phase-transmission functions are, as a function of radial distance from an optical axis of the phase plate, one of: (i) constant, increasing, and increasing, (ii) decreasing, constant, and increasing, or (iii) decreasing, decreasing, and constant.

A hybrid NIRF / IVUS imaging probe containing i) a spatially-truncated optical lens a substantially-planar surface of which is inclined with respect to an axis to reflect light, transmitted between proximal and distal ends of the probe, internally into a body of the lens, and ii) an acoustic transducer disposed sequentially with the optical lens on the axis of the probe while, at the same time, the optical and electrical members of the probe transmitting the radiative and mechanical energies (which the probe exchanges with a target bodily vessel) are parallel to one another within the housing of the probe. A method for operating the probe resulting in formation of spatially co-registered optical and acoustic images of the target. Related imaging system and computer-program product.

A working-range-extending phase plate includes a central region, an inner annular region surrounding the central region, and an outer annular region surrounding the central region and the inner annular region. The central region has a central phase-transmission function. The inner annular region has an inner phase-transmission function. The outer annular region has an outer phase-transmission function. Respective magnitudes of the central, the inner, and the outer phase-transmission functions are, as a function of radial distance from an optical axis of the phase plate, one of: (i) constant, increasing, and increasing, (ii) decreasing, constant, and increasing, or (iii) decreasing, decreasing, and constant.

The invention discloses a viscous sound medium preprocessing iteration method one-way wave migration method based on thin plate approximation. The method comprises the following steps: firstly, obtaining an actual seismic record; calculating a forward scattering migration wave field by using a viscous-acoustic medium preprocessing iteration method based on thin plate approximation, and calculating a back scattering migration wave field of the seismic record by taking observation data as a boundary value condition; and finally, scattering wave imaging is carried out by using a cross-correlation imaging condition, and a final migration imaging field is obtained. In the whole process, in order to avoid the influence of the instability of a strong disturbance medium background Green function on an imaging result, a small imaginary part attenuation component is introduced to improve the divergence problem of the Born series in a strong disturbance medium, and the calculation efficiency is further accelerated by utilizing a pre-solution factor. In order to avoid the problem of solving a large iterative matrix, a speed model is divided into thin plates by utilizing the thought of thin plate division, so that global calculation is converted into local calculation, and migration imaging with relatively high efficiency and relatively high precision is finally realized through the process.

A reverse time migration imaging method for cased-hole based on ultrasonic pitch-catch measurement, including: calculating a theoretical dispersion curve; expanding original Lamb data of two receivers into array waveform data based on phase-shift interpolation; establishing a two-dimensional migration velocity model including density, P-wave velocity and S-wave velocity of a target area; generating and storing a forward propagating ultrasonic wavefield for each time step; reversing a time axis; generating and storing a reversely propagating ultrasonic Lamb wavefield for the two receivers after phase-shift interpolation; calculating envelopes of the forward propagating ultrasonic Lamb wavefield and the reversely propagating ultrasonic Lamb wavefield; applying a zero-lag cross-correlation imaging condition to obtain reverse time migration imaging results; and applying Laplace filtering to suppress low-frequency imaging noises in the imaging results.

The invention discloses a time migration method for a three-dimensional pre-stack wave equation in an imaging ray domain, which relates to the technical field of exploration geophysics and comprises the following steps of: deducing a bidirectional acoustic wave equation in an imaging ray coordinate system based on a Riemann wave field extrapolation theory in a three-dimensional semi-orthogonal coordinate system; an equation is directly solved by adopting a finite difference method, extrapolation of a seismic source and a receiving end wave field is achieved, and errors caused by Green function approximation in a traditional migration method are avoided; and generating a pre-stack time migration result by applying a zero-lag cross-correlation imaging condition. Through first-order linear disturbance approximation, an accurate three-dimensional time-depth conversion partial differential equation set is simplified into an optimized layer stripping algorithm, and a corresponding equation suitable for a weak transverse velocity change medium is deduced. According to the invention, the working process of three-dimensional wave equation time migration is realized in an imaging ray coordinate system, and an accurate seismic imaging result is generated; two-dimensional plane hypothesis limitation is avoided, and high-precision imaging technical guarantee is provided for seismic data processing of a complex structure area.

The invention provides a method and a device for correlated imaging of a biological sample, and the method comprises the following steps: freezing and fixing the biological sample, and directly converting water in cells or tissues of the biological sample into a glassy state to obtain a frozen biological sample; performing electron microscope imaging on the frozen biological sample, and determining a to-be-cut position of the frozen biological sample; the optical signal intensity corresponding to the to-be-cut position meets a preset condition; optical imaging is conducted on the to-be-cut position, three-dimensional optical image data are obtained, and the three-dimensional optical image data comprise specific optical information of the to-be-cut position; performing continuous cutting on the to-be-cut position, and performing two-dimensional electron microscope imaging on a cut exposed surface to obtain a plurality of electron microscope images; and reconstructing the plurality of electron microscope images into a three-dimensional electron microscope image, and carrying out correlated imaging on the three-dimensional optical image data and the three-dimensional electron microscope image to obtain the three-dimensional ultrastructure of the biological sample.

The invention discloses a two-way wave migration imaging method based on a Muller model and a VTI medium, and the method comprises the steps: dividing a model into a plurality of thin plates through employing the thought of thin plate division, and obtaining a forward transmission downlink migration wave field and a forward transmission uplink migration wave field of each thin plate through calculation based on a seismic source; a back propagation downlink offset wave field and a back propagation uplink offset wave field are obtained based on seismic records; and finally, obtaining all imaging results by using a cross-correlation imaging condition. In addition, a Muller model is adopted as an absorption attenuation model which is different from an existing Kolsky-Futterman model, so that the problem that the existing model cannot accurately meet the minimum time delay criterion can be further avoided; through the process, not only can downlink offset wave field information be utilized, but also uplink offset wave field information can be utilized; a two-way wave migration operator is formed through two one-way migration operators, the influence of anisotropic parameters on the migration imaging result can be corrected, meanwhile, the amplitude attenuation problem of seismic waves can be compensated, and finally the migration imaging precision of the steep dip angle structure is effectively improved.

A system and method for generating geometric dimensions of a syringe or plunger stopper are provided. The geometric dimensions may be based on at least one image of at least a part of the syringe or plunger stopper. A fixture for positioning the syringe or plunger stopper in close proximity to an associated imaging device is also provided.

A hyperspectral imaging device and method disclosed herein overcomes technical problems associated with the prior art by replacing the intensity measurement performed by the single high-resolution 2D sensor of state-of-the-art methodologies, with the measurement of intensity (fluctuation) correlations retrieved by two high-resolution 2D sensors: one—the imaging / spatial sensor dedicated to polychromatic image acquisition, the other—the spectral sensor dedicated to pure spectral measurement. In the hyperspectral correlation imaging disclosed herein, the spectral information is encoded into the intensity correlation without requiring any spectral scanning. Even though multiple exposures (frames) are generally required to reconstruct light statistics and perform correlation measurements, the exposure times are several orders of magnitude shorter than those required in the scanning approach. In addition, no changes of the device are required during such multiple exposures, which simplifies the optics / optomechanics of the device and avoids further time consumption.

The disclosed embodiments include systems and methods for producing hyperpolarized molecules of interest (such as hyperpolarized biorelevant imaging agents), in clinically relevant polarizations, concentrations, volumes, and purity. Disclosed embodiments provide technical improvements in polarizing molecules of interest in solution. These technical improvements support increases in molecule of interest concentration and the degree of polarization.

The invention discloses a wood foreign matter space positioning system based on X-ray detection, which relates to the technical field of wood detection and comprises a first X-ray light source, a second X-ray light source, a first detector, a second detector and a data acquisition board electrically connected with the first detector and the second detector. According to the method, the related imaging principle of X-rays is applied, a linear array scanning imaging system is adopted to carry out online detection on the wood plate blank passing through a channel, foreign matters in the wood plate blank can be rapidly detected through an AI algorithm, automatic analysis and calculation are carried out through respective imaging results of two angles, and the spatial position of the foreign matters on the wood plate blank is determined; the system adopts two X-ray emitters and two high-efficiency detectors, the accuracy is improved through cross validation and distortion correction of the double detectors, equipment can be guided to avoid foreign matters, safety is guaranteed, processing waste products can be reduced, and labor and equipment maintenance cost is reduced.

An imaging method and an associated imaging system (100, 200) are disclosed herein. The imaging method comprises:-providing an array of light sources, each source being configured for the output of a light emission,-providing an imaging unit (2) comprising a focusing element (L0) and a detector (DT), the detector being configured to detect the light emission 10 from the sources of the array by means of the focusing element (L0),-providing an object (OBJ) between the detector (DT) and the array of light sources, providing an imaging device (IL, FFL) 15 between the array of light sources and the object (OBJ), -operating the array of light sources (SRC ') by activating the light sources according to a sequence pattern, whereby, according to said sequence pattern, the position of the activated light sources in the array relative to the 20 object (OBJ) varies with the activation of the light sources,-imaging the array of light sources by said imaging device (IL, FFL) while operating the array of light sources 25, detecting, by 30 imaging devices (IL, FFL) and by focusing elements (L0), on said detector (DT), the spatial positions of images (I1-In) of points of said object (OBJ) formed at different positions of the activated light sources in the array, and the offset (O1-On) 27, 27, 27 ') of each detected spatial position with respect to a reference spatial position (x); -reconstructing an image of the object (OBJ) by aligning images of points of said object (OBJ) formed at different positions of the activated light sources in the array by deviating from each detected spatial position from a reference spatial position (x).

The application discloses a VTI medium double-way wave migration imaging method based on De Wolf approximation, and comprises the following steps: firstly, dividing a model into multiple thin plates; then, based on a seismic source, sequentially calculating and obtaining a positive transmission down-going migration wave field and a positive transmission first up-going migration wave field of each thin plate from a minimum depth to a maximum depth; then, calculating a positive transmission up-going migration wave field of each thin plate at different positions from the maximum depth to the minimum depth and adding the reserved positive transmission first up-going migration wave field, so as to finally obtain the positive transmission up-going migration wave field of all the thin plates; then, based on seismic records, obtaining reverse transmission down-going and up-going migration wave fields according to the above calculation process; finally, obtaining all imaging results by using a cross-correlation imaging condition. Not only the down-going migration wave field information can be used, but also the up-going migration wave field information can be used; a double-way wave migration operator is formed by two one-way migration operators, the influence of anisotropic parameters on migration imaging results can be corrected, and finally the migration imaging precision of steeply dipping structures is effectively improved.

The invention is suitable for the technical field of computer vision, and provides a time self-correlation imaging method and system based on an adaptive orientation space window. The speckle contrast imaging and self-correlation imaging method comprises the following steps: acquiring continuous multi-frame speckle images; the method comprises the following steps: presetting a basic space window by taking a target pixel as a center, and giving a plurality of orientations; selecting a certain frame of speckle image, respectively extracting speckle light intensity sequences of corresponding orientations in the basic space window, and calculating the spatial domain variance of the light intensity sequence of each orientation; selecting the orientation with the maximum light intensity variance, and determining the orientation as an effective calculation window of the target pixel; and performing time autocorrelation function calculation based on the effective calculation window so as to solve a blood flow velocity parameter of the target pixel. According to the method, the noise of the blood flow area can be reduced, and the real-time monitoring requirement is met while the high spatial resolution is guaranteed.

Systems and methods for applying a tracking filter, such as an adaptive correlation filter (ACF), to imaging data acquired during a radiation therapy procedure and guiding delivery of radiation using filtered images are disclosed herein. The filtered image may provide information about the real-time location of the target anchor, and the radiotherapy system may then calculate a radiation fluence using the target anchor location information. The methods described herein may be used with image-guided radiation therapy, such as IMRT / SBRT / SRS, and bio-guided radiation therapy (BgRT) of one type that converts biologically related imaging data acquired on the day of the therapy into radiation fluence for delivery.

The invention belongs to the field of exploration geophysics, and relates to an active and passive source combined reverse time migration metal mine converted wave imaging method and system, and the method comprises the steps: carrying out the time difference correction of active source seismic data and passive source seismic data of a same underground structure; respectively carrying out wave field separation on the active source seismic data and the passive source seismic data after time alignment, and reconstructing a P-wave field and an S-wave field of the active source and a P-wave field and an S-wave field of the passive source; performing active source wave field extrapolation and passive source wave field extrapolation based on a two-way wave equation; obtaining an active source PS converted wave imaging result and a passive source PS converted wave imaging result by using a cross-correlation imaging condition; carrying out weighted superposition fusion to obtain an active and passive source combined imaging result; according to the invention, the high resolution advantage of an active source and the deep detection capability of a passive source are combined, the limitation of single-source detection is replaced, and high-precision deep reverse time migration imaging is realized.

A broadband super-Rayleigh speckle correlated imaging spectral camera based on dispersion compensation is provided. The imaging scheme comprises, but is not limited to, a pre-compensation scheme, a post-compensation scheme, or a pre-post joint compensation scheme. The device comprises components such as a pre-imaging module, a light filter, a phase modulation module, a relay imaging module, an area array detector, and a computer. According to the present invention, the super-Rayleigh speckle modulation in a broadband is realized by matchining the dispersion characteristic of the pre-imaging module or the relay imaging module with the phase modulation module, which is applied to the correlated imaging spectral camera, so that the imaging quality of the correlated imaging spectral camera at a low signal-to-noise ratio is improved.

Disclosed herein are histone deacetylase imaging agents for positron emission tomography and related imaging methods using the histone deacetylase imaging agents. The histone deacetylase imaging agents may be a compound of formula (I):wherein R1 is a moiety including a positron emitter; R2 represents hydrogen, or substituted or unsubstituted alkyl, or substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl; and n is an integer selected from 0 or 1. In one version of the compound of formula (I), R1 is a moiety including an adamantyl group.

A method for imaging a mask layer includes reading imaging data for a sequence of at least (C1+C2) pixels, at a first moment, using a group of C1 first imaging beams for imaging substantially simultaneously a first group of C1 pixels of said sequence in accordance with the imaging data, at a second moment, using a group of C2 second imaging beams for imaging substantially simultaneously a second group of C2 pixels of said sequence in accordance with the imaging data, repeating the reading of imaging data, the using of a group of C1 first imaging beams for imaging at a first moment, and the using of a group of C2 second imaging beams for imaging at a second moment for a next sequence of at least (C1+C2) pixels.