23results about How to "Improve imaging effect" patented technology

This application relates to a marine vortex SAR imaging simulation method, comprising: acquiring marine environmental data of a target marine vortex region; generating a first geostrophic velocity field based on the sea surface dynamic height data, and generating a second geostrophic velocity field based on the three-dimensional temperature data and three-dimensional salinity data; performing a weighted summation of the first and second geostrophic velocity fields according to their respective weight values ​​to generate a composite geostrophic field corresponding to the target marine vortex region; and performing SAR simulation imaging on the target marine vortex region based on the composite geostrophic field to obtain a simulated SAR image of the target marine vortex region. Based on the above method, the problem of unclear details due to resolution limitations in sea surface dynamic height data can be improved; and the characteristics of vortices can be more fully represented, increasing the imaging effect of SAR in marine vortex imaging simulation applications.

This invention provides a cathode-unitized X-ray source, a static CT imaging system, and an image enhancement method, comprising: a vacuum tube; a cathode end for emitting electron beams, the cathode end including an exposure control module and multiple electron emission units arranged in a matrix on the same side of the exposure control module, all electron emission units being independent and electrically connected to the exposure control module; an anode target bombarded by the electron beam, the anode target including an anode body and a target surface formed on the anode body, the target surface being located on the emission path of the electron emission units; when the exposure control module receives an external control signal, it establishes a voltage line between the selected electron emission unit and the exposure control module, the electron emission units emitting electrons one by one or row by row toward the target surface, and the target surface reflecting X-rays to a window under the bombardment of electrons. This invention can increase the scanning range, improve the image quality of static CT, and extend the lifespan of the X-ray source.

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.

This invention discloses a dispersion compensation method and system for broadband imaging using a passive liquid crystal optical phased array. Dispersion parameters are obtained by calibrating the dispersion length and overall translation at different orders using a point source. The field of view is electrically deflected at different grating orders to acquire passive observation images. The dispersion process during diffraction is modeled, and an imaging matrix is ​​constructed based on a forward model. Compressed sensing reconstruction is solved using sparse priors as regularization terms to directly reconstruct a high-dimensional data cube of the entire field of view. After reconstruction, the entire field of view scene reconstruction result is directly projected downwards to obtain the reconstruction result of the scene during a scanning process. Field clipping is performed on the multi-order reconstruction results to obtain imaging results of different fields of view at different scanning angles. This invention significantly suppresses dispersion blurring along the deflection direction without changing the physical aperture and pixels of the passive liquid crystal optical phased array, improving the clarity and resolution of passive imaging. It is applicable to broadband passive scenes such as 380–760 nm visible / near-infrared.

This utility model relates to the field of lens technology and discloses a projection lens, including a lens body with a protective sleeve on the outside. A heating mechanism is provided on the lens body, comprising a drive motor, a rotating rod, a first gear, a large gear, a reciprocating lead screw, a second gear, a moving ring, and a heating ring. This utility model, through its heating and heat dissipation mechanisms, can effectively cope with different ambient temperatures and ensure image quality. In low-temperature environments, the drive motor and heating ring are activated to uniformly heat the lens body. This avoids changes in the relative positions and optical power between the lenses due to low-temperature contraction of the lens materials, preventing image blurring and ensuring that the projection lens can operate normally in cold environments, maintaining a stable imaging effect.

This utility model provides a wide-angle optical system and its application camera lens, mainly composed of 7 lenses. The first lens has a convex object plane and a concave image plane, with negative optical power. The second lens has concave object plane and image plane, with negative optical power. The third lens has convex object plane and image plane, with positive optical power. The fourth lens has convex object plane and image plane, with positive optical power. The fifth lens has convex object plane and image plane, with positive optical power. The sixth lens has concave object plane and image plane, with negative optical power. The seventh lens has a convex object plane and a concave image plane, with positive optical power. The high-pixel machine vision recognition optical system configured in this application has the advantages of high pixel count, strong resolution, and ultra-wide-angle design. It has a compact structure, is easy to process and install, and further improves the imaging effect of the equipment paired with the system.

The application relates to a speckle-eliminating laser projector, which comprises a plurality of laser light sources, a light mixing assembly, a speckle-eliminating sheet, a projection chip and a projection lens arranged along a light path in sequence, the laser light sources are used for emitting RGB light, the light mixing assembly is used for mixing the RGB light into white light, the speckle-eliminating sheet is used for eliminating the speckle of the white light, the speckle-eliminating sheet is formed by splicing a plurality of light adjusting units, and the speckle-eliminating sheet comprises an incident light surface, and the incident light surface is formed with array-arranged microlenses. The application helps to improve the imaging effect of the laser projector.

This application provides a 3D display system and device, relating to the field of display technology. An image source provides a light beam; a first quarter-wave plate controls the polarization direction; a 3D imaging grating assembly separates the parallax beam; a semi-transparent, semi-reflective assembly splits the beam through reflection and folds the optical path; and a second quarter-wave plate, in conjunction with a polarization reflection assembly, folds the beam back and calibrates the polarization direction. Finally, the beams corresponding to the left and right eyes are incident on the human eye, forming a 3D image. The optical components in each 3D display system are arranged along the output direction of the image source's optical axis, forming a flat, stacked optical structure. This facilitates multiple folds and propagations of the beam in the optical path before it reaches the human eye to complete the image, effectively improving the clarity, stability, and overall image quality. The first and second quarter-wave plates effectively isolate stray light directly emitted from the image source and invalid beams in the optical path that have not undergone polarization direction conversion, preventing stray light from interfering with the clarity of the image.

The application discloses an image transmission optical system for a fast ion loss probe, which comprises a special probe shaft, a periscope lens group, a fiber image transmission bundle, a relay lens and an image acquisition device, the periscope lens group is installed inside the special probe shaft of the fast ion loss probe, a fast ion loss probe probe head is bolted to the front end of the special probe shaft, the rear end of the special probe shaft is isolated from the external environment through a vacuum observation window, the vacuum observation window is externally connected with the fiber image transmission bundle, and the rear end of the fiber image transmission bundle is connected with the image acquisition device through the relay lens. The periscope lens group is combined with the fiber image transmission bundle, the periscope lens group is specially designed for the fast ion loss probe system, and the fluorescent pattern in the fast ion loss probe probe head can be completely imaged on the front end surface of the fiber image transmission bundle. The image on the rear end surface of the fiber image transmission bundle can be imaged on the photosensitive surface of the image acquisition device through the relay lens, so that the image data acquisition is completed.

The application relates to the technical field of remote sensing and radar imaging, and relates to a space target ISAR imaging and scaling integrated method based on a translation-rotation parameter joint estimation.The application is used to solve the problem that the existing space target ISAR imaging is affected by motion compensation, and the scattering points of a space target are prone to moving across distance units in a long-time accumulation.The application performs distance compression on echo obtained by a ground-based radar, performs generalized Radon Fourier transformation on a one-dimensional distance image sequence, and further estimates phase coefficients of the echo signal; the effective rotation angular velocity module value of a space uniform rotation target and a compensation signal are calculated by using the estimated value; the echo signal is subjected to translation compensation by using the compensation signal, the compensated echo signal is converted from a Cartesian coordinate system to a polar coordinate system by using the effective rotation angular velocity, and interpolation is performed; the imaging result is obtained by performing distance and azimuth compression on the interpolation result, scaling is completed according to the effective rotation angular velocity, and the space target ISAR imaging and scaling integration are realized.

This utility model relates to a low-reflection, high-transmittance color-enhancing lens and eyeglasses. The low-reflection, high-transmittance color-enhancing lens includes a substrate. At least one surface of the substrate is connected to an anti-reflective film layer. The anti-reflective film layer comprises nine layers, which are alternating layers of SiO2 and H4, stacked from the closest to the substrate outwards, with thicknesses of 1000-3000 Å, 50-300 Å, 100-500 Å, 100-500 Å, 100-500 Å, 100-3000 Å, and 500-1200 Å, respectively. Eyeglasses composed of low-reflection, high-transmittance color-enhancing lenses can not only adjust the transmittance of different wavelengths of visible light, but also reduce reflections within the lens, avoiding artifacts such as ghosting and halos, improving visual clarity, and enhancing the user experience for enthusiasts.

The present application relates to the field of radiopharmaceutical chemistry and clinical nuclear medicine technology, and particularly relates to a kind of compound targeted to FAP and its composition and application.The structure of the compound is as shown in the following formula (I).The compound can specifically respond to the enzyme highly expressed in tumor microenvironment, form active intermediate and covalently label adjacent protein, thereby prolonging the residence time of the compound of the present application at tumor target site, and improving imaging effect.After labeling with radionuclide, the obtained radioactive preparation has high uptake in tumor tissue, the tumor / non-target ratio is relatively optimal, and has good tumor uptake performance, and shows practical application prospect.(I).

This disclosure relates to the field of computer technology, and particularly to a gather repair method, apparatus, device, storage medium, and computer program. The gather repair method includes: acquiring seismic data, the seismic data including multiple seismic coordinate points, the seismic coordinate points being the coordinate points where earthquakes occur, and the seismic coordinate points being located in a Cartesian coordinate system; extracting curvelet coefficients corresponding to at least one spatial parameter of the seismic data based on a curvelet transform algorithm to obtain at least one curvelet coefficient; acquiring source-receiver offset vector surface element (OVT) gathers corresponding to the at least one curvelet coefficient, the OVT gathers being seismic data with the same spatial information; extracting anisotropy parameters of each curvelet coefficient, and using the anisotropy parameters of each curvelet coefficient to repair the corresponding OVT gathers, obtaining target OVT gathers corresponding to each OVT gather. The embodiments of this disclosure improve the accuracy of gather repair.

The application belongs to the technical field of computers, and particularly relates to a dirty area identification method and system of an image, a medium and an electronic device. The method comprises the following steps: acquiring multiple images, identifying dirty areas in the images; acquiring the similarity of any two dirty images; when the similarity of any two dirty images is greater than a preset value, discarding one of the any two dirty images; when a preset number of dirty images have position-similar dirty areas, determining that dirt is adhered to an endoscope; based on the application, the dirt adhered to the lens can be distinguished from the dirt in the environment where the lens is located, so that it is accurately determined that the dirty area shot by the lens is indeed adhered to the lens, the subsequent operator can conveniently perform accurate dirty cleaning treatment on the dirty area at the corresponding position of the endoscope, the imaging interference of the dirty area on the endoscope is avoided, and the imaging effect of the endoscope can be improved.

The utility model discloses a kind of cigarette packet detection systems based on C800 small box transparent paper packaging machine.The first camera, second camera, third camera and fourth camera of the system are electrically connected with image detection controller respectively;Image detection controller, encoder and camera light source stroboscopic brightening controller are electrically connected with PLC;First camera is used to photograph cigarette packet front surface, left side and rear surface;Second camera is used to photograph cigarette packet lower surface;Third camera is used to photograph cigarette packet right side;Fourth camera is used to photograph cigarette packet upper surface;The lens direction of first camera and the included angle of C800 small box transparent paper packaging machine front surface is 45 degrees, and the lens direction of third camera and the included angle of C800 small box transparent paper packaging machine front surface is 80 degrees.Through the technical scheme of the utility model, the imaging effect of each surface of C800 small box transparent paper packaging machine cigarette packet can be improved, and the accuracy of cigarette packet packaging quality inspection can be improved.

The utility model relates to a kind of gel imaging equipment, including machine body, light box and camera component, machine body is equipped with containing cavity;Light box includes box, light source and homogenizing plate, box is installed in containing cavity, and have the opening towards up, light source is located in box, homogenizing plate is installed in opening;Camera component is located in the upside of light box, camera component includes camera, refractive structure, optical filter and drive assembly, camera is located in machine body, refractive structure is located between light box and camera, for the light of light box is introduced into the lens of camera, optical filter is located in the side of lens, and have the first state of the lens is shielded, and the second state of the lens is exposed by being away from the lens, the drive assembly is used to drive the optical filter activity.The utility model aims at solving the problem of the imaging field of view of existing gel imaging system is limited and the imaging effect is not good.

The application discloses a beam-splitting phase-shifting optical path system, which comprises at least one waveguide structure; the waveguide structure comprises a coupling-in section, two coupling-out sections and at least one set of beam-splitting phase-shifting sections; the two coupling-out sections are arranged along a first direction, and the beam-splitting phase-shifting sections are located between the two coupling-out sections along the first direction. By adopting the technical scheme, the waveguide structure comprises the coupling-in section and the two coupling-out sections, and the two coupling-out sections are oppositely arranged on the two sides of the beam-splitting phase-shifting sections, so that the light beam expansion can be realized through the beam-splitting phase-shifting sections, and the double-side coupling-out can be realized at the same time. The double-side coupling-out scheme is simple. The light rays emitted by the two coupling-out sections are adapted to binoculars, the binoculars can obtain the light rays, and the binoculars do not need to be combined, so that the imaging effect is improved, the difficulty of assembling and adjusting the optical path system is reduced, the structure of the optical path system is simplified, the optical path system with a small size can be realized, and the cost of the optical path system is reduced.

This application relates to the field of infrared optical lens technology and discloses a method for optimizing the optical performance of a cooled mid-wave infrared zoom lens, comprising the following steps: obtaining the basic optical parameters of the cooled mid-wave infrared zoom lens to be optimized within the full focal length range, and constructing a multi-focal-length optical performance benchmark library; based on the multi-focal-length optical performance benchmark library, performing a pre-evaluation of the cold reflection effect of the lens, identifying optical surfaces with a risk of cold reflection and performing pre-optimization; by constructing a multi-focal-length optical performance benchmark library and conducting a pre-evaluation of the cold reflection effect, the high-risk optical surfaces of the cooled lens that are prone to cold reflection are identified in advance, and pre-optimization is performed by combining coating adjustment and angle fine-tuning, which solves the problem that existing methods do not specifically address the unique defects of cooled lenses and are prone to cold spot ghosting, thereby improving the basic imaging clarity and contrast of the lens from the source.

The application discloses a variable mode decomposition method for step frequency continuous wave signal noise reduction, and belongs to the field of signal modulation. The method solves the problem that the intensity of noise components in the existing spectrum synthesis is much higher than that of effective signals, and the effective suppression cannot be obtained. The method comprises the following steps: collecting a step frequency continuous wave echo signal, and decomposing the step frequency continuous wave echo signal into a plurality of independent single frequency signals; performing variable mode decomposition on each single frequency signal to obtain a plurality of intrinsic mode functions; screening modes with the same center frequency as the frequency of the effective signal as effective signal modes, and screening the remaining modes as noise modes; calculating the maximum information coefficient MIC between the effective signal modes and the noise modes; iteratively optimizing the parameters of the variable mode decomposition based on a Bayesian optimization method until the MIC value of the effective signal modes and the noise modes is lower than a set threshold; retaining the effective signal modes, and reconstructing a step frequency continuous wave signal after noise reduction. The application is applied to the fields of high-resolution target imaging and ranging.

This invention discloses an underwater white low-light detection lens, a mechanical packaging structure, and an underwater imaging instrument. The lens comprises, from the object space to the image plane, a first lens to a twelfth lens. The lens employs a zoom structure, enabling switching between wide-range detection and precise small-range identification imaging functions. Utilizing an all-glass lens structure, it features a large aperture and ultra-wide-angle lens, achieving clear imaging over a wide area with high brightness in low-light underwater environments. Through precise design and arrangement of the curvature radius, thickness, and materials of each lens, various aberrations, particularly distortion and chromatic aberration, are effectively corrected. The lens has a compact overall structure, with each lens securely integrated with the lens barrel and spacers, exhibiting high environmental adaptability and suitability for underwater detection, underwater photography, and other fields.

This invention relates to a low-carbon mining technology, specifically a low-carbon downhole borehole visual detection device and its detection method. The device includes a frame structure, a cable roller rotatably mounted on the frame structure, a cable wound around the cable roller, and a detection assembly connected to the free end of the cable. The detection assembly includes a rear cover and a front cover connected by threads. A sleeve is formed at the end of the rear cover away from the front cover, and the top of the sleeve is fixed to the cable's degree of freedom. A counterweight is detachably mounted on the sleeve. Multiple rubber wheels for elastically fitting against the borehole wall are distributed at equal angles along the circumference of the rear cover. The rubber wheels are connected to the visual probe through a vibration structure. When the cable roller rotates to release the cable, allowing the detection assembly to descend along the borehole under the action of the counterweight, the rubber wheels roll along the borehole wall, causing the visual probe to vibrate through the vibration structure.

The application discloses a diffractive optical waveguide, which comprises a waveguide substrate, the waveguide substrate is provided with at least a coupling-in grating and a coupling-out grating, and light is totally reflected and transmitted towards the coupling-out grating after being coupled into the waveguide substrate from the coupling-in grating; a first auxiliary structure is arranged on the local edge of the coupling-in grating close to the coupling-out grating, the first auxiliary structure has a gradually decreasing height away from the edge of the coupling-in grating; and a second auxiliary structure is arranged on the local edge of the coupling-out grating close to the coupling-in grating, the second auxiliary structure has a gradually decreasing height away from the edge of the coupling-out grating. The diffractive optical waveguide has a better imaging effect.

The application provides a near-infrared fluorescent viscosity probe, a preparation method and application thereof, and belongs to the technical field of biological medicines.The near-infrared fluorescent viscosity probe has a structure as shown in formula I; the application further provides a preparation method and application of the near-infrared fluorescent viscosity probe.The near-infrared fluorescent viscosity probe has the characteristics of aggregation-induced emission, high viscosity sensitivity, pH stability and good biocompatibility, can realize rapid and accurate imaging of rheumatoid arthritis and osteoarthritis, and provides a new tool for arthritis diagnosis and pathological research.