50 results about "Multi focus" patented technology

The invention discloses an image edge feature enhancement correction fusion method based on a guide filter, and aims to solve the problems that detail features of a low-illumination visible light image and an infrared image are not obvious, focusing edge information is not clear, and registration of a multi-focus image is wrong. The invention provides an edge feature enhancement correction fusion method based on a guide filter. In the illumination enhancement stage, a visible light image is divided into a base layer and a detail layer through a guide filter, and the image contrast and detail information are enhanced. For an infrared image, an infrared background is reconstructed by using a quadtree decomposition and Bezier interpolation method, unclear focusing edge feature information is extracted, and the visibility of image details is enhanced. And finally, reconstructing the two processed images by using a multi-scale weighted gradient method, and performing fusion by calculating large-scale and small-scale weight scales.

The invention discloses a multi-focus time sequence embryo image double-constraint processing method and system, and the method comprises the steps: S410, collecting a multi-focus image sequence through a time-delay imaging technology, and enabling each collection moment to comprise n images of different focus planes; step S420, the RMT16 backbone network respectively processes the n images of different focus planes to obtain n corresponding feature maps, and each feature map represents a prediction result of a corresponding focus plane image; s430, inputting a group of feature maps into a multi-focus consistency head, and comparing the multi-focus consistency head with a real result to obtain consistency loss; inputting the other group of feature maps into a multi-focus contrast head, and comparing internal information of the generated feature maps corresponding to the n plane images with different focuses to obtain contrast loss; and S440, performing weighted summation on the obtained consistency loss and comparison loss to obtain total loss, and updating model parameters according to the total loss.

The invention provides a multi-focus excitation confocal fluorescence microscopic imaging flow cytometry screening method. The method is characterized in that a laser beam generates three laser beams through a spatial light modulator, and the three laser beams are coherently superposed in a focal plane of a microscope objective to generate a two-dimensional optical lattice light field. And after the other laser beam is shaped by the cylindrical lens, linear laser optical tweezers are realized through the microscope objective, cells to be detected in an imaging detection area of the micro-flow chip are captured, and accurate active optical control on the rotation angle of the cells to be detected is realized. In a cell rotation process, a two-dimensional optical lattice light field rapidly scans in a focal plane at different angles, and a fluorophore in the cell is excited to generate a fluorescence signal. The confocal pinhole array installed at the position conjugate with the focal plane eliminates background fluorescence, a high-spatial-resolution fluorescence image of a three-dimensional structure in the cell is obtained, and cell screening is achieved. The method provided by the invention has the characteristics of high detection rate, high accuracy and the like, and has wide application prospects in the research fields of biology, medicine and life science.

The invention relates to the technical field of medical image processing, in particular to an intestinal polyp segmentation method and system based on a spiral scanning state space model, and the method comprises the following steps: S1, obtaining and preprocessing an image; s2, performing multi-scale context feature coding; s3, self-adaptive frequency domain feature enhancement is carried out; s4, performing decoding and segmentation prediction; and S5, carrying out threshold processing to generate a binary segmentation mask image. According to the method, the boundary integrity of an irregular target is kept through a dynamic multi-focus spiral scanning strategy, and the adaptive frequency domain filtering module is introduced to enhance the discriminability of key features, so that the segmentation precision and robustness in complex medical image tasks such as intestinal polyp and the like are comprehensively improved.

The invention provides a multi-focus point ring light spot generation system and a laser welding method, and belongs to the technical field of laser machining. The system comprises an annular light source, a first collimating lens, an annular light beam generation module and a first reflecting mirror which are sequentially arranged at intervals along a first linear direction, and a point light source, a second collimating lens, a first focusing mirror, a multi-curvature hollow reflecting mirror and a second focusing mirror which are sequentially arranged at intervals along a second linear direction, the center of the multi-curvature hollow reflecting mirror and the center of the second focusing mirror are provided with through holes for light beams emitted by the point light source to penetrate through, and the mirror surface curvature of the multi-curvature hollow reflecting mirror is adjustable. The technical problems of high processing cost and poor deep welding stability caused by structural limitation of a point ring laser in the prior art can be solved.

The invention provides a high-precision infrared fault detection method, which comprises the steps of setting a plurality of focus positions under each response rate, and collecting data of a preset frame number in a focusing process of each focus position; the data comprises temperature data and image data; processing the acquired image data by using a multi-frame super-resolution reconstruction network, a multi-focus fusion network and a multi-response-rate fusion network to obtain a reconstructed infrared image; and fault detection is realized through a fault diagnosis network by using the reconstructed infrared image and historical temperature data. According to the invention, through multi-frame, multi-focus and multi-response-rate image fusion, high-resolution and high-dynamic-range clear imaging and accurate temperature measurement are realized; by using historical temperature data and a reconstructed infrared image, spatial features and time sequence features are aligned and fused, and intelligent thermal fault diagnosis of industrial equipment is realized.

The application discloses a kind of optical lens centering positioning device and method based on multi-focus ring zone lens, the device is by autocollimator, multi-focus ring zone lens, precision five-dimensional adjusting frame, lens group to be measured, mirror seat, leveling centering device, air bearing, displacement sensor, marble frame, image display system, centering positioning measurement analysis system composition, mirror seat is installed on the centering leveling device of air bearing, and through displacement sensor to the center axis of mirror seat and the center axis of air bearing coincide, the spherical center of lens upper surface is located in the focal point of multi-focus ring zone lens, without adjusting the position of multi-focus ring zone lens, the high-precision lens can be quickly centered, and the assembling and adjusting time of lens is greatly reduced;The edge spread function of cross differentiation silk is analyzed by image processing and display system, so as to calculate the axial assembly error of lens, the application solves the problems of low optical lens centering positioning precision and low assembly efficiency.

Embodiments of a dermatological cosmetic treatment and imaging system and method can include use of transducer to simultaneously or substantially simultaneously produce multiple cosmetic treatment zones in tissue. The system can include a hand wand, a removable transducer module, a control module, and / or graphical user interface. In some embodiments, the cosmetic treatment system may be used in cosmetic procedures, including brow lifts, fat reduction, sweat reduction, and treatment of the décolletage. Skin tightening, lifting and amelioration of wrinkles and stretch marks are provided.

The invention relates to the technical field of optical microscopy, in particular to a device for realizing high-flux fluorescence detection based on galvanometer scanning, and the device comprises an illumination module which is used for generating a multi-focus plane illumination light beam; the multi-focus plane illumination light beam can enter a first surface of the galvanometer through the dichroscope, and the galvanometer can reflect the multi-focus plane illumination light beam to the objective lens module, so that the multi-focus plane illumination light beam is focused on a sample through the objective lens module to form multi-point illumination; emitted light emitted by a sample through excitation is collected by the objective lens module, then enters a first surface of the galvanometer and is reflected to the dichroscope, the dichroscope can reflect the emitted light to the detection module, signal light enters a second surface of the galvanometer and then can be reflected to the image acquisition module, and the image acquisition module is used for acquiring and imaging the signal light. The method has the effect of solving the technical problems that the existing fluorescence detection speed and resolution are difficult to consider and the resolution improvement of a high-throughput scheme is limited.

The invention relates to the technical field of X-ray imaging, and discloses a tomography device and method based on a multi-focus X-ray source, and the device comprises a control system which is used for controlling the multi-focus X-ray source to carry out the longitudinal scanning of a detected object; n ray tubes which are transversely distributed are arranged on the multi-focus X-ray source, each ray tube internally comprises an independent cathode and an independent anode, and the cathode and the anode are used for triggering and generating multi-view X-rays; the detector is used for receiving the X-rays penetrating through the detected object and converting the X-rays into multi-view projection data; and the image processing system is connected with the detector and is used for processing the multi-view projection data based on a tomography reconstruction algorithm to obtain tomography data of the detected object and a three-dimensional reconstruction model. The multi-focus ray source and the detector which are horizontally and transversely arranged synchronously move for scanning, multi-view-angle and high-efficiency whole-body tomography data acquisition is achieved, and the requirement for rapid, accurate and whole-body tomography imaging is met in combination with a tomography reconstruction algorithm.

A multi-focal ophthalmic lens using suppressed diffraction orders. A multi-focal ophthalmic lens includes an ophthalmic lens and a diffractive element. The ophthalmic lens has a base curvature corresponding to a base power. The diffractive element produces constructive interference in at least four consecutive diffraction orders corresponding to a range of vision between near vision and distance vision. The constructive interference produces a near focus point, a distance focus point, and an intermediate focus point between the near focus point and the distance focus point corresponding to the base power of the ophthalmic lens. The diffraction efficiency of at least one of the diffraction orders is suppressed to less than 10%.

An information handling system camera that includes a rapid focus capability for near and far objects by selectively inserting and removing a refractive material between the camera lens and image sensor to effectively adjust the camera focusing distance. When far object focus is desired, a refractive material of predefined properties is inserted to enable an instant focus of the far object to the image sensor. When a near object focus is desired, the refractive material is removed (or replaced with a thinner material) to rapidly achieve focus. In addition, a voice coil motor or other actuator fine tunes the focus when desired. In one alternative embodiment, focus is performed only with the insertion and retraction of the refractive material so that no lens actuator is included in the camera. The refractive material extends the back focal distance between the lens and image sensor relative to the back focal distance without the refractive material. Rapid insertion of refractive material shortens the time to adjust focus relative to focus time associated with actuator-based lens movement focus.

The invention discloses a multi-focus confocal Raman spectrum imager based on field-of-view modulation. An incident laser beam is modulated and split into a plurality of sub laser beams with specific field-of-view angles through a laser light path module; the sub-laser beams are focused by an objective lens to form a multi-focus laser array on the surface of a sample; a sub Raman spectrum excited by each laser focus returns along an original light path, passes through the coupling beam splitter and then is guided to the spectrum acquisition and transmission module; a confocal array pinhole of the spectrum acquisition and transmission module is conjugated with a multi-focus laser array on the surface of a sample, and an optical fiber array fiber core is conjugated with the confocal array pinhole; the returned sub Raman spectrums are subjected to spatial filtering through a confocal array pinhole, are respectively coupled into corresponding optical fiber cores, and are transmitted to a spectrum analysis unit for synchronous detection of laser Raman spectrums of all focuses. By adopting the technical scheme of the invention, multi-focus confocal Raman spectrum synchronous detection is realized, the Raman spectrum signal intensity of each focus is guaranteed, and the Raman spectrum acquisition and imaging speed is improved.

The invention is applied to the technical field of optical microscopic imaging, and discloses a two-dimensional multi-focus optical resolution photoacoustic microscopic imaging system and an imaging method. The system comprises a laser, a lens assembly, a filtering pinhole, a reflector assembly, an optical diffraction element, a focusing lens, a self-made 3D scanner, an acoustic coding mask, a plane focusing ultrasonic transducer, an amplifier, a data acquisition card, a signal generator and an imaging processing terminal. According to the two-dimensional multi-focus optical resolution photoacoustic microscopic imaging system, a laser device outputs a laser beam, and the laser beam is projected to a subsequent optical diffraction element after being subjected to beam expanding by a beam expanding unit composed of a pair of plano-convex lenses and spatial filtering processing of a pinhole in sequence; and the imaging processing terminal obtains the digital photoacoustic signal and processes the digital photoacoustic signal to obtain an imaging image of the sample, so that the purpose of providing a solution for rapid OR-PAM in an economical and efficient manner is achieved, and the speed limitation caused by the laser repetition rate is broken.

Accommodating (re-focusable) lens system that includes multiple elastically-deformable lenslets sequentially disposed along an optical axis and that has an optical power that is varied by changing the degree of applanation of an area of contact between the constituent lenslets in response to variation of force applied to the lenses axially by an external element connected with or forming a part of the lens system housing and / or lenslet support element. Method for operating the same in a manner that reduces optical wavefront errors introduced by the process of refocusing thereby improving imaging characteristics of the lens system.

The invention relates to a spectrum detection device and method based on a multi-focus hollow focusing spot, and the method comprises the steps: enabling a laser beam emitted by a laser to be converted into a flat-topped beam through a beam shaper, and enabling the flat-topped beam to enter a first polarization modulation module through a first beam splitter prism, and converting the flat-topped beam into linearly polarized light; the linearly polarized light enters the spatial light modulator to be modulated into linearly polarized light with a vortex phase, and the linearly polarized light returns along the original path and is reflected by the first beam splitter prism, and then enters the second polarization modulation module to be converted into circularly polarized light with a vortex phase; circularly polarized light passes through the fly eye lens to form multi-focus hollow light spots which are distributed in a ring shape, passes through the focusing lens to form multi-focus hollow focusing light spots which are distributed in a ring shape and act on a plurality of to-be-detected object samples corresponding to the multi-focus hollow focusing light spots in position, various Raman scattering light is correspondingly generated, spectrum analysis is carried out on the Raman scattering light, and the Raman scattering light is analyzed to obtain the Raman spectrum of the to-be-detected object samples. And obtaining various types of spectral information. According to the invention, multi-focus parallel signal detection and acquisition are realized, and compared with a traditional single-point system, the analysis flux is greatly improved.

The application relates to the technical field of precision part detection, and discloses a precision part defect intelligent detection method based on deep learning. A multi-focus image sequence of a part surface is acquired, a multi-scale feature map set is generated through pyramid multi-scale decomposition, defect edge and texture information is extracted, a defect candidate region is determined, the feature map set is fused in combination with an attention mechanism, enhanced defect feature representation is generated, defect projection coordinates are extracted and depth values are calculated, a three-dimensional space position of the defect is acquired, a part surface geometric model is reconstructed, and a defect boundary curve is extracted, the defect width is calculated based on the boundary curve, an abnormal width section is identified and the defect change is tracked, the defect stability is judged, the image acquisition parameters are adjusted according to the defect stability, and optimized multi-focus image sequence acquisition is realized. The application realizes full-process intelligent detection of surface cracks from feature extraction, three-dimensional positioning to dynamic tracking, and significantly improves the detection precision and reliability.

The invention relates to the technical field of lenses, in particular to a multi-focus integrated optical lens system for an automobile headlamp, comprising: a lamp bowl, two sides of which are symmetrically and fixedly provided with matching bearing blocks; the lens supporting assembly is installed on the lamp bowl, and the lens supporting assembly is supported by being matched with the bearing block; the lens body is installed on the lens supporting assembly, and the lens body is supported through the lens supporting assembly; the supporting assembly locking mechanism is installed on the lamp bowl, drives the lens supporting assembly to move and locks the lens supporting assembly at the same time; when the supporting semi-ring frame is installed, positioning of the supporting semi-ring frame can be achieved through matching of the supporting semi-ring frame and the movable matching ring, then the lens body is positioned on the supporting semi-ring frame through the positioning ring plate, and synchronous fixing of the lens body and the supporting semi-ring frame can be synchronously completed by pushing the driving ring frame. The operation is simple, convenient and fast.

This invention relates to the field of microscopic optical imaging technology, specifically to a multi-dimensional encoded long focal depth optical field two-photon microscopic imaging method and system. The method and system include: designing a multi-dimensional encoded optical field, configured to flexibly adjust the intensity and position distribution of the optical field based on multifocal spatial multiplexing; inserting an optical field distribution shaping module into a traditional two-photon imaging system to change the phase position relative to the objective lens's back aperture; performing two two-dimensional scans of the sample based on the multi-dimensional encoded optical field scanning imaging to obtain two two-dimensional projection images, which are then determined by combining the lateral spacing distribution of the projection points and the fluorescence intensity ratio. This invention can simultaneously encode the sample distribution into the multi-dimensional information of intensity and position distribution in the projection images during the scanning imaging process, achieving efficient and rapid three-dimensional imaging by analyzing and locating the sample's three-dimensional distribution, improving the accuracy of sample depth analysis, and accelerating the three-dimensional imaging of the sample.

The invention discloses a spatial light modulator multi-focus adaptive generation method based on camera feedback. The device for realizing the method comprises a laser light source, a light beam expanding and energy adjusting module, a spatial light modulator, a focusing / imaging optical system, a camera for collecting a focal plane, and a control calculation unit connected with the spatial light modulator and the camera. After the control calculation unit loads the initial phase hologram, the camera is triggered to collect a multi-focus image, focus positioning and intensity measurement are completed, a multi-focus uniformity index is calculated, a correction factor is generated, target amplitude is updated through weight constraint, a new phase hologram is generated through iteration, and the new phase hologram is written back to the spatial light modulator. After the intensity uniformity reaches the standard, the uniformity of the full width at half maximum of the light spot is used as secondary discrimination, so that a stable homogenization effect is kept under the conditions of system aberration, non-ideal device, environment drift and the like, and the method is suitable for femtosecond two-photon polymerization micro-nano processing, parallel laser writing, optical tweezers and the like.

The invention belongs to the technical field of image fusion, and particularly relates to a multi-modal image fusion method based on Swi n-MOE, and the method comprises the following steps: 1, preparing training data; a multi-focus data set, a multi-exposure data set, an infrared image data set and a visible light image data set are selected, the data sets are divided into a training set, a verification set and a test set, and original images in the multi-focus data set and the multi-exposure data set and corresponding labels of the original images are preprocessed. According to the invention, a dual-channel adaptive attention fusion architecture and a decoder integrated with a hybrid expert system are innovatively designed, the limitation that an existing fusion model only aims at a single task is broken through, the information collaboration advantage in multi-task fusion is fully excavated, joint optimization of multiple fusion tasks is realized, and the fusion efficiency is improved. And knowledge migration and complementation among different fusion data sets are promoted.

Disclosed is a method of operating a stereoscopic image generating device communicating with a rendering server device including obtaining first tracking data by tracking a motion of a user during a reference time interval, obtaining second tracking data by tracking a viewpoint of the user during the reference time interval, providing the first tracking data to the rendering server device, receiving one or more focus image data corresponding to the first tracking data from the rendering server device, extracting one or more areas corresponding to the tracked viewpoint from each of the one or more focus image data based on the second tracking data, generating multifocal virtual reality (VR) image data by up-scaling the extracted one or more areas, and visually providing, by a display device of the stereoscopic image generating device, the multifocal VR image data to the user.

The present application belongs to the technical field of optical elements, and relates to a composite full-focus lens for delaying hyperopia development, wherein the first surface and the second surface of the lens are superimposed in front and back to form a convex lens with composite multi-focus and full-focus. The lens comprises: a central refractive power stable light area with a central refractive power, so that the refractive power stable light area can completely image on the retina; and a peripheral area located on the side of the refractive power stable light area, wherein the peripheral area has a multi-point defocus structure formed by a concave microlens array and has at least two peripheral refractive powers which decrease in a circumferential gradient, and the peripheral refractive power D1 satisfies the formula D1=D0(1-log 28 X)-n*Cos(X*Pi), wherein D0 is the central refractive power, the value range of n is 0.01-10, and X is the distance from the concave microlens to the center of the lens. The difference design is used to induce the elongation of the eye axis, delay the increase of the eye hyperopia, and is suitable for any hyperopia patient, and the effect is better for the hyperopia patient of teenagers.

This invention provides a multi-focus head-up display system and method for solving the visual fatigue problem that occurs with automotive head-up displays and for realizing augmented reality functionality. [Solution] A multi-focus augmented reality head-up display system including: an image projector that generates and emits multiple beams; an optical device that guides the multiple beams emitted from the image projector to their respective paths; a polarization adjustment device that adjusts the polarization state of the multiple beams incident from the optical device; and multiple HOEs (Holographic Optical Elements) that each receive the multiple beams emitted from the polarization adjustment device and project virtual image planes at different focal lengths.

This invention discloses a method for controlling the intensity of a multifocal array in a liquid crystal spatial light modulator, relating to the field of light field manipulation technology. The method includes: dividing the entrance pupil region into several sector regions with the center of the objective lens as the vertex, and assigning specific phase values ​​to each sector region to obtain a multifocal phase map; loading the multifocal phase map onto the spatial light modulator for phase modulation, and after entrance pupil phase encoding of the objective lens, obtaining a multifocal array on the focal plane; using image processing methods to calibrate the relationship between the central angle of the phase segmentation region and the light intensity distribution of the multifocal array; adjusting the central angle parameter of the phase segmentation region according to the relationship between the central angle and the light intensity distribution to control the light intensity distribution of the multifocal array; setting the corresponding phase distribution to obtain a multifocal array with controllable intensity distribution, focal position, and morphology. This invention provides efficient calculation for controlling the light intensity distribution of the multifocal array, enabling the acquisition of a multifocal array with controllable intensity, position, and morphology.

The invention discloses augmented reality equipment and an optical machine thereof, and relates to the technical field of digital interaction. Wherein the optical machine at least comprises an optical lens group, the optical lens group comprises a plurality of lenses which are sequentially arranged along the light propagation direction, and a diffractive optical structure is etched on one lens; the diffractive optical structure is a periodic structure changing in the radial direction, and diffraction angles of light rays at different radial positions are determined through the radial difference of periods; the diffractive optical structure is matched with the diffractive optical structure at the position of the optical lens group, and geometric refraction is carried out on different diffraction angles through a lens without the diffractive optical structure in the optical lens group, so that a plurality of focuses at different positions of an optical axis are obtained; and the focusing distance difference of the light of different diffraction orders of the diffractive optical structure is controlled within a preset range. According to the invention, the problems of cost increase and work efficiency reduction caused by the need of additional focusing equipment in the prior art can be solved, the multi-focus arrangement of the optical machine can be realized, and the multi-focus three-dimensional display requirement can be realized.

Embodiments of skin cosmetic treatment and / or imaging systems and methods are adapted to alter the placement and position of multiple (e.g., two or more) cosmetic treatment zones in tissue from an ultrasound beam from a transducer, to perform simultaneous multifocal treatment at multiple depths, and / or to vibrate the ultrasound beam from the transducer to alter the placement and position of multiple cosmetic treatment zones in tissue. The system may include a cane, a removable transducer module, and a control module. In some embodiments, the cosmetic treatment system can be used in various cosmetic procedures.

Disclosed in the present invention are a multi-focus scanning fluorescence differential microscopic imaging system and an imaging method, the imaging system comprising: a laser modulation module for generating circularly polarized light, a multi-focus module for converting the circularly polarized light into a parallel beam array, a spatial light modulator for generating a solid beam array or a hollow beam array, a scanning module for exciting a fluorescence signal of a sample, an imaging module for imaging the fluorescence signal, and a control module for controlling the spatial light modulator and the scanning module and performing data processing and image display. Also disclosed is the imaging method using the imaging system. The present invention has the advantages of achieving improvement over the single-point scanning imaging mode of conventional fluorescence differential microscopes, greatly increasing the speed of fluorescence differential microscopic imaging, achieving higher alignment accuracy, and allowing flexible control over the number of hollow beam arrays generated; theoretically, when an N×N point array is used to scan a sample, the final imaging speed of the system is N2 times that of the conventional fluorescence differential microscopes.

An optical display system and a head-mounted display electronics apparatus are disclosed. The optical display system comprises: an image-generating apparatus, which generates image light; and an image-viewing apparatus, which guides the image light to eyes of a viewer, wherein the image-viewing apparatus comprises an imaging optical assembly and a multifocal assembly placed, the multifocal assembly has at least two optical powers and is programmable to choose at least one of the optical powers at a given time.

The invention relates to a method and equipment for determining a transcranial magnetic stimulation target spot of an amblyopia patient, and belongs to the technical field of transcranial magnetic stimulation target spot positioning. Using a multi-focus visual stimulation normal form to respectively collect functional magnetic resonance scanning data of amblyopia eyes and healthy eyes of the amblyopia patient; preprocessing the functional magnetic resonance scanning data; respectively aiming at the functional magnetic resonance scanning data of the amblyopia eye and the healthy eye, extracting a visual stimulation induction activation diagram of the V1 region; taking the healthy eye as a reference to determine an individual activation abnormal area of the amblyopia eye: calculating an individual target point coordinate according to the individual activation abnormal area of the amblyopia eye. According to the method, functional magnetic resonance data obtained under a multi-focus visual stimulation normal form is fully utilized, two independent cortex functional defects (signal intensity reduction and spatial representation distortion) existing in an amblyopia patient can be evaluated and aimed at the same time, and a more accurate individualized target spot is provided for transcranial magnetic stimulation treatment; the treatment effect and the patient prognosis are expected to be improved.