755 results about "Wide field" patented technology

The invention discloses an industrial lens, and belongs to the field of optical lenses. An industrial lens comprises a first lens group and a second lens group which are coaxially arranged, a diaphragm is arranged between the first lens group and the second lens group, the first lens group comprises a first lens, a second lens and a third lens which are sequentially arranged from an object space to an image space, the first lens and the second lens have positive focal power, and the third lens has negative focal power; the second lens group comprises a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged from the object space to the image space, the fourth lens and the seventh lens have negative focal power, and the fifth lens and the sixth lens have positive focal power; the industrial lens satisfies the following relational expression: IH / FNO is greater than or equal to 3.12; fu1 / f is less than or equal to 2.1; fu2 / f is greater than or equal to 0.65; fOV / (D * TTL) > = 0.03; wherein IH is the maximum image plane height of the industrial lens, FNO is the aperture value of the industrial lens, fu1 is the effective focal length of a first lens group in the industrial lens, fu2 is the effective focal length of a second lens group in the industrial lens, f is the effective focal length of the whole industrial lens, FOV is the maximum field angle of the industrial lens, D is the head aperture size of the industrial lens, and TTL is the total optical length of the industrial lens. The industrial lens provided by the invention has the advantages of wide visual field, high resolution and compact size, and is of great significance in promoting the technical progress in the field of industrial automation.

A video having a wide field of view (e.g., spherical field of view) may be presented within a graphical user interface. The graphical user interface may include multiple punchouts of the wide field of view, with the number of punchouts set based on user interaction with a punchout-number element of the graphical user interface. Individual punchouts may be used as output of a virtual camera to provide views of differential spatial parts of the video. Presentation of different spatial parts of the video within different punchouts may be automatically synchronized based on the different spatial parts originating from a single video.

The invention relates to a wide-view C-shaped arm X-ray machine and an imaging method thereof.The wide-view C-shaped arm X-ray machine comprises a main machine, a C-shaped arm, an X-ray source, a flat panel detector, a first telescopic mechanism, a first translation mechanism and a first swing mechanism, the first telescopic mechanism is arranged at one end of the C-shaped arm and used for driving the first translation mechanism and the flat panel detector to stretch out and draw back, and the first swing mechanism is arranged at the other end of the C-shaped arm and used for driving the X-ray source to swing. The first translation mechanism is arranged on the first telescopic mechanism and used for driving the flat panel detector to translate, and the first swinging mechanism is arranged at the other end of the C-shaped arm and used for driving the X-ray source to swing so as to follow the position of the flat panel detector, so that X-rays emitted by the X-ray source can fall on the flat panel detector. The flat panel detector can move to different imaging positions to obtain images at different positions, and the images are synthesized into a larger image, so that the area of an imaging region is greatly increased, the observation view of a doctor is expanded, and the efficiency and safety of an operation are improved.

The invention discloses a multi-section type linear array X-ray source static real-time CT imaging system and an imaging method, and the multi-section type linear array X-ray source static real-time CT imaging system is provided with a scanning device and a ray source control unit; the scanning device is provided with a multi-section X-ray source array and a detector, the transmitting end of the multi-section X-ray source array faces the detector, and the multi-section X-ray source array is connected with the ray source control unit. The multi-section X-ray source array has the advantages that the multi-section X-ray source array can freely adjust the length and the included angle of the whole section, and the multi-section X-ray source array is suitable for a large-size measured object; 2, the multi-section X-ray source array can use fewer X-ray sources to realize the same wide view field, the design is more free, and the expansion is easier; 3, the distribution of ray sources can be relatively dispersed, the crossing of ray paths is less, and the interference of scattered signals can be obviously reduced; and 4, the exposure strategy of the scanning device can be controlled through the radiation source control unit, and the radiation dose utilization rate is optimized.

An x-ray apparatus and method can improve x-ray imaging in a variety of ways. For example, the improve x-ray apparatus can reduce scatter from x-ray images acquired by two-dimensional detectors. An improved 2D x-ray apparatus can provide 3D imaging for medical and / or industrial applications. An improved 2D x-ray apparatus and method can produce separate material imaging, and composition analysis for characterization and correlation of image, densitometry, and composition information of individual component or individual material within a single subject. Non-rotational 3D microscopy, combining 2D or 3D full field x-ray imaging and high resolution 2D or 3D x-ray microscopy or spectral absorptiometry and spectroscopy can achieve a higher resolution and wider field of view in x-ray imaging and quantitative analysis in 3D and real time. The x-ray apparatus can improve tracking and / or surgical guidance in time and / or space.

The invention discloses a pitaya robot system based on intelligent treatment and recuperation and a control method, and the system comprises a high-precision image collection and human body image collection and three-dimensional reconstruction module which is used for precisely recognizing and positioning a treatment region and acupoints; the core physician manipulation digitization module is used for finely capturing professional treatment manipulations and standardized recuperating manipulations of deep physicians for operating pitayas through a multi-dimensional sensor array and forming a manipulation model library; the intelligent strategy generation module based on artificial intelligence can call, fuse or optimize and generate an optimal execution scheme from a corresponding model library according to a mode selected by a user; and the high-precision and compliant force control robot execution module reproduces the digitized technique of the pitaya in a high-fidelity manner under the real-time closed-loop control of visual guidance and force sense feedback. Through the double-track parallel strategy, quantification, inheritance and popularization of the high-level pitaya therapy are achieved, and application of the high-level pitaya therapy is pushed to the wide field.

According to examples, a head-mounted display (HMD) headset may include at least two exterior-facing color cameras mounted on the front face of the HMD and in the same visual plane as the user's eyes. The at least two exterior-facing color cameras may collect images for stereo view synthesis. The HMD may include a processor, and a memory storing instructions, which when executed by the processor, cause the processor to perform stereo view synthesis with a machine-learning (ML) based technique including at least one of depth estimation, imaging sharpening, forward splatting, disocclusion filtering, or fusion.

The invention provides a lighting device and a dark field detection system and method, and the method comprises the steps: carrying out the pre-detection of the distribution positions of bright defects and dark defects on the surface of a to-be-detected wafer based on a wide-view-field imaging device, and obtaining a defect distribution map of the to-be-detected wafer; classifying the brightness degree of each defect in the defect distribution map, and obtaining light source brightness level distribution corresponding to each position of the wafer to be detected; in the dark field detection device, a light source is provided for a to-be-detected area of a to-be-detected wafer based on linear illumination light, each to-be-detected area on the to-be-detected wafer is scanned, the intensity of a detection light signal is regulated and controlled according to the brightness level of the corresponding light source, and the adjusted detection light signal is collected so as to realize dark field detection. During dark field detection, the detection sensitivity consistency of different pixel positions is good, the light source intensity utilization rate is high, and the image acquisition dynamic range is large.

Apparatuses and methods for microscopic analysis of a sample by simultaneously characterizing infrared absorption characteristics of a plurality of spatially resolved locations are described herein. These apparatuses and methods improve sampling times while collecting microscopic data regarding composition of a sample across a wide field.

The invention discloses a self-adaptive ultra-large field-of-view infrared image non-uniformity correction method, and belongs to the field of infrared image quality control. Firstly, an infrared camera laboratory radiometric calibration coefficient is used as correction input, initial parameters of non-uniformity correction are obtained through multi-scene image statistics, and then detector response with an ultra-large view field center and stable response is selected as a standard reference standard. Correcting the correction parameter of each pixel towards the two sides of the detector by adopting a specific sample matching technology according to a standard reference datum to finish the non-uniformity correction of a single detector module, then establishing a high-precision overlapping region correlation detection constraint model for adjacent detectors, and performing feature point matching correction by utilizing the overlapping pixels of the adjacent detectors to finish the non-uniformity correction of the single detector module. Correction parameters between adjacent detector modules are obtained and transmitted in sequence, so that gray level balancing of the multiple detector modules of the infrared camera is achieved, finally, full-field-of-view image self-adaptive dynamic stretching is achieved through histogram statistics, and non-uniformity correction of the whole image is achieved.

The invention discloses an automatic labeling method and system for small target detection data, a storage medium and electronic equipment, and the method comprises the steps: carrying out the target detection of a collected narrow-field camera image through a target detection model, obtaining a large target detection bounding box of the narrow-field image, carrying out the image registration of the wide-field camera image, and obtaining a large target detection bounding box of the narrow-field image; the method comprises the following steps: acquiring a homography matrix for converting a narrow-field-of-view image into a wide-field-of-view image, a registered narrow-field-of-view camera image and a wide-field-of-view small target bounding box before adjustment, and adjusting the position of the wide-field-of-view small target bounding box to obtain an accurately labeled small target bounding box. And training the target detection model by using the accurately labeled small target bounding box to obtain a trained small target detection model. According to the method, the labeling precision of the small target detection data is improved, and labeling missing is reduced.

The invention provides a light source multiplexing diamond NV color center wide field detection system and an illumination detection method. The system comprises a diamond containing an NV color center, an exciting light module, a first double-color sheet, an objective lens, a second double-color sheet, a wide field imaging module, an illumination imaging module and a microwave module, exciting light generated by the exciting light module irradiates the first double-color piece, is guided to the objective lens, and irradiates the diamond after being transmitted by the objective lens so as to excite the NV color center of the diamond to generate fluorescent light; the objective lens is of an infinity type; the exciting light is irradiated to a sample to be detected after being transmitted by the diamond; fluorescent light and exciting light from a sample to be detected are collected by the objective lens, then transmitted to the first double-color piece and guided to the second double-color piece through the first double-color piece, the second double-color piece guides the fluorescent light to the wide-field imaging module for imaging, and the exciting light in the second double-color piece is guided to the illumination imaging module for imaging. Illumination can be achieved in the exciting light working state, exciting light switching operation in the prior art is avoided, and efficiency can be remarkably improved.

The system uses LiDAR to determine crowd density analysis and flow. The system places a plurality of sensors and distributes them in an area where a crowd will gather. To create a comprehensive 3D representation of the environment, the LiDAR sensor emits numerous laser pulses in different directions, covering a wide field of view. The sensor collects the returning light for each pulse. The collected data, consisting of distance measurements and their corresponding angles, is processed to create a point cloud. The generated point cloud can be further processed and analyzed to extract various information about the environment.

The invention discloses a bionic visual positioning system and method based on multispectral perception and a storage medium, and the system comprises a front-end multidimensional optical perception module, a mesopic vision preprocessing module and a rear-end fusion perception and target positioning module, the front-end multi-dimensional optical sensing module is used for performing optical imaging, spectral decomposition and polarization imaging; the mesopic vision preprocessing module is used for carrying out image preprocessing and optical flow estimation; and the rear-end fusion perception and target positioning module is used for feature fusion and target identification and positioning. According to the bionic visual positioning mechanism, through a bionic compound eye structure + multispectral + polarization + optical flow fusion perception strategy, the perception bottleneck of a traditional visual system in a high-dynamic and complex illumination environment is effectively solved, and the bionic visual positioning mechanism has the advantages of high robustness, low delay, wide field of view, multiple modes and the like; the method is especially suitable for application scenes such as automatic driving, unmanned aerial vehicles, robots and the like with extremely high requirements on real-time performance and reliability.

Users exploiting near-to-eye (NR2I) displays for augmented reality and / or correction of low vision are typically wearing these NR2I displays for specific tasks or for extended periods of time, potentially all their time awake. Conflicting tradeoffs between user comfort and minimal fatigue and strain during use, ease of attachment, minimizing intrusiveness and aesthetics should be concurrently balanced with providing an optical vision system that provides the user with a wide field of view, high image resolution, and a large exit pupil for eye placement with sufficient eye clearance. Accordingly, embodiments of the invention provide NR2I displays meeting these conflicts whilst also addressing the inherent variations between user in respect of their head dimensions, head and eye geometry, as well as adapting the displayed content to reflect the user's task at-hand, visual defects or degradations, visual focus and intent upon various regions-of-interest within their field of view. Such HMDs providing enhanced user experiences.

In an embodiment, a wearable multimedia device, comprises: a housing configured to attach to clothing of a user; a wide field-of-view camera embedded in the housing; one or more processors; memory storing instructions that when executed by the one or more processors, causes the one or more processors to perform operations comprising: capturing, using the camera, an image of a scene that includes a bar code displayed by a terminal device; determining an intent of the user to read the bar code; in accordance with the user's intent to read the barcode: cropping the barcode from the image of the scene; establishing, using the bar code, a communication channel with the terminal device; receiving, using the communication channel, transaction data from the terminal device; and responsive to the transaction data, sending, using the communication channel, authentication credentials to the terminal device.

The invention discloses an unmanned aerial vehicle large-view-field target detection method combining an SAR, a visible light sensor and an infrared sensor, and the method comprises the following steps: S1, obtaining a target region SAR image, and obtaining a first image set; obtaining a second image set according to the first image set; s2, obtaining a first data set according to the second image set; the first data set comprises target longitude and latitude information; s3, target locking is carried out on the visible light sensor and the infrared sensor according to the first data set, visible light imaging and infrared imaging are carried out, and a third image set and a fourth image set are obtained respectively; s4, obtaining a fifth image set according to the third image set; obtaining a sixth image set according to the fourth image set; and S5, fusing the fifth image set and the sixth image set according to a first condition to obtain a seventh image set, and completing target detection. The invention further provides an unmanned aerial vehicle large-view-field target detection system combining the SAR, the visible light sensor and the infrared sensor.

An x-ray apparatus and method can improve x-ray imaging in a variety of ways. For example, the improve x-ray apparatus can reduce scatter from x-ray images acquired by two-dimensional detectors. An improved 2D x-ray apparatus can provide 3D imaging for medical and / or industrial applications. An improved 2D x-ray apparatus and method can produce separate material imaging, and composition analysis for characterization and correlation of image, densitometry, and composition information of individual component or individual material within a single subject. Non-rotational 3D microscopy, combining 2D or 3D full field x-ray imaging and high resolution 2D or 3D x-ray microscopy or spectral absorptiometry and spectroscopy can achieve a higher resolution and wider field of view in x-ray imaging and quantitative analysis in 3D and real time. The x-ray apparatus can improve tracking and / or surgical guidance in time and / or space.

An information handling system camera provides a 117 degree field of view with low distortion by capturing visual images through a lens having eight lens elements. The first lens element closest to the object, the third lens element and the sixth lens element each have a glass material, the remaining lens elements have a plastic material. The first two lens elements and the last lens element each have a negative refractive power and the remaining lens elements have a positive refractive power. Lens elements two and four through eight each have aspherical surfaces.

The present invention addresses the problem of providing a compact, lightweight, and inexpensive imaging device that has a wide angle of view. [Solution] A zoom lens comprising a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a third lens group arranged in this order from the object side to the image side, the second lens group including a plastic lens having a negative refractive power, and the zoom lens having specific optical characteristics expressed by a specific formula.

Embodiments of the present disclosure generally relate to an optical system having a lens system configured to have a wide field of view and high resolution. The optical system includes three or more lens groups with ability to combat optical aberrations and produce a pupil outside of the lens group. The lens system as an image projection system projects a pattern or image rendered on a flat reticle or display of finite distance to the infinity. In an imaging system, the lens system collects light from infinity and forms an image of that object on a sensor.

The invention belongs to the field of biology, relates to a salmonella gene detection technology, and discloses a one-pot detection method combining LAMP (loop-mediated isothermal amplification) and CRISPR / BrCas12b mediated nucleic acid molecule detection. The method comprises the following steps: designing an LAMP primer, a small guide RNA (Ribonucleic Acid) and a transcription template overlapping PCR (Polymerase Chain Reaction) primer, performing loop-mediated isothermal amplification, constructing CRISPR / Cas shearing recognition (Cas-LAMP), constructing a single-tube one-pot reaction system of the CRISPR / Cas shearing recognition, detecting the specificity and sensitivity of Cas-LAMP amplification, and the like. In order to solve the technical problem that amplification and shearing recognition cannot be carried out synchronously, the invention provides a Cas-LAMP technology capable of linking two-step reaction of amplification and shearing recognition, and accurate, sensitive and rapid detection of nucleic acid molecules is realized in an in-vitro single reaction tube system. Compared with a traditional nucleic acid molecule detection method, the method has the following advantages that one-pot detection can be directly carried out without step-by-step operation, high sensitivity and strong specificity are achieved, and rapid field detection can be achieved. The method provides technical support for conventional nucleic acid detection, and has a wide field instant detection application prospect.

The invention discloses a one-dimensional ultra-wide field-of-view ultra-high spectral resolution dispersion coherent imaging spectrometer, which belongs to the technical field of spectral imaging, and comprises a first microlens array used for obtaining incident light of a one-dimensional ultra-wide field-of-view in a horizontal plane; the plurality of optical fibers are used for transmitting incident light of a one-dimensional ultra-wide field of view; the second micro lens array is used for collimating incident light from each optical fiber into broadband parallel light beams; the grating beam splitter interferometer is used for dispersing the broadband parallel light beams into a plurality of narrow-band parallel light beams with different propagation directions; the cylindrical lens is used for converging the two paths of coherent light of each narrow-band parallel light beam to a target block of the detector, and converging the narrow-band parallel light beams with different propagation directions to different target blocks respectively; and the detector is used for obtaining a continuous broadband ultra-high resolution spectrum according to the two paths of coherent light received by each target block. According to the invention, a one-dimensional ultra-wide field of view is obtained in a horizontal plane, and ultra-high spectral resolution can be obtained.

The invention provides a large-view-field-oriented dispensing method and system, and the method comprises the steps: obtaining imaging parameters of an industrial camera above a dispensing machine, controlling a dispensing head to carry out sparse sampling in the height direction, carrying out grid scanning at a plurality of discrete height layers, and obtaining object image mapping relation matrixes corresponding to the discrete height layers; acquiring the surface height of a to-be-dispensed workpiece, selecting the object image mapping relation matrix of the discrete height layer which is closest to the surface height of the workpiece and is smaller than or equal to the surface height of the workpiece as an initial object image coordinate conversion matrix of the workpiece, acquiring the image coordinate of the current dispensing point of the workpiece, and determining the dispensing point of the workpiece according to the height difference between the surface height of the workpiece and the selected discrete height layer. Obtaining a physical coordinate offset according to imaging parameters of the industrial camera; the initial position of the dispensing point is determined through sparse sampling, the offset of the dispensing point based on the initial position is determined based on the imaging geometrical relationship, the dispensing point can be rapidly and accurately positioned, and the efficiency and precision of dispensing operation are improved.

The invention relates to an interactive display method and device, augmented reality equipment, terminal equipment and a medium. The interactive display method comprises the steps that communication connection is established between the augmented reality equipment and target terminal equipment; and based on the communication connection, displaying a first virtual interface in a display picture of the augmented reality device, the first virtual interface being generated by the target terminal device. According to the method and the device, interconnection and intercommunication between the augmented reality device and the target terminal device are realized, the large-view characteristic of the augmented reality device is exerted, an extended display effect is achieved on a real screen of the target terminal device, the display content area of the target terminal device is increased, the use efficiency of a user is improved, and the use experience of the user is improved.

The invention, which belongs to the technical field of spectral imaging, discloses an ultra-wide-band ultra-wide-field-of-view high-spectral-resolution real-time imaging spectrometer comprising a first micro-lens array, a plurality of optical fibers, a plurality of second micro-lens arrays and a plurality of assemblies. First micro lenses in each column of the first micro lens array are arranged on a vertical plane arc, and micro lenses in each row are arranged on a horizontal plane straight line, so that incident light of a one-dimensional ultra-wide view field is obtained in real time; through optical fiber coupling, incident light is transmitted to the second micro lens array to be collimated into parallel light beams; according to the components, light of different wavebands is processed through the optical filter, the plane transmission grating and the detector, first-order diffraction light beams of different wavelengths in the different wavebands are received by the detector after diffraction, and space information and spectral information are obtained in real time according to an irradiated target block. The imaging spectrometer provided by the invention has the advantages of ultra-wide wave band, ultra-wide field of view, high spectral resolution, real-time measurement, compact structure and high stability, and is suitable for a remote sensing photoelectric reconnaissance detection system.

The invention provides a large-view-field multi-view camera calibration method, system and device and a medium. The method comprises the following steps: acquiring a multi-view-field target plate image in a large-view-field plane by using a monocular camera; the target plate comprises a plurality of coding targets; obtaining target feature points of the plurality of coding targets based on the target plate image so as to correspondingly obtain target code values based on the target feature points; and obtaining a three-dimensional point coordinate of each target feature point based on each target code value, and carrying out multi-view camera calibration based on the three-dimensional point coordinates. According to the invention, the large-view-field multi-view camera can be calibrated, and the calibration precision is high.

The invention relates to a small-caliber optical lens, and aims to realize the design targets of high imaging quality, ultra-wide field of view and miniaturization by optimizing parameters such as focal power, curved surface shape, thickness and the like of a lens. The lens is composed of four plastic lenses which are a first lens (P1) with negative focal power, a second lens (P2) with positive focal power, a third lens (P3) with positive focal power and a fourth lens (P4) with positive focal power in sequence from an object side to an imaging surface along an optical axis. The design meets various optical parameter conditions, for example, the focal length ratio (-2 < f1 / f2 <-0.5, 0.2 < f3 / f4 < 1.2), the relation between the effective focal length and the focal length of each lens (for example,-3.004 < f1 / f <-2.554) and the like. In addition, the four lenses are all XY polynomial curved surfaces, and the mechanical structure and the optical performance are optimized. The lens adopts the design of four plastic lenses, is compact in structure, is suitable for miniaturized equipment, can capture more light rays, is suitable for low-light conditions, and can be used for mobile phone cameras, security monitoring equipment and the like.

The invention belongs to the technical field of optical measurement, and particularly relates to a digital holographic microscopy system phase distortion correction method based on adaptive optics, which has the advantage that optical wave complex amplitude information can be acquired in a wide field by means of digital holographic microscopy, and uses a distortion phase image measured by a digital holographic microscopy system as input to correct phase distortion of the digital holographic microscopy system. And iterating the image by using an optimization algorithm until the image evaluation function converges, and obtaining a correction pattern for removing phase distortion. And uploading the correction pattern to a self-adaptive correction device and modulating the wavefront of the light wave to finally realize accurate compensation of phase distortion. The method can provide an in-situ, accurate and rapid phase distortion correction mode and means for the field of optical microscopic imaging, especially the field of quantitative phase imaging.

The invention discloses a shark fin intelligent antenna for a vehicle-mounted camera, comprising a base, a shark fin shell, a PCB board, an external antenna and a camera acquisition device. The shark fin shell is assembled on the base, the shark fin shell and the base are enclosed to form an internal cavity, a through mounting hole matching the camera acquisition device is opened on the shark fin shell, the PCB board and the external antenna are accommodated in the internal cavity, the external antenna adopts an intelligent antenna combination and is fixedly mounted on the PCB board, the acquisition end of the camera acquisition device is embedded in the mounting hole of the shark fin shell, the other end of the camera acquisition device is accommodated in the internal cavity, and the shark fin antenna is mounted on the roof of the vehicle at a relatively high position, so that the camera acquisition device has a very wide field of view and plays a function of assisting a central rearview mirror.