186 results about "CMOS sensor" patented technology

The invention discloses an intelligent steel pipe surface defect recognition system based on deep learning, and particularly relates to the technical field of pipe surface defect analysis. An annular polarization light source array and a high-frame-rate CMOS sensor are adopted to synchronously collect visible light and near-infrared multi-polarization images; a surface normal is calculated based on Stokes parameters, mirror surface suppression and diffuse reflection enhancement are realized, a defect candidate area is generated by fusing multi-scale Laplacian pyramid residual error and Renyi entropy segmentation threshold positioning, multi-physical quantity registration is completed through white light interference and infrared thermal imaging, a six-channel feature cube is constructed, and a three-dimensional image is obtained. According to the method, space, spectrum and thermal characteristics are jointly extracted in the multi-head attention convolutional neural network, the confidence coefficient is evaluated in combination with Jensen-Shannon divergence, and the polarization angle and the focal length are dynamically adjusted according to the confidence coefficient, so that closed-loop parameter self-optimization is realized, and the micro-scale pitting corrosion and millimeter-scale crack detection precision is remarkably improved.

Provided in the present invention are an imaging device and method for turbid oil abrasive particles based on polarized image enhancement, which belong to the technical field of image processing. The imaging device of the present invention includes a CMOS fixing device, a Stokes polarized CMOS sensor, an optical lens sleeve and an optical magnifying glass, where the Stokes polarized CMOS sensor includes a CMOS sensor and a Stokes analyzer. By using a polarization characteristic difference between scattered light of lubricating oil media and reflected light of abrasive particles, Stokes vector information is measured in real time under turbid lubricating oil scenes, the scattered light of the media is filtered out, image quality of the abrasive particles is improved, coverage duration for monitoring abrasive particle imaging is effectively prolonged.

The invention discloses an electrostatic induction and optical imaging principle-fused online monitoring device and method for wear particles of a water-lubricated bearing, and belongs to the field of state monitoring of mechanical equipment. The device comprises a square insulation detection cavity, a detection electrode array, an electromagnetic shielding shell, a high-speed optical imaging module and a signal processing unit, the square insulation detection cavity is installed in a bearing lubrication water loop. The detection electrode array is fixed to the outer wall of the cavity and used for capturing electrostatic signals generated when the abrasion particles pass through. The electromagnetic shielding shell wraps the detection cavity and is grounded through a wire to eliminate environmental electromagnetic interference. The high-speed optical imaging module integrates a high-magnification microscope lens and a CMOS sensor, is coaxially mounted with the detection cavity, and obtains the morphology characteristics of the wear particles in real time; and the signal processing unit performs multi-modal data fusion analysis on the electrostatic signal and the optical image. Through cooperative detection of electrostatic induction and optical imaging, the monitoring precision and reliability of the wear particles of the water-lubricated bearing are remarkably improved.

Event-based sensor systems and method for operating event-based sensor systems are disclosed. A sensor system includes an array of sensor elements arranged in columns and rows, wherein each sensor element in the array of sensor elements includes, a detector circuit, an active pixel sensor (APS) circuit, and a dynamic vision sensor (DVS) circuit, the DVS circuit including an event trigger switch configured to control application of a signal on an event trigger line in response to a pixel-specific event trigger signal.

The invention provides an image sensor for online detection of oil quality, and the image sensor comprises a sensor body which is provided with an oil inlet, an oil outlet and a detection chamber, the detection chamber is arranged between the oil inlet and the oil outlet, and the detection chamber comprises a cavity and a transparent protection plate arranged at the top of the cavity; the magnetic adsorption assembly comprises an annular electromagnet arranged above the transparent protection plate; the image acquisition assembly is arranged on the upper surface of the transparent protection plate and comprises an imaging lens, a CMOS sensor and an annular light source; the processing circuit is used for preprocessing and analyzing the acquired optical image; and the control circuit is used for controlling the coil electrifying preset time so as to adsorb the abrasive particles and control image acquisition. According to the invention, real-time and accurate detection of the abrasive particles in the oil can be realized, and the morphology feature information of the abrasive particles can be obtained.

High dynamic range (HDR) imaging, and so-called ‘denoising’ of CMOS-sensor-derived image data, are a universally pursued and evolving technical art. This disclosure further advances the art, honing in on the measurable non-uniformities of CMOS sensors as one of the major challenges to increasing dynamic range and decreasing noise. Simplicity and low cost of mass-scale deployment of these approaches become a central commercial requirement. Provisions are described for measuring sensor non-uniformities, generating efficient informational storage of these non-uniformities, then using this stored information during operation of a sensor in a wide variety of camera applications. Extensions of dynamic range on the order of 2 to 4 bits per pixel are typical.

The invention relates to the technical field of ultrasonic scanning microscopes, in particular to a system and a method for measuring surface unevenness and warping of an ultrasonic scanning microscope. The system comprises a water tank, a light emitting device, a light receiving device and a signal processing module, the light emitting device generates line laser through a semiconductor laser and an optical shaping module, and scanning is achieved through a high-precision galvanometer. The light receiving device is provided with a narrow-band filter, a telecentric lens and a CMOS sensor and is used for capturing a light spot image; the signal processing module integrates sub-pixel positioning, galvanometer nonlinear correction, self-adaptive filtering and temperature compensation algorithms, light spot center sub-pixel-level positioning is achieved through Gaussian curved surface fitting, galvanometer correction and temperature drift compensation are combined, the measurement precision and stability are improved, and finally high-precision height information is fed back to an ultrasonic scanning system. According to the invention, the accuracy and reliability of surface unevenness and warping measurement are improved.

An image sensor comprises: an active pixel sensor region outputting a pixel signal for generating an image; and a periphery region surrounding the active pixel sensor region, where the active pixel sensor region and the periphery region each include a sensor layer that includes a plurality of pixels and extends through the active pixel sensor region and the periphery region, where the active pixel sensor region comprises (i) a meta-photonic structure facing the sensor layer, and (ii) a dielectric layer, the meta-photonic structure comprising a plurality of nano-structures arranged to have a meta pattern with the dielectric layer filled among the plurality of nano-structures, and where the periphery portion comprises (i) the dielectric layer integrally extending from the active pixel sensor region and (ii) a crack stopper having a groove shape formed within the dielectric layer.

The invention discloses an intelligent portable blood vessel detector and a use method, and relates to the technical field of blood vessel detection equipment, the intelligent portable blood vessel detector comprises a shell, a detection head, a display screen and a wrist strap, a main control chip and a power supply are arranged in the shell, the detection head is movably arranged on the shell, the main control chip is electrically connected with the detection head, and the display screen is electrically connected with the wrist strap. A polarization filter, a beam splitter prism, a multispectral CMOS sensor, a laser projector and a linear motor are arranged in the detection head, the display screen is arranged on the shell, and the wrist strap is arranged on the shell. When blood sampling is carried out on a patient, the puncture needle can help a worker to improve the success rate during puncture, and therefore the working time is saved.

The invention provides a signal synchronous acquisition and processing system and method for white light interference focusing, and is applied to the technical field of semiconductor measurement, the signal acquisition and processing system is used for overlay error measurement in the semiconductor measurement technology, and a CMOS sensor and an avalanche breakdown diode sensor are adopted. High-precision white light interference measurement is realized through components such as a beam splitter, a tube mirror, a halogen light source, a shutter, a microscope objective, a reference mirror and piezoelectric ceramics; a signal conditioning channel is designed and comprises a passive attenuation circuit, an impedance conversion circuit, a gain amplification circuit and an ADC (Analog to Digital Converter) driving circuit, so that accurate acquisition and processing of signals are ensured; the signal acquisition and processing system evaluates acquired interference signals through a template matching method, and realizes rapid determination of a zero optical path difference position and automatic focusing of wafer. The system has the advantages of high stability, high accuracy, high cost effectiveness and compact space structure, and is suitable for high-precision semiconductor measurement equipment.

The invention discloses a wide dynamic air-to-ground CMOS imaging performance test method and device, and the method comprises the steps: building a corresponding optical axis adjustment environment, a CMOS wide dynamic index test environment, and a resolution test environment, and testing the OECF, resolution, color, shadow, and distortion of an imaging module; three influence factors including a dynamic range DR, a signal-to-noise ratio SNR and visual noise VN are detected through an OECF test, Siemens star and bevel edge indexes are detected through a resolution test, and a color distance delta E, brightness delta L, chromaticity delta C, hue delta H and visual noise VN are detected through a color test. Brightness shadow Shading, a color shadow average value CIE [delta] Eab, the maximum difference [delta] VN of visual noise and an optical center are detected through shadow testing, lens geometric distortion LGD, chromatic aberration CA and longitudinal chromatic aberration LCA are detected through distortion testing, CMOS sensor imaging performance analysis is carried out through OECF, resolution, color, shadow and distortion testing, and imaging module performance indexes can be obtained more accurately.

The invention provides a polarization integrated imaging detection module applicable to a severe environment, and relates to the technical field of image detection. The system comprises an optical lens, a polarization CMOS sensor, a data transmission link, a control transmission link and an on-chip integrated processing system. Wherein the exposure consistency of the multi-polarization-angle images is ensured by performing acquisition and exposure adjustment on the images at four polarization angles and executing a brightness normalization algorithm, so that the problem of brightness unbalance during multi-image fusion of a traditional exposure algorithm is avoided; besides, through local dynamic range optimization, global gamma correction and a multi-scale fusion method, texture and brightness characteristics at different polarization angles are reserved, and clear and reasonably exposed image generation is realized. The defects in the aspects of atmospheric haze, underwater imaging and strong reflected light processing in the prior art are overcome, high-resolution and high-frame-rate real-time clear imaging is achieved, and reliable image support is provided for various application scenes.

The invention discloses a radioactive waste liquid surface pollution multipoint array detection system and method, and relates to the technical field of nuclear radiation detection. The radioactive waste liquid surface pollution multipoint array detection system comprises a main body fixing frame, a mobile control device, a detector and an upper computer, a plurality of mounting holes arranged in a planar array are formed in the main body fixing frame; the movement control device controls the main body fixing frame to move; the plurality of detectors are mounted in the mounting holes of the main body fixing frame; the upper computer is used for regulating and controlling parameters of the CMOS sensor and storing, displaying, analyzing and processing frame images. The radioactive waste liquid storage tank liquid level pollution monitoring method is applied to a radioactive waste liquid surface pollution multipoint array detection system and is used for monitoring alpha and beta pollution areas of a radioactive waste liquid storage tank liquid level. The whole liquid level area of the radioactive waste liquid storage tank is covered at a time through the detachable detector group arranged in the plane array, and a pollution distribution panorama can be obtained through single-time measurement.

The invention relates to a countering system, device and method for a battlefield unmanned aerial vehicle target, and belongs to the technical field of unmanned aerial vehicles. The laser countering module is used for burning a CMOS sensor of the unmanned aerial vehicle, so that the unmanned aerial vehicle loses a graph transmission function; and the data processing and control module is used for analyzing the position of the unmanned aerial vehicle according to the detection result of the detection module and controlling the laser countering module to attack the unmanned aerial vehicle according to the analyzed position of the unmanned aerial vehicle. And the detection module comprises an optical detection assembly and a laser detection assembly. And the laser countering module comprises a plurality of groups of laser arrays covering visible light, near infrared and short wave infrared bands. The CMOS sensor of the unmanned aerial vehicle is ablated and damaged, so that the visual field of the unmanned aerial vehicle is lost, and the purpose of countering the unmanned aerial vehicle is achieved.

A video to event prediction pipeline system includes a backbone conversion network having a model that is configured to receive a raw active pixel sensor video sequence and convert it into 3D predicted voxels. An event sampling module is configured to receive the 3D predicted voxels and create event timestamps in a continuous scale by leveraging nonlinear dynamics of event firing trends in each voxel of the 3D predicted voxels. The backbone conversion network comprises a series of training loss function modules, the training loss function modules teaching the backbone conversion network to account for variations in the active pixel sensor video sequence caused by adjustable camera parameters of the active pixel sensor video sequence.

The present invention relates to the field of optical elements, systems or instrument technology, specifically to a temperature field testing method based on colorimetric temperature measurement combined with multispectral imaging, which solves the technical problems of low temperature field temperature measurement reconstruction accuracy and low temporal and spatial resolution in existing temperature measurement methods, and includes constructing a temperature field measurement system for a solid engine combustion chamber, using LIBS technology to determine the spectral range and temperature measurement range of the temperature field of the solid engine combustion chamber, coupling and packaging a multispectral filter with a CMOS sensor, calibrating the multispectral camera using the blackbody furnace, obtaining a spectral image of the temperature field using the multispectral camera, obtaining a two-dimensional temperature field of the solid engine combustion chamber using a colorimetric temperature measurement method, and performing a comprehensive evaluation. The present invention can obtain multispectral information of a flame in a solid propellant combustion chamber, and realize high temporal and spatial resolution detection of a two-dimensional temperature field in a solid engine combustion chamber.

The invention relates to a dual-core heterogeneous CMOS drive circuit of a micro spectrometer in the technical field of spectrum detection and integrated circuit design, which comprises a dual-core heterogeneous main control chip, a drive chip, an AD acquisition chip, a built-in algorithm module and a data interface module, and is characterized in that the dual-core heterogeneous main control chip comprises an ARM core and an FPGA core; the ARM core converts an instruction sent by main control equipment into a standardized control signal, the FPGA core receives the control signal output by the ARM core and generates a driving time sequence signal, and the driving chip drives the CMOS sensor to output a video signal; the AD acquisition chip is driven to carry out data acquisition on video signals, original analog signals in the video signals are converted into digital signals to obtain original data of a spectrum, the ARM core packages the original data and transmits the original data to the built-in algorithm module, and a detection result report is generated. And the ARM core transmits the original data and the detection result report back to the main control equipment through the data interface module.

A circuit, such as that of a CMOS sensor, is described, having individually addressable transfer transistors and individually addressable reset transistors. Through these individually addressable transistors, pixels of the same or different sizes and / or the same or different exposure times within different regions of interest can be efficiently processed. Different regions of interest can be exposed simultaneously and read out independently.

The present application relates to the technical field of image sensor calibration, and particularly relates to a processing method and system of a hybrid event and frame sensor, computer equipment and a medium; the method comprises the following steps: acquiring original data of the hybrid event and frame sensor; performing a noise calibration operation on an intensity frame to generate an active pixel sensor noise model and a net intensity signal; performing an event probability coupling operation on an event stream to generate an event visual sensor event probability model; and performing unified collaborative processing on the active pixel sensor noise model and the event visual sensor event probability model to output uniformly calibrated sensor data. In this way, a unified and reproducible cross-modal calibration framework can be provided to solve the technical problems of existing calibration technologies, such as weak physical coupling, insufficient calibration granularity and black box implementation, and to provide a unified, reproducible and high-precision sensor data calibration output for high-speed and high-dynamic-range mobile perception applications.

The invention belongs to the technical field of sensor manufacturing, and particularly relates to a photoelectric sensor manufacturing method which comprises the following steps: 1) forming a mounting through hole and a light outlet hole in a transmitting end shell; 2) arranging a light source seat coaxially matched with the mounting through hole; 3) fixing the light source seat in the mounting through hole by using glue; 4) arranging a light inlet hole and a wire hole on the receiving end shell; (5) fixedly adhering the CMOS sensor to the center of the front surface of the fixed plate; (6) two glue injection holes are formed in the receiving end shell, and gaps are preset between the glue injection holes and the wire holes; 7) arranging a CMOS sensor and a circuit board near the wire hole in the receiving end shell; in the manufacturing process, the light emitted by the light source can be always parallel to the axis of the light outlet hole of the transmitting end shell during assembly by a worker, and the glue cannot be dripped into a sensing area on the CMOS sensor in the glue dripping process by the worker.

This invention discloses an image processing method and electronic device for mitigating LED flicker based on motion compensation, applicable to flicker suppression caused by pulsed LED light sources in vehicle cameras, intelligent transportation systems, and consumer electronic devices. When the alternating on / off states of LEDs cause block matching failures in traditional methods, this invention accurately predicts motion vectors through weighted fusion of spatial / temporal proximity vectors; it also solves the problem of cross-frame coordinate mapping misalignment by generating a reverse motion vector map, ensuring the accuracy of forward / backward pixel tracing; finally, through cross-frame weighted fusion, combining mean and maximum value weights, flicker is eliminated while avoiding the loss of LED brightness information. This invention solves the problem that existing technologies require special CMOS sensor hardware to handle LED flicker.

The invention provides eye adjusting equipment integrating eyelid opening, fundus photography and a data port, and belongs to the technical field of intelligent medical wearable equipment. The equipment comprises a glasses frame main body, a non-invasive eyelid opening mechanism, a high-resolution fundus photographing module, diopter-adjustable lenses, a data processing unit and a wired and wireless data port. The eyelid opening mechanism adopts a medical silica gel flexible opening sheet and a push rod, so that safe and automatic eyelid separation is realized; the fundus photographing module supports clear imaging at a field angle of 30-50 degrees based on infrared illumination and a CMOS sensor, and has pupil tracking and automatic focusing functions; the built-in electric control zoom lens can dynamically adjust the diopter from 6.0 D to + 4.0 D. The problems that existing fundus examination equipment is large in size, complex to operate, serious in eyelid shielding, unable to use and the like are solved, and the fundus examination equipment has remarkable clinical application value and industrialization prospects.

This invention discloses a method for correcting image distortion in a miniature microscope based on optical simulation and displacement field driving, comprising the following steps: establishing an optical model of the miniature microscope, performing field curvature analysis, and generating a grid distortion map; extracting distortion data from sampling points and converting coordinate values ​​to pixel units according to the pixel size of the CMOS sensor; constructing a continuous displacement field covering the entire image using an interpolation algorithm based on the discrete sampling point data; performing geometric correction on the distorted image based on the displacement field, specifically including: correcting the original distorted image to a geometrically correct image based on the displacement field, employing an inverse mapping strategy, for each pixel position in the corrected image, querying its corresponding position in the original distorted image, and resampling; and evaluating and visualizing the correction results. This invention improves the accuracy of image distortion correction and enhances the imaging quality of the miniature microscope.

The invention relates to an acquisition method and system supporting fingerprint acquisition at any window position. The method comprises the following steps: acquiring image data on a window; performing image processing on the acquired image data, identifying and positioning a fingerprint area in a window, and judging a dry and wet state of a fingerprint; parameters of acquisition equipment are adjusted according to the identified fingerprint area information and fingerprint dry and wet state information, and the parameters comprise the acquisition position of a CMOS sensor, the size of an acquired image, exposure time, a gain value, light source brightness and the like; the acquisition device acquires a fingerprint image according to the adjusted parameters; and carrying out adaptive contrast enhancement processing based on histogram analysis on the acquired fingerprint image. According to the invention, the fingerprint area position in the window can be identified in real time, and fingerprints can be collected at any window position; meanwhile, the system also has a fingerprint dryness and humidity detection function, optimizes parameters of acquisition equipment in real time, and ensures that the quality of the acquired fingerprint image is always kept at a relatively high level.

The application discloses an online proton imaging ion spectrometer diagnosis system, relates to the fields of plasma physics and nuclear detection, and comprises an online proton imaging module, an online Thomson ion spectrometer module and a shielding aiming module; the shielding aiming module comprises a shielding cavity and an aiming laser pen; the online proton imaging module comprises a metal filter, a first scintillator and two proton imaging acquisition assemblies; the proton imaging acquisition assembly comprises a first optical fiber panel attached to the first scintillator and a first CMOS sensor attached to the first optical fiber panel; the online Thomson ion spectrometer module comprises an ion beam deflection mechanism and an ion spectrum diagnosis acquisition assembly; the ion spectrum diagnosis acquisition assembly comprises a light-proof aluminum film, a second scintillator, a second optical fiber panel and a second CMOS sensor which are sequentially and superposedly arranged. The application reduces the size of the whole system, can simultaneously carry out online proton imaging and ion energy spectrum diagnosis, and can effectively prevent radiation damage to the CMOS chip.

The invention discloses a neutron-gamma mixed radiation screening method based on a radiation response signal. The neutron-gamma mixed radiation screening method depends on a nano-coating CMOS sensor neutron measurement system. The neutron measurement system of the nano-coating CMOS sensor comprises a detector, the detector comprises a CMOS sensor; a LiF thin film is attached to the light-sensitive surface of the CMOS sensor; the method comprises the following steps that a part of neutrons enable the CMOS sensor to generate a radiation response signal A; the other part of neutrons and 6Li are subjected to nuclear reaction to generate alpha rays and tritium ions, so that the CMOS sensor respectively generates a radiation response signal B and a radiation response signal C; the gamma ray enables the CMOS sensor to generate a radiation response signal D; and according to the difference of the four radiation response signals in morphology and / or gray values, discriminating the neutron-gamma mixed radiation field. The detector formed by combining the LiF film and the CMOS sensor is used for discriminating a neutron-gamma mixed radiation field and can be used for monitoring nuclear leakage of a reactor.

The invention discloses smoke and fire identification equipment based on a double-filtering switcher and a flame identification method, and relates to the field of fire fighting. A CMOS (complementary metal oxide semiconductor); a network transmission system; a power supply module; the switchable double optical filter mechanism is switched between the infrared cut-off optical filter and the full-spectrum optical filter; an analysis model is arranged in the micro-processing system, and the micro-processing system is configured to control the infrared cut-off optical filter to cut into an optical path in a conventional state to obtain a visible light image for flame initial detection, and control the full-spectrum optical filter to cut into the optical path and reduce the CMOS sensitivity to obtain a full-spectrum image for flame confirmation. According to the invention, a switchable double-optical-filter mechanism is adopted for a single camera, and light is filtered through two switches, so that the flame recognition speed is improved while the cost is reduced, the CMOS sensitivity is adjusted, repeated de-duplication is carried out on an image, and image analysis and comparison data of comparison of a conventional scene and a flame scene by the camera are enriched and improved.

The present invention proposes a basic structural principle of a confocal imaging device based on completely equal optical path for adjacent surfaces. In the imaging optical paths of adjacent double surfaces, glass optical wedges are respectively used to implement a new detection device and method for spatial separation of double-sided imaging of semiconductor grains. This new device can obtain completely equal optical path confocal imaging detection for adjacent double surfaces of semiconductor grains simultaneously, and does not require the use of polarization optical elements and polarization CMOS sensors (cameras), effectively reducing the cost of the detection device.

A CMOS sensor (10) comprises an active substrate (100) and photodiodes (105). The photodiodes (105) are arranged on one side of a first main surface (102) of the active substrate (100). One terminal of the photodiodes (105) is electrically coupled via the active substrate (100) to a ground line (109), which is electrically coupled to a ground terminal (104), and the ground line (10) is located adjacent to a second main surface (103) of the active substrate (100).