Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

4954 results about "Camera module" patented technology

A camera module is an image sensor integrated with a lens, control electronics, and an interface like CSI, Ethernet or plain raw low-voltage differential signaling.

Image recognition system for defect detection of industrial parts

The invention discloses an image recognition system for industrial part defect detection, and particularly relates to the field of part defect detection, which comprises a multi-axis controllable light source array module, a high-speed polarization camera module, an edge computing node module, a double-branch semantic segmentation network module and a physical constraint post-processing module, according to the invention, through combination of time-sharing stroboscopic illumination and polarization image sequence acquisition, multi-dimensional perception of surface topography and material differences is realized; generating an elevation map and a normal map by using photometric stereo solution, constructing a differential rendering layer reverse matching CAD model, and extracting flash sensitive features; a double-branch U-Net network is adopted to fuse geometric and polarization characteristics, the characterization capability is enhanced through a trans-attention mechanism, and a pixel-level mask is output; and finally, mapping a two-dimensional result to a three-dimensional coordinate system by means of calibration parameters, carrying out geometric verification in combination with a tolerance zone and a height threshold value, and automatically generating a structured defect report containing position, size, grade and visual information.
Owner:BEIJING HUATAI HENGNUO TECHNOLOGY CO LTD

Optical lens, camera module and electronic device

The application relates to the technical field of optical lenses, and provides an optical lens, a camera module and electronic equipment, which can solve the problem that the camera module occupies a large space and causes the thickness of the electronic equipment to be large in related technologies. The optical lens comprises a front lens group, a first turning element, a first rear lens group and a second rear lens group; the front lens group comprises a first front lens group and a second front lens group; when the first turning element is located at a first position, the first turning element is located on the image side of the first front lens group and is used for reflecting the outgoing light beam of the first front lens group to the first rear lens group, and the optical lens has a first effective focal length; when the first turning element is located at a second position, the first turning element is located on the image side of the second front lens group and is used for reflecting the outgoing light beam of the second front lens group to the first rear lens group, and the optical lens has a second effective focal length F2, and the second effective focal length is greater than the first effective focal length F1. The application can be used on electronic equipment such as mobile phones.
Owner:HUAWEI TECH CO LTD

Reflection driving assembly, magnet assembling method therefor, reflection module and camera module

The present application belongs to the technical field of camera modules. Disclosed are a reflection driving assembly, a magnet assembling method therefor, a reflection module and a camera module. The reflection driving assembly comprises: a reflection base; a carrier, which is rotatably arranged on the reflection base and is adapted to carry a reflection element, the reflection element being able to reflect light rays in a direction parallel to a first axis to a direction parallel to a second axis; a reflection driving part, which comprises a second rotating magnet and a second rotating coil that are arranged opposite to each other so as to drive the carrier to rotate about a third axis with respect to the reflection base, the third axis being perpendicular to the first axis and the second axis; and a rotation position sensing part, which comprises a first sensing magnet and a first rotation sensing element that are adapted to measure the angle of rotation of the carrier about the third axis, the first sensing magnet and the second rotating magnet being arranged opposite to each other in a direction perpendicular to the third axis, and the first rotation sensing element being adapted to simultaneously sense magnetic fields of the first sensing magnet and the second rotating magnet. The present application can accurately sense the position of rotation of the carrier about the third axis, so as to implement closed-loop control.
Owner:NINGBO SUNNY OPOTECH CO LTD

Ultra-thin glass defect detection system and positioning method based on line scanning and phase deflection

The invention discloses an ultra-thin glass defect detection system and positioning method based on line scanning and phase deflection, and the system comprises a line scanning camera module, a distortionless phase deflection detection module, a high-magnification microscope module and a central processing unit. The line scanning camera module is used for collecting a 2D grayscale image of the ultrathin glass; the distortionless phase deflection technology detection module is used for collecting a surface height map of the ultra-thin glass; the high-magnification microscope module is used for carrying out depth positioning on the interlayer defect judged by the central processing unit; the central processing unit is used for receiving the 2D gray level image and the surface height map, executing an image registration and defect classification algorithm and sending a depth positioning control instruction to the high-magnification microscope module, a multi-module cooperative work detection system is constructed, the detection efficiency and the detection precision are both considered, and data support is provided for production process improvement.
Owner:FREESENSE IMAGE TECH

Body-equipped intelligent robot navigation system based on multi-modal large model

The invention discloses an intelligent robot navigation system with a body based on a multi-modal large model, and the system comprises an RGB-D camera module which captures a color image and a depth image of an environment in real time, and carries out the preprocessing of the color image and the depth image, and outputs the preprocessed image; the laser radar SLAM module provides a basis for subsequent coordinate calculation and navigation path planning; the multi-modal VLM module is used for calculating the three-dimensional coordinates of the target location in the map; and the navigation control module controls the robot to move. The beneficial effects of the invention lie in that the system realizes efficient environmental perception and natural language understanding through multi-modal fusion, and can accurately identify a target location, calculate a three-dimensional coordinate and plan a safe path, thereby improving the autonomous navigation precision and reliability of the robot, and being suitable for intelligent movement control in a complex scene.
Owner:LINKER

Psychological state assessment method and device

The invention discloses a psychological state assessment method and device. The method comprises the steps that firstly, based on a sensor group and a camera module, electrocardio information, face information, gait information and plantar pressure information of a target are obtained; then constructing an input feature vector based on the electrocardio information, the face information, the gait information and the plantar pressure information; and finally, inputting the input feature vector into a preset model to obtain an evaluation result. According to the embodiment of the invention, the multi-dimensional feature data can be processed, so that the psychological state is evaluated by using the multi-dimensional feature data to obtain the evaluation score, and the evaluation accuracy can be improved.
Owner:SHANXI YIKANG XINYUE MEDICAL INSTR CO LTD

Drowsy driving detection method and system thereof, and computer device

A drowsy driving detection method comprises: acquiring a side face image of a currently seated driver collected by a camera module; performing face recognition on the side face image to obtain side face feature parameters, and determining, according to the side face feature parameters, whether an ID file corresponding to the currently seated driver exists in a driver ID library; and if yes, periodically acquiring a side face image of the driver in the current period collected by the camera module, obtaining eye movement feature parameters of the driver in the current period according to the side face image of the current period, and determining whether the driver is driving while drowsy according to a comparison result between the eye movement feature parameters of the current period and the normal eye movement feature parameters of the driver.
Owner:GUANGZHOU AUTOMOBILE GROUP CO LTD

Camera module and electronic equipment

The embodiment of the invention provides a camera module and electronic equipment, relates to the technical field of camera shooting, and is used for reducing the size of a camera. The circuit board of the camera module can comprise a first part and a second part. The first part is arranged on the side where the first surface of the image sensor is located and covers the non-photosensitive area. The first portion is electrically connected with the image sensor. In addition, the second part is arranged around the periphery of the first part. The vertical projection of the second part on the plane where the first surface is located is not overlapped with the image sensor. In the direction perpendicular to the first surface, the first part can be overlapped with the image sensor so as to reduce the length of the camera module. The first portion is located between the lens assembly and the image sensor such that the thickness of the first portion of the circuit board can be multiplexed with the total length of the lens.
Owner:HUAWEI TECH CO LTD

Heating and pressure maintaining reverse top jigs

This invention discloses a heating and pressure-holding reverse-top fixture suitable for placing a mobile phone back panel. The mobile phone back panel has a downwardly protruding camera module. The invention includes a fixture base, a floating heating support for the camera module, and a lifting component A. The fixture base includes a heatable workpiece support plate, and the upper surface of the heatable workpiece support plate has a lifting port facing the camera module. The floating heating support for the camera module is located in the lifting port and fixed to the upper part of the lifting component A, so as to drive it to float up and down through the lifting component A. Effect: This application has a lifting component A to drive the floating heating support for the camera module to rise and fall. Compared with the traditional method of using only spring components, this application does not have the problem of the elastic force gradually decreasing, resulting in a smaller floating stroke. In other words, this application can control the lifting position of the floating heating support for the camera module more precisely, and can basically support the camera module in the preset position, so that it can be effectively heat-pressed and fixed to the smartphone back panel.
Owner:SHENZHEN SHIZONG AUTOMATION EQUIP CO LTD

Method and device for detecting residual stress of birefringent crystal

The invention discloses a method for detecting residual stress of a birefringent crystal, which is characterized by comprising the following steps of: fixing a sample to be detected on a sample loading table; the imaging lens is used for acquiring light rays which sequentially penetrate through the polarizer module, a sample to be detected on the sample loading table, the analyzer module and the camera module in four states in three states that polarization axes of the polarizer module and the analyzer module are mutually orthogonal and a polarization angle is gradually increased by 30 degrees, and in a state that the polarizer module and the analyzer module are in parallel, and the imaging lens is used for acquiring the light rays which sequentially penetrate through the polarizer module, the sample to be detected on the sample loading table, the analyzer module and the camera module in the four states; collecting a light intensity matrix set through a camera module; acquiring a reference light intensity matrix through normalized linear superposition, and performing pixel-by-pixel operation with the reference light intensity matrix on the basis of the first light intensity matrix, the second light intensity matrix and the third light intensity matrix to acquire corresponding phase delay matrixes; eliminating natural birefringence and updating a phase delay matrix by deducting respective overall average phase delay amount pixel by pixel; through pixel-by-pixel weighted stacking, isogradient lines are eliminated, and distribution information of residual stress is obtained.
Owner:SUZHOU WEIXIN SEMICONDUCTOR TECHNOLOGY CO LTD

Image processors, processing methods, storage media, and mixed reality display systems

This invention provides an image processor, a processing method, a storage medium, and a mixed reality display system. The image processor includes: a first color management module, whose input is connected to a rendering module, for acquiring virtual layer data from the rendering module and performing first color processing on it; a second color management module, whose input is connected to a camera module, for acquiring real-world layer data from the camera module and performing second color processing on it; a layer blending module, whose inputs are respectively connected to the first and second color management modules, for performing layer blending processing on the color-processed virtual layer data and real-world layer data to determine mixed image data; and a third color management module, whose input is connected to the layer blending module, for acquiring mixed image data from the layer blending module, performing third color processing on it, and outputting the third-color-processed mixed image data to a mixed reality display.
Owner:GRAVITYXR ELECTRONICS & TECH CO LTD

An Image Sensor System, a Camera Module, an Electronic Device and a Method for Operating a Camera Module for Detecting Events using Infrared

An image sensor system (200) sensitive to electromagnetic irradiation and comprising: a first pixel area (210) comprising an array of synchronous first image sensor pixels (211); and an infrared pixel arca (240) comprising infrared image sensor pixels (241, 242) sensitive to infrared irradiation; and a change detector area (230) comprising multiple asynchronous change detectors (231, 232), and a synchronous intensity read-out circuitry (260). A first electromagnetic receptor (215) of a respective first image sensor pixel (211) is electrically coupled to the synchronous intensity read-out circuitry (260). An infrared detector (245) of a respective infrared image sensor pixel (241, 242) is electrically coupled to a respective first asynchronous change detector (231) out of the multiple asynchronous change detectors (231, 232). The change detector area (230) is a distinct part of the image sensor system (200) which is separate from the pixel areas (210, 240).
Owner:TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Periscopic camera module

The invention relates to the technical field of optical imaging, and discloses a periscopic camera module which comprises a base internally provided with an installation cavity, an anti-shake motor installed on the base, a lens installed on the anti-shake motor and facing the installation cavity, an imaging assembly installed on the base and a steering optical element. The base is provided with a movable part capable of moving relative to the lens, the movable part is fixed through a locking part, and the steering optical element is installed on the movable part. According to the steering optical element, the movable part and the locking part are movably arranged on the base, so that the position of the movable part can still be adjusted after the lens, the anti-shake motor and the like are installed, the light reflection effect of the steering optical element can be optimal through adjustment, then the movable part is fixed through the locking part, and sealing in the installation cavity is guaranteed; therefore, the imaging quality is improved and the influence caused by errors is reduced.
Owner:SHINE OPTICS TECH CO LTD

Vehicle-mounted camera imaging quality testing method and device suitable for rain and fog scene

The invention relates to the field of automobile electronic testing technology and equipment, and discloses a vehicle-mounted camera imaging quality testing method and device suitable for a rain and fog scene, and the method comprises the steps: installing a to-be-tested camera module in a rain and fog environment cabin, setting the spectrum and illumination of a top natural illumination simulation system, and simulating the illumination at different time periods; selecting a test target plate in the darkroom; starting an automatic centering module to align the optical axis with the standard plate reference; rain and fog parameters are set through the environment control host, the rain and fog supply system is started to simulate different levels of rain and fog environments, and the raindrop particle size, concentration, dripping speed, fog visibility and fogdrop particle size are dynamically regulated and controlled; shooting a target plate graph card, extracting characteristic parameters by an image analysis module, performing quantitative analysis, and generating an evaluation report, so as to solve the technical problem of singleness of rain and fog scene environment simulation in the prior art.
Owner:CHINA AUTOMOTIVE ENG RES INST +1

Vehicle-mounted road defect detection system and method based on binocular vision and deep fusion

The invention relates to a vehicle-mounted road defect detection system and method based on binocular vision and deep fusion, and the system comprises a binocular camera module, a main control platform, a positioning module, a communication module and a power supply control module. The system realizes automatic detection and severity quantitative evaluation of various pavement defects such as cracks, pits and ruts, obtains defect positions in combination with a positioning module, and uploads the defect positions to a cloud platform in real time through a communication module, thereby forming a closed-loop urban road defect information perception and management system. According to the method, the quantitative evaluation capability of the identification accuracy and severity of the road defects is remarkably improved, and automatic identification, accurate positioning and real-time cloud synchronous uploading of the road defects are realized; the method has the advantages of flexible deployment, efficient operation, high adaptability and the like, is particularly suitable for urban road intelligent inspection and maintenance management scenes, and has good engineering application prospects and popularization values.
Owner:DANMO INTELLIGENT TECH (HANGZHOU) CO LTD +1

Unmanned aerial vehicle multimode sensing fusion positioning method and system

The invention relates to an unmanned aerial vehicle multi-mode sensing fusion positioning method and system, and relates to the technical field of unmanned aerial vehicle navigation and positioning, and the method comprises the following steps: S1, deploying a high-resolution camera module and an optical communication receiving module on an unmanned aerial vehicle, and arranging an intelligent aviation obstruction beacon equipped with an optical communication transmitting module in a flight environment; s2, after the unmanned aerial vehicle is started, capturing an environment image containing feature information of the intelligent aviation obstruction beacon in real time through the camera; and S3, obtaining a coding positioning reference signal sent by the intelligent aviation obstruction beacon through an optical communication receiving module. By combining the high-resolution camera module, the optical communication receiving module and the inertial navigation module, efficient cooperative processing of multi-source heterogeneous data is achieved, the positioning precision and reliability of the unmanned aerial vehicle in a complex environment are remarkably improved, the AI model algorithm is used for synchronously analyzing the environment image and the optical communication signal, and the positioning precision and reliability of the unmanned aerial vehicle are improved. The limitation of single sensor positioning is effectively solved.
Owner:深圳安航科技有限公司

Aperture driving motor, camera module and electronic equipment

The invention provides an aperture driving motor, a camera module and electronic equipment. The aperture driving motor comprises a base assembly which is provided with an accommodating space; at least one part of the rotating carrier is movably arranged in the accommodating space, the rotating carrier is provided with an accommodating cavity, one end, close to the bottom surface of the base assembly, of the rotating carrier is provided with a mounting opening, the rotating carrier is further provided with an aperture opening and a plurality of sliding grooves, and the sliding grooves are formed in the circumferential direction of the aperture opening at intervals; the blade assembly is movably arranged in the containing cavity, the blade assembly comprises a plurality of blade bodies, mounting protrusions are arranged at the two ends of each blade body respectively, one mounting protrusion is rotationally connected with the base assembly, and the other mounting protrusion extends into the sliding groove and can move along the sliding groove; and the driving assembly is arranged in the circumferential direction of the rotating carrier. The problem that in the prior art, the aperture adjusting range of a camera device is small is solved.
Owner:SHANGHAI BILLU ELECTRONICS CO LTD

Carrier of camera module, manufacturing method and camera module

The invention discloses a carrier of a camera module, a manufacturing method and the camera module, the carrier of the camera module comprises a main body, the main body comprises a plurality of side parts, each side part is arranged around the optical axis of the camera module, a corner part is formed at the joint of two adjacent side parts, and the main body is subjected to first injection molding and has first rigidity; the insert is wrapped on the main body, and the insert is made of a metal material; the buffering part is formed at the corner part through secondary injection molding, the buffering part comprises a buffering section, the buffering section protrudes out of the surface of the main body in the movement direction of the carrier, the buffering part has second rigidity, and the second rigidity is smaller than the first rigidity. Through the first injection molding and the second injection molding, high integration of the main body, the insert and the buffer part can be realized, in other words, the integration of the carrier can be improved, the overall size of the carrier is effectively reduced, meanwhile, the supply chain and the assembly process of the carrier are simplified, the production efficiency of the carrier and the camera module is improved, and the manufacturing cost is reduced.
Owner:NINGBO SUNNY OPOTECH CO LTD

An edge device-based media streaming method, device and electronic device

The application discloses a media stream transmission method and device based on an edge device and electronic equipment, and the method comprises the following steps: an edge all-in-one machine receives a live broadcast request message sent by a site device management cloud module from a first network, the edge all-in-one machine is connected to a second network, the edge all-in-one machine generates media stream service information according to a camera module identifier, and the media stream service information is sent to the site device management cloud module, so that the site device management cloud module requests a target network video recorder corresponding to the camera module identifier to acquire a media stream according to an edge live broadcast address, an IP address and a port; when the target network video recorder feeds back a successful request, the edge all-in-one machine receives the media stream recorded by the target network video recorder through the camera module, and transmits the media stream to a client according to the edge live broadcast address. According to the method, the media stream data is transmitted through the second network LAN, public network bandwidth resources are saved, and the stability and fluency of video playing are improved.
Owner:SHANGHAI GEWU ZHIYUAN NETWORK TECH CO LTD

Linkage calling pass checking method of clearance camera and gate equipment

The invention discloses a linkage calling passing inspection method of a customs clearance camera, which is used for controlling calling of a first camera and a plurality of second cameras, the first camera is used for shooting an image of a pedestrian at a first visual angle, and the second cameras are used for shooting an image of the pedestrian at a second visual angle; the method comprises the following steps: a first camera tracks and records a plurality of first view angle images when a pedestrian approaches a gate; forming a pedestrian prediction track in a preset detection area of the first camera according to the first view angle images at the multiple different moments, and calling at least one second camera on the pedestrian prediction track; a second camera obtains a second visual angle image of the pedestrian and recognizes the second visual angle image and preset face information, and if recognition succeeds, a preset gate is controlled to be opened; and if the identification is wrong, closing the gate, and collecting the biological information of the pedestrian for verification. According to the linkage calling passing checking method, the calling efficiency of the camera module is effectively improved, and the passing efficiency of pedestrians is improved.
Owner:SHENZHEN HUAZHENGLIAN INDAL +2

Method for searching rotor stroke center position and camera module assembly equipment

The invention discloses a method for searching the stroke center position of a rotor and camera module assembly equipment, which are applied to camera module assembly and comprise the following steps: S1, electrifying a motor, and adjusting the gain coefficient of an anti-shake part of the motor to keep the rotor of the motor stable in a no-load state; s2, the rotor is controlled to move to limit positions in the first direction and the second direction, magnetic potential values corresponding to the limit positions are obtained, and a target magnetic potential value corresponding to the stroke center position of the rotor is calculated based on the magnetic potential values of the limit positions; and S3, controlling the mover to move to a position corresponding to the target magnetic potential value, and completing repositioning of the stroke center position, so that gaps between the mover and the lens are uniformly distributed. According to the invention, the stroke center position of the motor rotor is dynamically fitted in real time.
Owner:NINGBO SUNNY OPOTECH CO LTD

Aviation transient electromagnetic pod coil attitude correction method and system

The invention discloses an aviation transient electromagnetic pod coil attitude correction method and system, and belongs to the field of aviation geophysical exploration, and the system comprises a surface scanning industrial camera module which is used for obtaining the image information of a suspension coil in real time; the industrial-grade integrated navigation module is used for outputting inertial navigation data; the time synchronization and data acquisition module is used for establishing a time unification mechanism; the visual processing module is used for extracting the image processed by the time unification mechanism to obtain visual features; the inertial navigation resolving module is used for obtaining an inertial navigation state of a coil attitude angle through angular velocity integration; the data fusion and attitude estimation module is used for performing fusion calculation by combining the visual features and the inertial navigation state to obtain a fusion result; and the projection area and magnetic moment calculation module is used for calculating the ground projection area and the effective emission magnetic moment component of the coil according to the fusion result. According to the method, the system complexity and the electromagnetic interference risk caused by multi-inertial navigation layout are reduced, and the detection precision and stability of the aviation transient electromagnetic data are improved.
Owner:INSTITUTE OF GEOLOGY AND GEOPHYSICS CHINESE ACADEMY OF SCIENCES

Full-glass vehicle-mounted day and night confocal optical system and camera module applied by same

The utility model provides an all-glass vehicle-mounted day and night confocal optical system and a camera module applying the same, mainly comprising eight lenses, the first lens has negative focal power, the object side surface is a convex surface, and the image side surface is a concave surface, the second lens has negative focal power, the object side surface is a concave surface, and the image side surface is a convex surface. The third lens has positive focal power, the object side surface is a convex surface, the image side surface is a concave surface, the fourth lens has negative focal power, the object side surface is a convex surface, the image side surface is a concave surface, the fifth lens has positive focal power, the object side surface is a convex surface, the image side surface is a convex surface, and the fourth lens and the fifth lens form a bonding lens. The sixth lens has positive focal power, the object side face of the sixth lens is a convex face, the image side face of the sixth lens is a convex face, the seventh lens has negative focal power, the image side face of the seventh lens is a concave face, the eighth lens has focal power, and the image side face of the eighth lens is a concave face. And the picture illumination uniformity and the imaging definition are improved.
Owner:GUANGDONG HONGJING OPTOELECTRONICS TECHONLOGY CO LTD

Pan-tilt camera, pan-tilt camera anti-shake control method and pan-tilt camera anti-shake control device

The invention discloses a pan-tilt camera and an anti-shake control method and device for the pan-tilt camera. The method comprises the following steps: acquiring first shake data acquired by a first inertial measurement unit arranged on a pan-tilt mechanism of the pan-tilt camera and second shake data acquired by a second inertial measurement unit arranged on a handle part of the pan-tilt camera; according to the first jitter data, the second jitter data, a first frequency response characteristic of the holder mechanism and a second frequency response characteristic of the optical anti-jitter camera module, generating a first anti-jitter compensation amount corresponding to the holder mechanism and a second anti-jitter compensation amount corresponding to the optical anti-jitter camera module; generating a rotation control parameter of each motor of the holder mechanism according to the first anti-shake compensation amount; generating a translation control parameter of each motor of the optical anti-shake camera module according to the second anti-shake compensation amount; and controlling each motor of the holder mechanism to execute rotation motion compensation according to the rotation control parameter, and controlling each motor of the optical anti-shake camera module to execute translation motion compensation according to the translation control parameter.
Owner:VIVO MOBILE COMM CO LTD

Large-aperture small-size optical imaging system and camera module applied by same

The utility model provides a large-aperture small-volume optical imaging system and a camera module applying the same, which are composed of eight lenses, the first lens has positive focal power, the object side surface is a convex surface, the image side surface is a convex surface, the second lens has negative focal power, the object side surface is a convex surface, the image side surface is a concave surface, the third lens has positive focal power, the image side surface is a convex surface, and the fourth lens has negative focal power. The fourth lens has positive focal power, the object side surface is a concave surface, and the image side surface is a convex surface; the fifth lens has negative focal power, the object side surface is a concave surface; the sixth lens has positive focal power, the object side surface is a convex surface; the seventh lens has positive focal power, the object side surface is a convex surface, and the image side surface is a concave surface; according to the optical lens, aberration can be effectively corrected, so that the optical lens has better imaging quality, larger aperture size, smaller volume and better thermal stability, and the overall imaging quality is improved.
Owner:HONGJING OPTOELECTRONICS (XIANTAO) TECH CO LTD

Edge computing device-oriented low-cost full-dial image acquisition and identification method

The invention relates to the technical field of image processing and intelligent instruments, in particular to an edge computing equipment-oriented low-cost full-dial image acquisition and recognition method, which comprises the following steps of: acquiring a dial image through a camera module arranged in a water meter, and performing preliminary puzzle and image compression processing through a data processing module; sending the compressed dial image to an edge computing device; the edge computing device performs water meter puzzle processing on the compressed dial plate image; carrying out region segmentation on the dial plate image after the jigsaw processing to obtain a character wheel frame and a pointer; character wheel recognition and pointer recognition are carried out on the character wheel frame and the pointer respectively; the recognition result of the character wheel and the pointer forms a final water meter reading; and the water meter reading and the compressed dial plate image are output to the cloud server. According to the invention, the quality of the full-dial image and the data processing efficiency are improved, the delay of data transmission is reduced, and the cost is reduced.
Owner:JIANGSU UNIV OF SCI & TECH

Multi-channel multi-color-temperature intelligent light source system for consistency calibration of camera module and optimization method

The invention discloses a multi-channel multi-color-temperature intelligent light source system for consistency calibration of a camera module and an optimization method, and the calibration system generates PWM signals through an STM32F103ZET6 main control unit of a light source controller to control the light output of each group of cold and warm LEDs so as to provide a stable and adjustable illumination environment; measuring reference brightness and chromaticity parameters of cold light and warm light of each group of LEDs, setting a target brightness value and a color temperature value, and converting the target brightness value and the color temperature value into target chromaticity coordinates; the initial PWM duty ratio of the cold and warm light LED is calculated, a piecewise polynomial nonlinear compensation algorithm is adopted to correct the duty ratio, and the LED is driven to output mixed light meeting the target brightness and color temperature; collecting a large amount of brightness and color temperature data by cyclically and gradually adjusting the duty ratio, and generating an error thermodynamic diagram; and the compensation model coefficient is optimized and updated according to error analysis, so that the light source output keeps high-precision consistency in a full range. Compared with the prior art, the method has the advantages that the brightness and color temperature consistency of the light source can be automatically calibrated and continuously optimized, the accuracy and stability of OTP burning calibration of the camera module are greatly improved, and the production test efficiency and the product imaging quality are improved.
Owner:WUHAN TEXTILE UNIV

Medical endoscope with extinction anti-pollution structure

The invention discloses a medical endoscope with an extinction anti-pollution structure, and relates to the technical field of endoscopes, the medical endoscope comprises an endoscope main body, the front end of the endoscope main body is provided with a camera module, and the periphery of the camera module is provided with an illumination light source for illumination, an outer sleeve and an extinction structural member; a hollow observation opening is formed in the center of the endoscope body in a penetrating mode, a light blocking sinking table used for blocking front direct light beams emitted by the illumination light source is arranged outside the hollow observation opening in a surrounding mode, and a deflection bevel edge used for diffraction deflection of light rays emitted by the illumination light source is further arranged outside the light blocking sinking table. Through the synergistic effect of physical shielding of the light blocking sinking table and diffraction deflection of the deflection bevel edge, front-side direct stray light of the illumination light source is cut off from the source, side-emitting and oblique-emitting light rays are deflected in a targeted mode, light spot and light fog pollution caused by diffuse reflection of the front end of a transparent guide sheath or a catheter is remarkably eliminated, and the imaging definition is remarkably improved.
Owner:XINJINGJIE (XIANGTAN) MEDICAL TECH CO LTD