453results about How to "Improve image quality" patented technology

The invention discloses an internal combustion engine in-cylinder transient self-adaptive exposure control method based on FPGA acceleration, and belongs to the technical field of internal combustion engine endoscopic visualization. In order to solve the technical problem of image overexposure or underexposure caused by violent illumination change in the combustion process in an internal combustion engine cylinder, a real-time exposure detection unit is fused with a camera built-in sensor and an endoscope added sensor to monitor light intensity data; the adaptive exposure control unit accelerated by the FPGA adopts adaptive PID control and fuzzy logic control to generate a parameter adjustment direction, the adaptive PID dynamically adjusts gain based on a machine learning model, and the fuzzy logic outputs a decision according to a fuzzy rule base of brightness, light intensity and errors; the parameter adjusting unit adjusts the aperture size, the shutter speed and the light sensitivity in a linkage mode according to the target and actual gray scale difference value, and millisecond-level multi-parameter exposure control is achieved. Overexposure of a highlight area and loss of details of a low-light area are effectively avoided, and stable and clear images are obtained in the whole combustion process.

The invention relates to a light and miniature big-target-surface low-light lens, and the lens comprises a front lens group A, a diaphragm B and a rear lens group C, wherein the front lens group A, the diaphragm B and the rear lens group C are sequentially arranged in an incident direction of an optical path. The front lens group A includes a positive meniscus lens A1, a negative meniscus lens A2,a biconcave lens A3 and a biconvex lens A4, wherein the positive meniscus lens A1, the negative meniscus lens A2, the biconcave lens A3 and the biconvex lens A4 are sequentially arranged in an incident direction of the optical path. The biconcave lens A3 and the biconvex lens A4 are in close connection with each other as a first bonding group. The rear lens group C includes a biconcave lens C1, abiconvex lens C2, a biconvex lens C3, a plano-convex lens C4 and a negative meniscus lens C5, wherein the biconcave lens C1, the biconvex lens C2, the biconvex lens C3, the plano-convex lens C4 and the negative meniscus lens C5 are sequentially arranged in an incident direction of the optical path. The biconcave lens C1 and the biconvex lens C2 are in close connection with each other as a secondbonding group. The invention also relates to an imaging method of the lens. The lens is reasonable in design, effectively improves the imaging quality under the requirement of the large target surfaceof the lens, reduces the number of optical lenses, and realizes light and miniature lens. The lens has strong light collecting and light transmitting ability, and the target surface of the lens is large. The lens is high in optical resolution, is large in angle of view, and is large in observable range.

The invention provides a rainfall monitoring method and system based on unmanned aerial vehicle multi-mode noise reduction in the technical field of environment monitoring and unmanned aerial vehicle application, and the method comprises the steps: S1, collecting a visible light image and a long-wave infrared image through a multispectral vision module after an unmanned aerial vehicle takes off, and collecting a rainfall audio from an acoustic cabin through a microphone; s2, carrying out noise reduction processing on the visible light image, the long-wave infrared image and the rainfall audio; s3, extracting a raindrop size distribution histogram and a spatial density thermodynamic diagram based on the visible light image and the long-wave infrared image, and extracting acoustic MFCC features based on rainfall audio; s4, performing feature fusion operation based on the raindrop size distribution histogram, the visual density thermodynamic diagram and the acoustic MFCC features to obtain rainfall intensity; and S5, carrying out cumulant dynamic compensation based on the rainfall intensity to obtain the cumulative rainfall. The rainfall monitoring method has the advantages that the precision, robustness and practical level of rainfall monitoring are greatly improved.

The invention provides a target tracking compensation control method and system for a surgical robot in a dynamic breathing environment, and the method comprises the steps: collecting an ultrasonic image of a patient in real time, and carrying out the self-adaptive admittance control algorithm based on force feedback; force control output is adjusted in a self-adaptive mode according to the contact force between the ultrasonic probe and the skin surface and the change of the displacement and speed state of the ultrasonic probe, rigidity parameters of an admittance control model are adjusted in real time, constant contact force between the ultrasonic probe and the skin surface is kept, and it is ensured that the ultrasonic probe and the body surface keep stable contact force and meanwhile adapt to the dynamic change of the body surface; a focus is continuously identified and positioned by utilizing a real-time ultrasonic image through template matching and a dynamic template updating algorithm, real-time position information of an internal focus target spot is obtained and serves as a target pose, the motion compensation amount of a puncture mechanical arm is calculated, the track of a puncture needle point and the motion of the target spot are kept synchronous, and the target pose is accurately positioned. And target tracking and compensation control in a dynamic breathing environment are realized. Target tracking compensation control of the surgical robot can be carried out.

The invention discloses a zoom lens with a telescopic structure and a zoom method, and belongs to the technical field of lenses, the zoom lens comprises a fixed barrel, a zoom hand wheel arranged outside the fixed barrel, a front group lens barrel, a power barrel, a zoom group lens barrel and a compensation group lens barrel, the front group lens barrel, the zoom group lens barrel and the compensation group lens barrel are arranged inside the fixed barrel, and the front group lens barrel, the zoom group lens barrel and the compensation group lens barrel are sequentially arranged along the optical axis direction; the front group lens cone is provided with a bulge, the fixed cylinder is provided with a straight groove, and the bulge of the front group lens cone is limited in the straight groove of the fixed cylinder, so that the front group lens cone does linear motion along the optical axis direction. According to the invention, an optical structure adopting four lenses, namely the front group, the zooming group, the compensation group and the focusing group, is provided, the number of the optical structure is smaller than that of a traditional structure with five lenses, through a unique telescopic mechanical structure, the lens is in a storage state when not used, the lenses are close to one another, the size is minimum, and the portability is greatly improved.

The application provides an optical camera lens, comprising a lens barrel, a first lens to a sixth lens, a first spacing element located on the image side of the first lens and in contact with the image side surface of the first lens, a second spacing element located on the image side of the second lens and in contact with the image side surface of the second lens, a third spacing element located on the image side of the third lens and in contact with the image side surface of the third lens, a fourth spacing element located on the image side of the fourth lens and in contact with the image side surface of the fourth lens, and a fifth spacing element located on the image side of the fifth lens and in contact with the image side surface of the fifth lens; the maximum field angle of the optical camera lens is greater than 110 degrees; the outer diameter D5s of the object side surface of the fifth spacing element, the inner diameter d5s of the object side surface of the fifth spacing element, the effective focal length f of the optical camera lens, and the maximum field angle FOV of the optical camera lens satisfy the following relationship: (D5s+d5s) / [f*tan(FOV / 2)]<2.0. The application solves the problem of poor edge imaging quality of the optical camera lens in the prior art.

The application provides an optical system, comprising: a lens barrel, an inner wall surface of the lens barrel is stepped along an extension direction of an optical axis of the optical system, and a distance from the inner wall surface of the lens barrel to the optical axis gradually increases from an object side to an image side of the optical system; first to fifth lenses sequentially accommodated in the lens barrel from the object side to the image side of the optical system, the fifth lens having a negative focal power; and at least five abutting members, wherein a fourth abutting member is in contact with an image side surface part of the fourth lens, and a fifth abutting member is in contact with an image side surface part of the fifth lens; wherein the effective focal length f5 of the fifth lens, the maximum thickness CP4 of the fourth abutting member, the distance EP45 from the image side surface of the fourth abutting member to the object side surface of the fifth abutting member along the optical axis, and the central thickness CT5 of the fifth lens satisfy: -40 < f5 / (CP4+EP45-CT5) < -5.0. The application solves the problem that high image quality and high stability are difficult to be considered in the prior art.

The application belongs to the technical field of radar signal processing and imaging, and provides a differential coupling single-frequency time-varying low-quantization imaging method, which comprises receiving a SAR echo signal, constructing a single-frequency time-varying threshold signal, single-bit quantization processing of a reference channel, single-bit quantization processing of a phase shift channel, double-channel data fusion and harmonic cancellation, and imaging processing based on a synthesized signal. The application effectively reduces the quantization noise base and improves the detection capability of a SAR system on weak targets under the premise of not significantly increasing the hardware cost.

This invention provides a full-foot 3D scanner, comprising a housing, a motion module, and a scanning module. The housing has two scanning areas arranged opposite each other in a first horizontal direction and a support area disposed between the two scanning areas, the support area being used to place the full foot. The motion module is disposed within the housing and includes a sliding part slidably disposed along a second horizontal direction. The scanning module includes a first frame, a second frame, lasers, and a camera. The first and second frames are respectively disposed corresponding to the two scanning areas. The first frame has at least two lasers spaced apart in the vertical direction, with the two lasers positioned on opposite sides of the support area in the vertical direction. The second frame also has at least two lasers spaced apart in the vertical direction, with the two lasers positioned on opposite sides of the support area in the vertical direction. The camera is disposed corresponding to the lasers, and both the lasers and the camera are oriented towards the support area. This solution provides a full-foot 3D scanner that balances motion accuracy, imaging quality, and structural compactness.

The application discloses a video instantaneous heart rate detection method based on time-frequency spectrum conversion and an image enhancement network, and comprises the following steps: 1, selecting a face region of interest from a video to obtain a target BVP time sequence; 2, converting the target BVP time sequence into an original time-frequency spectrum through time-frequency spectrum conversion; 3, establishing an image enhancement network to enhance the original time-frequency spectrum and obtain an enhanced time-frequency spectrum; 4, training the image enhancement network; and 5, extracting an instantaneous heart rate value from the enhanced time-frequency spectrum. The application combines time-frequency spectrum conversion and the image enhancement network, extracts a time-frequency spectrum containing instantaneous heart rate information from a face video, can improve the accuracy of instantaneous heart rate detection, and thus provides a new method for non-contact instantaneous heart rate detection based on a video.

A display device and an electronic device including the same are disclosed. The display device includes: a display panel including sub-pixels connected to first sub-gate lines and second sub-gate lines; a gate driver configured to supply a first sub-gate signal to the sub-pixel through the first sub-gate line and a second sub-gate signal to the sub-pixel through the second sub-gate line during a display scan period; and a voltage generator configured to supply an offset signal to the first sub-gate line during a self-scanning period in which the supply of the second sub-gate signal is stopped.

The application discloses an image processing method and device, electronic equipment and storage medium, and belongs to the technical field of image processing. The method comprises the following steps: performing layered processing on a to-be-processed image to obtain a base layer image and a detail layer image corresponding to the to-be-processed image; performing contrast enhancement processing on the base layer image to obtain a base layer enhanced image; determining a target scene parameter corresponding to the to-be-processed image based on feature information of the base layer enhanced image; performing enhancement processing on the detail layer image based on the target scene parameter to obtain a detail layer enhanced image; and obtaining a target image based on the base layer enhanced image, the detail layer enhanced image and the target scene parameter. The method can adapt to an image scene, perform enhancement processing on the image, effectively improve the image quality and improve the visual perception of the human eye.

This invention provides an optical lens comprising eight lenses, arranged sequentially along the optical axis from the object side to the image plane: a first lens with negative optical power, its object side being convex and its image side being concave; a second lens with positive optical power, its object side being concave and its image side being convex; a third lens with negative optical power, its object side being convex and its image side being concave; a fourth lens with positive optical power, its object side being concave and its image side being convex; a fifth lens with positive optical power, both its object side and image side being convex; a sixth lens with positive optical power, both its object side and image side being convex; a seventh lens with negative optical power, both its object side and image side being concave; and an eighth lens with positive optical power, both its object side and image side being convex. The optical lens provided by this invention can improve the imaging quality of an optical lens, reduce aberrations, and enhance the overall image quality.

The application provides a panoramic system brightness adjusting method, which comprises the following steps: acquiring images of each camera; determining overlapping areas of the images of each camera; selecting a first image as a reference image of a panoramic image and a second image as a to-be-stitched image in the overlapping areas; acquiring an initial homography matrix between the reference image and the to-be-stitched image; correcting the initial homography matrix to obtain an optimized homography matrix; stitching the reference image and the to-be-stitched image through a bilinear interpolation algorithm according to the optimized homography matrix to obtain a panoramic stitched image; and judging whether the brightness uniformity of the panoramic stitched image meets a preset value; if yes, the panoramic image stitching is completed; otherwise, the brightness of the panoramic stitched image is adjusted. The application realizes the brightness uniformity of the panoramic stitched image and improves the imaging quality.

The invention discloses a zoom lens. The zoom lens comprises a focusing lens group with negative focal power, a zoom lens group with positive focal power and a fixed lens group with negative focal power which are sequentially arranged from an object plane to an image plane along an optical axis; the fixed lens group is fixedly arranged, and the focusing lens group and the zoom lens group are movably arranged along an optical axis; the focusing lens group comprises a convex-concave first lens with negative focal power, a biconcave second lens with negative focal power and a convex-concave third lens with positive focal power; the zoom lens group comprises a biconvex fourth lens with positive focal power, a convex-concave fifth lens with positive focal power, a convex-concave sixth lens with negative focal power, a convex-concave / plano-concave seventh lens with positive focal power, a convex-concave eighth lens with negative focal power and a convex-concave ninth lens with positive focal power; the fixed lens group includes a concave-convex tenth lens having a negative refractive power. By the adoption of the technical scheme, the zoom lens has the advantages of being small in size, large in aperture, high in image quality and the like.

The application discloses a marine organism image processing method and device, electronic equipment and a readable storage medium, and is applied to the technical field of digital image processing. The method comprises the following steps: performing step-by-step down-sampling on a to-be-processed optical image by using a convolution module with different convolution kernels, so as to obtain a plurality of initial images with different scales. Global feature extraction is performed on each initial image under different scales, so as to obtain a plurality of multi-level feature maps; the multi-level feature maps are input into a Transformer encoder, and multi-level detail feature extraction is performed on the multi-level feature maps by adopting a multi-level feature deepening extraction fusion mode. The output features of the Transformer decoder and the multi-level detail features are up-sampled, so as to obtain an enhanced optical image. The application can solve the problem that the underwater image degradation phenomenon is serious or the details are blurred, and effectively improve the image enhancement effect of the marine organism image.

Disclosed are a pixel circuit and a display device including the same. The pixel circuit of the display device includes a first switching element including a first electrode to which an initialization voltage is applied, a gate electrode to which an initialization pulse is applied, and a second electrode connected to a second node; a second switching element including a first electrode connected to a third node or a fourth node, a gate electrode to which a sensing pulse is applied, and a second electrode to which a reference voltage is applied; a third switching element including a first electrode to which a data voltage is applied, a gate electrode to which a scan pulse is applied, and a second electrode connected to the second node; and a fourth switching element including a first electrode connected to the third node, a gate electrode to which a first light emission control pulse is applied, and a second electrode connected to the fourth node.

The utility model discloses a kind of photosensitive chip packaging structures, including circuit board, fixed filling adhesive layer, CIS photosensitive chip, support adhesive layer, wrapping filling adhesive layer, optical filter and multiple pads.CIS photosensitive chip is fixed on the top of circuit board by fixed filling adhesive layer, and the photosensitive area is jointly constituted by the support adhesive layer of setting in its outer edge and the top optical filter Sealing chip inner cavity;Photosensitive chip and circuit board are connected by multiple gold wires, and are packaged by wrapping filling adhesive layer to prevent gold wire exposure, improve structural stability.The utility model structure is packaged by optimization, effectively prevent gold wire fracture, and by reducing chip inner cavity volume, reduce the risk of fogging caused by air thermal expansion, to improve the stability and imaging reliability of photosensitive chip, applicable to the image acquisition equipment of higher imaging quality requirement.

The invention discloses a method and a device based on Interlanceamp. The invention discloses an infrared detector driving imaging method in a Binning mode. According to the method, a pair of complete image data is generated, a detector needs to carry out integration operation twice, and effective data of different subframes can be generated after each time of integration is completed. Effective data generated by the first integration is a first sub-frame, and the sub-frame is all even-numbered lines of the complete image. Effective data generated after the second integration time is completed are second subframes, and the subframes are all odd-numbered lines of the complete image. According to the method, image data of a first sub-frame and image data of a second sub-frame output by an infrared detector are cached respectively, odd-even row sorting, time sequence recombination processing and the like are carried out on cached effective image data of the first sub-frame and the second sub-frame, and finally a complete image with the size of 640 * 512 is obtained. And the image is finally output through an image format of a camera link interface protocol.

The embodiment of the invention provides an optical lens, a camera module and electronic equipment, the optical lens comprises a first lens group, a second lens group and a third lens group, the first lens group, the second lens group and the third lens group are sequentially arranged from the object side to the image side of the optical lens, the first lens group and the second lens group both have positive focal power, and the third lens group has negative focal power. The third lens group has negative focal power; the first lens group, the second lens group and the third lens group are used for moving along the optical axis of the optical lens and enabling the optical lens to realize zooming, and the first lens group and the third lens group move towards the object side in the process that the optical lens is converted from a first working state to a second working state; the second lens group is used for moving towards the object side along the optical axis after the optical lens completes zooming so as to enable the optical lens to achieve focusing. According to the scheme, the total optical length of the optical lens can be reduced.

The application discloses a kind of thermosensitive microcapsule dispersions and its preparation method and application, it is related to microcapsule technical field.The application provides a kind of thermosensitive microcapsule dispersion, the thermosensitive microcapsule dispersion D90≤0.75 μm, thermosensitive microcapsule dispersion D100≤1.35 μm;The thermosensitive microcapsule dispersion includes thermosensitive microcapsule, the thermosensitive microcapsule includes capsule wall and capsule core, the weight percentage of the capsule wall and capsule core is (45-66) :(34-55);The capsule wall is polyurethane-polyurea compound, and the capsule core is chromogenic dye precursor and solvent.The application innovatively generates polyurethane-polyurea compound capsule wall by twice polymerization reaction, by capsule wall material polyisocyanate and polyether polyhydric alcohol primary polymerization reaction, polyisocyanate and polyamine secondary polymerization reaction, by the effective regulation of product species and generation amount, effectively control the temperature sensitivity of thermosensitive microcapsule, color range.

The application relates to the technical field of image sensors, and provides an image sensor and a manufacturing method.The image sensor comprises a semiconductor substrate, a plurality of pixel regions, a metal interconnection layer and a blocking structure.The blocking structure is composed of an isolation structure arranged in the semiconductor substrate, a crosstalk modulation structure and a first contact hole structure which are sequentially arranged in a dielectric layer and correspond to the isolation structure.The blocking structure can form an effective light blocking wall structure on one hand, preventing light of one pixel region from being reflected by the metal interconnection layer and crosstalking into an adjacent pixel region; and on the other hand, the blocking structure can prevent over-etching of the isolation structure during processing of the first contact hole structure, thereby reducing the enrichment and diffusion of charges in the isolation structure, effectively improving the dark current performance of the device, and simultaneously reducing optical crosstalk and electrical crosstalk of the image sensor, which is conducive to improving the imaging quality of the image sensor.

This invention belongs to the field of power monitoring technology and discloses a brightness balancing and regional smoothing fusion algorithm for power monitoring images. The method includes: image denoising, using mean filtering and median filtering to smooth the image; image registration, performing optimal matching on two or more images obtained from different sensors, at different times, or from different angles; and image region fusion, smoothly fusing images with different angles and brightness contrasts. This method is applicable to panoramic video monitoring systems. Designed specifically for the complex lighting and high electromagnetic interference characteristics of power operation sites, this invention effectively eliminates on-site noise through adaptive preprocessing, and achieves a balance between global brightness uniformity and local detail preservation through layered brightness balancing, solving the problems of incomplete brightness balancing and detail loss in power scenarios encountered by general algorithms.

This application discloses an image processing method and apparatus in the computer vision field of the artificial intelligence field. The image processing method includes: obtaining a channel image corresponding to a to-be-processed raw (raw) image, where the channel image includes at least two first channel images; performing image restoration processing on the first channel image to obtain the restored first channel image; and performing image restoration processing on the to-be-processed raw image based on the restored first channel image to obtain a raw image obtained through joint demosaicing and denoising processing. The technical solution of this application can improve image quality of the raw image obtained through joint demosaicing and denoising processing.

The invention belongs to the technical field of nanometer measurement and control, provides a multi-mode cooperative force control method for contact mode scanning of an atomic force microscope, and aims to extract contact state information in real time by carrying out drift and aberration compensation on a measurement signal so as to realize multi-mode cooperative force control. Combined self-adaptive setting of control parameters is carried out in combination with sample morphology characteristics and error signal statistical characteristics, and undisturbed switching between a steady state controller and a transient state controller is realized, so that stable, rapid and low-noise force tracking control is realized in samples with different rigidities and changing noise environments. And the stability and the imaging quality of AFM contact mode scanning are obviously improved. According to the invention, adaptive force control on samples with different rigidities and complex shapes is realized, and the scanning stability and imaging quality of the contact mode atomic force microscope are remarkably improved.

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

The invention provides an optical filter adaptation-based lens zooming light supplement control method and related equipment. The method comprises the following steps of: obtaining a zooming instruction of a camera and analyzing the zooming instruction to obtain a current field angle; judging a light supplementing mode according to the field angle, and calculating a first current value and a second current value of the main lamp group and a third current value of the spotlight; and driving the three LED lamps to output supplementary light according to the current value. According to the invention, the zoom state of the camera is linked with the light supplementing system, the light supplementing modes are automatically switched according to different field angles, and the power distribution of each LED lamp is optimized, so that the problems of insufficient edge illumination in a wide-angle mode and center brightness attenuation in a long-focus mode in a traditional fixed light supplementing scheme are solved, uniform light supplementing in a full-focus section is realized, and the light supplementing efficiency is improved. And the imaging quality in different shooting scenes is improved.

The application relates to the technical field of image digitization, in particular to an image processing method and device based on AI frame alignment and blur elimination, equipment and a medium, which comprises the following steps: acquiring continuous multiple frames of image data, performing feature extraction on each frame of image data, the feature extraction comprises detecting image feature points by using a detection algorithm, and a binary feature vector of each image feature point is generated; the binary feature vector is input into a pre-trained lightweight neural network model for feature matching, a geometric transformation model between each frame is calculated, and a transformation matrix is obtained; according to the transformation matrix, geometric transformation is applied to the current frame, alignment with a reference frame is realized through inverse mapping and bilinear interpolation; through a content perception filling algorithm, a boundary missing area generated due to geometric transformation in the aligned image data is identified and repaired, and the aligned image data is filled. The application has the effect of improving the quality of a film and television work after scanning.

This application relates to a high-precision visual inspection system and method for product sides, belonging to the technical field of visual inspection. It includes a worktable, a light source, a vision camera, and reflectors. The worktable has an inspection area for placing the product. The light source illuminates the side of the product within the inspection area. The vision camera is positioned above the inspection area. Several reflectors are obliquely arranged on the worktable, each corresponding to a side of the product within the inspection area. The reflectors are located to the side of the corresponding side of the product. When the light source illuminates the side of the product, the light reflected from the side is reflected by the reflectors to the central area of ​​the vision camera. This application achieves high-precision inspection of all sides of a product under single-vision camera conditions, reducing equipment cost and size.

This invention relates to a method and system for multiple planning and force adjustment of welding allowance in robotic machining. The invention includes real-time monitoring of weld allowance changes to obtain real-time actual weld allowance data; establishing a material removal rate model based on historical grinding data and material properties; wherein the historical grinding data includes the material removal amount of materials with different properties under different grinding parameters; the material removal rate model is used to predict the material removal amount based on the actual grinding force and material properties; the grinding parameters include grinding speed, grinding path, magnitude and direction of grinding force and / or the tilt angle of the grinding tool; when there is a deviation between the actual weld allowance data and the target allowance, the grinding parameters are dynamically adjusted based on the material removal rate model; future grinding needs are predicted based on the current grinding state, and the grinding parameters are adjusted in advance. This invention improves the consistency of welding allowance processing and grinding accuracy, and enhances grinding quality and efficiency.