66 results about "Dark zone" patented technology

The application discloses an integrated double-color-temperature lamp box light source, and belongs to the technical field of illumination light sources.The integrated double-color-temperature lamp box light source comprises a shell and a control module, the shell is a hollow cylindrical structure, an installation cavity is arranged in the shell, and the inner wall of the shell is provided with annularly arranged heat dissipation fins; the annularly arranged heat dissipation fins and heat dissipation through holes form a high-efficiency heat dissipation channel, the heat dissipation channel is matched with a heat-conducting pad to quickly conduct the heat of a substrate, and the working stability and service life of LED lamp beads are significantly improved; warm-color-temperature and cold-color-temperature LED lamp beads are alternately and uniformly arranged in an annular manner, light mixing is more uniform and soft, there are no obvious color-temperature partition and dark area, and the color rendering effect is better; the color temperature and brightness can be flexibly adjusted by cooperating a light-adjusting knob with a wiring rear seat, different illumination scene requirements can be adapted, the sealing property of a wiring position is improved by a waterproof sealing pad, the overall structure is compact, installation and positioning are accurate, integrated design is realized, the assembly efficiency is high, and the integrated double-color-temperature lamp box light source has the advantages of excellent heat dissipation, accurate control, safety in use, wide applicability and the like.

The present application relates to the technical field of thermal process, and especially relates to a method for optimizing edge searching precision of a surface inspection system, which divides a gray scale distribution into two regions of light and dark based on a gray scale reference value; sets a fixed edge threshold parameter or a variable edge threshold parameter for the surface inspection system; resets a periodic parameter; collects defect data in a way of training, modifying and adding; and optimizes a detection region. The present application has the following advantages: the gray scale range is expanded from 0-255 to 0-280, the reference value is increased from 128 to 140, and the light and dark regions are redivided, so that the defect pixel distribution is more balanced; for the working condition that the dark strip steel is close to the worn roller surface, the edge searching accuracy is improved, the positioning error is reduced, and the edge searching drift caused by the change of steel type and the wear of roller surface is solved; and the fixed and adaptive double-mode edge threshold strategy is adopted, the threshold value in the region within 30mm from the edge is narrowed by 20%-30%, and the fixed mode reduces the false positive rate.

This invention discloses a low-light image quality enhancement system and method based on enhanced night scene modeling. The system includes: a sample data construction module, which generates enhanced low-light scene images based on an initial image dataset using a dual-channel hybrid generative network architecture and constructs an optimized training sample library; and a hybrid enhancement model, constructed based on an attention module and a probabilistic graphical model module. During the training phase, the hybrid enhancement model uses the optimized training sample library as input and employs a region-adaptive weighted loss function for parameter optimization. During the application phase, the optimized model receives the low-light image to be processed, estimates the illumination and noise distribution of the low-light image, and generates the enhanced image. This invention significantly improves the coverage of night scene training data and achieves adaptive enhancement of image features under low-light conditions, significantly improving the noise suppression effect in dark areas and the ability to restore image details.

This invention provides a video image contrast enhancement method for warehouse monitoring scenarios, relating to the fields of image processing and video surveillance technology. It aims to solve problems such as insufficient contrast, unclear details in dark areas, amplified noise, and distorted edge structures in warehouse monitoring videos. The method preprocesses the video frames by performing grayscale normalization, constructing a variational energy function that includes a relative error fidelity term, an auxiliary variable consistency constraint term, a sparsity constraint term, and an adaptive regularization term. It then employs an iterative update method, alternating between the enhanced image and auxiliary variables, to achieve image contrast enhancement, noise suppression, and edge preservation. Finally, the enhanced video frames are reconstructed based on the original temporal information to obtain an enhanced video stream. This invention can improve the clarity and recognizability of video images in complex warehouse monitoring environments, enhancing the reliability of subsequent intelligent monitoring and analysis.

This invention discloses a day-night cross-domain vehicle re-identification method, device, system, and storage medium, comprising: First, constructing day-night dual-domain vehicle data input and extracting multi-level feature representations using a deep convolutional neural network; Second, designing a style-aware domain normalization module to enhance style diversity in the shallow layers of the network and retain domain-specific statistical characteristics in the deep layers; Further introducing a dynamic illumination-aware structure enhancement module to adaptively suppress strong light areas and dark areas at night, and to enhance vehicle structural contour information through multi-scale pixel gradients; Simultaneously designing a cross-domain adaptive feature fusion module to construct an explicit spatial correspondence between day-night vehicle features, achieving accurate cross-domain feature alignment; Finally, achieving day-night cross-domain vehicle identity consistency discrimination through multi-loss joint optimization and self-distillation constraint mechanisms. Using the technical solution of this invention, high-precision day-night vehicle re-identification can be achieved without relying on infrared equipment.

The application discloses an audio control method and device of an in-vehicle acoustic system, a storage medium and equipment. The method comprises the following steps: acquiring an audio control instruction triggered by an object at different positions in a vehicle, the audio control instruction being used to indicate an audio playing position, audio content and an audio volume; determining a bright area and a dark area of a sound field space in the vehicle according to the audio control instruction, the bright area being used to represent a position of playing audio in the sound field space in the vehicle, and the dark area being used to represent a position of suppressing audio in the sound field space in the vehicle; determining a first control signal corresponding to the bright area and a second control signal corresponding to the dark area according to the bright area and the dark area; controlling a loudspeaker corresponding to the bright area to play audio according to the first control signal, and controlling a loudspeaker corresponding to the dark area to suppress audio according to the second control signal, so that different audio content is played in the bright area and the dark area respectively, and / or different audio volume is played in the bright area and the dark area respectively, thereby achieving the effect of a personalized space sound field.

The present invention provides a vehicle lighting device wherein the lens arrangement includes an enhanced high-beam functional zone and at least two glare-free high-beam zones. By designing different projection angles for different zones of the lens arrangement, the light projected by several zones can partially overlap, and the combined light spot is therefore relatively uniform. In addition, the two adjacent glare-free high-beam sources are interconnected in the adjacent glare-free high-beam source groups, thereby shortening the wiring on the circuit board arrangement and allowing both light sources to be controlled simultaneously. By adding the low-beam auxiliary lighting function in each zone of the lens arrangement, i.e.,Adding the low beam auxiliary lighting light source groups to the circuit board assembly and adding the low beam auxiliary lighting reflector surface groups to the reflector shell assembly solves the problem of dark areas appearing in the lighting pattern when the vehicle's low beam function is activated but the high beam function is not. This effectively resolves not only the problem of insufficient central light intensity in the vehicle's high beam mode but also optimizes the lighting uniformity in low beam mode, thus improving the overall lighting performance of the vehicle's lighting.

This utility model discloses a turn signal assembly with uniform brightness and a high safety factor, including a turn signal cup and a front turn signal light guide plate. The turn signal cup has a turn signal hole for mounting the turn signal. The turn signal light guide plate has a main light guide plate facing the turn signal hole, an inner light guide plate and an outer light guide plate, located on the left and right sides of the main light guide plate and bent inwards respectively. The angle between the inner light guide plate and the main light guide plate is acute, and the angle between the outer light guide plate and the main light guide plate is obtuse. A light guide ridge is provided on the inner side of the turn signal light guide plate, and an inwardly recessed stepped portion is provided on the bottom of the outer side. This utility model's main light guide plate, in conjunction with the inner acute-angled and outer obtuse-angled light guide plate portions, expands the light diffusion range through refraction at different angles, avoiding the central bright spot or edge dark area of ​​traditional turn signals. The horizontal ridges of the main light guide plate work in conjunction with the gradually widening ridges of the inner / outer light guide plates, ensuring that the light is emitted uniformly after multiple refractions, resulting in a more balanced brightness distribution and improved signal recognition.

The utility model discloses a novel light guide plate with uniform light distribution relates to novel light guide plate technical field, this novel light guide plate with uniform light distribution includes novel light guide plate, and the novel light guide plate four corners are all connected with fixed clamp seat, the utility model discloses, light guide plate adopts gradual change compound dot, and the design of circular dot and rhombus dot is combined with the layout of optical simulation optimization, and the optimization surface light intensity solves the problem of uneven light emission from the light conduction source, and the nanometer diffusion film cooperates with the micro prism brightening layer, and the light is regulated by secondary scattering and total reflection, and the light emission uniformity is improved 40% than traditional light guide plate, and effectively eliminates bright spot, dark area, and adapts high -end display, precision lighting scene.

The application provides a light adjusting component and an optical system for a blue light therapy instrument, wherein the light adjusting component comprises an optical lens combination, the optical lens combination comprises a pair of optical lens units, two optical lens units of the pair of optical lens units are mirror-symmetrically arranged, and the light spot of the light of the treatment light source projected on a treatment area through the light adjusting component is in a rectangular shape. The application provides an optical system with a rectangular light spot with clear boundaries, which is used for infant jaundice treatment, the treatment light spot range is just clear and uniformly radiated on the treatment area to achieve effective treatment effect, which can not only avoid the situation that too much light overflows, resulting in low utilization and light pollution, but also avoid the situation that there are dark areas and four corners that cannot be covered in the prior art, and can also avoid the situation that the light spot splicing produces a situation that the light and dark difference of the superposition place and the non-superposition place is large and the uniformity is poor.

The present application belongs to the technical field of image processing, and particularly relates to an airborne imaging non-uniform low-light scene image enhancement method. The method comprises the following steps: S1, processing a non-uniform low-light scene image to obtain H, S and V channel images; S2, performing dark area correction calculation on the V channel image to obtain a first image; S3, performing bright area suppression calculation on the V channel image to obtain a second image; S4, fusing the first and second images to obtain a fused image; S5, inputting a pixel distribution optimization image into a nonlinear image transformation tone adjustment model for processing to obtain a mid-term enhancement image; and S6, performing pixel value range stretching processing on the mid-term enhancement image, and combining the H and S channel images to obtain an optimized enhancement image. The present application can effectively improve the visibility of the dark area of the image and retain the detail feature information of the bright area while retaining the color richness and level of the image through the regional differentiation calculation and adaptive fusion mechanism.

This application relates to a vehicle signal light guide structure and a vehicle. The vehicle signal light guide structure of this application includes: a light guide assembly and a sheath assembly; wherein, the sheath assembly is detachably disposed on the light guide assembly, and the sheath assembly is made of a light-transmitting material. The vehicle of this application includes: a signal light body and multiple of the above-mentioned vehicle signal light guide structures, the vehicle signal light guide structures being disposed within the signal light body. By installing the sheath assembly at the connection of the light guide and the emitting end, this application can effectively reduce bright spots and block excess bright spots, achieving optimal lighting uniformity and preventing defects such as local dark areas or bright spots, thereby better meeting the uniformity requirements of automotive signal lights.

The application provides a high-beam and low-beam integrated lens assembly and a vehicle lamp, and relates to the technical field of vehicle lamp illumination. The application comprises a low-beam light source and a high-beam light source; a lens comprising a lens main body and a deformation optical unit; a light type baffle; a low-beam reflector bowl; a first light beam emitted by the low-beam light source is reflected by a first reflecting surface, and after being refracted by the lens main body, the first light beam forms a low-beam light type with a cutoff line; a second light beam emitted by the low-beam light source is reflected by a second reflecting surface and reaches the deformation optical unit, and after being refracted by the deformation optical unit, the second light beam forms complementary light on the upper side of the cutoff line of the low-beam light type; a high-beam reflector bowl; a light beam emitted by the high-beam light source is reflected by the high-beam reflector bowl to the deformation optical unit, and the light beam forms a high-beam light type by being inclined to the first light beam, and the lower edge of the high-beam light type coincides with the cutoff line of the low-beam light type. The application can eliminate the layered phenomenon defect that "there is a dark area above the low-beam cutoff line and there is a fault below the high-beam coverage" without adding new light sources and reflectors.

The utility model provides a curtain wall floodlight mapping point light source light box, including by the outside to the inside setting in proper order perforated aluminum plate, light source cavity, backplate, detachably connecting with point light source array layer in the light source cavity, the front of point light source array layer is sealed and is provided with light transmission acrylic light guide layer, the distance between point light source array layer and light transmission acrylic light guide layer is adjustable. Whole detachable connection, simple structure, convenient operation, the spacing between point light source array layer and light transmission acrylic light guide layer is dynamically adjustable, can significantly enhance the flexibility and functionality of optical system, adjust the spacing to change the coupling efficiency of light in the light guide plate, eliminate local bright spot or dark area, realize more uniform light output, through spacing change combination micro prism array, realize the switching of wide-angle diffusion and narrow-angle spotlight, make the mapping effect reach the best state, avoid the problem such as the glare of point light source.

A tunable and reconfigurable transparent electrode for a light valve includes a semi-insulating material substrate having an electrically insulating dark region and a shallow electrically conductive region. The light valve further has a transparent and conductive contact supported by the semi-insulating material substrate, wherein charged carriers are generated optically in response to incident light passing through the transparent and conductive contact and into the semi-insulating material substrate.

The application provides a point cloud completion method and device and a storage medium, which comprises the following steps: collecting original images and stripe images of an object through a binocular structured light system; reconstructing a point cloud with high precision but with reflection and dark area missing by using the stripe images; meanwhile, calculating a disparity map by using a FoundationStereo deep learning model for stereo matching based on the original images to obtain a point cloud which is complete but has lower precision than the stripe image reconstruction; in order to meet the point cloud coordinates in the two three-dimensional reconstruction methods, the point cloud coordinates of the two reconstruction methods are corrected based on a standard ball multi-position reconstruction data calculation error model; firstly, the two point clouds are spatially registered and aligned; then, the missing area of the high-precision point cloud is analyzed, the corresponding area in the low-precision point cloud is located through image mapping, and the point cloud of the corresponding area is extracted as a patch. The application effectively solves the data missing problem of the structured light measurement in the reflection and dark area, and realizes the balance between the point cloud precision and completeness.

The utility model discloses a kind of L-shaped lamp strip connectors, including connector main body, the connector main body is equipped with first lamp strip installation groove and second lamp strip installation groove, the first lamp strip installation groove extends to the side of the end of the second lamp strip installation groove, the inside of the connector main body is installed with a circuit board, the circuit board is equipped with the first connecting part extending to the first lamp strip installation groove, the circuit board is equipped with the second connecting part extending to the second lamp strip installation groove, the top cover of the connector main body is equipped with a top cover, the bottom of the first connecting part is equipped with first contact conductive disc, the bottom of the second connecting part is equipped with second contact conductive disc, the connector main body is long strip type setting, the circuit board is L-shaped setting.The utility model is simple in structure, and the conductive connection between two lamp strips is quickly realized, the interval between lamp strip is small, when lighting, there is no dark area on visual, and the lighting effect is good, and consumer use effect is good.

An end-to-end neural human rendering tool (NHR) is provided for dynamic human body photography in multi-view scenarios. The Feature Extraction (FE) module employs PointNet++ to analyze and extract features based on structure and semantics. The Projection and Rasterization (PR) module maps 3D features onto the target camera to form a 2D feature map. The Rendering (RE) module renders the final image derived from the feature map at the new viewpoint, employing an anti-aliased CNN to handle holes and noise. A foreground human mask generated by the NHR at each newly synthesized viewpoint is used to construct the visible shell to handle dark areas such as textureless areas and black clothing.

The present disclosure provides an imaging device and a photographing mode control method, a computer program product thereof. The photographing mode control method of the imaging device comprises: obtaining a brightness map of an image frame of the imaging device in a first photographing mode; performing normalization processing on the brightness map according to an exposure parameter of the image frame to determine a normalized brightness histogram distribution of the image frame; determining a bright area proportion and / or a dark area proportion of the image frame based on the normalized brightness histogram distribution of the image frame; and determining whether to switch the imaging device from the first photographing mode to a second photographing mode based on at least the bright area proportion and / or the dark area proportion, wherein the first photographing mode and the second photographing mode are different photographing modes in a high dynamic range mode and a normal mode. The photographing mode control method of the imaging device can facilitate the definition of the dark area and the bright area using a unified judgment standard, and improve the universality of the switching of the high dynamic range mode.

This application provides a nighttime surveillance video enhancement method based on spatiotemporal joint and photometric adaptive mapping, belonging to the field of video image processing. The method includes: firstly, constructing a temporally correlated video frame sequence; then, decoupling the video sequence into a low-frequency illuminance feature sequence and a high-frequency reflectance feature sequence through a dual-branch decoder network; next, applying an iterative photometric adaptive mapping function to adjust the brightness of the low-frequency illuminance features, and applying deformable convolution and three-dimensional dynamic filtering to perform spatiotemporal alignment and denoising processing on the high-frequency reflectance features; finally, fusing the processed illuminance and reflectance features to reconstruct the enhanced video frame. This invention solves the problem of inter-frame temporal flicker and noise avalanche caused by brute-force brightening in traditional algorithms by completely decoupling and differentially parallelizing illuminance and reflectance components, improving details in dark areas while preserving edge sharpness, and achieving high-quality real-time enhancement of nighttime surveillance videos.

This utility model discloses a wall washer light, including a base and a light-emitting component. The base includes a bottom shell and a light-emitting cover, which together with the bottom shell form a receiving cavity. The light-emitting cover has a light-emitting hole that communicates with the receiving cavity. One end of the light-emitting hole near the receiving cavity forms a light inlet, and the other end away from the receiving cavity forms a light outlet. The light-emitting component is disposed on the base and located within the receiving cavity. The light-emitting component includes a light-emitting body and a lens, with the light-emitting body and the lens facing each other. The light-emitting side of the light-emitting component faces the light inlet. A notch is provided on a portion of the periphery of the light outlet in the light-emitting cover. Because of the notch on the periphery of the light outlet, some light can escape through the notch, thereby diffusing the illumination range, reducing the height of the dark area of ​​the wall washer light, and improving its lighting effect.

This utility model relates to a structure for a light-emitting ring without dark areas on an air conditioner display panel. It comprises: a circuit board, a light shield, several LED beads, and a PET diffusion film. The light shield is assembled on the circuit board and has a light guide ring groove. Several LED beads are spaced apart and embedded in the light guide ring groove and connected to the circuit board. The LED beads emit light from the side, causing the light emitted by the LED beads to be directed onto the side wall of the light guide ring groove and diffused through the side wall before reaching the opening of the light guide ring groove. The PET diffusion film is installed on the light shield and effectively covers the opening of the light guide ring groove. The back of the PET diffusion film is printed with viscous ink containing diffusing powder particles, allowing the diffused light to be re-excited and uniformly diffused by the diffusing powder particles in the viscous ink, presenting a continuous, dark-area-free halo. This solves the problem of dark areas appearing in the intervals between multiple front-emitting LED beads, resulting in a continuous, uniform halo with excellent visual effects, which is beneficial for air conditioner display implementation.

This invention relates to a photometric stereoscopic 2.5D mold monitoring imaging method, comprising a pre-calibration step and a real-time monitoring step. The real-time monitoring step includes: S1: sequentially triggering multiple light sources from different directions to illuminate individually via pulse control signals, and simultaneously triggering a camera to acquire multiple corresponding mold surface images; S2: performing pixel-level synthesis of the multiple mold surface images to generate a stable image with uniform illumination; S3: calculating the pixel-level surface normal vector distribution based on the photometric stereoscopic method; S4: performing integral reconstruction of the normal vector distribution to generate a 2.5D height map; S5: detecting mold surface anomalies based on the stable image and / or the 2.5D height map. This invention, through multi-directional light source collaborative illumination and image synthesis strategy, accurately solves the problem of uneven illumination in unilateral bright and dark areas, obtaining a bright and clear detection image of the entire surface, while also possessing high stability and real-time performance, meeting the needs of industrial mold monitoring.

The application discloses a high-efficiency carbon fixation microalgae breeding device, and relates to the technical field of carbon fixation microalgae breeding.The device comprises an elongated pool, a partition plate is arranged at the middle position of the elongated pool, so that a loop-shaped channel in the shape of a long strip is formed in the elongated pool, bottom plates are arranged in the two parallel straight channels of the loop-shaped channel, the upper surfaces of the bottom plates are arranged in an inclined manner, and the inclined directions of the two bottom plates are opposite.Two liquid lifting mechanisms are arranged at the high end positions of the two bottom plates respectively, and are used for lifting the algal liquid in the loop-shaped channel to the high end of the bottom plate, so that the algal liquid flows downward along the upper surface of the bottom plate automatically.Two groups of disturbance mechanisms are arranged on the upper surfaces of the two bottom plates.The algal liquid is driven to form a turbulent state by the bidirectional inclined bottom plates, the liquid lifting mechanism and the disturbance mechanism, the problems of surface light inhibition and bottom dark area are reduced, and the light energy utilization efficiency of the microalgae is improved significantly.

The utility model relates to a kind of diffraction waveguide light beam density regulation and control devices based on birefringence effect.The diffraction waveguide light beam density regulation and control devices based on birefringence effect include: waveguide substrate, made of material with birefringence effect;Coupling-in port, set in the incident plane of waveguide substrate, for coupling incident light;Coupling-out port, set in the exit plane of waveguide substrate, for coupling transmission light;Temperature regulation module, set in the side of waveguide substrate, for controlling the temperature of waveguide substrate, adjusting the propagation path of TE mode incident light and TM mode incident light inside waveguide substrate.The above-mentioned device utilizes the different diffraction angles of TE mode incident light and TM mode incident light due to different refractive indices, increases the propagation path width of light inside waveguide substrate, and improves the beam transmission density.Meanwhile, the temperature of waveguide substrate can be accurately controlled by temperature regulation module, to realize dark area distribution programmable and beam density dynamic optimization.

This invention provides a method for scanning a laser to generate three-dimensional information of an object without requiring high-precision timing control. [Solution] The scanning mechanism 10 scans the object with a laser according to pattern information indicating a projection pattern. The projection pattern indicated by the pattern information includes a clock line in which bright areas irradiated by the laser and dark areas not irradiated by the laser are arranged alternately, and a data line adjacent to the clock line in which data patterns representing numerical values ​​are arranged according to the arrangement of bright / dark areas. The data line has a sequence of data patterns in which, when a predetermined number of consecutive data patterns are viewed as one data, the data are different from each other. In the projection pattern, all bright areas are connected.

The application provides a histogram equalization method for protecting details, comprising the following steps: S1, dividing an input luminance image into blocks; S2, counting a histogram of the image; calculating an average gray level of a current block; S3, histogram redistribution, comprising the following steps: calculating a clipping threshold; histogram clipping and redistribution; S4, calculating a mapping function; S5, adjusting the mapping function; and S6, enhancing the input image. The histogram equalization method solves the problem of over-enhancement in bright areas and dark areas, and ensures that low-contrast images will not lose the details of bright areas and dark areas after being enhanced.

The utility model discloses a novel light -emitting structure of thick -walled piece of reversing lamp, including wall thickness spare body, the light -emitting area of wall thickness spare body includes main light -emitting area and diffusion area, main light -emitting area and diffusion area staggered distribution arrangement on the transverse, main light -emitting area is divided into a plurality of main light -emitting monomer on the longitudinal, diffusion area is divided into a plurality of diffusion monomer on the longitudinal, diffusion monomer includes first function diffusion monomer, second function diffusion monomer and third function diffusion monomer. The utility model through micro - unit staggered distribution, diffusion function directional subdivision and single double lamp dynamic adaptation three big innovations, guaranteeing that reversing lamp satisfies the while of regulation intensity requirement, thoroughly solve the traditional thick -walled piece center dark area problem to the light efficiency and design flexibility of remarkable promotion, and its core value lies in the structural innovation replacement complex brightening technology, possesses the mass production advantage of low -cost, high reliability.