305 results about "Dark zone" patented technology

The invention discloses a high-precision image processing method and system based on illumination adaptive compensation, and relates to the technical field of computer vision and image processing, and the method comprises the steps: inputting an original image, and dividing the image into a high-frequency edge layer, an intermediate-frequency texture layer and a low-frequency illumination layer through a multi-scale residual network; acquiring illumination intensity, color temperature and scene categories in real time by using an ambient light sensor and a scene semantic segmentation model, and generating dynamic compensation parameters; carrying out dynamic range expansion on a low-frequency illumination layer based on a physical illumination model, and adjusting the weight of highlight suppression and dark area enhancement through a self-adaptive S-shaped exposure curve; a double-branch generative adversarial network is adopted, noise suppression and super-resolution reconstruction are carried out on the high-frequency layer, and texture detail enhancement is carried out on the intermediate-frequency layer; aligning the data of the depth camera and the infrared sensor with the visible light image through a cross-modal fusion module; and performing tone mapping on the fused image based on human visual characteristics, and outputting an enhanced image with a high dynamic range and reserved details.

The invention provides an intelligent control method for a floodlight illumination system, and the method comprises the steps: obtaining an environment surface roughness coefficient, spectral reflection distribution and spatial geometric change data, determining the wall surface material absorptivity and shielding region coordinates, and obtaining environment reflection characteristics and shielding distribution data; analyzing shielding boundary sharpness and shielding angle distribution according to the spatial geometric change and the coordinates of the shielding area, calculating a luminous flux distribution curve of a local dark area, and judging whether the influence range of the dark area exceeds a preset threshold range or not; calculating the illumination coverage integrity according to the updated light field distribution and polarization reflection characteristics, determining the boundary sharpness of a light beam, and obtaining a light field uniformity parameter; and according to the light field uniformity parameter and the shielding thermal radiation effect, calculating and optimizing light field parameters.

The invention relates to a light spot uniformity optimization method and system for a high-precision VCSEL device, and the method comprises the following steps: carrying out the light field collection of a light-emitting surface of the VCSEL device, obtaining the intensity distribution of original light spots, analyzing the non-uniformity of each light-emitting unit, and extracting the non-uniformity characteristics of the light spots. And carrying out deviation cause analysis based on the characteristics, and identifying device structure deviation parameters. According to the method, an etching process is optimized, a corrected oxidized aperture configuration scheme is obtained, near-field light field simulation is carried out by adopting a finite difference time domain method, and optimized light field distribution is verified and predicted. And finally, adaptive compensation design is carried out on the Bragg reflector structure based on a prediction result, light field regulation and control are realized, target light spot uniformity distribution is finally obtained, and the problem that systematic analysis and feedback control on non-uniformity causes of a light emitting unit layer in a device are lacked in the prior art is solved. And local bright spots or dark areas are caused.

The invention relates to a low-illumination image enhancement method based on multi-mode classification and brightness feedback, and belongs to the field of image processing. The method comprises the following steps of: firstly, training a network, constructing a multi-modal illumination prior feature of an image, inputting the multi-modal feature and a brightness score of the image into an illumination perception classification network, obtaining a local probability value of image brightness, adaptively selecting a local or global enhancement processing method, and generating a fusion weight; in the local enhancement processing, dark area details are enhanced through a multi-scale parallel and double-attention mechanism, in the global enhancement, the brightness is improved by using a symmetric coding-decoding structure and a residual attention block, and linear fusion is performed after the brightness is enhanced; then, the brightness evaluation value of the image is fed back through the lightweight brightness estimation network, and the brightness of the image is enhanced. And optimizing the training network according to the joint loss function of image processing. The method provided by the invention can enhance image texture details and improve image definition under a non-uniform illumination condition and an extremely low illumination condition.

The invention provides a control method and a control system for building an independent acoustic space of an automobile cabin, which are applied to the technical field of sound field control of the automobile cabin, and are used for inputting a multi-channel vibration signal acquired in real time into a deep learning noise prediction model to obtain an in-automobile background noise prediction value at a future moment; the prediction noise is filtered by the secondary path estimation model and then is used as a feedforward reference signal for active noise reduction, and the prediction noise and a residual signal collected by a bright area error microphone are jointly used for weight updating of an adaptive filter; the updated filter generates a reverse-phase noise elimination signal and the reverse-phase noise elimination signal is played by a secondary loudspeaker in real time so as to counteract background noise of the bright area; and closed-loop adjustment of the noise reduction effect is formed based on the sound pressure level contrast ratio of the bright and dark areas, so that the independent acoustic space is kept stable in the time-varying environment of vehicle driving. According to the method, the low noise of the bright area and the isolated sound field of the dark area in the vehicle are realized by fusing deep learning noise prediction and active noise control, and the personalized auditory experience in the vehicle can be remarkably improved.

The invention relates to the technical field of artificial intelligence, and discloses a low-illumination scene-oriented unmanned aerial vehicle imaging data enhancement method, which comprises the following steps of: S1, acquiring unmanned aerial vehicle imaging data and constructing a training data set; s2, data preprocessing based on illumination partition; s3, constructing and training a data enhancement model; and S4, enhancing the imaging data of the unmanned aerial vehicle. The data preprocessing based on the illumination partition in the step S2 comprises the following steps: generating a low-illumination area mask and a medium-illumination area mask based on the brightness information of the low-illumination image; a Gaussian smooth convolution operation is applied to the low-illuminance region identified by the low-illuminance region mask to suppress noise, and an original value is reserved for the medium-illuminance region identified by the medium-illuminance region mask to generate a pre-processed image. The problems of low-illumination image noise amplification and detail loss are solved by generating low-illumination region masks and medium-illumination region masks and respectively adopting noise reduction and retention strategies, and the balance of dark region noise reduction and bright region detail protection is realized.

The invention discloses an ocular surface illumination treatment device and method, and belongs to the technical field of ophthalmology medical equipment and treatment. The device comprises an infrared camera module, a computer terminal analysis control module, an optical power detection module, a mechanical adjustment module, a safety switch module and an illumination module. Wherein the infrared camera module comprises an infrared CCD (Charge Coupled Device) camera and a near-infrared light source which are arranged at a preset included angle and can collect eye images and transmit the eye images to the computer terminal, and the highest recording speed of the infrared camera module is not lower than 200 frames per second; and the computer terminal analyzes the image to obtain pupil positions, diameters and distances, and adjusts relative positions of a shielding device and a lens group in the light path of the illumination module, the axis of the light path and the distance between left and right lens cones, so that the central dark area of the annular light spot is matched and overlapped with the pupil. Eye images are collected and processed firstly, then light spots and the lens cone are adjusted, finally phototherapy and real-time monitoring are carried out, light can be prevented from entering the fundus, the treatment safety is improved, and the device is suitable for ocular surface diseases such as xerophthalmia.

The invention relates to the technical field of image data processing, in particular to an impurity identification method and system for fruit and vegetable powder, and the method comprises the steps: collecting a fruit and vegetable powder image on a conveying belt, preprocessing the image into a gray-scale map, and calculating a dark channel index based on the gray-scale distribution characteristics in a neighborhood window to preliminarily screen a dark region; counting dispersion of gradient amplitude and information entropy of gradient direction in a pixel point neighborhood window, distinguishing smooth shadow and rough impurities by using the dispersion and the information entropy, and correcting a dark channel index to obtain impurity confidence; constructing a local histogram by using the impurity confidence as a weight, and carrying out adaptive weighted histogram equalization processing on the grey-scale map to enhance the impurity contrast and suppress the shadow; and completing impurity identification through Otsu threshold segmentation and connected domain analysis. According to the method, the problem that shadow is easily misjudged as impurities when accumulated powder is processed by a traditional algorithm is effectively solved, and the detection accuracy is improved.

The invention provides an image adjusting method and device, electronic equipment and a storage medium, and belongs to the technical field of computers. The method comprises the steps of obtaining an image displayed by a device screen under the condition that an ambient light condition of the device screen exceeds a preset ambient light condition, determining an RGBA value of each pixel in the image, determining a dark area of the image based on the RGBA value of each pixel in the image, and determining a dark area of the image according to a dark area ratio and a dark area contrast ratio of the dark area. And determining a contrast adjustment factor, and adjusting the image according to the contrast adjustment factor. Therefore, the contrast adjustment factor is determined according to the dark part proportion and the dark part contrast of the dark part area in the image, and the image is adjusted based on the contrast adjustment factor, so that the technical problems of overexposure and color distortion of the bright part area caused by blindly improving the overall contrast of the image can be solved.

The invention relates to the technical field of holographic gratings, in particular to a holographic grating with a high refractive index modulation degree and a preparation method thereof, and the preparation method comprises the steps: coating a grating substrate with a precursor material to form a coating, and preparing a holographic dry plate with a holographic material layer; performing interference exposure on the holographic plate to obtain a semi-finished grating; bleaching the semi-finished product grating, and soaking the semi-finished product grating in an extraction liquid to obtain a grating precursor with a groove; and filling the groove with a fluorine-containing polymer dopant to obtain the holographic grating. The part, corresponding to the exposure bright area, of the grating precursor with the grooves is a polymer with a high refractive index, the inert body in the exposure dark area is removed, air is left, the grooves are formed in the surface of the grating, the appearance of the grooves fluctuates, the grooves are filled with low-refractive-index substances, and finally the high-refractive-index substances in the bright area are formed. The dark area is of a grating structure made of a low-refractive-index material; by adopting a two-step processing method, the holographic grating without light leakage in the reverse direction can be manufactured.

A method for heating a furnace is provided in which in the furnace has at least one heating zone which is heated by combusting a fuel with an oxidant. The furnace further has a dark zone, downstream of the heated zone, to which) no fuel is supplied directly. The fuel and oxidant are supplied to the heating zone is substoichiometric manner, in that between 10% and 40% of the total oxidant for achieving stoichiometric or near stoichiometric combustion is supplied directly to the dark zone. The flue gas temperature is measured in and / or downstream of the dark zone, and the share of the total oxidant supplied to the dark zone is controlled so as not to exceed a predetermined maximum measured temperature. A method for retrofitting an existing furnace is also provided.

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 vehicle-mounted backlight module comprises a lower frame, a light bar and a light guide plate, the lower frame comprises a bottom plate and a side frame, the bottom plate is fixedly connected to the side frame and forms a containing cavity, the light bar is fixedly connected to the side frame, the light guide plate is arranged in the containing cavity, the light guide plate comprises a boss, and the boss is fixedly connected to the side frame. The lamp strip comprises a plurality of LED lamps and a flexible circuit board, the LED lamps are electrically connected to the flexible circuit board, the boss abuts against or is connected to the flexible circuit board, and the LED lamps are arranged between the bottom plate and the boss in the vertical direction. The vehicle-mounted backlight module capable of improving the corner dark area can solve the problems that in the prior art, the corner dark area appears in the light emitting area, and the boss of the light guide plate is broken, and the display effect and the stability of the backlight module are improved. The utility model further relates to a vehicle-mounted display device.

The T8 lamp tube comprises a light-transmitting lamp tube body with a through cavity penetrating in the axial direction, and is characterized in that a lighting source is arranged at a port of one end of the through cavity, the irradiation direction of the lighting source faces a port of the other end of the through cavity, a refraction lens covers the lighting source, and a reflection mirror is arranged at a port of the other end of the through cavity; the refraction lens and the reflection mirror are oppositely arranged. The T8 LED lamp tube has the advantages that the structure is simple, and the problems that the light emitting direction of a traditional T8 LED lamp tube is concentrated, a dark space exists, and the beam angle is limited are fundamentally solved through the secondary optical design of refraction and reflection.

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.

The continuous light-emitting panel lamp comprises a main body, a diffusion panel and an end plate assembly, and an opening is formed in the bottom of the main body; the diffusion panel is arranged at the opening; the end plate assembly is installed at the end of the body and comprises an end diffusion plate making contact with the diffusion panel, the bottom end of the end diffusion plate is located on the outer side of the end of the diffusion panel, and the outer wall face of the end diffusion plate is at least partial area of the end face of the continuous light-emitting panel lamp. The continuous light-emitting panel lamp is novel in structure, the end portion of the continuous light-emitting panel lamp is provided with the end portion diffusion plate, the phenomenon that in the prior art, the bottom face of an end plate assembly cannot emit light, and consequently a dark area is formed is effectively overcome, the lighting effect is improved to a certain degree, and in a panel lamp module formed by splicing a plurality of continuous light-emitting panel lamps, the light emitting efficiency is improved. The junction of the two spliced continuous light-emitting panel lamps can achieve continuous light emitting, the phenomenon that the brightness is reduced does not occur, and the visual perception of an observer can be improved.

A particulate inspection system may comprise a reservoir rest body having a pattern of light and dark regions. The system may further comprise a rest body backlight. The system may further comprise an external illuminator. The system may further comprise a vision assembly opposite the rest body. The vision assembly may include at least one imager. Each imager may- have a field of view encompassing at least a portion of rest body. The system may further comprise a controller in data communication with each of the at least one imager. The controller may be configured to command capture of a series of images from each imager, receive the images, process the images into processed images, detect regions of interest within the processed images, analyze the regions of interest, and classify the regions of interest as one of a bubble and something other than bubble.

The invention discloses a vein image enhancement method and device, a storage medium and equipment, and belongs to the field of biological feature recognition. The method comprises the following steps: performing image enhancement on a region of interest of a vein image in a defogging processing mode to obtain a defogged enhanced image; according to the method, the vein imaging condition and the imaging feature are considered, the defogging processing mode is selected to enhance the vein image, the contrast of the vein and the texture can be enhanced, vein details can be effectively restored, the details of the dark area are greatly improved, and the vein in the bright area is thicker. According to the invention, vein images of different manufacturers in different acquisition modes can be normalized to a relatively uniform standard through an image enhancement mode of defogging processing, and the comparison accuracy can be greatly improved in a cross-library comparison task.

The invention discloses a dynamic image enhancement method and device, equipment and a storage medium, and relates to the technical field of image processing. The method comprises the following steps: screening out dark blocks according to a brightness value of each block in an image frame in combination with a dark region brightness threshold value; calculating the dark block aggregation degree values of the dark blocks, and screening out the maximum dark block aggregation degree value as the dark block aggregation degree value of the image frame according to the dark block aggregation degree value corresponding to each dark block; calculating a reference intensity increment corresponding to the image frame based on the dark area aggregation degree value of the image frame; calculating an actual intensity increment corresponding to each pixel point based on the reference intensity increment as well as a brightness level and an original intensity value corresponding to the pixel point in the image frame, and obtaining a post-improvement intensity value of the pixel point according to the actual intensity increment and the original intensity value, so as to adjust the output brightness of the pixel according to the post-improvement intensity value to obtain an enhanced image; wherein the higher the brightness level is, the smaller the actual intensity increment is. The dynamic image enhancement effect can be improved.

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 invention provides a high beam system with a projection function. The high beam system comprises a light source module, a high beam primary optical system and an imaging lens. The high beam primary optical system comprises a primary light incident surface, a first primary light emergent surface and a second primary light emergent surface; the imaging lens comprises a first imaging light incident surface, a second imaging light incident surface and an imaging light emergent surface; the bottom boundary of the first imaging light incident surface is partially or completely connected with the top boundary of the second imaging light incident surface; the focus of the imaging light-out surface is located on the first imaging light-in surface and is located on the bottom boundary of the first imaging light-in surface; the focus of the imaging light-emitting surface coincides with the focus F1 of the second primary light-emitting surface. The light supplementing module is integrated into the high-beam system, so that the high-beam system has the near-field light supplementing capability, and a low-beam near-field dark area is optimized.

The present invention provides an electron microscope capable of suppressing light scattering due to a hole for electron passage in a reflector. The electron microscope comprises an electron source that emits an electron beam with which to irradiate a sample, a light source that emits excitation light with which to irradiate the sample, a reflector which has a hole that the electron beam passes through and which reflects the excitation light toward the sample, a detector that detects electrons emitted from the sample irradiated with the electron beam and outputs a detection signal, and a control unit that generates an observation image of the sample on the basis of the detection signal. The electron microscope is characterized by further comprising: a condensing lens disposed between the light source and the reflector to condense the excitation light and also form a dark area covering the hole in the center of the excitation light.

The invention relates to the technical field of illumination, and discloses an LED filament, an LED filament lamp and a control method thereof.The LED filament comprises a substrate with two electrodes, a first light mixing set and a second light mixing set are arranged on the two faces of the substrate respectively, the first light mixing set comprises two LED chips, the second light mixing set comprises two LED chips, a light excitation layer is arranged on each LED, and the first light mixing set and the second light mixing set are arranged on the substrate respectively. And the whole body is wrapped with a diffusion layer to form the filament. A plurality of lamp filaments are arranged in the LED filament lamp, conduction of a plurality of different chips is achieved through arrangement of a small number of electrodes in appearance, and light mixing and dimming are achieved by controlling the conduction duration and period of the different chips and correspondingly configuring LEDs of different colors and light excitation layers made of different conversion materials. The lamp filament basically has no dark area or chromatic aberration area which can be identified by naked eyes, the whole body of the lamp filament is mixed with light, the emergent light is uniform, and the light modulability and the light quality are improved. The filament and the lamp body are simple in structure, and the requirement of consumers for rejuvenating the retro aesthetic feeling of a traditional incandescent lamp is met.

The invention discloses a loudspeaker array beam forming method, electronic equipment and a storage medium, and relates to the technical field of beam forming, and the method comprises the steps: obtaining a distance value between each loudspeaker unit in a loudspeaker array and a corresponding impedance boundary, and an impedance value of the impedance boundary; matching a target beam forming filter in a plurality of preset beam forming filters according to the distance value and the impedance value; and filtering the input signal of the corresponding loudspeaker unit based on each target beam forming filter to form an output beam. In practical application, the applicable beam forming filter can be quickly matched only by acquiring the specific impedance boundary parameters of the current environment, the method can adapt to the boundary environment with limited acoustic impedance characteristics, the influence of the impedance boundary on sound wave propagation is accurately reflected, the beam pointing precision and the acoustic contrast are remarkably improved, and the method is suitable for popularization and application. And the grating lobes of the dark area are reduced, so that the optimization of the beam performance is realized on the premise of not needing on-site acoustic measurement, and the universality and the accuracy are both considered.

The line lamp comprises a lamp body, a light source plate, a lampshade and end covers, the light source plate is arranged in the lamp body, the lamp body is provided with an opening extending in the length direction of the lamp body, the lampshade is arranged on the opening, the two end covers are arranged at the two tail ends of the lamp body respectively, the tops of the end covers are provided with first oblique angles, and the first oblique angles are arranged close to the lampshade. A light reflecting piece is arranged on the end cover and used for reflecting the light rays refracted to the end cover. According to the line lamp capable of eliminating the dark area, the light-emitting dark area at the end of the line lamp can be eliminated, meanwhile, light emitted after the two line lamps are spliced is a complete continuous light ray, and the impression after the lamp is turned on is greatly improved.

The invention relates to the field of automobile lamps, and discloses a thick-wall light guide lamp. The thick-wall light guide lamp comprises a thick-wall piece provided with a first light inlet face, a second light inlet face, an optical face and a light outlet face. The light emitting surface is formed on the front wall surface of the thick-wall piece, and the second light incident surface and the optical surface are formed on the side wall surfaces of the two sides of the thick-wall piece; the first light source assembly is used for emitting first light rays, and the first light rays enter the thick-wall part through the first light inlet face to be spread and are emitted out of the light outlet face; the second light source assembly is used for emitting second light rays, and the second light rays enter the thick-wall part through the second light inlet surface to be spread and are emitted from the light outlet surface after being reflected by the optical surface; wherein an optical structure for collimating the second light is formed on the second light incident surface. According to the thick-wall light guide lamp, the front wall face of the thick-wall part emits light through the first light source assembly, the side wall face of the thick-wall part is subjected to supplementary lighting through the second light source assembly, and then the problem that a light-emitting dark area exists when the thick-wall part of the thick-wall light guide lamp is laterally observed is solved.

The invention relates to the technical field of LED backlight source testing, in particular to an LED backlight source brightness detection device and a detection method thereof. The method comprises the following steps: firstly, acquiring a static frame sequence of a brightness image of an LED backlight source to be detected and a synchronous driving current time sequence signal; constructing a brightness disorder coefficient based on the static frame sequence, and generating a detection distortion value by combining edge curvature mutation analysis of the superpixel region; generating a brightness fluctuation index based on the static frame sequence and the driving current time sequence signal, and constructing a defect comprehensive factor; analyzing the time domain correlation between the brightness fluctuation index and the defect comprehensive factor, and determining a brightness anomaly dynamic index; fusing the detection distortion value and the brightness abnormity dynamic index to generate a key space-time dynamic index; and inputting the key time-space dynamic index and the brightness image into a neural network model, and outputting a brightness detection index of the LED backlight source to be detected. According to the invention, the recognition capability of highlight area details and dark area gradient during brightness detection of the LED backlight source is improved.

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.