52 results about "Visual sensitivity" patented technology

The invention provides an image watermark generation method, an image watermark generation device and a computer storage medium. The image watermark generation method comprises the following steps: acquiring original potential features of an original image; watermarking information with the same size as the original potential features is fused with the original potential features, and fused potential features are obtained; acquiring a pixel-level visual sensitivity mask parameter of the original image; adjusting the watermark intensity of the fused potential feature by using the pixel-level visual sensitivity mask parameter to obtain an adjusted potential feature; generating an image watermark according to the adjusted potential features; and generating a watermark image according to the image watermark and the original image. According to the image watermark generation method, the watermark embedding strength is adaptively adjusted by using the pixel-level visual sensitivity mask parameters, so that global collaborative adaptation of watermark energy distribution and image visual characteristics is realized, and the robustness of the watermark to composite attacks is remarkably improved.

The invention discloses a stereoscopic vision optimization method and system for a naked-eye 3D large screen, and particularly relates to the technical field of naked-eye 3D vision optimizing.The method comprises the steps that environment illumination and audience positions are sensed in real time through multi-sensor fusion, and an environment light field model is established; glare crosstalk noise is predicted based on physical simulation, and self-adaptive suppression and compensation are carried out in combination with human eye visual sensitivity and image content features; a virtual camera is dynamically generated according to the real-time positions of the eyes of the audience, and a lightweight neural radiation field renderer is used for real-time re-rendering, so that motion parallax is realized; and finally, intelligently fusing the glare compensation layer and the perspective correction layer, coding and outputting to a screen. The system correspondingly comprises an environment perception module, a glare compensation module, a perspective rendering module and a fusion coding module. The naked-eye 3D large-screen display method effectively inhibits ambient light interference, improves the quality and immersion of a stereoscopic picture under different visual angles, and is suitable for naked-eye 3D large-screen display under outdoor and complex illumination environments.

The invention relates to the technical field of optical performance testing, in particular to an LED lamp optical performance testing method which comprises the steps that the color coordinate position of each LED lamp at each moment and the standard color coordinate position of a standard LED lamp are collected; obtaining overall color coordinate data; constructing standard visual sensitive data and an approximate Mecanum ellipse; calculating the visual perception weight of the color coordinate position of each LED lamp at each moment; determining the sensing offset distance of each LED lamp at each moment; training the prediction model; therefore, the optical performance of the LED lamp can be tested. The invention aims to consider the perception condition of human eyes on chromaticity and the deviation condition of the color coordinate position of the LED lamp, and the accuracy of the test result is improved.

A system and method for providing sensory relief from distraction, inattention, anxiety, fatigue, and / or sensory issues to a user in need thereof, the user may be autistic / neurodiverse or neurotypical. The system may be configured to obtain user sensory sensitivity data indicative of the user's visual, sonic, or interoceptive sensitivity, use at least the user sensory sensitivity data to determine mediation data corresponding to a user-specific sensory threshold and a user-specific mediation, store the sensory threshold and mediation data, record sensory input stimuli to the user using one or more sensors, compare the sensory input stimuli to the sensory threshold, and determine a mediation to be provided to the user based at least on the mediation data in response to comparing the sensory input stimuli to the sensory threshold, the mediation configured to provide the user with relief from distraction, inattention, anxiety, fatigue, or sensory issues.

The invention provides a paperless conference management system based on a cloud platform, and relates to the technical field of conference information management.The paperless conference management system comprises the steps that visual parameters such as the pupil light reflection rate and the pupil adaptation time of a user are collected, and a dynamic light adaptation curve is generated in combination with the brightness contrast of a conference environment; the curves are pushed to conference equipment through a cloud platform, so that customized screen brightness adjustment is realized; a personalized light adaptation scheme is provided according to the visual sensitivity index of the user, and meanwhile, the overall visual coordination in a multi-user environment is emphasized; therefore, not only is the conference experience optimized, but also the transient reading disorder caused by the light adaptation lag is obviously reduced, and the definition of information presentation and the fluency of the conference are improved.

The present application proposes an image watermark generation method, an image watermark generation device, and a computer storage medium. The image watermark generation method includes: obtaining the original latent features of the original image; fusing the watermark information of the same size as the original latent features with the original latent features to obtain fused latent features; obtaining the pixel-level visual sensitivity mask parameters of the original image; adjusting the watermark intensity of the fused latent features using the pixel-level visual sensitivity mask parameters to obtain the adjusted latent features; generating an image watermark based on the adjusted latent features; and generating a watermarked image based on the image watermark and the original image. Through the above-mentioned image watermark generation method, the pixel-level visual sensitivity mask parameters are used to adaptively adjust the watermark embedding strength, thereby achieving global coordinated adaptation of the watermark energy distribution and the image visual characteristics, and significantly improving the robustness of the watermark against complex attacks.

The invention provides a data encoding method, a data decoding method, terminal equipment and a server, relates to the technical field of electronic information, and can solve the problem of low image encoding processing efficiency. According to the specific technical scheme, the coding parameter of each macro block is dynamically adjusted according to the visual sensitive value of the image content, so that the characteristics of a human visual system can be more effectively utilized, the visual quality is maintained or improved, the coding time length and the code stream size are reduced, and the transmission speed is improved.

An electronic device may have a display for displaying image content. Head-mounted support structures in the device may be used to support the display. The electronic device may have an eye monitoring system that detects eye saccades and eye blinks. Control circuitry in the electronic device may coordinate operation of the display with periods of suppressed visual sensitivity that are associated with the saccades and blinks. By making adjustments to display circuitry and image content during periods of suppressed visual sensitivity, potentially visually obtrusive changes to displayed images can be hidden from a user of the electronic device. Adjustments to display operation may help reduce burn-in effects, may help reduce power consumption, and may otherwise improve device performance.

The present invention provides a light-absorbing composition, a light-absorbing film, and an optical filter that are advantageous in terms of reproducing human visual sensitivity, particularly in terms of light absorption characteristics in the short-wavelength region, as well as a method for manufacturing such a light-absorbing film. [Solution] The light-absorbing composition according to the present invention contains an ultraviolet absorber having a hydroxyl group and a carbonyl group in its molecule, and a metal component. At least a portion of the metal component is bonded to an organic oxy group.

The application discloses a Mini LED area dynamic light adjusting method, comprising the following steps: step 1, obtaining a gray image of a current frame image and determining a backlight partition of a Mini LED; carrying out a viewpoint tracking to obtain a gaze point of each backlight partition on a Mini LED backlight panel; step 2, based on a human eye foveal vision characteristic, each backlight partition is divided into a gaze area and a peripheral area respectively; the initial maximum backlight value and the initial average backlight value of the gaze area and the peripheral area are calculated; step 3, based on a human eye foveal visual sensitivity characteristic curve, a correction coefficient is determined, and the initial maximum backlight value of the gaze area and the initial average backlight value of the peripheral area are corrected by using the correction coefficient to obtain a final backlight value; step 4, based on the final backlight value of the gaze area and the peripheral area, the backlight value of the corresponding backlight partition is adjusted. The application can reduce the visual error of display and improve the human eye visual effect.

An electronic device may have a display for displaying image content. Head- mounted support structures in the device may be used to support the display. The electronic device may have an eye monitoring system that detects eye saccades and eye blinks. Control circuitry in the electronic device may coordinate operation of the display with periods of suppressed visual sensitivity that are associated with the saccades and blinks. By making adjustments to display circuitry and image content during periods of suppressed visual sensitivity, potentially visually obtrusive changes to displayed images can be hidden from a user of the electronic device. Adjustments to display operation may help reduce bum-in effects, may help reduce power consumption, and may otherwise improve device performance.

The invention discloses a method for predicting illegal road occupation on a curve, and relates to the technical field of road safety prediction. The method comprises: constructing a visual road linear layer to extract the road linear shape perceived by a driver; constructing a driver dynamic visual layer to lay a foundation for quantifying the construction of the driver's visual characteristics; constructing a visual semantic layer to segment the visual road environment and extract semantic parameters in the visual road environment; constructing a visual depth layer to extract depth information of the visual road environment; establishing a visual sensitivity layer to extract a sensitive distance; obtaining whether a vehicle is speeding, and in addition obtaining parameters such as the driver's age, driving experience and gender; processing the parameters extracted before the driver passes the curve by an XGBoost machine learning algorithm, so as to predict whether the driver will illegally occupy the road when passing the curve of a rural two-lane road; the invention uses a highly interpretable prediction model to provide a reference for optimizing the road environment design and reduce the occurrence of illegal road occupation on the curve section of rural roads.

This application belongs to the field of image processing and relates to a video processing method, apparatus, computer equipment, and storage medium. The method includes the following steps: preprocessing the video data to be processed to obtain initial video data; performing three-level wavelet decomposition on the initial video data to obtain watermark embedding location information; calculating the visual sensitivity of the initial video data and dividing the initial video data into regions based on the visual sensitivity to obtain video region information; extracting features from the initial video data to obtain comprehensive video features; encrypting preset watermark information to obtain encrypted watermark information; determining the watermark embedding strength based on the video region information, and embedding the watermark into the initial video data based on the comprehensive video features, encrypted watermark information, watermark embedding location information, and watermark embedding strength. This application can achieve watermark embedding of initial video data to obtain high-quality and effective video data.

Embodiments of the present disclosure provide a solution for video processing. A method for video processing is presented. The method comprises: for conversion between a target frame of a point cloud sequence and a bit stream of the point cloud sequence, applying downsampling to a point according to the importance of the point in the target frame, the importance of the point being associated with the visual sensitivity of a human eye to the point; obtaining a final sampling point cloud by combining the plurality of down-sampled points, where a first set of down-sampled points are down-sampled based on importance and a second set of down-sampled points are down-sampled based on structure retention information; and performing conversion based on the final sampling point cloud.

The application discloses a voltage flicker acceleration detection method, a system and a medium, and relates to the technical field of voltage flicker detection.The voltage flicker acceleration detection method comprises the following steps: squaring a voltage signal to be detected to obtain a voltage square signal; calculating the direct current bias of the voltage square signal; subtracting the direct current bias of the voltage square signal from the voltage square signal to obtain an optimized voltage signal; and performing demodulation filtering, visual sensitivity weighting filtering, squaring, smoothing weighting filtering and statistical processing on the optimized voltage signal to obtain a voltage flicker detection result.The application aims to solve the problem of slow convergence speed of the demodulation filtering of the current IEC flicker detection method, which affects the accuracy of flicker detection, and improve the accuracy of detection while ensuring the speed of flicker detection.

The invention provides a video frame coding method and device, equipment and a medium, and relates to the field of artificial intelligence cloud computing, in particular to image processing and video coding scenes. The specific implementation scheme is as follows: performing sensitive area identification on a video frame to obtain a target area; according to a basic coding strategy, the overall basic code rate of the video frame, and the area ratio, visual sensitivity and texture complexity of the target area, code rate allocation is carried out on the target area, and a code rate allocation result of the target area is obtained; based on the code rate distribution result, performing quantization parameter adjustment on a target area and a non-target area in the video frame to obtain differential coding parameters; and adopting a video encoder to encode the video frame according to the differential encoding parameters. According to the technical scheme, the video picture quality can be improved.

The invention relates to the technical field of molecular biology, in particular to an LAMP (Loop-Mediated Isothermal Amplification) double-signal visual detection indicator based on SYTO 9 and application of the LAMP double-signal visual detection indicator. SYTO 9 is adopted as a fluorescent indicator, a phenol red and hydroxynaphthol blue mixture is adopted as a color indicator, and it is found that after SYTO 9 is added, the visual sensitivity is increased from 20 cfu / reaction to 2 cfu / reaction; by means of the method, the low copy number can be detected, the false positive rate is reduced, and the problem that weak positive caused by too low template concentration is difficult to distinguish during photographing retention or visual distinguishing can be perfectly solved. The color indicator provided by the invention can simultaneously use a direct visual method and a real-time fluorescence amplification method, has the characteristics of high resolution, high sensitivity and low false positive rate, realizes the effect of judging whether a sample is positive or negative by naked eyes in combination with double signals of a fluorescence amplification curve, and is high in judgment result accuracy.

A method and device for reducing power consumption of display devices proposes to reduce the total amount of light emitted in a perceptually indistinguishable manner based on the on the human visual sensitivity at the position of a pixel. The visibility of the processing can be made to remain provably below threshold, whereas other techniques may not be able to provide such proof. This is achieved by determining a minimum detectable modulation or a corresponding just-noticeable difference based on frequency intensity information for a pixel representative of how much there is of a set of frequencies at the pixel and a contrast sensitivity function representative of a model of human vision that predicts which contrasts at which frequencies are visible to the human eye. Pixel values may be reduced based on this minimum detectable modulation or just-noticeable difference. The contrast sensitivity function may be given by Barten's model and the frequency intensity information may be based on a hierarchical map built using a discrete wavelet transform or a continuous wavelet transform.

This invention discloses a method and system for optimizing stereoscopic vision on naked-eye 3D large screens, specifically relating to the field of naked-eye 3D vision optimization technology. The method includes: real-time perception of ambient light and viewer position through multi-sensor fusion to establish an ambient light field model; prediction of glare crosstalk noise based on physical simulation, and adaptive suppression and compensation combining human visual sensitivity and image content features; dynamic generation of a virtual camera based on the viewer's real-time binocular positions, and real-time re-rendering using a lightweight neural radiation field renderer to achieve motion parallax; finally, intelligent fusion and encoding of the glare compensation layer and perspective correction layer, and outputting the result to the screen. The system includes four main modules: environmental perception, glare compensation, perspective rendering, and fusion encoding. This invention effectively suppresses ambient light interference, improves the quality and immersion of stereoscopic images from different viewing angles, and is suitable for naked-eye 3D large-screen displays in outdoor and complex lighting environments.

The invention provides a rail transit landscape influence quantitative analysis method and system based on spatial data analysis, and relates to the technical field of environmental protection engineering.The method comprises the steps that a visual visibility index is calculated based on spatial relation data; obtaining design attribute data of the rail transit line, and calculating an environmental compatibility index based on the design attribute data; obtaining a visual elevation angle between the rail transit line and the landscape sensitive target and an occurrence probability of a building in a vision field of the landscape sensitive target so as to calculate a visual sensitivity index; based on the visual visibility index, the environmental compatibility index and the visual sensitivity index which are endowed with the weights, calculating to obtain a comprehensive evaluation index; and matching the comprehensive evaluation index with the influence grade interval to obtain a landscape influence processing scheme of the rail transit line. According to the method, the rail transit landscape influence intensity can be quantitatively evaluated, the early-stage investigation investment of a project and the risk of later-stage engineering scheme adjustment are reduced, and the economic applicability is high.

According to the human eye local visual sensitivity difference image quality evaluation method, attenuation wave variation is performed on the reference image and the distorted image, the high-frequency azimuth difference quantity is introduced, and four-stage attenuation wave variation is performed on the reference image and the distorted image by considering the balance of the accuracy and the calculation complexity. The importance of the base element and the difference quantity is highlighted; secondly, when the BEA of the high-frequency component is calculated, the local orientation difference quantity serves as a window weighted value, detail changes of the image are captured through high-frequency information, and a more reasonable and effective physiological visual effect is obtained; thirdly, when the final mass fraction of the distorted image is calculated, the nonlinear band-pass property of the CSF and the octave relation of attenuation wave variation are utilized; experimental results show that the HFD-BEA shows great superiority in evaluation of overall performance, cross distortion and single distortion types, and the evaluation performance of the wn is also good. The algorithm complexity is close to that of MSBEA, and the overall performance evaluation has obvious advantages compared with the prior art.

Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: applying, for a conversion between a target frame of a point cloud sequence and a bitstream of the point cloud sequence, down-sampling on points in the target frame according to importance of the points, wherein the importance of the points is associated with a human eye visual sensitivity to the points; obtaining a final sampled point could by combining a plurality of down-sampled points, wherein a first set of down-sampled points is down-sampled based on importance, and a second set of down-sampled points is down-sampled based on structure-preserving information; and performing the conversion based on the final sampled point cloud.

The invention discloses a single-tube dual-mode visual nucleic acid detection method. By designing an asymmetric V-type PCR nucleic acid amplification scheme, a large number of target single chains are generated in a short time, Cas12a-mediated cleavage reaction gets rid of the limitation of PAM sites in the excitation stage through single chain activation, and meanwhile, the single chains can generate stronger fluorescence signals compared with traditional double-chain product activation. In addition, the detection time is shortened by 50%, the visual sensitivity of the detected naked eye color of the bacteria can reach 10 CFU / mL, and the visual sensitivity under fluorescence excitation can reach 1 CFU / mL. Paraffin oil is adopted for layering, and the whole reaction is integrated in a single tube. The experimental steps are simplified, and aerosol pollution in the traditional transfer process is effectively avoided. Meanwhile, visual detection of two modes of naked eye color and fluorescence is realized in a single tube, the detection result is consistent with that of a qPCR standard method, and further advantages are achieved.

The invention relates to a vehicle control method and a vehicle. The driving state of a vehicle and the visual sensitivity of a user can be obtained; visual prompt information is output, the visual attribute of the visual prompt information is determined according to the driving state and / or the visual sensitivity, and the visual prompt information is used for relieving carsickness. The visual attribute of the output visual prompt information is determined by considering the visual sensitivity of the user and combining the driving state of the vehicle, so that the output visual prompt information can be associated with the driving state of the vehicle, the personalized requirement of the user for the visual attribute of the visual prompt information can be met, and the anti-carsickness effect is improved.

The application discloses a defect detection method and program product based on improved color difference calculation, and belongs to the field of computer vision and industrial detection. The application is based on CIELAB color space and CIEDE2000 color difference model, through blue hue compensation, visual sensitivity weighting, brightness self-adaption, non-linear mapping and normalization processing, so that the color difference result is more in line with the human eye perception and quality grading requirement under the target detection scene, and a stable, comparable standardized score is formed, and the score is used for detecting defects such as color deviation, color spots, color blocks, uneven coating, printing color deviation or display abnormality.

This utility model belongs to the technical field of pig disease prevention equipment, and particularly relates to a long-pole blindfolded pig-catching device for disease prevention. Addressing the problem that existing devices do not obstruct the pig's vision, leading to heightened visual sensitivity and heightened alertness to environmental changes, resulting in panic, severe stress, and continued struggle even when restrained, easily causing injury and increasing health risks, the following solution is proposed: a long-pole blindfolded pig-catching device for disease prevention, including a connecting block with a steel band fixedly mounted on its surface. The advantages of this utility model are: the device is easy to operate; the control lever and U-shaped clamp can quickly tighten the steel band; the connecting rod, adjusting rod, and extension rod are detachable; a single person can handle different scenarios, reducing labor costs and complexity; a dark cloth bag simultaneously blindfolds the pig, a sponge ring provides cushioning, and a spring provides elastic locking, reducing stress and injury to the pig; the steel ring is adjustable to fit pigs of different sizes; one device meets diverse needs.

An eye exam can be performed using an electronic device in a virtual environment to determine visual susceptibility to digital screen use. The electronic device can execute a visual assessment application and display a user interface to create a 3D virtual environment. Visual content can be continuously displayed for an extended duration of time with predefined display parameters associated with a screen usage in the 3D virtual environment. The electronic device can obtain a stream of sensor data measured by the one or more sensors and determine a plurality of sequential user responses to the visual content based on the stream of sensor data. The electronic device can apply at least a screen usage prediction model to generate a screen usage guidance profile for the user based on the plurality of sequential user responses.

To provide a display device with non-contact input function.SOLUTION: The display device comprises a first light-emitting device performing display, a second light-emitting device emitting detection light, and a light receiving device. The light receiving device has a function of detecting light emitted by the second light-emitting device and reflected on a target object. Near infrared without visual sensitivity is used for light emitted by the second light-emitting device. Therefore, even when high luminance light is emitted from a display section, visibility of displaying is not affected. In addition, emission of the light at high luminance allows a target object located far away from the display device to be detected with high sensitivity.SELECTED DRAWING: Figure 1

The application discloses a large visual language model illusion alleviation method and device, equipment, medium and product, relates to the field of large visual language model, and the method extracts features from an input image to obtain image features; image global feature pooling and information coding operations are performed on the image features to obtain global visual feature vectors and image codes; a visual sensitivity mask is obtained according to the global visual feature vectors and a weight matrix of an upper projection layer in a preset transformer layer; information coding is performed on input text to obtain text codes; the text codes, the image codes and the visual sensitivity mask are input into a backbone network of a large visual language model, the visual sensitivity mask is used as the weight of a visual sensitivity neuron in the preset transformer layer, and a prediction result is obtained. The application can alleviate knowledge conflicts and inhibit illusions, and improve the illusion inhibition efficiency of the large visual language model.

The utility model belongs to the technical field of visual function training, and particularly discloses a myopia visual function checking and training device which comprises a lamp box and a box body, the box body is located in the lamp box, a visual chart board is arranged on one side of the box body, extending assemblies are arranged in the box body and on the two sides of the box body, and an adjusting assembly is arranged in the lamp box. The extension assembly comprises extension plates, extension tables are arranged on one sides of the two extension plates, the training screen can be expanded through the extension assembly, more sighting marks of different specifications can be displayed after the screen is expanded, the interval between the sighting marks can be adjusted more flexibly, and therefore the eyes can be trained in a richer visual stimulation environment, and the training effect is better. The lamp box is simple in structure and convenient to use, the training effect of improving the visual sensitivity is facilitated, binocular visual function training can be carried out, different visual stimuli often need to be presented to the eyes at the same time in the binocular visual function training, and the extended lamp box screen can better display complex binocular sighting marks such as stereoscopic sighting marks and fusion sighting marks.