24 results about "Visual sensitivity" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

This invention proposes a differentiated collaborative animal repelling system and method for substations. The system includes a front-end detection module that monitors the substation's monitoring area, collecting the target's location, movement trajectory, morphological features, sound characteristics, thermal imaging information, and image information. An AI fusion control module acquires the target's location, movement trajectory, and thermal imaging information, sequentially determining whether the target has invaded, whether the invading target is an animal, and the initial target classification result. After determining that an animal has invaded the substation area, a preliminary repelling strategy is determined based on the initial classification result. The front-end detection module then acquires the animal target's morphological features, sound characteristics, and image information again, and based on these, determines the animal target's species type. Furthermore, based on the animal target's species type and the species repelling strategy database containing the animal target's visual sensitivity, acoustic sensitivity, and auditory fear sources, a final repelling strategy is determined for the current animal target. The repelling execution module then repelles the animal target according to the preliminary and final repelling strategies determined by the AI ​​fusion control module.

Method for objectively assessing a level of sensitivity to a light entering at least one eye of a subject, comprising steps: a) measuring and recording a cortical activity signal of a cortex of a head of the subject while the at least one eye of the subject receives a given light intensity during a given measuring and recording time, b) processing the recorded cortical activity signal to obtain a useful signal and to identify, from the useful signal, a specific cortical signature indicative of a sensitivity to light, c) assessing whether the specific cortical signature correlates with a hypo-sensitivity to light or a hyper-sensitivity to light state of the subject by comparing the specific cortical signature to a predefined threshold parameter of the specific cortical signature, wherein the given light intensity is less or equal to 50 lux and that the given measuring and recording time is less than or equal to 350 ms.

The invention relates to a visibility meter brightness calibration method and system, a vision measurement method and system and a storage medium, and the method comprises the steps: displaying a calibration image in a visibility meter, obtaining a plurality of gray values when the calibration image is subjected to gray change, and obtaining a brightness value corresponding to each gray value; establishing a first mapping relation from the gray values to the brightness values according to the plurality of gray values and the corresponding brightness values; determining a second mapping relation from the brightness value to a visual sensitivity threshold value of the perimeter; according to the second mapping relation and the first mapping relation, gray values of the perimeter under different visual sensitivity thresholds are determined, and based on the gray values of the perimeter under different visual sensitivity thresholds, a third mapping relation for converting the gray values into the visual sensitivity thresholds is established; and the brightness calibration of the VR perimeter is realized.

The invention relates to the technical field of display adjustment, in particular to a liquid crystal display energy-saving control method and system and a medium. The method comprises the following steps: acquiring pixel gray scale data of a current frame, and respectively counting gray scale brightness change conditions and gray scale histograms in a pre-divided display area; simultaneously collecting ambient light intensity and current refresh frequency; judging the display content type of each display area based on the gray scale brightness change condition and the gray scale histogram, and determining a visual sensitivity coefficient corresponding to each display area; according to the display content type of each display area and the current refresh frequency, constructing an area content perception energy consumption evaluation quantity; and solving a target backlight brightness ratio and a target gray scale compression ratio of each display area according to the area content perception energy consumption evaluation quantity, and transmitting solving results to a controller of the liquid crystal display screen. Dynamic adjustment of backlight brightness and gray scale compression of the liquid crystal display screen is achieved, and the overall energy consumption is remarkably reduced on the premise that the visual display effect is guaranteed.

The application discloses a voltage flicker measurement and evaluation method and device based on DSP, and the method comprises the following steps: S1, sampling the fluctuating voltage signal according to the set sampling frequency and sampling interval, and calculating the root mean square value of the sampling signal by using the equal interval method to obtain the voltage fluctuation sampling point; S2, judging whether the sampling point number meets the condition of calculating the instantaneous visual sensitivity, if yes, executing step S3, otherwise returning to S1; S3, converting the voltage fluctuation sampling point into a voltage signal suitable for the measurement circuit; S4, performing the envelope line extraction operation on the voltage signal to obtain the input signal instantaneous flicker visual sensitivity value without verification; S5, after verifying the gain value K in the flicker model by using the IEC verification method, performing statistical analysis on the input signal instantaneous flicker visual sensitivity value to obtain the short-time flicker severity value and the long-time flicker severity value, so that the basic requirements of IEC are met, the resource cost is reduced, and the implementation cost is lowered.

The application discloses a tone mapping algorithm based on multi-scale WLS filtering fusion, and belongs to the field of image enhancement. High dynamic range images (HDR) cannot be displayed on commonly used low dynamic range (LDR) display devices due to higher dynamic range and bit depth, and thus need to be subjected to tone mapping. The tone mapping algorithm based on multi-scale WLS filtering fusion comprises the following steps: S1, inputting a high dynamic range image, calculating the luminance graph of the input image, and converting to a logarithmic domain; S2, using WLS filters of different scales to filter the luminance graph to obtain a base layer, using the base layer to realize multi-scale detail layer extraction, then weighting and fusing the details of different scales with the base layer to realize detail enhancement; S3, according to a human visual sensitivity model, adjusting the dynamic range of the fused image; and S4, color reconstruction, to obtain a final LDR image.

The invention discloses a composite watermark low-coupling embedding and efficient identification method based on wavelet transform. The method comprises the following steps: carrying out wavelet transform on a carrier image and dividing sub-band priorities based on visual sensitivity; carrying out differential preprocessing on the copyright watermark, the authentication watermark and the content description watermark; embedding the watermarks into the corresponding sub-bands according to the priorities and the security requirements, and performing noise suppression; generating a watermark-containing image through wavelet inverse transformation; and extracting a verification watermark by adopting a hierarchical cascade identification architecture, and dynamically adjusting a matching threshold value according to an attack type. According to the method, the robustness of the watermark when facing noise, compression and geometric attacks is improved, the watermark embedding capacity is increased, and the recognition accuracy and efficiency are remarkably improved.

To provide an ophthalmic information processing program and an ophthalmic device which make it easy for a user to intuitively understand the state of tissue of a subject eye.SOLUTION: A processor of an ophthalmic device is caused to perform: a measurement data acquisition step of acquiring visual sensitivity distribution data which is measurement data for a subject eye with a static perimeter and represents two-dimensional distribution of visual sensitivity data for the subject eye, and second distribution data representing two-dimensional distribution of second measurement data acquired for a region overlapping with a region of the visual sensitivity distribution data and having a measurement target different from that of the visual sensitivity data; and a superimposition map generating step of generating a superimposition map which is a superposition of a visual sensitivity map based on the visual sensitivity distribution data and an isopleth map based on the second distribution data made of wire frames with a closed section surrounded by one or more isopleth not filled in.SELECTED DRAWING: Figure 4

The application provides a safe passage lamp lighting detection method, which comprises the following steps: S1, acquiring an image containing a safe passage lamp; S2, performing safe passage lamp detection on the image, acquiring the position of the safe passage lamp in the image, and cutting out a first safe passage lamp image from the image according to the acquired position of the safe passage lamp in the image; S3, transforming the first safe passage lamp image into an HSV space to obtain an HSV safe passage lamp image, acquiring a safe passage lamp mark from the HSV safe passage lamp image, and calculating the result of the safe passage lamp mark according to a green visual sensitivity function, wherein when the result is greater than a preset value, it indicates that the safe passage lamp is lit. The application uses the green visual sensitivity function to identify whether the safe passage lamp is lit, which is fast and can reach about 7 ms per frame on average.