24 results about "Pupil size" patented technology

The invention provides an endoscope sharing control method based on a human body signal and a game theory, and belongs to the field of medical instruments, and the endoscope sharing control method comprises the following steps: obtaining eyeball movement data; based on the eyeball movement data, determining eye movement control position data used for representing a manual control intention through gaze thermodynamic diagram analysis; based on the eyeball movement data, through quantitative analysis of sight, eye opening degree and pupil size, obtaining reference indexes used for representing intention integrating degree and manual control burden; machine control position data used for representing the expected moving distance of the endoscope are obtained by analyzing the position relation between a target object and the endoscope in an endoscope image, and the endoscope image is collected in real time through the endoscope; based on the machine control position data, the eye movement control position data and the reference index, determining shared control position data through a cooperative game strategy; movement of the endoscope is controlled based on the shared control position data.

A vision screening device displays visual stimuli and captures image(s) of the eye while the visual stimuli is changing over a period of time. The vision screening device uses the images to determine and monitor refractive error, ambient light level(s), pupil size, and gaze angle as the visual stimuli changes over the time period. Based on the refractive error, a determination of hyperopia and / or presbyopia is made. Based on the gaze angle and / or the pupil size, a confidence metric is determined. Based on the confidence metric and / or the determination, a recommendation for the patient is generated and displayed.

A directional illuminator for a display apparatus includes a switchable diffuser for tuning a divergence of a light beam illuminating a display panel of the display apparatus. The tunable divergence of the illuminating light beam translates into a tunable exit pupil size at the eyebox of the display apparatus, which may be matched to a pupil size of a user's eye, thus providing a configurable illumination of the eye pupil. A tiltable reflector in an optical path of the illuminating light beam may be used to shift the location of the exit pupil at the eyebox of the display apparatus.

A system and method for combining short-wave infrared (SWIR) imaging with image processing algorithms to measure pupil size dynamics in closed eye conditions, either in response to an external stimulus (such as light-induced PLR) or occurring spontaneously during sleep or anesthesia. The system, with deep learning-based analysis, can further estimate gaze direction during eye movements and achieve robust pupillometry. The system has at least one electromagnetic radiation source for radiating electromagnetic energy in a spectral range of 700 nm to 2,000 nm, and an imaging device for detecting electromagnetic energy and sending image data to a processor which performs algorithmic and deep- learning based analysis of image data to continuously track changes in pupil diameter and gaze direction over time.

A new family of intraocular lenses that exhibit an extended depth of focus or a tailored multifocality where the lenses are designed by the combination of a base lens topology and additional refractive power range described along a spiral-like grid. The variety of parameters confer a great versatility to the lens design, which allows the achievement of the best suitable features to attend to a wide range of visual demands in performing different activities. It is possible to set the parameters to specify apt-focal lenses that account for optical performance changes due to pupil aperture variations, as well as to counter positive dysphotopic effects.

The invention relates to a method for interaction between a user (1) and an AI model (2), wherein the AI ​​model (2) artificially generates acoustic content (3) and / or visual content (4) and causes the output of the acoustic content (3) via acoustic output means (5) and / or the output of the visual content (4) via visual output means (6), wherein the user (1) consumes the artificially generated content (3, 4), wherein during and / or after the output of the artificially generated content (3, 4) the pupil size of at least one eye (7) of the user (1) is detected, and wherein the acoustic content (3) and / or visual content (4) is varied by the AI ​​model (2) depending on the pupil size.

Example embodiments relate to a computer-implemented method for generating an opto-mechanical model of a camera-type eye from ocular biometry parameters that define the anatomy of the camera-type eye; wherein the ocular biometry parameters comprise at least a pupil size (224) and an iris thickness (223). The computer- implemented method comprises obtaining a predetermined iris shape (220) and a predetermined ciliary body shape (230); anchoring (201) one or more data points (221) of an outer edge of the iris shape (220) to one or more reference points of the posterior corneal surface; transforming (202) the iris shape (220) as to respect the pupil size (224) and the iris thickness (223); anchoring (203) a first portion of the outer edge (250) of the ciliary body shape to a portion of an outer edge (225) of the iris shape; transforming (204) the ciliary body shape (230) such that a second portion of an outer edge (231) of the ciliary body shape coincides with a portion of the inner scleral surface (212); and generating (205) one or more polygons (261, 262) indicative for respective zonular fibres, wherein the respective one or more polygons are defined by at least two data points located on the crystalline lens surface (240) and at least two data points located on an inner edge (232) of the ciliary body shape.

An eye-tracking system includes processing circuitry configured to acquire a first eye image captured during a first time period, including a user's pupil; determine a first pupil size based on the first eye image; acquire a second eye image captured during a second time period; determine a second pupil size based on the second eye image; acquire scene information of the scene in which the pupil is exposed, including a first brightness level, a second brightness level, and spatial information of a second region within the second time period; determine a pupil size change between the first and second pupil sizes, indicating that the user is looking at the second region; and determine reference gaze data of the user during the second time period if the pupil size change is greater than a pupil size change threshold. The invention also relates to a head-mounted device, method, computer program, and carrier.

This invention discloses a dual-layer liquid crystal display device and method for simulating pupil size, belonging to the field of human simulation displays. It comprises an integrated module coaxially stacked from an upper liquid crystal panel, a lower liquid crystal panel, a background film, a backlight panel, a fixing plate, and a main control board. The module is embedded and coplanar with the simulated human eyeball, and is fully sealed and dustproof. The upper liquid crystal panel features coaxial circular and annular light-shielding patterns, while the lower liquid crystal panel features an annular light-shielding pattern; all three are sized to be compatible. The main control board independently drives the two liquid crystal panels, achieving seamless switching between three clinical pupil states (dilated, moderate, and constricted) through the superposition of the light-shielding areas. This invention eliminates display gaps, resulting in smooth and natural pupil edges. It boasts strong structural adaptability and reliable control, significantly enhancing the realism and professionalism of emergency training.

The invention is related to an eye tracking system for determining reference gaze data of a user in a scene exposing a pupil of the user. The eye tracking system comprising processing circuitry configured to obtain a first eye image comprising the pupil of the user, the first eye image being captured during a first time period; determine, based on the first eye image, a first pupil size; obtain a second eye image comprising the pupil of the user, the second eye image being captured during a second time period; determine, based on the second eye image, a second pupil size; obtain scene information of the scene exposing the pupil of the user, the scene information comprising at least the first luminance level, the second luminance level and spatial information of the second region during the second time period; determine a pupil size change between the first pupil size and the second pupil size, the pupil size change indicating that the user is looking at the second region; determine reference gaze data of the user during the second time period, if the pupil size change is larger than a pupil size change threshold. The invention further relates to a head-mounted device, a method, a computer program and a carrier.

The application provides a pupil measuring device, which comprises a flashlight body, a plurality of annular members with gradually decreasing inner diameters are sequentially arranged inwardly on the inner wall of the inner cavity of the flashlight body, a plurality of through holes are arranged on the wall of the annular members, a sliding block is connected with a first vertical rod, a first groove for the sliding of the first vertical rod is arranged on the flashlight body, a second vertical rod is upwardly inserted into a blind hole at the lower end of the first vertical rod, a spring in a compressed state is arranged in the blind hole and connected with the upper end of the second vertical rod, a third vertical rod is vertically arranged on the slope, and a light source is arranged on the third vertical rod; when the sliding block slides leftward and rightward, the light source moves back and forth along the parallel direction of the slope, so as to correspond to the inlets of the through holes on different annular members. The flashlight type is convenient for medical staff to use, a plurality of annular members are arranged, the light source corresponds to the inlets of different annular members by adjusting the sliding block, the light source is emitted from the outlet of the annular member to form a ring shape, and the size of the pupil of a patient can be determined when the ring-shaped light coincides with the pupil of the patient.

The application relates to the technical field of medical detection equipment, and discloses an automatic pupil size recognition and determination device, which comprises a shell, a control unit and a power supply unit arranged in the shell; the shell comprises a detection head and a holding part connected with the detection head, the detection head is internally provided with an AI vision recognition module, a self-adaptive light compensation module, a distance calibration module and a main control circuit board; a light transmission window is arranged on the front end surface of the detection head; the AI vision recognition module comprises a CMOS image sensor and an AI processing chip electrically connected with the CMOS image sensor; the CMOS image sensor comprises a lens, the lens is directly opposite the central region of the light transmission window and is used for collecting a pupil image; the AI processing chip is internally programmed with a pupil feature recognition model and is used for automatically extracting pupil contour and edge features and outputting quantitative data. The application integrates AI vision, self-adaptive infrared light compensation and laser distance calibration, eliminates light interference and perspective deviation, automatically measures and calculates the real diameter of the pupil, and avoids artificial subjective errors.

The application provides a digital human model generation method and system, a computer and a storage medium, the method comprises the following steps: acquiring the position of a VR head-mounted device; determining the area where the user is located according to the position of the VR head-mounted device; judging whether the area where the user is located enters a demonstration area; if yes, acquiring a picture collected by the VR head-mounted device; judging whether the picture collected by the VR head-mounted device is matched with a target area; if yes, generating a digital human model corresponding to the target area and displaying the digital human model in the VR head-mounted device; controlling the VR head-mounted device to recognize the eyeballs of the user in real time, determining the pupil position and the pupil size, and interacting with the digital human model according to the pupil position and the pupil size, so that the digital human can provide personalized services and improve the user satisfaction.

The scheme belongs to the field of vision training, and specifically relates to a multispectral dynamic visual function training system and method. The multispectral dynamic visual function training system comprises an image acquisition module, an intelligent analysis module, a control module, a training execution module and a multispectral light source module; the image acquisition module is arranged at a corresponding position of the eye and is used for acquiring image information near the eyeball of a user, personal information of the user and a vision diagnosis result in real time, the image information comprising an eyeball movement trajectory, pupil size and morphology, corneal edge contour and eye white elasticity state; the intelligent analysis module is combined with the image information and the acquisition time of the image information. Through acquisition analysis regulation and control of a closed loop, the scheme solves the problem that the prior art lacks a real-time analysis mechanism based on eyeball images, the adaptability of a training scheme to dynamic characteristics of the eye is weak, and precise regulation and control of functions such as light nutrition supplementation and choroid stimulation cannot be achieved, and also achieves the effects of precise training, prevention and protection, synergistic improvement and improved compliance.

The utility model relates to a simulation eye based on a miniature display screen, the simulation eye comprises at least one pair of curved surface bodies similar to the physical form of the eye and an eye simulation unit used for data processing and simulation picture generation, and each curved surface body comprises a display screen provided with a screen display control unit; and the eye simulation unit is connected with the screen display control unit, so that the display screen can display a dynamic simulation effect of eyes. The simulation eye based on the micro display screen disclosed by the utility model is good in simulation effect, and not only can simulate the physical form of the appearance of the eye, such as transparent cornea and eye bulge characteristics. And the dynamic effect of eyes can be simulated, such as displaying iris style color and pupil size, simulating eyeball movement change and the like.

A display may include a waveguide, a prism that directs a pupil of light into the waveguide, and a partial reflector between the prism and the waveguide. The partial reflector may reflect a second portion of the pupil incident from within the waveguide but not a first portion of the pupil incident from within the waveguide. This may couple some of the second portion of the pupil back into the waveguide that would otherwise be lost through the prism after a first reflection off the waveguide surface opposite the prism. The partial reflector may sacrifice luminance of the light to maximize the pupil size that can be uniformly coupled into the waveguide for propagation to the eye box while minimizing the thickness of the waveguide.

A vision test can be performed for cylinder correction assessment in a virtual environment. An electronic device, such as a head-mounted display, cam display a video clip including a plurality of image frames. Each image frame can include a predefined visual stimulus having a respective orientation with respect to a focal point. While displaying the video clip, the electronic device can obtain eye image data of an eye of a user. The electronic device can collect eye response data including a pupil size from the eye image data and determine a spontaneous user response to the video clip based on eye response data. The electronic device can automatically determine one or more astigmatism parameters based on the spontaneous user response.

Method for interaction between a user (1) and an AI model (2), wherein the AI ​​model (2) artificially generates acoustic content (3) and / or visual content (4) and causes the output of the acoustic content (3) via acoustic output means (5) and / or the output of the visual content (4) via visual output means (6), wherein the user (1) consumes the artificially generated content (3, 4), wherein the pupil size of at least one eye (7) of the user (1) is recorded during and / or after the output of the artificially generated content (3, 4), wherein the acoustic content (3) and / or visual content (4) is varied by the AI ​​model (2) depending on the pupil size, and wherein at least one AI model parameter is changed and / or an input prompt is changed to vary the artificially generated content (3, 4), characterized in that the extent,with which at least one AI model parameter and / or the input prompt is changed, depending on the percentage change in pupil size.

The utility model discloses an aperture pupil pen with scales, which belongs to the technical field of aperture pupil pens and comprises a pen holder body, a pupil searchlighting component is mounted at one end of the pen holder body, an elastic sealing element is further arranged between the pupil searchlighting component and the pen holder body, and the elastic sealing element comprises two groups of rubber shells. A rubber positioning ring is further connected between the two sets of rubber shells, the pupil searchlighting assembly comprises a connecting lampshade, and a light ring scale lamp used for measuring and comparing the sizes of pupils is installed at one end of the connecting lampshade. The scale marks can be embedded and fixed to the two sides of the pen holder body through the matching performance of the metal embedded plate and the embedded groove structure and the adsorption matching between the metal embedded plate and the circular magnetic sheet, a user can take down the measuring plate on any side of the pen holder body, and the searchlighting pupil can be observed, measured and recorded; and then the measuring plate is reset into the embedded groove, so that convenient use and complete functions are ensured.

Methods, systems, and devices for estimating pupil dilation or constriction of a person viewing displayed media content, resulting from cognitive load, arousal, or engagement. Some embodiments include: obtaining ambient illuminance data corresponding to ambient light illuminance in the vicinity of a person; obtaining display screen luminance data associated with content luminance values ​​of the displayed media content and brightness of the display screen; obtaining instantaneous pupil size data corresponding to the size of one or more pupils of the person's pupils; estimating photo-induced pupil dilation or constriction caused by ambient illuminance and brightness of the display screen viewed by the person; and estimating pupil dilation or constriction caused by at least one of engagement, arousal, or cognitive load experienced by the person, at least in part on the pupil size data and the photo-induced pupil dilation or constriction.

The invention relates to a method and a warning device (100) for warning a driver (204) of a vehicle (201). In the method, images of the driver's (204) face are captured using an interior camera (101) arranged in the vehicle (201). In each image captured by the interior camera (101), the pupil size of the driver's (204) pupil is determined. A change in lighting conditions is associated with an expected pupillary light reflex of the driver (204), and the actual pupillary light reflex of the driver (204) in response to the change is determined based on the pupil sizes. If there is a significant deviation of the actual pupillary light reflex from the expected pupillary light reflex, a warning signal is issued to the driver (204).

Methods and devices enabling the study of the pupil of an eye are presented. In particular, the methods and devices relate to estimating the pupil size and its reaction to changes in light. The invention is particularly suited for dark eyes, where the contrast between pupil and iris is low. At least one eye image is acquired (110). Each acquired eye image is processed (120). The processing comprises estimation of a pupil size in the acquired image. It is furthermore determined (130) that the pupil size estimation has been completed.

The application provides a display optimization method based on HK effect, a control unit and a head-mounted display device, and is applied to the field of near-eye optical imaging technology. The display optimization method comprises the following steps: acquiring real-time eye movement data of a user, wherein the real-time eye movement data comprises pupil size and a gaze area; determining color characteristics of a to-be-optimized virtual image in the gaze area, wherein the color characteristics comprise image chroma, image hue angle and image brightness; determining perceived brightness of the user in the gaze area according to the pupil size and the color characteristics based on an HK effect model; if it is determined to perform HK effect brightness compensation according to the perceived brightness, then determining an HK effect brightness compensation amount for the gaze area based on the perceived brightness and the pupil size; and controlling an optical display unit to generate and display an optimized virtual image according to the HK effect brightness compensation amount. The application improves the fusion effect of virtual content and real environment, and meets the high-standard visual experience needs of the user in a diversified and dynamic environment.