45 results about "Foveola" patented technology

Catadioptric single camera systems capable of sampling the lightfield of a scene from a locus of circular viewpoints and the methods thereof are described. The epipolar lines of the system are radial, and the systems have foveated vision characteristics. A first embodiment of the invention is directed to a camera capable of looking at a scene through a cylinder with a mirrored inside surface. A second embodiment uses a truncated cone with a mirrored inside surface. A third embodiment uses a first truncated cone with a mirrored outside surface and a second truncated cone with a mirrored inside surface. A fourth embodiment of the invention uses a planar mirror with a truncated cone with a mirrored inside surface. The present invention allows high quality depth information to be gathered by capturing stereo images having radial epipolar lines in a simple and efficient method.

A system or method for measuring human ocular performance can be implemented using an eye sensor, a head orientation sensor, and an electronic circuit. The device is configured for measuring vestibulo-ocular reflex, pupillometry, saccades, visual pursuit tracking, vergence, eyelid closure, dynamic visual acuity, retinal image stability, foveal fixation stability, focused position of the eyes or visual fixation of the eyes at any given moment and nystagmus. The eye sensor comprises a video camera that senses vertical movement and horizontal movement of at least one eye. The head orientation sensor senses pitch and yaw in the range of frequencies between 0.01 Hertz and 15 Hertz. The system is implemented as part of an impact reduction helmet that comprises an inner frame having interior pads configured to rest against a person's head and one or more shock absorption elements attached between the inner frame and the spherical shell that couple the spherical shell to the inner frame. The spherical shell has a circular geometry, that when viewed horizontally at its horizontal midplane, includes a center point that is the rotational center of the spherical shell. The one or more shock absorption elements are sized to provide greater spacing between the inner frame and the spherical shell at the sides and rear of the spherical shell than at the front of the spherical shell. The one or more shock absorption elements are sized to configure the alignment of the rotational center of the spherical shell with the proximate rotational center of the wearer's head.

Lenses and methods are provided for improving peripheral and / or central vision for patients who suffer from certain retinal conditions that reduce central vision or patients who have undergone cataract surgery. The lens is configured to improve vision by having an optic configured to focus light incident along a direction parallel to an optical axis at the fovea in order to produce a functional foveal image. The optic is configured to focus light incident on the patient's eye at an oblique angle with respect to the optical axis at a peripheral retinal location disposed at a distance from the fovea, the peripheral retinal location having an eccentricity between −30 degrees and 30 degrees. The image quality at the peripheral retinal location is improved by reducing at least one optical aberration at the peripheral retinal location. The method for improving vision utilizes ocular measurements to iteratively adjust the shape factor of the lens to reduce peripheral refractive errors.

Various embodiments set forth a foveated display system and components thereof. The foveated display system includes a peripheral display module disposed in series with a foveal display module. The peripheral display module is configured to generate low-resolution, large field of view imagery for a user's peripheral vision. The foveal display module is configured to perform foveated rendering in which high-resolution imagery is focused towards a foveal region of the user's eye gaze. The peripheral display module may include a diffuser that is disposed within a pancake lens, which is a relatively compact design. The foveal display module may include a Pancharatnam-Berry Phase grating stack that increases the steering range of a beam-steering device such that a virtual image can be steered to cover an entire field of view visible to the user's eye.

Described is a system for visual activity recognition. In operation, the system detects a set of objects of interest (OI) in video data and determines an object classification for each object in the set of OI, the set including at least one OI. A corresponding activity track is formed for each object in the set of OI by tracking each object across frames. Using a feature extractor, the system determines a corresponding feature in the video data for each OI, which is then used to determine a corresponding initial activity classification for each OI. One or more OI are then detected in each activity track via foveation, with the initial object detection and foveated object detection thereafter being appended into a new detected-objects list. Finally, a final classification is provided for each activity track using the new detected-objects list and filtering the initial activity classification results using contextual logic.

A method of transporting foveal image data is disclosed. A host device receives image data from an image source and renders a full field-of-view (FFOV) image using the image data. The host device further identifies a foveal region of the FFOV image and renders a foveal image corresponding to the foveal region using the image data. More specifically, the foveal image may have a higher resolution than the foveal region of the FFOV image. The host device may then transmit each of the foveal image and the FFOV image, in its entirety, to a display device. For example, the host device may concatenate the foveal image with the FFOV image to produce a frame buffer image, and then transmit the frame buffer image to the display device.

A system and / or method for measuring a human ocular parameter comprises a human-wearable face shield which has an eye sensor, a head orientation sensor, and an electronic circuit, and a face shield. The eye sensor comprises a video camera that measures horizontal eye movement, vertical eye movement, pupillometry, and / or eyelid movement. The head orientation sensor measures pitch and / or yaw of the wearer's face. The electronic circuit is response to the eye sensor and the head orientation sensor and measures an ocular parameter such as vestibulo-ocular reflex, ocular saccades, pupillometry, pursuit tracking during visual pursuit, vergence, eye closure, focused position of the eyes, dynamic visual acuity, kinetic visual acuity, virtual retinal stability, retinal image stability, foveal fixation stability, or nystagmus.

A method of transporting foveal image data is disclosed. A host device receives image data from an image source and renders a full field-of-view (FFOV) image using the image data. The host device further identifies a foveal region of the FFOV image and renders a foveal image corresponding to the foveal region using the image data. More specifically, the foveal image may have a higher resolution than the foveal region of the FFOV image. The host device may then transmit each of the foveal image and the FFOV image, in its entirety, to a display device. For example, the host device may concatenate the foveal image with the FFOV image to produce a frame buffer image, and then transmit the frame buffer image to the display device.

The invention relates to ophthalmology, in particular to the surgical treatment technique of macular holes at the early stages without vitrectomy. The method for treating stage 1 macular hole without vitrectomy comprises peeling the posterior hyaloid membrane away from the foveola, wherein an ophthalmological instrument is inserted through the vitreous body until it comes into contact with the posterior hyaloid membrane in the macular area, the posterior hyaloid membrane then being gripped by said instrument and peeled away from the foveola, in accordance with the invention, and after the contact between the instrument and the posterior hyaloid membrane an opening is made therein, whereby the edge of the opening is then used to lift the posterior hyaloid membrane and peel it away from the foveola until the layers are separated; wherein the instrument used is an ophthalmological membrane spatula comprising a handle 1 and a pointed working part 2 with a tip 3 shaped as a hook. The improved grip of the posterior hyaloid membrane, better visual control and maintaining the hold of said membrane continuously through the manipulations until the peeling from the foveola is complete, made it possible to reduce the trauma associated with surgical management of stage 1 macular hole without vitrectomy and to decrease the number of related complications.

An apparatus and system for a display screen for use in near-eye display devices. Small light emitting devices are placed behind a plurality of light-directing beads. The light emitting devices and light-directing beads for a display device and system placed in front of a user for near-eye display. This allows a user to experience near-eye display with greater resolution, wider field of view and faster frame rate. Other embodiments are described herein.

The present invention proposes a comprehensive visual training system based on biological mechanism stimulation and cooperation, which relates to the technical field of visual training equipment, and solves the problem of the lack of integrated central vision of the fovea, peripheral vision of the wide-angle field of view and the comprehensive visual training of auxiliary coordination between the two The system or method, which leads to the problem of limited human visual function, utilizes the biostimulus model target generator to generate a visual biological information stimulation model, and realizes the dynamic between ego-centered spatial visual perception and object-centered spatial visual perception Balance; use the contrast sensitivity transformation module to transform the contrast sensitivity of the interactive target visual biological information stimulation model, change the contrast sensitivity dependence of the peripheral vision input on the central vision input during the comprehensive vision training process, and affect the human eye's central vision and Peripheral vision and coordination training at the same time.

A method for implementing a graphics pipeline. The method includes generating a plurality of bones for an object defining positioning relationships between the bones. The method includes determining a subsystem of bones from the plurality of bones for the object. The method includes determining a foveal region when rendering an image of the virtual scene including the object, wherein the foveal region corresponds to where an attention of a user is directed. The method includes determining that at least one portion of the object is located in a peripheral region for the image. The method includes animating the object by applying a transformation to the subsystem of bones.

A method for implementing a graphics pipeline. The method includes building a first shadow map of high resolution, and building a second shadow map based on the first shadow map of lower resolution. The method includes determining a light source affecting a virtual scene, and projecting geometries of objects of an image of the virtual scene onto a plurality of pixels of a display from a first point-of-view. The method includes determining a foveal region when rendering the image, wherein the foveal region corresponds to where an attention of a user is directed. The method includes determining a first set of geometries is drawn to a first pixel, determining the first set of geometries is in shadow based on the light source, and determining the first set of geometries is outside of the foveal region. The method includes rendering the first set of geometries using the second shadow map.

The invention discloses a 3P super wide-angle lens, comprising: a first lens, a second lens, and a third lens arranged sequentially from the object side to the image side, the first lens is a negative lens, and the surface of the first lens close to the object side is P1R1, The center of the surface P1R1 is concave toward the object side, and the surface of the first lens close to the image side is called P1R2. The center of the surface P1R2 is concave toward the image side, and then turns concave toward the image side when it is close to the edge. The second lens is a positive lens. The surface of the second lens close to the object side is P2R1, the center of the surface P2R1 is convex to the object side, the surface of the second lens P2 close to the image side is called P2R2, the center of the surface P2R2 is convex to the image side, the core thickness is T2, and the third lens It is a positive lens, the surface of the third lens close to the object side is P3R1, and the center of the surface of P3R1 is convex to the object side, the total focal length of the 3P super wide-angle lens is f, and the super wide-angle lens satisfies the condition: 0.85