9 results about "Right pupil" patented technology

To reliably determine the direction of the subject's gaze. [Solution] The gaze direction detection device 1 comprises a camera 10 that acquires a face image by capturing the face of subject A, and an image processing device 20 that processes the face image acquired by the camera 10 to determine the gaze direction of subject A. The image processing device 20 detects the three-dimensional positions of the right pupil, left pupil, and nose based on the face image, identifies the three-dimensional position of the intersection of a second straight line that passes through the three-dimensional position of the nose and intersects perpendicularly with a first straight line connecting the three-dimensional positions of the right pupil and the three-dimensional positions of the left pupil, and the first straight line, and determines the gaze direction of subject A using the first distance between the three-dimensional position of the intersection and the three-dimensional position of the right pupil, the second distance between the three-dimensional position of the intersection and the three-dimensional position of the left pupil, and the third distance between the three-dimensional position of the intersection and the three-dimensional position of the nose.

Systems and methods of detecting pupillary positions on a head of a subject are described. While a camera and a light source are positioned in front of the head of the subject, the camera is caused to capture image data representative of a frontal portion of the head of the subject. From the image data, a face of the subject is detected. Up to two eyes are identified from the detected face. A reflection of the light source on each identified eye is detected. A pupillary position of each identified eye is estimated based on a position of the detected light source reflection on the identified eye. One or more of interpupillary distance, left pupil distance, and right pupil distance may be determined from the estimated pupillary positions.

The invention provides a parameter adjustment method and device and 3D display equipment, and relates to the 3D display technology, and the method comprises the steps: obtaining a face image of a user through a camera; according to the face image, determining a first distance between a left eye pupil and a right eye pupil of the user in the face image and a first face geometric parameter of the user; determining an actual second face geometric parameter of the user, wherein the first face set parameter and the second face geometric parameter are used for indicating the same reference feature of the face of the user; determining a second distance between the user and the camera according to the first face geometric parameter, the second face geometric parameter and the focal length of the camera; determining the interpupillary distance of the user according to the first distance, the second distance and the focal length of the camera; and according to the interpupillary distance, adjusting an imaging parameter of the 3D display equipment so as to enable the imaging parameter to be matched with the interpupillary distance. Based on the scheme, the pupil distance of the current user can be accurately obtained and the imaging parameters can be adaptively adjusted, so that the viewing experience of the user is improved.

This stabilizes the detection accuracy when continuously detecting the positions of the left and right pupils of a subject over time. [Solution] The pupil detection device 1 comprises a camera 10 that acquires an eye image of subject A, a light source 13 provided on the camera 10, a lighting control unit 21 that controls the light intensity of the light source 13, and a calculation unit 23. The calculation unit 23 detects the right pupil based on the eye image of the first frame, the left pupil based on the eye image of the second frame following the first frame, the right pupil based on the eye image of the third frame following the first frame, and the left pupil based on the eye image of the fourth frame following the second frame. The lighting control unit 21 adjusts the light intensity at the timing of the third frame based on the brightness of the eye area corresponding to the right pupil detected from the eye image of the first frame, and adjusts the light intensity at the timing of the fourth frame based on the brightness of the eye area corresponding to the left pupil detected from the eye image of the second frame.

The application relates to an optical device and a display device, the optical device comprising a waveguide plate, on which an entrance pupil grating unit, a left pupil expansion grating unit located on the left side of the entrance pupil grating unit, a right pupil expansion grating unit located on the right side of the entrance pupil grating unit, the left and right pupil expansion grating units being mirror-symmetrical to each other with the entrance pupil grating unit as the center, left and right exit pupil grating units located below the left and right pupil expansion grating units and also being mirror-symmetrical to each other are formed; input light is diffracted by the entrance pupil grating unit to form first left and right conducting lights, the first left conducting light is diffracted by the left pupil expansion grating unit to form second left conducting light, and the first right conducting light is diffracted by the right pupil expansion grating unit to form second right conducting light; the second left conducting light is diffracted by the left exit pupil grating unit to form left output light; and the second right conducting light is diffracted by the right exit pupil grating unit to form right output light; the directions of the input light, the left output light and the right output light are consistent. The application can realize binocular display through waveguide and can improve color uniformity.

A stereoscopic Head-Up Display, HUD, is disclosed. The stereoscopic HUD comprises image sources for generating images, a pupil-tracking system configured to determine left and right pupil positions of a viewer, and an optical element positioned between the plurality of image sources and a viewing position. The optical element is configured to split an incident ray into multiple output rays at respective different angles, and configured such that output rays split from a single input ray are not incident on both left and right pupil positions at the viewing position. The stereoscopic HUD also comprises a controller configured to cause a first image source to display an image point corresponding to a first image for the left pupil and to cause a second image source to display at least an image point corresponding to a second image for the right pupil.

The medical image visualization method comprises the following steps: tracking coordinates of a left pupil and a right pupil of a viewer in a predefined space coordinate system in real time; the three-dimensional array is rendered in real time according to the coordinates of the left pupil and the coordinates of the right pupil, a rendered image corresponding to the left eye and a rendered image corresponding to the right eye are obtained, and the three-dimensional array analyzes medical image data of the anatomical structure and comprises density information or gray information of the anatomical structure at different spatial positions; and presenting the rendered image corresponding to the left eye and the rendered image corresponding to the right eye, so that the rendered image corresponding to the left eye enters the left eye of the viewer, and the rendered image corresponding to the right eye enters the right eye of the viewer. The visualization method enables a viewer to visually see a stereoscopic rendered image of an anatomical structure. The invention further provides a medical image visualization system.

The invention provides a binocular display optical device and display equipment, and relates to the technical field of waveguides, the binocular display optical device comprises a waveguide plate, the waveguide plate comprises an entrance pupil grating unit, and a left pupil expansion grating unit and a right pupil expansion grating unit which are symmetrically distributed at two sides of the entrance pupil grating unit, the left exit pupil grating unit and the right exit pupil grating unit are symmetrically distributed below the left pupil expanding grating unit and the right pupil expanding grating unit, and the entrance pupil grating unit, the left pupil expanding grating unit, the right pupil expanding grating unit, the left exit pupil grating unit and the right exit pupil grating unit all have only one grating vector; each of the left pupil-expanding grating unit and the right pupil-expanding grating unit comprises a plurality of pupil-expanding sub-areas, and the diffraction efficiency of each pupil-expanding sub-area is gradually increased in the direction away from the entrance pupil grating unit; the waveguide plate has basic flatness, and binocular fusion can be realized by the left eye and the right eye without other extra adjustment. The images of the left eye and the right eye achieve color complementation, and better color uniformity and larger FOV are achieved.

A computer program is disclosed for performing the following method: recording images of a response of a left pupil to a stimulus thereby resulting in a first set of sequential images; recording images of a response of a right pupil to the same stimulus at the same time as the first images were recorded, thereby resulting in a second set of sequential images; displaying on a display simultaneously the first set of images and the second set of image, wherein the two sets of images are synchronized, and wherein a center of the left pupil of each image from the first set of sequential images is aligned with a center of the right pupil from the second set of sequential images on the display.