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公开(公告)号：US12213734B2
公开(公告)日：2025-02-04
申请号：US18336747
申请日：2023-06-16
Applicant: Alcon Inc.
Inventor： Sascha Birkner , Martin Gründig
IPC: A61B3/113 , A61B3/00 , A61B3/10 , A61B3/12 , A61B3/14 , A61B3/18 , G06T7/00 , G06T7/246 , G06T7/73 , G06V40/19
Abstract: Systems and methods for tracking eye movement during a diagnostic procedure include an eye tracker capturing images of an eye, and a control processor configured to detect an eye position and orientation in each of the images, determine an eye fixation position and orientation relative to an optical axis of the eye tracker, estimate eye fixation parameters based at least in part on the determined eye fixation position and orientation, and track the eye position and orientation by analyzing the images to determine the eye position and orientation relative to the eye fixation parameters. The eye fixation parameters may comprise a reference position and orientation of the eye when fixated. A histogram is constructed of detected eye positions and orientations and analyzed to determine an eye fixation position and orientation.
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公开(公告)号：US20210045630A1
公开(公告)日：2021-02-18
申请号：US16991913
申请日：2020-08-12
Applicant: Alcon Inc.
Inventor： Sascha Birkner , Martin Gründig
Abstract: Systems and methods for tracking eye movement during a diagnostic procedure include a retina imaging system configured to capture a first plurality of images of an eye and detect a presence of a fovea, an eye tracker configured to capture a second plurality of images of the eye and track a position and orientation of the eye; and a control processor configured to synchronize the first and second plurality of images, determine a time at which the fovea is detected in the first plurality of images, and determine one or more images from the second plurality of images to be classified as representative of fixation. The classified images are analyzed to determine eye fixation status during the diagnostic procedure based on eye tracking data.
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