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公开(公告)号：US12113954B2
公开(公告)日：2024-10-08
申请号：US17401672
申请日：2021-08-13
Applicant: APPLE INC.
Inventor： Walter Nistico
IPC: H04N13/279 , H04N13/271 , H04N13/293 , H04N13/296
CPC classification number: H04N13/279 , H04N13/271 , H04N13/293 , H04N13/296
Abstract: In one implementation, a method includes receiving pixel events output by an event sensor that correspond to a feature disposed within a field of view of the event sensor. Each respective pixel event is generated in response to a specific pixel within a pixel array of the event sensor detecting a change in light intensity that exceeds a comparator threshold. A characteristic of the feature is determined at a first time based on the pixel events and a previous characteristic of the feature at a second time that precedes the first time. Movement of the feature relative to the event sensor is tracked over time based on the characteristic and the previous characteristic.
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Patent Agency Ranking
公开(公告)号：US12026309B2
公开(公告)日：2024-07-02
申请号：US18144079
申请日：2023-05-05
Applicant: APPLE INC.
Inventor： Walter Nistico , Andrii Nikiforov , Borys Lysyansky
CPC classification number: G06F3/013 , G06V40/19 , G06V40/193 , G06F2203/011
Abstract: The invention is concerned with a method for performing a calibration procedure for calibrating an eye tracking device (12), wherein a stimulus object (S) is displayed within a certain display area (22), such that the stimulus object (S) is at least temporarily moving along a defined trajectory (26) and images of at least one eye (16) of at least one user (18) are captured during the displaying of the stimulus object (S). Based on the captured images gaze data are provided and in dependency of the gaze data gaze points (P) of the at least one eye (16) of the user (18) with respect to the display area (22) are determined. Further, at least one calibration parameter (a1; a2; a3; a4; a5; a6; a7; a8; a9; a10; a11; a12; a13; a14; Θ; R; K; a; b; r) of at least one predefined calibration model (M, M1, M2, M3, M4, M5, M6) is determined in dependency of a first analysis at least of positions of at least part of the respective gaze points (P) with regard to the defined trajectory (26) of the stimulus object (S). Further, at least one control parameter (N, (A, D), T) is determined in dependency of at least part of the captured gaze data and controlling the execution of at least part of the calibration procedure in dependency of the at least one determined control parameter (N, (A, D), T).
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公开(公告)号：US11320904B2
公开(公告)日：2022-05-03
申请号：US17196403
申请日：2021-03-09
Applicant: APPLE INC.
Inventor： Walter Nistico , Andrii Nikiforov , Borys Lysyansky
Abstract: The invention is concerned with a method for performing a calibration procedure for calibrating an eye tracking device (12), wherein a stimulus object (S) is displayed within a certain display area (22), such that the stimulus object (S) is at least temporarily moving along a defined trajectory (26) and images of at least one eye (16) of at least one user (18) are captured during the displaying of the stimulus object (S). Based on the captured images gaze data are provided and in dependency of the gaze data gaze points (P) of the at least one eye (16) of the user (18) with respect to the display area (22) are determined. Further, at least one calibration parameter (a1; a2; a3; a4; a5; a6; a7; a8; a9; a10; a11; a12; a13; a14; Θ; R; K; a; b; r) of at least one predefined calibration model (M, M1, M2, M3, M4, M5, M6) is determined in dependency of a first analysis at least of positions of at least part of the respective gaze points (P) with regard to the defined trajectory (26) of the stimulus object (S). Further, at least one control parameter (N, (A, D), T) is determined in dependency of at least part of the captured gaze data and controlling the execution of at least part of the calibration procedure in dependency of the at least one determined control parameter (N, (A, D), T).
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24.发明申请公开(公告)号：US20220061660A1
公开(公告)日：2022-03-03
申请号：US17470789
申请日：2021-09-09
Applicant: Apple Inc.
Inventor： Walter Nistico , Jan Hoffmann , Eberhard Schmidt
IPC: A61B3/14 , A61B3/00 , A61B3/024 , A61B3/107 , A61B3/11 , A61B3/113 , G02B27/00 , G02B27/01 , G06F3/01 , G02C11/00 , H04N5/225 , H04N5/232 , H04N5/247 , H04N5/33
Abstract: The invention relates to a method for determining at least one parameter of two eyes (10l, 10r) of a test person (31), the method comprising the following steps: optically capturing of a first eye (10l; 10r) of the two eyes (10l, 10r) by means of a first capturing unit (3l; 3r); optically capturing the second eye (10r; 10l) of the two eyes (10l, 10r) by means of a second capturing unit (3r; 3l); transmitting first signals concerning the captured first eye (10l; 10r) from the first capturing unit (3l; 3r) to an analysis unit (27) and transmitting second sig-nals concerning the captured second eye (10r; 10l) from the second capturing unit (3r; 3l) to the analysis unit (27); determining the at least one parameter of the two eyes (10l, 10r) on the basis of the transmitted first and second signals in the analysis unit (27), characterized by the following step: setting a first data rate for the first signals and a second data rate for the sec-ond signals, wherein the first and the second data rate differ from each other, and wherein the transmitting of the first signals is effected at a first data rate and the transmitting of the second signals is effected at a second data rate.
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公开(公告)号：US20210223862A1
公开(公告)日：2021-07-22
申请号：US17196403
申请日：2021-03-09
Applicant: APPLE INC.
Inventor： Walter Nistico , Andrii Nikiforov , Borys Lysyansky
Abstract: The invention is concerned with a method for performing a calibration procedure for calibrating an eye tracking device (12), wherein a stimulus object (S) is displayed within a certain display area (22), such that the stimulus object (S) is at least temporarily moving along a defined trajectory (26) and images of at least one eye (16) of at least one user (18) are captured during the displaying of the stimulus object (S). Based on the captured images gaze data are provided and in dependency of the gaze data gaze points (P) of the at least one eye (16) of the user (18) with respect to the display area (22) are determined. Further, at least one calibration parameter (a1; a2; a3; a4; a5; a6; a7; a8; a9; a10; a11; a12; a13; a14; Θ; R; K; a; b; r) of at least one predefined calibration model (M, M1, M2, M3, M4, M5, M6) is determined in dependency of a first analysis at least of positions of at least part of the respective gaze points (P) with regard to the defined trajectory (26) of the stimulus object (S). Further, at least one control parameter (N, (A, D), T) is determined in dependency of at least part of the captured gaze data and controlling the execution of at least part of the calibration procedure in dependency of the at least one determined control parameter (N, (A, D), T).
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公开(公告)号：US20190133440A1
公开(公告)日：2019-05-09
申请号：US16009084
申请日：2018-06-14
Applicant: Apple Inc.
Inventor： Kun Liu , Walter Nistico , Hao Qin
Abstract: The invention relates to an eye tracking system (10) and a method for operating an eye tracking system (10) for determining if one of a left and a right eye of a user is dominant, wherein at least one image of the left and the right eye of the user is captured (S30), based on the at least one image and according to a predefined accuracy function a left accuracy score for the left eye (S34a) and a right accuracy score for the right eye (S34c) is determined and it is determined if one of the left and the right eye of the user is dominant in dependency of at least the left and the right accuracy score (S36). Thereby user-specific properties relating to his eyes can be provided and considered when performing eye tracking so that the robustness and accuracy of eye tracking can be enhanced.
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