-
1.发明授权公开(公告)号：US11579466B2
公开(公告)日：2023-02-14
申请号：US17288722
申请日：2020-08-13
Inventor： Yaoyu Lv , Hongzhen Xue , Guixin Yan , Fuqiang Ma , Lili Chen , Hao Zhang , Zhanshan Ma , Shuo Zhang
IPC: G02B30/54 , H04N13/393 , G02B30/52 , G06T17/20
Abstract: A method of simulating volumetric 3D display, includes: acquiring a display variable of a virtual display screen in a volumetric 3D display simulation space, the virtual display screen comprising a plurality of stereo pixels, the display variable comprising a voxel parameter of the plurality of stereo pixels, and the voxel parameter comprising a size in a first direction of the plurality of stereo pixels, a size in a second direction of the plurality of stereo pixels, and a size in a third direction of the plurality of stereo pixels; determining a display state parameter of a first stereo pixel of the plurality of stereo pixels for an object to be displayed according to the display variable; and simulating display of the object to be displayed according to the display state parameter. A computer-readable storage medium and a volumetric 3D display simulation apparatus are further provided.
-
公开(公告)号：US20210241487A1
公开(公告)日：2021-08-05
申请号：US16956747
申请日：2019-11-19
Inventor： Jiankang Sun , Hao Zhang , Lili Chen , Hongzhen Xue , Fuqiang Ma , Minglei Chu , Xi Li
Abstract: The present disclosure relates to a pupil positioning method. The pupil positioning method may include: obtaining an eye image under illumination of a light source; determining a first internal point in a pupil of the eye image; calculating gradient changes of pixel points along a straight line starting from the first internal point toward outside of the pupil; determining a plurality of edge points at an edge of the pupil based on the gradient changes of the pixel points along the straight line; and performing ellipse fitting on the edge points to obtain a pupil center.
-
3.发明授权公开(公告)号：US11120562B2
公开(公告)日：2021-09-14
申请号：US16537241
申请日：2019-08-09
Inventor： Zehua Dong , Minglei Chu , Lili Chen , Hao Zhang , Jiankang Sun , Yukun Sun , Jinghua Miao , Zhifu Li , Xuefeng Wang , Hongzhen Xue
IPC: A61B5/11 , G01C21/16 , G06F1/16 , G06F3/01 , G06K9/00 , G06T19/00 , G06T7/207 , G06T7/277 , G06T7/60 , G06T7/73
Abstract: The present disclosure provides a posture estimation method, a posture estimation apparatus, and a computer readable storage medium. Here, the posture estimation method includes: calculating an angular velocity control amount at a current moment based on a measured acceleration value and an estimated acceleration value at the current moment; correcting the measured angular velocity value at the current moment according to the calculated angular velocity control amount to obtain the corrected angular velocity value at the current moment; and obtaining an estimated posture quaternion value at a next moment according to the corrected angular velocity value obtained by calculation and an estimated posture quaternion value at the current moment.
-
公开(公告)号：US20210247320A1
公开(公告)日：2021-08-12
申请号：US16956886
申请日：2020-01-02
Inventor： Hongzhen Xue , Fuqiang Ma , Yali Liu , Lili Chen , Jiankang Sun , Shuo Zhang
Abstract: An optical distortion measurement method that including receiving target field of view information; processing the target field of view information using a coordinate conversion model to obtain screen coordinates of a target angle of view, wherein the coordinate conversion model may be configured to convert image plane coordinates of the target angle of view to screen coordinates of the target angle of view; and outputting at least the screen coordinates of the target angle of view.
-
5.发明申请公开(公告)号：US20190147597A1
公开(公告)日：2019-05-16
申请号：US15925497
申请日：2018-03-19
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Zhenkun Song , Quan Yang , Hongzhen Xue
Abstract: Embodiments of the present disclosure provide a maximum connected domain marking method, a target tracking method and an AR (Augmented Reality)/VR (Virtual Reality) apparatus, and relate to the field of image processing technology, and can obtain the maximum connected domain. A maximum connected domain marking method comprises: marking connected domains of pixels of a binary image and recording equivalent relationships; merging the equivalent connected domains according to the equivalent relationships, for pixels with the equivalent relationships in the marked results; counting the number of pixels in each merged connected domain; determining a connected domain label for the maximum connected domain according to the counted number of pixels in each connected domain; and determining coordinates of boundary pixels in the maximum connected domain based on the connected domain label.
-
Patent Agency Ranking
公开(公告)号：US11435289B2
公开(公告)日：2022-09-06
申请号：US16956886
申请日：2020-01-02
Inventor： Hongzhen Xue , Fuqiang Ma , Yali Liu , Lili Chen , Jiankang Sun , Shuo Zhang
Abstract: An optical distortion measurement method that including receiving target field of view information; processing the target field of view information using a coordinate conversion model to obtain screen coordinates of a target angle of view, wherein the coordinate conversion model may be configured to convert image plane coordinates of the target angle of view to screen coordinates of the target angle of view; and outputting at least the screen coordinates of the target angle of view.
-
公开(公告)号：US11288838B2
公开(公告)日：2022-03-29
申请号：US16531105
申请日：2019-08-04
Inventor： Fuqiang Ma , Jiankang Sun , Gang Li , Hongzhen Xue , Zehua Dong
Abstract: An image processing method and an image processing includes, when a current frame contains a target picture, taking the current frame as a reference frame for tracking and taking a set of matching points in the current frame, which match the target picture as an initial set of tracking points, to perform tracking of the target picture; obtaining a next frame and determining a set of tracking points of the next frame based on the initial set of tracking points; determining whether the number of tracking points in the set of tracking points is less than a first preset threshold; and, when the number of tracking points in the set of tracking points is less than the first preset threshold, determining supplementary tracking points and adding the supplementary tracking points to the set of tracking points.
-
公开(公告)号：US11132544B2
公开(公告)日：2021-09-28
申请号：US16612996
申请日：2019-04-23
Inventor： Jiankang Sun , Hao Zhang , Lili Chen , Minglei Chu , Hongzhen Xue , Guixin Yan , Xi Li
Abstract: A visual fatigue recognition method, a visual fatigue recognition device, a virtual reality apparatus and a storage medium. The visual fatigue recognition method includes acquiring an eye image of a user; acquiring a visual feature from the eye image, and calculating a visual fatigue value according to the visual features according to the visual feature a visual fatigue value; comparing the visual fatigue value with a fatigue grade threshold values and determining a the visual fatigue grade based on the comparison result; and allowing the visual fatigue grade to be used to generate a corresponding alert signal. The visual fatigue recognition method helps to protect the user's eyesight.
-
公开(公告)号：US10942567B2
公开(公告)日：2021-03-09
申请号：US16662554
申请日：2019-10-24
Inventor： Jiankang Sun , Lili Chen , Hao Zhang , Hongzhen Xue , Fuqiang Ma , Zehua Dong
Abstract: A gaze point compensation method and apparatus in a display device, and a display device are provided. The method includes: obtaining a real-time eye image of a user; obtaining an eye-corner position coordinate in the real-time eye image; when the eye-corner position coordinate is within an initial calibration range, making first compensation for the eye-corner position coordinate according to a correspondence relationship between a pupil and an eye-corner position; otherwise, making second compensation for the eye-corner position coordinate, wherein the second compensation is configured to make the eye-corner position coordinate after the second compensation at least be within the initial calibration range; and compensating for a gaze point according to the first compensation or the second compensation.
-
公开(公告)号：US10825184B2
公开(公告)日：2020-11-03
申请号：US15925497
申请日：2018-03-19
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Zhenkun Song , Quan Yang , Hongzhen Xue
Abstract: Embodiments of the present disclosure provide a maximum connected domain marking method, a target tracking method and an AR (Augmented Reality)/VR (Virtual Reality) apparatus, and relate to the field of image processing technology, and can obtain the maximum connected domain. A maximum connected domain marking method comprises: marking connected domains of pixels of a binary image and recording equivalent relationships; merging the equivalent connected domains according to the equivalent relationships, for pixels with the equivalent relationships in the marked results; counting the number of pixels in each merged connected domain; determining a connected domain label for the maximum connected domain according to the counted number of pixels in each connected domain; and determining coordinates of boundary pixels in the maximum connected domain based on the connected domain label.
-
-
-
-
-
-
-
-
-
Search Results
25
records
(took 0.023 seconds)
