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公开(公告)号：US11941171B1
公开(公告)日：2024-03-26
申请号：US17765612
申请日：2021-05-28
Applicant: BOE Technology Group Co., Ltd.
Inventor： Menglei Zhang , Jiankang Sun , Guixin Yan , Yaoyu Lv , Yachong Xue , Xinkai Li
IPC: G06F3/01 , G06T7/215 , G06T7/292 , G06T7/73 , G06T11/00 , G06V10/22 , G06V10/764 , G06V10/82 , G06V40/10
CPC classification number: G06F3/013 , G06T7/215 , G06T7/292 , G06T7/74 , G06T11/00 , G06V10/235 , G06V10/764 , G06V10/82 , G06V40/10 , G06T2207/20084 , G06T2207/30201
Abstract: An eye gaze tracking method, apparatus and system are provided, which belong to the technical field of image processing. The eye gaze tracking method includes: capturing, by at least two cameras, frames of facial images when a viewer views display screen; segmenting a current frame of facial image with pre-trained eye detection model to obtain an image for left and right eyes; calculating a similarity between the current frame of facial image and each of previous N frames of facial images; if the similarity between the current frame of facial image and each of previous N frames of facial images is less than the preset threshold, detecting a position on display screen at which the eyes of the viewer gaze with pre-trained eye detection model. Embodiments of the present disclosure can improve accuracy and efficiency of eye gaze tracking.
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公开(公告)号：US11805238B2
公开(公告)日：2023-10-31
申请号：US17462894
申请日：2021-08-31
Inventor： Yaoyu Lv , Yachong Xue , Zhanshan Ma , Jiankang Sun , Lili Chen , Hao Zhang
IPC: H04N13/393 , G06F17/10 , H04N13/106
CPC classification number: H04N13/393 , G06F17/10 , H04N13/106
Abstract: Methods and apparatuses for acquiring display image sequence, rotary stereoscopic display devices and storage media are provided. A method includes: determining voxels in a 3D display space by multiple partitioning of the 3D display space in a cylindrical coordinate system using a predetermined partitioning mode, where the predetermined partitioning mode includes non-uniform partitioning in a radius direction of the cylindrical coordinate system, and space bounding boxes resulting from a same partitioning have a same volume; determining a cross-sectional profile of a 3D object to be displayed on a display screen at each of phase positions; determining a cross-sectional image based on voxels and the cross-sectional profile at each of the phase positions; and acquiring a display image sequence by arranging the cross-sectional images according to rotation angles of the display screen.
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公开(公告)号：US11729927B2
公开(公告)日：2023-08-15
申请号：US17229953
申请日：2021-04-14
Inventor： Yuhong Liu , Zhanshan Ma , Jiankang Sun , Zheng Ge , Lili Chen
CPC classification number: H05K5/0217 , H05K1/0277 , H05K5/0017 , H05K5/0086
Abstract: A rotary shaft mechanism of an electronic is provided. The rotary shaft mechanism includes a first rotating assembly and a second rotating assembly, wherein the first rotating assembly is provided with a first through hole, and the second rotating assembly is provided with a second through hole, wherein the first through hole is in communication with the second through hole, and an axis of the first through hole and an axis of the second through hole are both intersected with a rotary shaft between the first rotating assembly and the second rotating assembly. A flexible circuit board of the electronic device is disposed in the first through hole and the second through hole.
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44.发明授权公开(公告)号：US11662814B2
公开(公告)日：2023-05-30
申请号：US17555230
申请日：2021-12-17
Inventor： Jiankang Sun , Hao Zhang , Lili Chen , Yachong Xue , Xinkai Li
CPC classification number: G06F3/013 , G06T7/70 , G06T2207/10048
Abstract: A sight positioning method, a head-mounted display device, a computer device, and a computer-readable storage medium are provided. The method includes: determining a first transform relation and a second transform relation, where the first transform relation is a transform relation between an image coordinate system and a light source coordinate system, and the second transform relation is a transform relation between the light source coordinate system and a display unit coordinate system; calculating coordinates of a pupil center in the image coordinate system according to an eye image of eyes of a user acquired by the image acquisition equipment; and obtaining coordinates of the pupil center serving as a fixation point position in the display unit coordinate system of the display unit according to the coordinates of the pupil center in the image coordinate system, the first transform relation and the second transform relation.
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45.发明授权公开(公告)号：US11537200B2
公开(公告)日：2022-12-27
申请号：US17359677
申请日：2021-06-28
Inventor： Guixin Yan , Jiankang Sun , Lili Chen , Hao Zhang
Abstract: Provided are a human-machine interaction method, a system, a processing device and a computer readable storage medium, wherein the method includes: controlling a 3D display to output a 3D view to present a virtual target object; receiving a user image taken by a sight tracking camera, and detecting an eye gaze region according to the user image; receiving a hand image taken by a gesture detection camera, and detecting whether a user's hand collides with the virtual target object and/or grabs the virtual target object according to the hand image; controlling playing of the 3D view according to whether human eyes gaze at the virtual target object, the user's hand collides with the virtual target, and grasps the virtual target object.
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Patent Agency Ranking
公开(公告)号：US11423518B2
公开(公告)日：2022-08-23
申请号：US16473110
申请日：2019-01-10
Inventor： Minglei Chu , Hao Zhang , Lili Chen , Chenru Wang , Yali Liu , Yukun Sun , Guixin Yan , Jiankang Sun
Abstract: A method and a device of correcting image distortion, a display device, a computer readable medium and an electronic device. The method of correcting image distortion includes: forming a correction grid on an imaging screen of a display device, the correction grid including a plurality of to-be-adjusted grid points; forming a circle on the correction grid; and moving the to-be-adjusted grid point on and outside the circle, to correct image distortion.
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公开(公告)号：US11379960B2
公开(公告)日：2022-07-05
申请号：US16718731
申请日：2019-12-18
Inventor： Gang Li , Lili Chen , Jiankang Sun , Fuqiang Ma , Liyang Cui , Minglei Chu , Yachong Xue
Abstract: Embodiments of the present disclosure provides an image processing method, comprising: acquiring an initial image comprising an image of pupil; acquiring an accumulative histogram set of grayscale values of pixels in the initial image; determining a threshold for binarizing the initial image according to a grayscale value corresponding to a target region in respective accumulative histograms in the accumulative histogram set, wherein the target region corresponds to the image of pupil in the initial image; and binarizing the initial image according to the threshold. An image processing apparatus and a wearable device are further provided.
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公开(公告)号：US11270456B2
公开(公告)日：2022-03-08
申请号：US16620680
申请日：2019-03-29
Inventor： Zehua Dong , Hao Zhang , Lili Chen , Minglei Chu , Jiankang Sun , Ziqiang Guo , Zhanshan Ma , Bingxin Liu
Abstract: The present disclosure discloses a spatial positioning method, a spatial positioning device, a spatial positioning system and a computer readable medium. The spatial positioning method includes: capturing a feature image containing multiple feature markers of a to-be-positioned object; determining coordinate positions of respective feature markers in the feature image in an image coordinate system; traversing the respective feature markers in the image coordinate system according to preset multiple standard vector relations, and arbitrarily selecting at least three of the feature markers to calculate vector relations corresponding to the standard vector relations; determining position information of at least three feature markers according to position information corresponding to the standard vector relations in the image coordinate system when it is determined that the calculated vector relations satisfy any standard vector relation.
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49.发明授权公开(公告)号：US11183105B2
公开(公告)日：2021-11-23
申请号：US16963410
申请日：2019-12-24
Inventor： Xi Li , Yuanjie Lu , Jinghua Miao , Bin Zhao , Xuefeng Wang , Yukun Sun , Jianwen Suo , Qingwen Fan , Wenyu Li , Jinbao Peng , Zhifu Li , Lili Chen , Jiankang Sun
Abstract: The present disclosure provides a display panel and device, an image processing method and device, and a virtual reality system. The display panel includes: a first display area; and at least one second display area surrounding the first display area, a number of sub-pixels per unit area in the first display area being greater than a number of sub-pixels per unit area in the at least one second display area.
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50.发明授权公开(公告)号：US10923051B2
公开(公告)日：2021-02-16
申请号：US16553497
申请日：2019-08-28
Inventor： Xi Li , Yuanjie Lu , Jinghua Miao , Bin Zhao , Wenyu Li , Xuefeng Wang , Yukun Sun , Jinbao Peng , Zhifu Li , Qingwen Fan , Jianwen Suo , Hao Zhang , Lili Chen , Jiankang Sun , Lixin Wang , Ziqiang Guo
IPC: G09G3/36
Abstract: A method for backlight black frame insertion optimization includes: acquiring a current display mode of the wearable smart device; acquiring a current motion state of the wearable smart device; and generating a control signal according to the current display mode and the current motion state to adjust backlight black frame insertion of the wearable smart device.
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