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公开(公告)号：US11288838B2
公开(公告)日：2022-03-29
申请号：US16531105
申请日：2019-08-04
发明人： Fuqiang Ma , Jiankang Sun , Gang Li , Hongzhen Xue , Zehua Dong
摘要： 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.
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公开(公告)号：US10942567B2
公开(公告)日：2021-03-09
申请号：US16662554
申请日：2019-10-24
发明人： Jiankang Sun , Lili Chen , Hao Zhang , Hongzhen Xue , Fuqiang Ma , Zehua Dong
摘要： 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.
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公开(公告)号：US20210012153A1
公开(公告)日：2021-01-14
申请号：US16498145
申请日：2019-01-15
发明人： Fuqiang Ma , Guixin Yan , Zehua Dong
摘要： An image processing method includes acquiring a set of training images, and extracting a visual feature of each training image in the set of training images. The method includes clustering the visual feature, generating a visual dictionary composed of cluster centers serving as visual words, and adding 1 to the number of the visual dictionaries. The method includes determining whether the number of the visual dictionaries is equal to a predetermined number, and outputting the predetermined number of visual dictionaries generated if the determination result is yes, otherwise determining, from the visual dictionary, a visual word nearest to the visual feature. The method includes calculating a residual between the visual feature and the visual word nearest to the visual feature, determining the residual as the new visual feature, and returning to clustering the visual feature, generating a visual dictionary, and adding 1 to the number of the visual dictionaries.
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4.发明授权公开(公告)号：US11526580B2
公开(公告)日：2022-12-13
申请号：US16669647
申请日：2019-10-31
发明人： Minglei Chu , Zehua Dong , Hao Zhang , Lili Chen , Yukun Sun , Yakun Wang , Xuefeng Wang , Jinghua Miao
摘要： A method for correcting data sensed by a sensor includes: acquiring the data sensed by the sensor; establishing a surface equation based on an acquired data to performing surface fitting; and correcting the data sensed by the sensor with the surface equation. The method further includes: evaluating the acquired data sensed by the sensor to update fitting parameters of the surface equation so as to obtain an updated surface equation; and correcting the data sensed by the sensor with the updated surface equation. Parameter data sensed by the sensor can be corrected in real time, which reduces the influence of environmental factors on the parameter data sensed by the sensor and improves the accuracy of the data sensed by the sensor.
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5.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
发明人： Zehua Dong , Minglei Chu , Lili Chen , Hao Zhang , Jiankang Sun , Yukun Sun , Jinghua Miao , Zhifu Li , Xuefeng Wang , Hongzhen Xue
IPC分类号： A61B5/11 , G01C21/16 , G06F1/16 , G06F3/01 , G06K9/00 , G06T19/00 , G06T7/207 , G06T7/277 , G06T7/60 , G06T7/73
摘要： 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.
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公开(公告)号：US10971108B2
公开(公告)日：2021-04-06
申请号：US16523118
申请日：2019-07-26
发明人： Minglei Chu , Lili Chen , Hao Zhang , Zehua Dong , Guixin Yan , Jinghua Miao
摘要： This disclosure relates to an image display method and apparatus, an electronic device, a VR device, and a non-transitory computer-readable storage medium. An image display method applied to a VR device comprises: determining an activity state of the VR device according to measurement data of a sensor within the VR device; determining a processing mode of a current frame image to be displayed according to the activity state, wherein the processing mode is one of a flicker suppression process and a forwarding process; and processing the current frame image to be displayed according to the processing mode to obtain a current frame image for a display in the VR device, and sending it to the display.
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公开(公告)号：US11509882B2
公开(公告)日：2022-11-22
申请号：US16772902
申请日：2019-08-26
发明人： Shuo Zhang , Hao Zhang , Lili Chen , Minglei Chu , Hongzhen Xue , Guixin Yan , Zehua Dong , Huidong He , Chenxi Zhao , Xiangjun Peng , Yaoyu Lv , Yukun Sun , Qingwen Fan , Yachong Xue
IPC分类号： H04N13/315 , H01L27/32
摘要： A three-dimensional display apparatus includes: a display layer and a transmissive phase modulator, wherein the transmissive phase modulator is disposed on a light exit side of the display layer, and includes a plurality of modulation units; and each of the modulation units is configured to perform phase modulation on light received by the modulation unit, and is configured such that a picture displayed by the display layer is presented as a contiguous curved virtual image after being processed by the transmissive phase modulator.
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公开(公告)号：US20220132098A1
公开(公告)日：2022-04-28
申请号：US16772902
申请日：2019-08-26
发明人： Shuo Zhang , Hao Zhang , Lili Chen , Minglei Chu , Hongzhen Xue , Guixin Yan , Zehua Dong , Huidong He , Chenxi Zhao , Xiangjun Peng , Yaoyu Lv , Yukun Sun , Qingwen Fan , Yachong Xue
IPC分类号： H04N13/315 , H01L27/32
摘要： A three-dimensional display apparatus includes: a display layer and a transmissive phase modulator, wherein the transmissive phase modulator is disposed on a light exit side of the display layer, and includes a plurality of modulation units; and each of the modulation units is configured to perform phase modulation on light received by the modulation unit, and is configured such that a picture displayed by the display layer is presented as a contiguous curved virtual image after being processed by the transmissive phase modulator.
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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
发明人： Zehua Dong , Hao Zhang , Lili Chen , Minglei Chu , Jiankang Sun , Ziqiang Guo , Zhanshan Ma , Bingxin Liu
摘要： 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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公开(公告)号：US20200218343A1
公开(公告)日：2020-07-09
申请号：US16662554
申请日：2019-10-24
发明人： Jiankang Sun , Lili Chen , Hao Zhang , Hongzhen Xue , Fuqiang Ma , Zehua Dong
摘要： 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.
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