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公开(公告)号：US20240134463A1
公开(公告)日：2024-04-25
申请号：US18403764
申请日：2024-01-04
申请人： NEX Team Inc.
发明人： Wang Fai Ng , Wing Hung Chan , Long Mak , Keng Fai Lee , On Loy Sung
IPC分类号： G06F3/01 , G06F3/04812 , G06F3/04815 , G06N3/08 , G06T7/73 , G06V40/20
CPC分类号： G06F3/017 , G06F3/04812 , G06F3/04815 , G06N3/08 , G06T7/73 , G06V40/28
摘要： Methods and systems for touchless control of a device include receiving at least one image; determining a first map, the first map including a function that generates a correspondence between data associated with the image to a feature space; determining a second map including a representation of a user in the image based on the first map; determining a third map comprising a field associated with the data in the image; determining a characteristic of the user based on one or more of the second map and the third map; and tracking the characteristic of the user to generate a historical data of the characteristic for performing the touchless control of the device.
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公开(公告)号：US11638854B2
公开(公告)日：2023-05-02
申请号：US16424287
申请日：2019-05-28
申请人： NEX Team, Inc.
发明人： Qi Zhang , Wing Hung Chan , Keng Fai Lee , Wang Fai Ng
摘要： Methods and systems for real-time generation of ball shot analytics are disclosed. The methods and systems perform steps for ball and posture detection, ball and posture flow generation, shot event identification and classification, and shot analytics generation based on identified shot events and shooter posture flow. Embodiments of the present invention use computer vision techniques to enable a resource-limited mobile device such as a smartphone to conduct the aforementioned steps. Also disclosed are benefits of the new methods, and alternative embodiments of implementation.
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公开(公告)号：US11450010B2
公开(公告)日：2022-09-20
申请号：US17503295
申请日：2021-10-16
申请人： NEX Team Inc.
发明人： On Loy Sung , Qi Zhang , Keng Fai Lee , Shing Fat Mak , Daniel Dejos , Man Hon Chan
IPC分类号： G06T7/246
摘要： Methods and systems for determining and classifying a number of repetitive motions in a video are described, and include the steps of first determining a plurality of images from a video, where the images are segmented from at least one video frame of the video. Next, performing a pose detection process on a feature of the images to generate one or more landmarks. Next, determining one or more principle component axes on points associated with a given landmark. Finally, determining at least one repetitive motion based on a pattern associated with a projection of the points onto the one or more principle components. In some embodiments, the disclosed methods can classify the repetitive motions to respective types. The present invention can be implemented for convenient use on a mobile computing device, such as a smartphone, for tracking exercises and similar repetitive motions.
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公开(公告)号：US20220138966A1
公开(公告)日：2022-05-05
申请号：US17503295
申请日：2021-10-16
申请人： NEX Team Inc.
发明人： On Loy Sung , Qi Zhang , Keng Fai Lee , Shing Fat Mak , Daniel Dejos , Man Hon Chan
IPC分类号： G06T7/246
摘要： Methods and systems for determining and classifying a number of repetitive motions in a video are described, and include the steps of first determining a plurality of images from a video, where the images are segmented from at least one video frame of the video. Next, performing a pose detection process on a feature of the images to generate one or more landmarks. Next, determining one or more principle component axes on points associated with a given landmark. Finally, determining at least one repetitive motion based on a pattern associated with a projection of the points onto the one or more principle components. In some embodiments, the disclosed methods can classify the repetitive motions to respective types. The present invention can be implemented for convenient use on a mobile computing device, such as a smartphone, for tracking exercises and similar repetitive motions.
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公开(公告)号：US20210299539A1
公开(公告)日：2021-09-30
申请号：US17303885
申请日：2021-06-09
申请人： NEX Team Inc.
发明人： Qi Zhang
摘要： Methods and systems for object trajectory reconstruction are disclosed. The methods and systems perform steps of first, receiving a first trajectory in a first image space and a user's location. Next, generating at least one trajectory line based on the user's location and the first trajectory, where the trajectory line can include at least one projection point representing a projection of the object's position. And finally, for the trajectory line, determining an associated second trajectory by determining, for the projection point in the trajectory line, a distance between the object and a plane. Some embodiments of the present invention enable a resource-limited mobile device, such as a smartphone, to efficiently perform this method. Also disclosed are benefits of the new methods, and alternative embodiments of implementation.
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公开(公告)号：US11024053B1
公开(公告)日：2021-06-01
申请号：US17124520
申请日：2020-12-17
申请人： NEX Team Inc.
发明人： Qi Zhang , Wing Hung Chan , Keng Fai Lee , Long Mak
摘要： Methods and systems for performing location and movement determination in a three-dimensional environment using a mobile device with a camera are disclosed. The methods and systems perform the steps of capturing one or more images of a user using the camera on the mobile computing device, determining the user from the images using a machine learning algorithm, determining a pose associated with the user using a machine vision algorithm, determining a depth of the user with respect to the camera based on the pose and an input height of the user using a binary search process, and determining the location of the user in the environment based on the pose and the depth.
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公开(公告)号：US20200298080A1
公开(公告)日：2020-09-24
申请号：US16823418
申请日：2020-03-19
申请人： NEX Team Inc.
发明人： Qi Zhang
摘要： Methods and systems for 3D ball trajectory reconstruction are disclosed. The methods and systems perform steps of receiving a 2D ball trajectory, a shooter's on-ground foot location, and a camera projection matrix; generating on-ground trajectory line assumptions based on the shooter's on-ground foot location and the 2D trajectory; reconstructing a candidate 3D trajectory for each on-ground trajectory line assumption, by determining a ball height for each on-ground projection point in the on-ground trajectory line and by curve fitting; evaluating each candidate 3D trajectory and selecting one with a best score as the reconstructed 3D ball trajectory. Embodiments of the present invention enable a resource-limited mobile device such as a smartphone to conduct the aforementioned steps. Also disclosed are benefits of the new methods, and alternative embodiments of implementation.
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公开(公告)号：US20200258419A1
公开(公告)日：2020-08-13
申请号：US16862753
申请日：2020-04-30
申请人： NEX Team Inc.
发明人： Keng Fai Lee , Qi Zhang , Wing Hung Chan , Wang Fai Ng , Tin Yin Lam , Alexander Wu , Ian Smith , David Richard Schmierer , Bradford Lewis Farkas , Kin Ming Law
摘要： Methods and systems for remote multiplayer gameplay are disclosed. An example method can include joining a multiplayer interactive physical game including first and second players competing in an activity; capturing a first game video of a first player in a first play of the multiplayer interactive physical game, using a first camera on a first mobile computing device in a first gaming area; determining a first object flow associated with the first player from the first game video, by performing an algorithm on one or more frames of the first game video to detect one or more key points of the first player; generating a first analytic based on the first object flow; receiving a second analytic associated with the second player in a second gaming area; and generating a feedback to the first player based on the first analytic or the second analytic.
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公开(公告)号：US11594029B2
公开(公告)日：2023-02-28
申请号：US17829397
申请日：2022-06-01
申请人： NEX Team Inc.
发明人： Keng Fai Lee , Tin Yin Lam , Wing Hung Chan , Qi Zhang , On Loy Sung , Man Hon Chan
IPC分类号： G06V20/40 , G06K9/62 , G06N20/00 , G06Q50/00 , G06T7/11 , G06T7/20 , G06V10/25 , G06V10/40 , G06V10/44 , G06V40/20 , G11B27/00 , G06N3/08 , G06V10/764 , G06V10/82 , G06N3/04
摘要： Methods and systems for determining a ball shot attempt location on a ball court are disclosed. The method includes receiving an input video, where the input video includes the ball shot attempt and one or more players; receiving a declared ball shot attempt; determining a potential shooter by detecting a moving object flow in the input video; determining a potential shooter image region in the image plane by analyzing an overlapping image area of the ball trajectory and the potential shooter; determining a shooter foot-on-court time; determining a most probable pair of shooter legs in the potential shooter image region; determining a shooter foot location based on the most probable pair of shooter legs; and determining a ball shot attempt location on the ball court by applying a camera projection to the shooter foot location.
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公开(公告)号：US11322043B2
公开(公告)日：2022-05-03
申请号：US16862753
申请日：2020-04-30
申请人： NEX Team Inc.
发明人： Keng Fai Lee , Qi Zhang , Wing Hung Chan , Wang Fai Ng , Tin Yin Lam , Alexander Wu , Ian Smith , David Richard Schmierer , Bradford Lewis Farkas , Kin Ming Law
摘要： Methods and systems for remote multiplayer gameplay are disclosed. An example method can include joining a multiplayer interactive physical game including first and second players competing in an activity; capturing a first game video of a first player in a first play of the multiplayer interactive physical game, using a first camera on a first mobile computing device in a first gaming area; determining a first object flow associated with the first player from the first game video, by performing an algorithm on one or more frames of the first game video to detect one or more key points of the first player; generating a first analytic based on the first object flow; receiving a second analytic associated with the second player in a second gaming area; and generating a feedback to the first player based on the first analytic or the second analytic.
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