公开(公告)号：US11474614B2

公开(公告)日：2022-10-18

申请号：US17085866

申请日：2020-10-30

申请人： Wei Li ,  Wei Zhou ,  Sachi Mizobuchi ,  Ghazaleh Saniee-Monfared ,  Juwei Lu ,  Taslim Arefin Khan ,  Rafael Veras Guimaraes

发明人： Wei Li ,  Wei Zhou ,  Sachi Mizobuchi ,  Ghazaleh Saniee-Monfared ,  Juwei Lu ,  Taslim Arefin Khan ,  Rafael Veras Guimaraes

IPC分类号： G06F3/01 ,  G06T7/70 ,  G06T7/20 ,  G06T7/50 ,  G06V40/20 ,  G06V10/25

摘要： Methods, devices, and processor-readable media for adjusting the control-display gain of a gesture-controlled device are described. Adjusting the control-display gain may facilitate user interaction with content or UI elements rendered on a display screen of the gesture-controlled device. The control-display gain may be adjusted based on a property of how a mid-air dragging gesture is being performed by a user's hand. The property may be the location of the gesture, the orientation of the hand performing the gesture, or the velocity of the gesture. A hand that becomes stationary for a threshold time period while performing the dragging gesture may adjust the control-display gain to a different level. Control-display gain may be set to a different value based on the current velocity of the hand performing the gesture. The control-display gain levels may be selected from a continuous range of values or a set of discrete values. Devices for performing the methods are described.

公开(公告)号：US11475642B2

公开(公告)日：2022-10-18

申请号：US17127022

申请日：2020-12-18

申请人： Szu Wen Fan ,  Taslim Arefin Khan ,  Wei Li

发明人： Szu Wen Fan ,  Taslim Arefin Khan ,  Wei Li

IPC分类号： G06T19/00 ,  G06F17/16 ,  G06T15/06 ,  G06F3/04842

摘要： Methods and systems for selecting an object or location in an extended reality (XR) environment or physical environment are described. A first origin, including a first position and a first direction, and a second origin, including a second position and a second direction, are obtained by at least one sensor. An intersection of a first ray, casted from the first origin, and a second ray, casted from the second origin, is determined. A selected object or selected location is identified, based on the determined intersection. An identification of the selected object or the selected location is outputted.

公开(公告)号：US11327630B1

公开(公告)日：2022-05-10

申请号：US17167764

申请日：2021-02-04

申请人： Taslim Arefin Khan ,  Szu Wen Fan ,  Changqing Zou ,  Wei Li

发明人： Taslim Arefin Khan ,  Szu Wen Fan ,  Changqing Zou ,  Wei Li

IPC分类号： G06F3/0481 ,  G06T19/00 ,  G06F3/01 ,  G02B27/01 ,  H04B1/3827 ,  G06F3/04815

摘要： Devices, methods, systems, and media are described for selecting virtual objects for user interaction in an extended reality environment. Distant virtual objects are brought closer to the user within a virtual 3D space to situate the selected virtual object in virtual proximity to the user's hand for direct manipulation. A virtual object is selected by the user based on movements of the user's hand and/or head that are correlated or associated with an intent to select a specific virtual object within the virtual 3D space. As the user's hand moves in a way that is consistent with this intent, the virtual object is brought closer to the user's hand within the virtual 3D space. To predict the user's intent, hand and head trajectory data may be compared to a library of kinematic trajectory templates to identify a best-matched trajectory template.

公开(公告)号：US20170278426A1

公开(公告)日：2017-09-28

申请号：US15079316

申请日：2016-03-24

申请人： Tusher Chakraborty ,  Taslim Arefin Khan ,  A. B. M. Alim Al Islam

发明人： Tusher Chakraborty ,  Taslim Arefin Khan ,  A. B. M. Alim Al Islam

IPC分类号： G09B21/00

CPC分类号： G09B21/008

摘要： The subject matter disclosed herein relates to a method and design of a system that helps visually-impaired persons to identify Braille characters or geometric shapes such as rectangle, triangle, circle, etc. A Braille character is any combination of six dots that represents an alphanumeric character. The dot of Braille character is represented using a small colored region over a surface, which can be a paper. The color of dot is distinct from the color of surface. The system contains a coupling comprising a pair of light source and light sensor. The system enables recognizing printed Braille characters through identifying distinct colored dots of Braille characters, by sensing real-time deviation in illuminance of light reflected off the surface containing the printed Braille characters. The output of the system encompasses perceivable signal.