发明名称 |
METHOD OF MEASURING A PROPERTY OF A TRAJECTORY OF A BALL WITH A MOBILE COMPUTER DEVICE |
摘要 |
Methods for determining a property of a trajectory of a ball with a mobile computer device are described, which include: (a) capturing a sequence of video frames of the ball with a camera of the mobile computer device; (b) determining a first picture coordinate of the ball in a first video frame of the sequence; (c) determining a second picture coordinate of the ball in a second video frame of the sequence; and (d) computing a property of the trajectory of the ball based on a difference of the first and second picture coordinates, a time difference between the first and second video picture and a reference quantity, which may be determined based on a form and/or dimension of the ball in a picture taken with the camera. |
申请公布号 |
US2014300745(A1) |
申请公布日期 |
2014.10.09 |
申请号 |
US201414207409 |
申请日期 |
2014.03.12 |
申请人 |
adidas AG |
发明人 |
Kirk Robert Frank;Driscoll Heather Frances;Kelley John;Hickey Lee |
分类号 |
H04N7/18 |
主分类号 |
H04N7/18 |
代理机构 |
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代理人 |
|
主权项 |
1. A method for determining a property of a trajectory of a ball with a mobile computer device, comprising:
capturing a sequence of video frames of the ball with a camera of the mobile computer device; determining a first picture coordinate of the ball in a first video frame of the sequence; determining a second picture coordinate of the ball in a second video frame of the sequence; and computing a property of the trajectory of the ball using the first and second picture coordinates, a time difference between the first and second video picture and a reference quantity. |
地址 |
Herzogenaurach DE |