发明名称 |
ACTIVE POINTER ATTRIBUTE DETERMINATION BY DEMODULATING IMAGE FRAMES |
摘要 |
An interactive input system comprises at least one imaging assembly having a field of view looking into a region of interest and capturing image frames and processing structure in communication with the at least one imaging assembly. When a pointer exists in captured image frames, the processing structure demodulates the captured image frames to determine frequency components thereof and examines the frequency components to determine at least one attribute of the pointer. |
申请公布号 |
EP2553553(A4) |
申请公布日期 |
2014.08.20 |
申请号 |
EP20110761866 |
申请日期 |
2011.03.31 |
申请人 |
SMART TECHNOLOGIES ULC |
发明人 |
MCGIBNEY, GRANT;RADKE, TIM |
分类号 |
G06F3/042;G06F3/033 |
主分类号 |
G06F3/042 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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