| 人机交互式电子白板中坐标转换算法研究 |
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| 引用本文： | 张蓉. 人机交互式电子白板中坐标转换算法研究[J]. 光电子技术, 2006, 26(4): 267-271 |
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| 作者姓名： | 张蓉 |
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| 作者单位： | 浙江大学现代光学仪器国家重点实验室,杭州,310027 |
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| 摘 要： | 人机交互式电子白板系统是基于对光信息的处理，由计算机，投影设备，特殊光笔组成的多媒体工具。为了实现光笔对光标的控制，系统需要通过CCD对光点信号进行采集和处理，得到特殊光点的二维坐标，因此必须对屏幕上点进行坐标定位和转换。采用屏幕三点线性定位的方法，利用数据库查表进行坐标转换，使得屏幕坐标和CCD坐标的一一对应，实现系统的功能。
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| 关 键 词： | 人机交互 电荷耦合器件 坐标转换 |
| 文章编号： | 1005-488X(2006)04-0267-05 |
| 收稿时间： | 2005-11-10 |
| 修稿时间： | 2005-11-10 |
Arithmetic Study of Coordinates Conversation in Human-computer Interaction Whiteboard System |
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| ZHANG Rong. Arithmetic Study of Coordinates Conversation in Human-computer Interaction Whiteboard System[J]. Optoelectronic Technology, 2006, 26(4): 267-271 |
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| Authors: | ZHANG Rong |
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| Affiliation: | National Key Laboratory of Modern Optical Instrument, Zhejiang University, Hangzhou , 310027, CHN |
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| Abstract: | Human-computer interaction whiteboard system based on the optical information processing is composed of computer,projector and special digital pen.For controlling the cursor directly,the system would collect and deal with the signal of the spot target.The spot's two-dimensional position can be gained by the light sensitive layer of CCD and be transmitted by CCD signal processing circuit.The system adoptes 3 anchor points in screen for orientation and uses database to process coordinates conversation.Thus screen coordinates can correspond with CCD coordinates,and the function of the system can be realized. |
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| Keywords: | human-computer interaction CCD coordinates conversation |
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