摘要
投影仪在使用的时候须垂直正对投影屏幕,否则会产生投射图像的畸变失真,人工调整过程繁琐耗时。针对如何快速、精确地捕捉投影屏幕的相对位置,进而完成失真校正的问题,提出了一种基于时间编码的结构光三维测量方法。该方法利用光纤传感器高精度、格雷码低误码率的优点,能更高效地完成空间定位,从而使图像的数码校正更加准确。实验结果表明,本方法实现的原型系统能较准确地实现投影失真的自动校正,且校正迅速,一次校正耗时约10秒。
The projector should be installed vertically in face of the screen, otherwise it leads to the images distortion, then the operation is time-comsumig because of the bored manual adjustment. Aiming at correcting distortion by catching the screen location fast and accurately, a method of three-dimensional measuring based on Time Encoding Structured light is proposed. It is able to realize space locating efficiently by taking advantage of the high precision of optical fiber sensor and low error probability level of gray codes, then it makes the digital correction for images be more accurately. The final experiment demonstrates that the prototype system reaches the expected design goals, and it takes about 10 seconds to complete the whole operations.
出处
《黑龙江大学自然科学学报》
CAS
北大核心
2011年第6期858-862,共5页
Journal of Natural Science of Heilongjiang University
基金
湖北省自然科学基金资助项目(2008CDB318)
中南民族大学大学生科研创新基金资助项目(YZCX100102Z)
关键词
光纤传感器
格雷码
结构光
梯形校正
fiber optic sensor
gray code
structured light
keystone correction
