摘要
对于直升机共锥度测量提出了基于运动检测的一种测量新方法;在直升机桨叶水平方向放置一台摄像机,进行图像采集;用自适应阈值帧差法对采集图像进行运动检测,对检测的轮廓进行取均值的操作,将均值后的像素点通过最小二乘法进行直线拟合,直线的斜率即可间接表示桨叶的角度;最后对实验结果给出了误差分析,结果表明角度误差可控制在0.1°。
On the basis of motion detection, a new method for the helicopter rotor common taper measurement was proposed. Placing a video camera in the horizontal position of helicopter blades to capture images and detecting the motion outlines by using frames difference with an adaptive threshold. Processing the outlines with mean method, the results were used for line fitting through the method of least squares. The line~ s slope could represent the blade＇ s angle indirectly. The experiment error was analyzed and the results showed that the angle er- ror could be controlled within O. 1°~.
出处
《计算机测量与控制》
北大核心
2014年第3期684-685,689,共3页
Computer Measurement &Control
基金
合肥工业大学重大项目预研基金(2011HGZL0001)
关键词
帧差
运动轮廓
直线拟合
frame difference
motion outline
line fitting
