摘要
本文分析了几种摄影状态下空间目标滚转角的测量问题,提出了一种从单站光测数字图像确定目标滚转角的螺旋线法。该方法通过在圆柱形目标表面涂上边界为螺旋线的四区域标志,综合运用直方图均衡化、Susan边缘检测以及Hough变换等数字图像处理技术,从光测图像中得到各个时刻目标中轴线与螺旋线的相交线段的长度,由此可高精度测出空间目标的滚转角,从而有效地解决了靶场试验中空间目标滚转角的测量难题。仿真与实践结果表明,该算法可操作性强,精度较高。
This paper investigates the methods for image measurement of rolling angle of special objects with axis symmetry through several photograph models. And a screwy algorithm based on digital image from mono-view is presented. This algorithm needs the four-region sign with the screwy boundary labeled on the surface of columniform targets, Then the length of the intersecting lines of the object＇s axis and the screwy boundary are gained by means of digital image processing, such as gray histogram balancing, Susan edge detection and Hough transform, Finally, the object＇s rolling angle is accurately gotten in shooting range. Both the emulation and real application show that this approach can give precise and stable results.
出处
《光电工程》
EI
CAS
CSCD
北大核心
2006年第10期84-90,共7页
Opto-Electronic Engineering
关键词
滚转角测量
空间目标
螺旋线
数字图像处理
HOUGH变换
Rolling angle measurement
Space target
Screwy line
Digital image processing
Hough transform
