摘要
针对轴对称目标三维姿态参数中的偏航角、俯仰角的提取问题,提出了一种自动提取目标中轴线方法。该方法运用自适应Canny算子检测目标边缘,改进的Hough变换获得边缘图像中各条直线边缘的坐标点;通过优化的最小二乘算法将各条直线边缘的坐标点进行拟合获得边缘直线方程;结合序列图像中目标特性,检测出边缘直线中特定的两条平行直线进而获得目标的中轴线方程。实验表明:该方法能够有效地、高精度地提取轴对称目标的中轴线,提取的中轴线平均角度误差为0.022°。
In order to measure the pitching angle and yaw angle of the axes symmetry object in three-dimension orientation,an automatic method of extracting the axes of the object has been presented.The edge points of the target have been detected through Canny operator,the support region points of all the edge line have been obtained by using the improved Hough transform,and the line equation has been calculated with the least square algorithm.According to the characters of the axes. object target in the Experimental effectively in image, the spec results show t high precision, ified parallel line has been detected to get the equation of the hat this method can extract the axes of the axes symmetry and the mean error of the axes angle is 0.022°.
出处
《半导体光电》
EI
CAS
CSCD
北大核心
2007年第1期143-146,共4页
Semiconductor Optoelectronics
