非合目标的激光反射层析投影配准方法

投影配准技术能够从投影回波中提取目标的旋转中心点,旋转中心点的获取直接决定着目标廓像的精确重建,故而投影配准技术是研究激光反射层析必不可少的最重要问题之一。现有的投影配准技术都是基于对合作目标特征点的跟踪提取,极大限制了反射层析技术的应用范围。提出了一种经过改进的特征点跟踪算法,通过跟踪投影回波峰值点变化,并对求得的多个旋转中心点位置信息加权平均以消除估计误差,以取得准确的特征点位置信息。实验证明该算法能够直接获取非合目标的特征点,拓展了激光反射层析技术的应用领域。

Laser reflective tomography projection registration method of non-cooperative target

Projection registration technique can extract the rotation center point of the target from projection echo, Obtaining rotation center point will directly determines whether exacting reconstruct of target. Therefore the projection registration technique is one of the most important problems in studying laser reflection tomography. At present, Projection registration is only used to tracking and extracting feature point from cooperative target, which will greatly limits the application field of reflective tomography technology. This paper presented an improved feature point tracking algorithm, by tracking changes of the projection echo peak. In order to obtain accurate information of feature point position, weighting average all of the calculated rotation center position to eliminate the estimation error. Experimental results show that the algorithm can be directly used to non-cooperative target, which expands the application field of the laser reflection tomography technology.