计算机科学 ›› 2020, Vol. 47 ›› Issue (3): 137-142.doi: 10.11896/jsjkx.190200261
曾俊飞,杨海清,吴浩
ZENG Jun-fei,YANG Hai-qing,WU Hao
摘要： 针对三维重建时点云配准过程易受环境噪声、点云曝光、光照、物体遮挡等因素的影响,以及传统ICP配准算法配准精度低、耗时长等问题,提出一种基于自适应列文伯格-马夸尔特迭代式的点云配准方法。首先,对初始点云数据采用统计滤波和体素栅格滤波相结合的方式进行降噪预处理;然后,对滤波后的点云进行分层,剔除位于层外的外点数据,以提高后续点云配准的精度;针对传统点云特征描述方法计算量大的问题,使用平滑度参数提取点云特征,以提升点云配准的效率;最后,根据点云特征建立帧间点到线及点到面的约束关系,采用改进的列文伯格-马夸尔特(Levenberg-Marquardt)方法完成点云配准,构建较理想的三维重建模型。实验结果表明,提出的点云配准方法适用于室内及室外场景的三维重建,环境适应性强,且点云配准精度和效率都有较大提升。
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