摘要
针对地表点云的剔除和建筑物点云粗差做了大量实验,实验结果表明:剔除地表点云的计算时间是点云数量的二次函数,分次计算可以节省时间;计算范围选择矩形区域更节省时间,ε为点云是否剔除的判断标准,平坦地区小一些,陡峭地区大一些。剔除建筑物点云可一次完成,也可以分2—3次进行,以获得更高质量的点云数据。这种基于实体的点云剔除方法是可行的,可以剔除距离实体表面较远的点云数据,提高数据质量。
In order to analyze the method of eliminating the gross error in three dimensional laser scanning and improve the quality of point cloud data, the method through object-based technique is put forward in this paper. After many experiments, it shows that the method is feasible to eliminate the points that are far from the entity and improve the data quality.
出处
《矿山测量》
2009年第2期13-15,共3页
Mine Surveying
基金
国家公益性行业专项资助(200809128)
