激光技术
激光技術
격광기술
LASER TECHNOLOGY
2014年
3期
307-310
,共4页
激光技术%点云数据%平面拟合%加权总体最小二乘%强度
激光技術%點雲數據%平麵擬閤%加權總體最小二乘%彊度
격광기술%점운수거%평면의합%가권총체최소이승%강도
laser technique%point clouds data%plane fitting%weighted total least square%intensity
为了提高点云数据平面拟合精度，提出强度加权总体最小二乘法。该方法是在传统加权总体最小二乘法基础上，利用点云数据中各点强度信息确定其平面拟合权重，通过均质性不同的3种平面样本数据对该方法的适用性进行了研究。结果表明，与最小二乘法和总体最小二乘方法相比，该方法对于均质性较好的点云数据有效，可以得到更高精度的参量解；而对于均质性较差的点云数据，该方法效果不理想，总体最小二乘法是最有效方法。
為瞭提高點雲數據平麵擬閤精度，提齣彊度加權總體最小二乘法。該方法是在傳統加權總體最小二乘法基礎上，利用點雲數據中各點彊度信息確定其平麵擬閤權重，通過均質性不同的3種平麵樣本數據對該方法的適用性進行瞭研究。結果錶明，與最小二乘法和總體最小二乘方法相比，該方法對于均質性較好的點雲數據有效，可以得到更高精度的參量解；而對于均質性較差的點雲數據，該方法效果不理想，總體最小二乘法是最有效方法。
위료제고점운수거평면의합정도，제출강도가권총체최소이승법。해방법시재전통가권총체최소이승법기출상，이용점운수거중각점강도신식학정기평면의합권중，통과균질성불동적3충평면양본수거대해방법적괄용성진행료연구。결과표명，여최소이승법화총체최소이승방법상비，해방법대우균질성교호적점운수거유효，가이득도경고정도적삼량해；이대우균질성교차적점운수거，해방법효과불이상，총체최소이승법시최유효방법。
In order to improve the plane fitting precision of point cloud data , the intensity weighted total least square method was proposed .The method, based on the ordinary weighted total least square method , determined the weight value of plant fitting using the intensity information of each point in point cloud data .The application of the method was analyzed with three different homogenous data .Experimental results show that the method is effective for plane fitting of point clouds with good homogeneity , and more accurate solution can be obtained compared with total least squares method and least squares method .As for plane fitting of inhomogeneous point clouds , the total least squares method is superior to the proposed method .
