海洋测绘2018，Vol.38Issue(2)：43-47,5.DOI:10.3969/j.issn.1671-3044.2018.02.011
一种针对滩涂LiDAR强度信息的条带噪声修正方法
Intensity Correction Method for Reduction of Striping Noise of Shoaly Land LiDAR Data
摘要
Abstract
An intensity correction method based on non-linear RANSAC fitting intensity joint histogram is proposed for the striping noise appeared in the shoaly land LiDAR intensity data.Firstly,the intensity joint histogram is generated based on a set of pairwise intensity data points identified within two overlapping LiDAR data strips.Secondly,the normalization model is built upon the use of a second-order polynomial function fitted on the intensity joint histogram,and the non-linear RANSAC is used to perform the second-order polynomial fitting.Finally,the fitted polynomial curve is used to correct the intensity data of one LiDAR data strip,so as to eliminate the radiometric misalignment between the intensity data of the two overlapping LiDAR data strips.The results show that the proposed method can obtain better correction results by comparing with the intensity correction method based on the weight least squares or the RANSAC fitting the intensity joint histogram,and the intensity homogeneity can be effectively improved in the overlapping region of the two LiDAR data strips.关键词
遥感测深/滩涂LiDAR/强度修正/非线性RANSAC/强度联合直方图Key words
remote sensing sounding/shoaly land LiDAR/intensity correction/non-linear RANSAC/intensity joint histogram分类
天文与地球科学引用本文复制引用
周唯,彭认灿,董箭,王利伟..一种针对滩涂LiDAR强度信息的条带噪声修正方法[J].海洋测绘,2018,38(2):43-47,5.基金项目
国家自然科学基金(41471380 （）
41601498). （）
