International Symposium on Lidar and Radar Mapping Technologies最新文献_第5页

De-noising method of InSAR data based on empirical mode decomposition and land deformation monitoring application 基于经验模态分解的InSAR数据去噪方法及陆地变形监测应用

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912604

L. Wang, Fu Chen, Zengke Li, Shaoliang Zhang

{"title":"De-noising method of InSAR data based on empirical mode decomposition and land deformation monitoring application","authors":"L. Wang, Fu Chen, Zengke Li, Shaoliang Zhang","doi":"10.1117/12.912604","DOIUrl":"https://doi.org/10.1117/12.912604","url":null,"abstract":"The applicable choice of filters for InSAR is one of the key procedures, which is associated with the quality of interferogram. The data of InSAR interferogram was decomposed by empirical mode decomposition (EMD). A given signal was decomposed into different Intrinsic Mode Functions (IMFs) filled with the condition. Further investigation of the algorithm is demonstrated below with regard to the multi-resolution standpoint. Empirical mode decomposition includes two operators. The IMF calculation operator and residual calculation operator define the process of similar to high frequency and low frequency filters. Then, the multi-solution structure is realized by decomposing the low frequency step by step. Therefore, the filtered noise-related IMFs together with the other IMFs can be used to restructure the denoised signal. The processing result has confirmed this method feasibility. Comparing the empirical mode decomposition with the general methods, such as median filter, Lee filter, Goldstein filter, using the quantitative evaluation index, i.e., standard deviation (STD) and equivalent number of looks (ENL), the result shows that empirical mode decomposition is powerful to interferogram speckle noise suppression and residues reduction, as well as it can be preserved details information. The method proposed can improve the accuracy of interferometric products.","PeriodicalId":194292,"journal":{"name":"International Symposium on Lidar and Radar Mapping Technologies","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133195549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

3D building reconstruction from lidar data based on Delaunay TIN approach 基于Delaunay TIN方法的激光雷达三维建筑重建

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912830

Dongdong Zhang, Peijun Du

{"title":"3D building reconstruction from lidar data based on Delaunay TIN approach","authors":"Dongdong Zhang, Peijun Du","doi":"10.1117/12.912830","DOIUrl":"https://doi.org/10.1117/12.912830","url":null,"abstract":"With a great progress in the research on digital city and related commercial applications, the construction of 3D city models has been matured gradually as a research topic in recent years. When constructing 3D city models on large scale, it is inevitable to have available reconstruction tools that offer a high level of automation and produce valid models reliably within the required accuracy. In this paper, a new method for the automatic generation of 3D building models from directly observed point cloud captured by airborne LiDAR system is presented. At first, Delaunay TIN model is constructed based on the building points. Then an edge length ratio based trace algorithm is used for refining the building's boundary. And the extracted outlines are regularized applying the regression analysis to obtain the better geometric quality. Then the same plane points set are clustered via those points in a triangle facet having the similar normal vector value, which determines the roof structures. Finally, with the regular outlines and roof structures information, the building models are constructed. The data in the study area provided by www.terrasolid.fi are used to test the approach. The experimental results show that this proposed approach is able to construct building models effectively.","PeriodicalId":194292,"journal":{"name":"International Symposium on Lidar and Radar Mapping Technologies","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115413392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Automatic building edge extraction from lidar data based on images segmentation 基于图像分割的激光雷达数据建筑物边缘自动提取

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912831

Wen Ma, Jian-ping Yue, S. Cao

引用次数: 1

MATLAB tools for EnviSAT ASAR data visualization and image enhancement MATLAB工具的EnviSAT ASAR数据可视化和图像增强

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912347

B. Wen, Yilong Lu

引用次数: 0

Salt-marsh geomorphological patterns analysis based on remote sensing images and lidar-derived digital elevation model: a case study of Xiaoyangkou, Jiangsu 基于遥感影像和激光雷达数字高程模型的盐沼地貌格局分析——以江苏小阳口盐沼为例

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.913039

Yan Xie, Xiaoxiang Zhang, Xianrong Ding, Siqi Liu, Changkuan Zhang

引用次数: 2

A new approach to accurately estimate deformation in PS-DInSAR: solution-space search 一种精确估计PS-DInSAR变形的新方法:解空间搜索

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912330

Xiaojun Luo, Guoxiang Liu, Ding-fa Huang

引用次数: 1

High energy pulsed fiber laser transmitters in the C- and L-band for coherent lidar applications 用于相干激光雷达的C波段和l波段高能脉冲光纤激光器

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912548

W. Shi, N. Moor, E. Petersen, D. Nguyen, Z. Yao, M. Stephen, A. Chavez-Pirson, N. Peyghambarian

{"title":"High energy pulsed fiber laser transmitters in the C- and L-band for coherent lidar applications","authors":"W. Shi, N. Moor, E. Petersen, D. Nguyen, Z. Yao, M. Stephen, A. Chavez-Pirson, N. Peyghambarian","doi":"10.1117/12.912548","DOIUrl":"https://doi.org/10.1117/12.912548","url":null,"abstract":"We report a monolithic specialized high stimulated Brillouin scattering (SBS) threshold fiber laser/amplifier in the C and L band based on highly co-doped phosphate glass fibers. This represents an important new development for coherent LIDAR and remote sensing applications. By using single mode polarization-maintaining large core highly Er/Yb codoped phosphate fibers in the power amplifier stages, we have achieved the highest peak power of 2.02 kW at 1530 nm for 105 ns pulses with transform-limited linewidth, and with a corresponding pulse energy of about 0.212 mJ. The achieved high-energy pulses were frequency doubled by using a commercial periodically poled lithium niobate (PPLN) crystal, and the highest SHG peak power of 271 W has been achieved for the SHG pulses at 765 nm that can be used for oxygen coherent remote sensing. In the L band, more than 80 μJ fiber laser pulses at 1572 nm with 1-2 μs pulse width and transform-limited linewidth have been achieved by using a monolithic fiber laser system in MOPA configuration, which can be used for CO2 coherent remote sensing.","PeriodicalId":194292,"journal":{"name":"International Symposium on Lidar and Radar Mapping Technologies","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129410245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Research on the impact of impervious surface area on urban heat island in Jiangsu Province 江苏省不透水面面积对城市热岛的影响研究

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912517

Yingbao Yang, Ping Pan

{"title":"Research on the impact of impervious surface area on urban heat island in Jiangsu Province","authors":"Yingbao Yang, Ping Pan","doi":"10.1117/12.912517","DOIUrl":"https://doi.org/10.1117/12.912517","url":null,"abstract":"Land surface temperature (LST), vegetation index, and other surface characteristics that obtained from remote sensing data have been widely used to describe urban heat island (UHI) phenomenon, but through impervious surface area (ISA) to describe the phenomenon has only used in a few study areas in our country. In a high urbanization and high population density region like Jiangsu Province, a wide range of extraction of ISA to study its relationship with UHI is less. In this paper, we use multi-temporal remote sensing images as data sources, and extract ISA from it in a large-scale by using decision tree classifier (DTC) and linear spectral mixture analysis (LSMA). Then combine the average surface temperature from the sixth band of Landsat TM by mono-window algorithm for spatial analysis, to assess the change of the urban heat island temperature amplitude and its relationship with the urban development density, size and ecological environment. Finally we use statistical methods to analyze the relationship between ISA, LST and UHI. The results show that ISA has a positive correlation with surface temperature. The ratio of ISA is higher and the difference value of the temperature is larger, thus the UHI will be more obvious.","PeriodicalId":194292,"journal":{"name":"International Symposium on Lidar and Radar Mapping Technologies","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114826904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Improvement of PWF filter using wavelet thresholding for polarimetric SAR imagery 基于小波阈值的偏振SAR图像PWF滤波改进

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912757

S. Boutarfa, Y. Smara, H. Fadel, N. Bouguessa

{"title":"Improvement of PWF filter using wavelet thresholding for polarimetric SAR imagery","authors":"S. Boutarfa, Y. Smara, H. Fadel, N. Bouguessa","doi":"10.1117/12.912757","DOIUrl":"https://doi.org/10.1117/12.912757","url":null,"abstract":"The images acquired by polarimetric SAR radar systems are characterized by the presence of a noise named speckle. This noise, have a multiplicative nature, corrompt at the same time the amplitude and the phase which complicates the data interpretation, degrades the performance of segmentation and reduces the targets detectability. From where need to pretreate images by adapted filtering methods, before carrying out their analysis. In this article, we study the polarimetric wightening filter PWF of Novak and Burl which treats the polarimetric covariance matrix to produce a filtered intensity image. We propose two methods to improve the PWF filter: the first integrates the technique of Lee edge detection to improve the filter performance and detect fine details of the image. This method is called LSDPWF (Lee Structure Detection PWF). After detecting the edges, we filter the detected regions in the polarimetric channels by the PWF filter. The second combines the method of filtering by wavelet thresholding with PWF filter using the stationary wavelet transform SWT. This method is called EPWF (Enhanced PWF). In the wavelet thresholding, we use the soft thresholding which sets to zero the amplitudes of coefficients that are below a certain threshold. So we propose to extend the wavelet thresholding, to apply it in polarimetric SAR images and use the polarimetric information to calculate the threshold on the wavelet coefficients. We implemented these filters and applied them to RADARSAT-2 polarimetric images taken on the areas of Algiers (Algeria). A visual and statistical evaluation and a comparative study are performed. The performance evaluation of each filter is based on smoothing homogeneous areas and preserving edges.","PeriodicalId":194292,"journal":{"name":"International Symposium on Lidar and Radar Mapping Technologies","volume":"438 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116404183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An improved plane fitting based filtering algorithm for airborne lidar data 基于平面拟合的机载激光雷达数据滤波改进算法

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912740

Lei Chen, Shuhe Zhao, A. Wang, Yun-xiao Luo

引用次数: 3