International Symposium on Lidar and Radar Mapping Technologies最新文献_第7页

Integration of SAR features into multispectral images based on the nonsubsampled contourlet and IHS transform 基于非下采样contourlet和IHS变换的多光谱图像SAR特征整合

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912723

Zhixiang Yang, Xiufeng He, Jia Xu

{"title":"Integration of SAR features into multispectral images based on the nonsubsampled contourlet and IHS transform","authors":"Zhixiang Yang, Xiufeng He, Jia Xu","doi":"10.1117/12.912723","DOIUrl":"https://doi.org/10.1117/12.912723","url":null,"abstract":"As a new image multiscale geometric analysis tool, the nonsubsampled contourlet transform (NSCT) has many advantages such as multiscale, localization and multidirection, and can efficiently capture the geometric information of images. Therefore, when the NSCT is introduced to image fusion, the characteristics of original images can be taken better and more information for fusion can be obtained. In this paper, a novel fusion algorithm for fusion of the synthetic aperture radar (SAR) image and multispectral images using conjointly the intensity-hue-saturation (IHS) transform and NSCT is proposed. In the proposed method, atrous wavelet is adopted to extract the detail information in low frequency parts fusion, and a new salience measure named as local inner product is introduced to select the high frequency coefficients. A PALSAR HH image of ALOS satellite despeckled by the Lee-sigma filter and HJ-1 multispectral images are used to evaluate the performance and efficiency of the proposed method. The fused images of each method are evaluated by qualitative and quantitative comparison and analysis compared with some traditional fusion rules. The experimental results indicate that the proposed method has the merits of better preservation of image definition and less loss of spectral information.","PeriodicalId":194292,"journal":{"name":"International Symposium on Lidar and Radar Mapping Technologies","volume":"177 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":"124388441","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

Development of the airborne lidar surface topography simulator 机载激光雷达表面地形模拟器的研制

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912564

A. Yu, D. Harding, M. Krainak, J. Abshire, Xiaoli Sun, J. Cavanaugh, S. Valett, Luis Ramos-Izquiedro, Tom Winkert, M. Plants, Cynthia Kirchner, Brian Kamamia, W. Hasselbrack, Timothy Filemyr

引用次数: 1

Planar segmentation and topological reconstruction for urban buildings with lidar point clouds 基于激光雷达点云的城市建筑平面分割与拓扑重建

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912838

Yunfan Li, Hongchao Ma, Jianwei Wu

{"title":"Planar segmentation and topological reconstruction for urban buildings with lidar point clouds","authors":"Yunfan Li, Hongchao Ma, Jianwei Wu","doi":"10.1117/12.912838","DOIUrl":"https://doi.org/10.1117/12.912838","url":null,"abstract":"This paper presents a framework for segmentation and topological relationship reconstruction of building planar surfaces by using airborne LiDAR point clouds. The analysis of a planar surface structure is fundamental to almost any applications involving LiDAR data, especially building reconstruction. The proposed framework consists of two steps. Firstly, point clouds is segmented using an improved RANSAC (RANdom SAmple Consensus) algorithm with variant consensus set threshold. It is designed to solve under- or no- segmentation problem. It reduces consensus set threshold when the original RANSAC could not find valid planes, hence small planar surfaces would be extracted. Then, the topological relationship planar surface is constructed based on estimating connectedness of connecting point pairs between each pair of adjacent planar surfaces. The types of connectedness of planar surface are divided into three categories and a statistical method is used to estimate the connectedness type. The reconstructed topological relationship is described by an adjacent graph and can be utilized in the building modeling. Experiments show the effectiveness and efficiency of the proposed framework.","PeriodicalId":194292,"journal":{"name":"International Symposium on Lidar and Radar Mapping Technologies","volume":"13 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":"121251508","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: 3

Evaluation of the Global Multi-Resolution Terrain Elevation Data 2010 (GMTED2010) using ICESat geodetic control 基于ICESat大地测量控制的全球多分辨率地形高程数据2010 (GMTED2010)评估

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912776

C. Carabajal, D. Harding, J. Boy, J. Danielson, D. Gesch, V. P. Suchdeo

{"title":"Evaluation of the Global Multi-Resolution Terrain Elevation Data 2010 (GMTED2010) using ICESat geodetic control","authors":"C. Carabajal, D. Harding, J. Boy, J. Danielson, D. Gesch, V. P. Suchdeo","doi":"10.1117/12.912776","DOIUrl":"https://doi.org/10.1117/12.912776","url":null,"abstract":"Supported by NASA's Earth Surface and Interior (ESI) Program, we are producing a global set of Ground Control Points (GCPs) derived from the Ice, Cloud and land Elevation Satellite (ICESat) altimetry data. From February of 2003, to October of 2009, ICESat obtained nearly global measurements of land topography (± 86° latitudes) with unprecedented accuracy, sampling the Earth's surface at discrete ~50 m diameter laser footprints spaced 170 m along the altimetry profiles. We apply stringent editing to select the highest quality elevations, and use these GCPs to characterize and quantify spatially varying elevation biases in Digital Elevation Models (DEMs). In this paper, we present an evaluation of the soon to be released Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010). Elevation biases and error statistics have been analyzed as a function of land cover and relief. The GMTED2010 products are a large improvement over previous sources of elevation data at comparable resolutions. RMSEs for all products and terrain conditions are below 7 m and typically are about 4 m. The GMTED2010 products are biased upward with respect to the ICESat GCPs on average by approximately 3 m.","PeriodicalId":194292,"journal":{"name":"International Symposium on Lidar and Radar Mapping Technologies","volume":"8286 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":"129181128","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: 47

A new adaptive windowing method for SAR image despeckling filters 一种新的SAR图像去斑滤波自适应加窗方法

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912443

Libing Jiang, Zhuang Wang

引用次数: 0

Automatic road extraction from lidar data based on height fitting difference 基于高度拟合差的激光雷达数据道路自动提取

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912731

Shaoguang Zhou, Shuangjian He, Hao Li

引用次数: 2

Study on monitoring ecological restoration in Jiuli mining area by SAR image 基于SAR图像的九里矿区生态恢复监测研究

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912338

N. Wei, Fu Chen, Q. Tang

引用次数: 0

Novel in situ method for fast determination of bridge pier displacements during push-over tests 一种新的原位快速测定桥梁桥墩位移的方法

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912834

Hung-Chi Chen, Walter W. Chen, Che-Hao Chang

{"title":"Novel in situ method for fast determination of bridge pier displacements during push-over tests","authors":"Hung-Chi Chen, Walter W. Chen, Che-Hao Chang","doi":"10.1117/12.912834","DOIUrl":"https://doi.org/10.1117/12.912834","url":null,"abstract":"Taiwan is located in an area where frequently changing weather conditions threaten the lives and properties of its residents. With global warming, concentrated rains and extreme weathers bring about more frequent flash floods and debris flows, and destroy more bridges. This study describes the first ever full-scale experiment to determine the lateral displacements of abandoned bridge piers during push-over tests. In addition to cable position transducers and a LVDT, a high speed 3D terrestrial laser scanner was placed in the riverbed to scan the test pier, the reaction pier, and the reference steel frame. The results showed that not only can the laser scanner detect and measure the pier displacements at specific points, but it can also provide the displacement measurements of the entire test pier from top to bottom, thus generating more measurement data of the pier deformation behavior for further analysis than the cable position transducers or the LVDT alone. Other benefits of using the laser scanner include the determination of the relative displacements between the test pier and the reaction pier and the 3D realistic visualization of the experiment site. It is believed that the terrestrial laser scanner can play important roles in future large-scale structural experiments.","PeriodicalId":194292,"journal":{"name":"International Symposium on Lidar and Radar Mapping Technologies","volume":"19 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":"129466376","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

Monitoring and inversion on land subsidence over mining area with InSAR technique 基于InSAR技术的矿区地面沉降监测与反演

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912345

Yanan Wang, Qin Zhang, Chaoying Zhao, Zhong Lu, X. Ding

引用次数: 2

Matching of terrestrial laser intensity image and optical image 地面激光强度图像与光学图像的匹配

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI: 10.1117/12.912832

Y. Zhang, Weiwei Li, Hong Yang, Xiangyan Chen

{"title":"Matching of terrestrial laser intensity image and optical image","authors":"Y. Zhang, Weiwei Li, Hong Yang, Xiangyan Chen","doi":"10.1117/12.912832","DOIUrl":"https://doi.org/10.1117/12.912832","url":null,"abstract":"The matching of terrestrial laser intensity image and optical image is one of the active research areas in terrestrial laser scanning technique. In this paper, we introduce an algorithm based on gray scale to match intensity image and optical image. The similarity measure and the size of matching template are two crucial issues of this algorithm. Firstly, the correlation coefficient based on gray values and the mutual information based on statistical distribution are combined. Thus an integrated criterion is produced to extract corresponding points in an intensity image and an optical image. Secondly, an experiment was done to perceive the relations between the correlation coefficient and the mutual information of corresponding points and the size of a matching template. This image matching algorithm has two steps, coarse image matching and fine image matching. The coarse image matching step is carried out to search three precise pairs of corresponding points to calculate a mapping polynomial, by which a primary search region can be obtained for reducing the possibility of false correspondence and increasing the speed of image matching. While the fine image matching step aims at obtaining more precise corresponding points in the region determined by the mapping polynomial.","PeriodicalId":194292,"journal":{"name":"International Symposium on Lidar and Radar Mapping Technologies","volume":"7 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":"120991838","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