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Object oriented land cover classification using ALS and GeoEye imagery over mining area

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中国有色金属学会会刊：英文版 2011年第S3期21卷 733-737页

作者： YU Hai-yang, CHENG Gang, GE Xiao-san, LU Xiao-ping Key Laboratory of Mine Spatial Information Technologies of State Bureau of surveying and mapping, Henan Polytechnic University, Jiaozuo 454000, {2. Key Laboratory of Mine Spatial Information Technologies of State Bureau of surveying and mapping Henan Polytechnic University Jiaozuo 454000 China

An object oriented coal mining land cover classification method based on semantically meaningful image segmentation and image combination of GeoEye imagery and airborne laser scanning (ALS) data was presented. First, DEM, DSM and nDSM (normalized Digital Surface Model, nDSM) were extracted from ALS data. The GeoEye imagery and DSM data were combined to create segmented objects based on neighbor regions merge method. Then 10 kinds of objects were extracted. Different kinds of vegetation objects, including crop, grass, shrub and tree, can be extracted by using NDVI and height value of nDSM. Water and coal pile field was extracted by using NDWI and the standard deviation of DSM method. Height differences also can be used to distinguish buildings from road and vacant land, and accurate building contour information can be extracted by using relationship of neighbor objects and morphological method. The test result shows that the total classification accuracy of the presented method is 90.78% and the kappa coefficient is 0.891 4.

关键词： airborne laser scanning GeoEye nDSM object oriented classification mining areas

Three-dimensional geodetic deformation surveying for Naner area in Daqing oilfield

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中国有色金属学会会刊：英文版 2005年第S1期15卷 112-115页

作者： LIU Xing-quan~(1, 2., LIU Shao-xuan~2. ZHANG Zhi-wen~3, XU Hai~4, LIU Jian-jun~5 (1. Department of Earth Science, Zhejiang University, Hangzhou 31002., china 2. The Second Oil Recovery Plant of Daqing Oilfields Co Ltd, Daqing 163414, china 3. Daqing Logging and Testing Services Company, Daqing 163411, china 4. Longnan Telephone Station of Daqing Communications Center, Daqing 163410, china 5. Department of Civil Engineering, Wuhan Polytechnic University, Wuhan 43002., china) Zhejiang Univ Dept Earth Sci Hangzhou 310027 Peoples R China Second Oil Recovery Plant of Daqing Oilfields Co Daqing 163414 Peoples R China Daqing Commun Ctr Longnan Telephone Stn Daqing 163410 Peoples R China Daqing Logging & Testing Serv Co Daqing 163411 Peoples R China Wuhan Polytech Univ Dept Civil Engn Wuhan 430023 Peoples R China

Geodetic deformation severely affects the development of the oilfield and probably causes casing damage or abandonment of injection wells and producers. Therefore, it is meaningful to survey and study three-dimensional geodetic deformation in the process of the oilfield development. In order to study this issue, 11-year long term surveying of three-dimensional geodetic deformation has been carried out while developing Naner area in Daqing oilfield. Basic rules of 3-D geodetic deformation have been obtained through surveying. Results show that production and injection under high pressure may cause the changes of surface elevation, and geodetic deformation correlates with simultaneous formation pressure. Precautions and relative technological measurements have been put forward in the waterflood development in Naner region and provide theoretical guidelines for the production and casing preservation of the oilfield. Finally, surveying results are interpreted by porous elastic theory. Mathematical model to calculate 3-D geodetic deformation is put forward in the course of the oilfield development.

关键词： Daqing oilfield geodetic deformation producer water injector mathematical model

Vertical Diastrophic Movement of the Continental Blocks in Eastern china

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Continental Dynamics 1999年第1期 78-83页

作者： CHANGXiaotao and HUJianguo Chinese academyof surveying and {2., Beitaiping Rd .16, Haidian District, beijing 100039 , china

The mechanism of diastrophic movementin eastern chinaisstudied in this articlecombiningtheresult of precise leveling with *** Qinling Dabie tectonic line and Tanlu fault are two of the mostimportantstructuresthatcontrolthetectonic movementin eastern *** Yangtze block is rising, while the North china block and the Northeast china block are sinking. The Qinling Dabie tectonic line is the boundary ofthe Yangtze block ,but east of the Tanlu faultthe Qinling Dabie tectonic line is switched to the Qingdao Wulian fault(in Shandong province of eastern china) .The result of precise leveling indicates thatthe Qinling Dabie collisionalorogenic beltgive evidences ofrejuvenation .Although the Tanlu fault was ever aleft hand strike slipping faultin the history ,itis now a right hand strike slipping fault.

关键词： vertical diastrophic movement leveling Tanlu fault Qinling Dabie tectonic line

A multi-scale and multi-orientation image retrieval method based on rotation-invariant texture features

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Science china(Information Sciences) 2011年第4期54卷 732-744页

作者： SHAO ZhenFeng,LI DeRen & ZHU XianQiang State key Laboratory for Information Engineering in surveying,mapping and Remote Sensing,Wuhan University,12. Luoyu Road,Wuhan 430079,{2. 1. State key Laboratory for Information Engineering in surveying Mapping and Remote Sensing Wuhan University 129 Luoyu Road Wuhan 430079 China

Texture retrieval is a vital branch of content-based image ***-invariant texture retrieval plays a key role in texture *** paper addresses three major issues in rotation-invariant texture retrieval: how to select the texture measurement methods,how to alleviate the influence of rotation for texture retrieval and how to apply the proper multi-scale analysis theory for texture ***,the spectrum influence between a Radon transform and a Log-polar transform was compared after the rotation effect was *** average retrieval performance of wavelet and NSCT with different retrieval parameters was also *** on such analysis,we developed a multi-scale and multi-orientation texture transform spectrum,as well as a rotation-invariant feature vector and its measurement criteria,which can represent the human visual perception sensitive to texture *** a new rotation-invariant texture retrieval algorithm was *** algorithm was developed based on non-parametric statistical features and it applies low band and high frequency directional bands of NSCT coefficients for coarse filtering and fine retrieval,*** on the Brodatz image database show that the constructed rotation-invariant feature vector is appropriate for capturing major orientations and describing detail ***,the combination of the two-step progressive retrieval strategy and multi-scale analysis method can effectively improve retrieval efficiency while ensuring a high precision compared with traditional algorithms.

关键词： NSCT Log-polar Radon rotation-invariant texture retrieval

Practice and technical approach of GPS observation of mining-induced ground subsidence

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中国有色金属学会会刊：英文版 2005年第S1期15卷 65-68页

作者： GAO Jun-hai~(1,2. WU Li-xin~1 (1. china University of Mining and Technology beijing Campus, beijing 100083, china 2. Tangshan Branch, china Coal Research Institute, Tangshan 063012. china) china Univ Min & Technol Beijing 100083 Peoples R China china Coal Res Inst Tangshan Branch Tangshan 063012 Peoples R China

The base vector between 2.poins and a high-precision geodetic height difference can be obtained by GPS. If the geodetic height of a point is known, the geodetic height of each observation point in a net can be obtained. When surveying the subsidence value in the mining-induced ground subsidence, the change of the height of monitoring point is needed. On the above theoretical basis, the problem involved in GPS observation of mining-induced ground subsidence and their counter measures were discussed, and an introduction was made that the subsidence value obtained in the monitoring mining-induced ground subsidence can use the change of height of geodetic as a alternative, the result of check on the accuracy and reliability of repetitions observations was analysed. Finally, the effect of errors on accuracy of GPS observation and their reduction measures were elaborated.

关键词： mining-induced ground subsidence GPS observation observation accuracy reliability

Analysis and Modeling of PPP Residuals from GPS and GLONASS

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Analysis and Modeling of PPP Residuals from GPS and GLONASS

Integrating genetic algorithm method with neural network for land use classification using SZ-3 CMODIS data

第三届中国卫星导航学术年会

作者： Qianxin Wang1, 2. Yingyan Chen11. Chinese academy of surveying and {2., beijing 100830 2. School of Geosciences and Info-Physics, Central South University, Changsha 410083

The PPP results are different for the same station at the same time when using different GNSS observations. The reason is that there are some different system errors in every navigation system, such as satellite orbit error, satellite clock error, frequency drift, etc. In this paper, a lot of data from GPS and GLONASS mixed observation stations are processed using CSRS-PPP software. The results show that the positioning precision of GPS is better than that of GLONASS and the positioning precision of the N component is better than those of the E and U component. There are some regular varieties in the residuals, which includes the trend items and periodic items. Therefore, an error compensation model is constructed. The experiment results show that the PPP precision of GPS and GLONASS can be improved by using the proposed model.

关键词： Multi-GNSS PPP Residual Analysis Spectrum Analysis

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Progress in Natural Science:Materials International 2005年第10期 75-80页

作者： WANG Changyao, LUO Chengfeng and LIU Zhengjun (The State Key Laboratory of Remote Sensing Sciences, Institute of Remote Sensing Applications, Chinese academy of Sciences, beijing 100101, {2. Institute of Photogrammetry and Remote Sensing, Chinese academy of surveying and mapping, beijing 100039, {2.) The State Key Laboratory of Remote Sensing Sciences Institute of Remote Sensing Applications Chinese Academy of Sciences Beijing 100101 China Institute of Photogrammetry and Remote Sensing Chinese Academy of Surveying and Mapping Beijing 100039China

This paper presents a methodology on land use mapping using CMODIS (Chinese Moderate Resolution Imaging Spec-troradiometer) data on-board SZ-3 (Shenzhou 3) spacecraft. The integrated method is composed of genetic algorithm (GA) for feature extraction and neural network classifier for land use classification. In the data preprocessing, a moment matching method was adopted to remove the stripes in the images. Then by using the reproduction, crossover and mutation operators of GA based on the mechanism of "natural selection", and with Jeffries-Matusita distance as its discriminate rule and the training samples, the optimal band combination for land use classification was obtained. To generate a land use map, the three layers back propagation neural network classifier is used for training the samples and classification. Compared with the Maximum Likelihood classification algorithm, the results show that the accuracy of land use classification is obviously improved by using our proposed method, the selected band number in the classification process is reduced, and the computational performance for training and classification is improved. The result also shows that the CMODIS data can be effectively used for land use/land cover classification and change monitoring at regional and global scale.

关键词： CMODIS genetic algorithm band selection neural network land use classification.

Model and Method of Establishing Horizontal Velocity Field in china’s mainland

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Model and Method of Establishing Horizontal Velocity Field i...

第三届中国卫星导航学术年会

作者： CHEN Xing 12.CHENG Pengfei 1 CHENG Yingyan 1 (1.Chinese academy of surveying and {2. beijing 100830) (2.University of Liaoning Project Technology academy of surveying and {2. Liaoning Fuxin 12.000)

china Geodetic Coordinate System 2.00 was enabled formally On July 1,2.08,the definition of it is accordance with that of the International Terrestrial Reference *** the basis of adjusting all observation data of crustal movement observation network of china（CMONOC）,the china’s mainland was divided into seven plates in this paper,and the data was calculated with GAMIT/GLOBK soft and the high precise global position system（GPS） coordinates and velocity values in international terrestrial reference frame05 （ITRF 05）were *** model of horizontal velocity field had been established with two space interpolation methods of inverse distance weight（IDW）and Kriging in china’s *** accuracy of IDW is±1.2.mm/a in the east-west,±1.2.mm/a in the south-north and the other is±1.06mm/a in the east-west,±1.09mm/a in the *** results of two interpolation methods accord with the trends of moving in the whole china’s *** trend is strong in west,weak in east,complex in the central china.

关键词： CGCS2.00 division of plate velocity field model

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基于数字摄影测量技术的三维建模

同济大学学报（自然科学版） 2005年第1期33卷 37-41页

作者：程效军朱鲤刘俊领同济大学测量与国土信息工程系天津市大港区规划和国土资源局天津300270

以数字航空遥感立体像对为基础 ,辅以地面数字近景摄影测量的方法 ,建立城市三维景观模型 .根据遥感像对之间的相互关系建立一个交会模型 ,得到地物点坐标 ,建立数字表面模型 (DSM) ,然后通过纹理映射描述细部 .实践证明 ,这一方法具有... 详细信息

以数字航空遥感立体像对为基础 ,辅以地面数字近景摄影测量的方法 ,建立城市三维景观模型 .根据遥感像对之间的相互关系建立一个交会模型 ,得到地物点坐标 ,建立数字表面模型 (DSM) ,然后通过纹理映射描述细部 .实践证明 ,这一方法具有精度高和速度快等特点 ,能有效地实现速度和逼真度的兼顾 ,特别是对于大范围区域的三维建模更能显示其优越性 .

关键词：数字摄影测量三维建模纹理映射影像匹配