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Matrix calculation of high-dimensional cross product and its application in automatic recognition of the endmembers of hyperspectral imagary

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Science china(Information Sciences) 2011年第1期54卷 197-203页

作者： GENG XiuRui1,ZHAO YongChao1,LIU SuHong2 & WANG FuXiang3.1Key Laboratory of Technology in Geo-spatial Information Processing and Application System, Institute of Electronics,Chinese Academy of Sciences,beijing 100080,china 2State Key Laboratory of remote {3. Science,Jointly Sponsored by beijing Normal University and the Institute of remote {3. Applications of Chinese Academy of Sciences, School of Geography,beijing Normal University,beijing 100875,china 3.chool of Electronics and Information Engineering,Beihang University,beijing 100191,china Key Laboratory of Technology in Geo-spatial Information Processing and Application System Institute of Electronics Chinese Academy of Sciences State Key Laboratory of remote sensing Science Jointly Sponsored by Beijing Normal University and the Instit

This paper gives the definition of the high-dimensional cross product and its calculation by extending the 3.D cross product definition into the high-dimensional vector *** on the properties of the cross product,the volume variance index(VVI)is proposed to be used in extracting automatically the endmembers of the hypherspectral imagery which eliminates the shortcoming of the traditional method of using simplex only where the extraction results were easily impacted by the abnormal pixels.A case study of endmembers extraction experiment using the VVI method with the AVIRIS data for Cuprite has shown a very good result.

关键词： endmember simplex hyperspectral imagery cross product

Study on movement inertia in the Earth multi-body system

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Science china(Technological Sciences) 2006年第Z2期49卷 70-79页

作者： CHEN Xiaofei, BI Siwen & GONG Huili Key Laboratory of 3. Information Acquisition and Application, Ministry of Education, Capital Normal University, beijing 10003., china National Key Laboratory of remote {3. Science, Institute of remote {3. Applications (IRSA), Chinese Academy of Sciences, beijing 100101, china Capital Normal Univ Minist Educ Key Lab D Informat Acquisit & Applicat Beijing 100037 Peoples R China Chinese Acad Sci Inst Remote Sensing Applicat Natl Key Lab Remote Sensing Sci Beijing 100101 Peoples R China

This paper summarizes the first movement and mass centre of stratum-block movement inertia in the Earth multi-body system and introduces its application. It also elaborates the moment of inertia and the products of inertia: the inertia dyadic transformation of reference system and the parallel axis theorem of stratum-block movement inertia of the Earth multi-body system. It provides an academic foundation for research on the dynamic model of Earth multi-body system.

关键词： Earth multi-body system, stratum block, movement inertia.

Geologic body three-dimensional model generation and visualization method

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中国有色金属学会会刊：英文版 2005年第S1期15卷 190-192页

作者： ZHANG Song-mei~(1, 2), LI Jing~1, ZHAO Wen-ji~3. Gong Hui-li~3. Duan Fu-zhou~3. GONG Zhao-ning~3. LI Jia-hong~4 (1. beijing Normal University, beijing 100875, china 2. Jilin University, Changchun 13.061, china 3. The Key Lab of Resource Environment and GIS, beijing 10003., china 4. National remote sensing Center of china, beijing 100862, china)

The divergence three-dimensional millet-seed body model and the continuous distributing layer-imitating model were introduced, which were used to express geologic body, and the procedure of generating these two models and their merits and demerits were synthesized. Three methods of geologic body’s three-dimensional expression were separately introduced, and the merits of the continuous distributing layer imitating model were proposed as comparing with the divergence three-dimensional millet-seed body model. The three-dimensional cubes were observed from any direction and any tangle with the application of dealing methods such as peeling, hollowing out, transparent or half-transparent.

关键词： geologic body regular grid net irregular triangle net three-dimensional visualization

Automated detection of lunar craters based on object-oriented approach

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Chinese Science Bulletin 2008年第23期53卷 3699-3704页

作者： YUE ZongYu1,2,3.4, LIU JianZhong3.& WU GanGuo2 1 Institute of remote sensing Application, Chinese Academy of Sciences, beijing 100101,{3. 2{3. University of Geosciences (beijing), beijing 100083.{3. 3.National Astronomical Observatories of Chinese Academy of Sciences, beijing 100012,{3. 4 Department of Geological Sciences, The University of Texas at San Antonio, San Antonio, TX 78249, U.S.A Institute of remote sensing Application Chinese Academy of Sciences Beijing 100101 China china University of Geosciences (beijing) Beijing 100083 China National Astronomical Observatories of Chinese Academy of Sciences Beijing 100012 China Department of Geological Sciences The University of Texas at San Antonio San Antonio TX 78249 U.S.A

The object-oriented approach is a powerful method in making classification. With the segmentation of images to objects, many features can be calculated based on the objects so that the targets can be distinguished. However, this method has not been applied to lunar study. In this paper we attempt to apply this method to detecting lunar craters with promising results. Craters are the most obvious features on the moon and they are important for lunar geologic study. One of the important questions in lunar research is to estimate lunar surface ages by examination of crater density per unit area. Hence, proper detection of lunar craters is necessary. Manual crater identification is inefficient, and a more efficient and effective method is needed. This paper describes an object-oriented method to detect lunar craters using lunar reflectance images. In the method, many objects were first segmented from the image based on size, shape, color, and the weights to every layer. Then the feature of "contrast to neighbor objects" was selected to identify craters from the lunar image. In the next step, by merging the adjacent objects belonging to the same class, almost every crater can be taken as an independent object except several very big craters in the study area. To remove the crater rays diagnosed as craters, the feature of "length/width" was further used with suitable parameters to finish recognizing craters. Finally, the result was exported to ArcGIS for manual modification to those big craters and the number of craters was acquired.

关键词：自动化检测月球环形山地貌

Development of environmental monitoring satellite systems in china

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Science china Earth Sciences 2010年第S1期53卷 1-7页

作者： LI GuoPing1 & CAO ChunXiang2 1 School of Earth and Space Sciences,Peking University,beijing 100871,china 2 State Key Laboratory of remote {3. Science,Jointly Sponsored by the Institute of remote {3. Applications of Chinese Academy of Sciences and beijing Normal University,beijing 100101,china School of Earth and Space Sciences Peking University Beijing China State Key Laboratory of remote sensing Science Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University Beijing China

With the increase in global environmental problems,the necessity and urgency of remote sensing technology being applied to environmental monitoring has been widely recognized around the *** has launched the environment and disaster monitoring and forecasting small satellite constellation HJ-1A/B and the FY3.atmosphere and environmental satellite,but they still cannot fully satisfy requirements for environmental *** paper summarizes the current status of satellite environmental monitoring in china and the existing problems of inadequate load design and low data utilization efficiency,and discusses the demand for environmental monitoring *** on the development of foreign satellite systems for environmental monitoring,the future development and key tasks of the environmental monitoring satellite system in china is discussed,as are some related initiatives.

关键词： environmental satellite environmental monitoring global climate change specialty load satellite system

Research on the Earth system multi-body force system dynamical model

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Science china(Technological Sciences) 2006年第Z2期49卷 11-22页

作者： CHEN Xiaofei, BI Siwen, WU Fei & DONG Qianlin State Key Laboratory of remote sensing Science, Jointly Sponsored by the Institute of remote sensing Applications of Chinese Academy of Sciences and beijing Normal University, beijing 100101, china Laboratory of 3. Information Access and Application of Capital Normal University, beijing 10003., china Chinese Acad Sci Inst Remote Sensing Applicat State Key Lab Remote Sensing Sci Beijing 100101 Peoples R China beijing Normal Univ Beijing 100101 Peoples R China Capital Normal Univ Lab D Informat Access & Applicat 3 Beijing 100037 Peoples R China

This paper presents an overview of the binding force and freedom force of Earth system, and describes force moment to point and line and force system in the Earth system. It introduces the force theory of the Earth system multi-body force system from special or equivalent force system of Earth system mechanics, general force and no-power force of Earth system. Finally it describes the force and moment of nodes of Earth system and provides basic model for the research of the Earth system multi-body dynamics.

关键词： Earth system, multi-body system force, dynamics, basic models.

In flight MTF monitoring and compensation for CCD camera on CBERS-02

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Science china(Technological Sciences) 2005年第S2期48卷 29-43页

作者： GU Xingfa1,2,3. LI Xiaoying1,2,4, MIN Xiangjun5, YU Tao1,2, SUN Jijuan5, ZENG Yong1,2,4, XU Hua1,2 & GUO Ding2,6 1. State Key Laboratory of remote sensing Science, Jointly Sponsored by the Institute of remote sensing Applications of Chinese Academy of Sciences and beijing Normal University, beijing 100101, china 2. The Center for National Spaceborne Demonstration, beijing 100101, china 3. Institut National de la Recherche Agronomique, Climat Sol Environnement, 84914 Avignon, France 4. Graduate University of Chinese Academy of Sciences, beijing 10003., china 5. china Center for Resource Satellite Data and Application, beijing 10083., china 6. University of Electronic Science and Technology of china, Chengdu 610054, china State Key Laboratory of remote sensing Science Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University The Center for National Spaceborne Demonstration

In this article, the approach of simulating ideal tarp scene was proposed to determine the MTF for CCD camera on CBERS-02. The MTF acquired from this technique was compared to those from some common methods. MTFs achieved from different approaches were employed to compensate the CCD images based on three restoration algorithms: the iterative method, the Wiener filter and the modified inverse filter (MIF). The two-dimensional MTF was established with the value at frequency 0.5 for 45° directional MTF as the value at its four corners. This article addressed the variations of the restored CCD images with different techniques of constructing two-dimensional MTF, restoring algorithms and determining the in-flight MTFs. Results showed images restored with the MTF determined from the technique of simulating ideal tarp scene represent the real scene best. And the restoration technique based on the MIF would produce better restored images than the other two techniques. This research also demonstrated that the two-dimensional MTF used for restoration should be interpolated under the control of the MTF for 45° axis, rather than by multiplying the cross-orbit MTF with along-orbit MTF.

关键词： CBERS-02 CCD MTF the technique of simulating ideal tarp scene.

Applications of remote sensing Techniques in Coal geology

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Acta Geologica Sinica(English Edition) 1989年第3期63卷 253-269页

作者： Guan Haiyan remote sensing geology Centre, Ministry of Coal Industry, Xi’an, Shaanxi Fei Zhenbi remote sensing geology Centre Ministry of Coal Industry Xi' an Shaanxi

Through applied researches, the regularity of thermal infrared radiation of the coal seams has been found, a model of thermal radiation of the coal seams established, and the internal relations of the information extracted from remote sensing images with coal seams and coal measures revealed. Through a series of complete tests of remote sensing techniques such as multi-level (space, aerial and ground) synchronous remote-sensing and multi-directional, multiband and multitemporal remote sensing, the optimal procedure for applications of remote sensing techniques in coal geology has been determined. The theories and methods established in the applied researches have yielded apparent economic results and social benefits in respect to coal field prediction, coal reconnaissance, coal geological surveys and detection of geological hazards in coal mines.

关键词： Applications of remote sensing Techniques in Coal geology

Post-earthquake assessment of building damage degree using LiDAR data and imagery

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Science china(Technological Sciences) 2008年第S2期51卷 133-143页

作者： LI ManChun1,CHENG Liang1,2,GONG JianYa2,LIU YongXue1,CHEN ZhenJie1,LI FeiXue1,CHEN Gang1,CHEN Dong1 & SONG XiaoGang3.1 Department of Geographic Information Science,Nanjing University,Nanjing 210093.china 2 State Key Laboratory of Information Engineering in Surveying,Mapping and remote sensing,Wuhan University,Wuhan 43.079,china 3.State Key Laboratory of Earthquake Dynamics,Institute of geology,china Earthquake Administration,beijing 100029,china Department of Geographic Information Science Nanjing University Nanjing China State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing Wuhan University Wuhan China State Key Laboratory of Earthquake Dynamics Institute of Geology China Earthquake Administration Beijing China

Various methods have been developed to detect and assess building's damages due to earthquakes using remotely sensed *** the launch of the high resolution sensors such as IKONOS and QuickBird,it becomes realistic to identify damages on the scale of individual *** the low accuracy of the results has often led to the use of visual interpretation ***,it is very difficult to estimate the degree of building damage(*** damage,moderate damage,or severe damage) in detail using the existing ***,a novel approach integrating LiDAR data and high resolution optical imagery is proposed for evaluating building damage degree *** approach consists of two steps:3. building model reconstruction and rooftop patch-oriented 3. change ***,a method is proposed for automatically reconstructing 3. building models with precise geometric position and fine details,using pre-earthquake LiDAR data and high resolution ***,focusing on each rooftop patch of the 3. building models,the pre- and post-earthquake LiDAR points belonging to the patch are collected and compared to detect whether it was destroyed or not,and then the degree of building damage can be identified based on the ratio of the destroyed rooftop patches to all rooftop *** novelty of the proposed approach is to detect damages on the scale of building's rooftop patch and realize quantitative estimation of building damage degree.

关键词： post-earthquake assessment building damage degree rooftop patch LiDAR imagery