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《Science of Surveying and Mapping》 2008-03
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Generalization of DEM data based on multi-scale wavelet analysis

YU Hao①,YANG Qin-ke①②,ZHANG Xioa-ping①②,LI Rui ①②(①Northwest Sci-tech University of Agriculture and Forestry,Yangling,Shaanxi 712100,China;②Institute of Soil and Water Conservation,Chinese Academy of Sciences,Yangling,Shannxi 712100,China)  
In the same region,with reduction of DEM resolution or contraction of topographic map scale,the details of terrain described by DEM and topographic map are abandoned and only framework features are maintained.In this paper,the multi-scale wavelet analysis and Square Root Model is combined to simulate the general process.Firstly,the higher resolution DEM is decomposed into the low frequency and high frequency parts by Multi-scale wavelet.Secondly,according to the theory of Square Root Model,the threshold of wavelet coefficient in the high frequency is fixed by the ration of choice when the scale is transformed.Finally,all of the low frequency and high frequency is reconstructed.In older to analysis and verify the variety features of DEM,the study uses two important topographic factors slope and profile curvature,and views from Information Theory to comparative analysis.The result shows that the choice of threshold is close to the traditional cartographic generalization using the Square Root Model,and be able to join the scale variety with the degree of cartographic generalization,which realizes the automated generalization of random scale DEM.
【Fund】: 国家973重点基础研究发展计划项目(2007CB407203)
【CateGory Index】: P208
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【References】
Chinese Journal Full-text Database 6 Hits
1 YANG Qin-ke1,2,ZHAO Mu-dan1,LIU Yong-mei1,WANG Lei1,LI Rui2(1.Northwest University,Xi'an 710069,China;2.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling 712100,China);Application of DEMs in Regional Soil Erosion Modeling[J];Geomatics World;2009-01
2 YU Hao1,YANG Qin-ke2,ZHANG Xiao-ping2,HE Hao3(1.The Information Center of Geology and Mineral Resource Exploitation and Development of Xinjiang,Urumchi 830000;2.Institute of Soil and Water Conservation,Chinese Academy of Sciences,Yangling 712100;3.College of Architecture,Xinjiang University,Urumchi 830008,China);A Study of DEM Generalization Based on Wavelet Analysis and It Scale Transformation[J];Geography and Geo-Information Science;2009-04
3 WANG Feng1,WANG Chun-mei2 (1.Surveying and Mapping Institute of Shandong Province,Ji'nan 250013,China;2.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China);Research for the Influences of DEM Resolution on Topographical Factors——A Case Study of Mengyin County[J];Research of Soil and Water Conservation;2009-04
4 NIU Liang,YANG Qin-ke(College of Urban and Environment,Northwest University,Xi'an 710127,China);Calculation and Application of Histogram Similarity Measure in DEM Scaling[J];Research of Soil and Water Conservation;2010-03
5 YANG Qin-ke1,2,David Jupp3,GUO Wei-ling1,2,LI Rui1,2(1.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China;2.Institute of Soil and Water Conservation,Northwest A & F University,Yangling,Shaanxi 712100,China;3.CSIRO Division of Marine and Atmospheric Research,GPO Box 3023,Canberra ACT 2601);Genaralizing the Fine Resolution DEMs with Filtering Method[J];Bulletin of Soil and Water Conservation;2008-06
6 LIU Xuejun1 WANG Yanfang1 JIN Bei1(1 Key Laboratory of Virtual Geographic Environment,Ministry of Education,Nanjing Normal University,1 Wenyuan Road,Nanjing 210046,China);A Upscaling Method of Digital Elevation Model with Point Spread Function[J];Geomatics and Information Science of Wuhan University;2009-12
【Citations】
Chinese Journal Full-text Database 10 Hits
1 WANG Guang-xia,ZHANG Yin-bao,LI Jiang(Institute of Surveying and Mapping,Information Engineering University,Zheng zhou 450052,China);Research and practice of accuracy evaluation method in DEM[J];Science of Surveying and Mapping;2006-03
2 YANG Zu-qiao~1, GUO Qing-sheng~2, NIU Ji-ping~1, XIAO Xiao-hong~1(1. Dept. of computer, Huanggang Normal College, Huangzhou 438000, China; 2. Resources and Environment Institute, Wuhan University, Wuhan 430079,China);A Study on Multi-scale DEM Representation and Topographic Feature Line Extraction[J];Acta Geodaetica Et Cartographic Sinica;2005-02
3 LI Chenzhao~(1,2) SHU Hong~(1)(1 State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,129 Luoyu Road,Wuhan 430079,China;2 78155 Army PLA,16 West Shuxin Road,Chengdu 610036,China);A NOVEL METHOD OF THRESHOLD DETERMINATION OF WAVELETS COEFFICIENTS FOR ISO-CONTOUR GENERALIZATION[J];Journal of Geomatics;2006-05
4 ZHANG Cai-xia~(1,2),YANG Qin-ke~(1,2),DUAN Jian-jun~2(1.Northwest Sci-Tech University of Agriculture and Forestry,Yangling 712100,China;2.Institute of Soil and Water Conservation,Yangling 712100,China);Method for establishing high resolution digital elevation model[J];Journal of Hydraulic Engineering;2006-08
5 WU Fan 1 ZHU Guorui 1 (1 School of Resource and Environment Science,Wuhan University,129 Luoyu Road,Wuhan,China,430079);Multi-scale Representation and Automatic Generalization of Relief Based on Wavelet Analysis[J];Editoral Board of Geomatics and Information Science of Wuhan University;2001-02
6 TANG Guo'an~(1) LIU Xuejun~(1) FANG Liang~(2) LUO Mingliang~(3)(1 Jiangsu Provincial Key Lab.of Geo-informatics,Nanjing Normal University,122 Ninghai Road,Nanjing 210097,China)(2 City and Resource Department,Northwest University,229 Noth Taibai Road,Xi'an,710069,China)(3 Institute of Mountain Hazards and Environment,CAS,Block 4,9 South Renmin Road,Chengdu 610041,China);A Review on the Scale Issue in DEMs and Digital Terrain Analysis[J];Geomatics and Information Science of Wuhan University;2006-12
7 Guo Qingsheng (School of Land Science, WTUSM, 129 Luoyu Road, Wuhan, China, 430079);The Decomposement and Operators Set of Automatic Map Generalization[J];JOURNAL OF WUHAN TECHNICAL UNIVERSITY OF SURVEYING AND MAPPING(WTUSM);1999-02
8 WU Ji-tao 1 WANG Qiao 2 (1.Beijng University of Aeronautics and Astronautics, 100083; 2.Nanjing Normal University, Nanjing 210097, China);A Study on the Multi-scale Representations of the Complex Landforms Based on Two-Dimensional Wavelet Transformation[J];Journal of Remote Sensing;2003-02
9 CHEN Nan ①②③ , LIN Zong-jian ②, LI Cheng-ming ②, ZHU Hong-chun ①, XU Zeng-rang ④, TANG Guo-an ③ (①Geoinformation Science & Engineering College, Shandong University of Science and Technology, Tai'an 271019, China; ②Chinese Academy of Surveying and Mapping, Beijing 100039, China; ③Department of Urban and Resource, Northwest University, Xi'an 710069, China; ④ Institute of Geographical Sciences and Natural Resources Research,CAS,Beijing 100101,China);A Comparison of Topographic Information from Different Scales DEM s Based on Information Theory[J];Remote Sensing Information;2004-03
10 LIU Chun 1),2) , WANG Jia lin 2) , LIU Da jie 1)) 1) (Department of Surveying and Geoinformatics, Tongji University, Shanghai 200092) 2) (Scholl of Ocean and Earth Science, Tongji University, Shanghai 200092);Generalization of DEM Grid Data Based on Multi band Wavelet Analysis[J];Journal of Image and Graphics;2004-03
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 WANG Lin-song et al (School of Geographical Sciences,Southwest University,Chongqing 400715);Discussion on the Generalization Technology for Drawing Land Use Map Based on ArcGIS[J];Journal of Anhui Agricultural Sciences;2008-36
2 LU Shuang-zhen et al (Yunnan Institute for Forest Inventory and Planning,Kunming,Yunnan 650051);Analysis of Main Spatial Factors of Impacting Forest Distribution in Wuliangshan National Nature Reserve and Its Adjacent Area[J];Journal of Anhui Agricultural Sciences;2009-17
3 WAN Hou-chong et al(College of Mathematics and Computer Science,Hengshui University,Hengshui,Hebei 053000);Research about Pesticide Deinsectization System in Precision Agriculture Based on ARM_Linux[J];Journal of Anhui Agricultural Sciences;2010-16
4 YAN Hai-zhong et al(College of Life Science,Yunnan University,Kunming,Yunnan 650091);DEM Model Space Analysis on Regional Biomass Based on ARCGIS[J];Journal of Anhui Agricultural Sciences;2011-02
5 WANG Jian-feng1,2,FANG Ji-qian1 1.Institute of Surveying and Mapping,Information Engineering University,Zhengzhou,Henan 450052; 2.66240 Troops of Beijing Military Area,Beijing,100042;Study of Target Value Evaluation Indexes[J];Beijing Surveying and Mapping;2008-02
6 WANG Shao-yun(Beijing Institute of Surveying and Mapping,100038,Beijing);The Application of Irregular Triangulation Network Method in the Calculation of Earthwork Engineering[J];Beijing Surveying and Mapping;2009-02
7 ZHU Xiao-kun,YUE Jing-xian(Beijing Institute of Surveying and Mapping,Beijing,China,100038);Beijing Ming Dynasty Great Wall Measurement Based on Topographic Map Data Digging[J];Beijing Surveying and Mapping;2010-03
8 YU Bo-hu1,2,GAO Wei-chao2,LIU Li2(1.Institute of survey and mapping,Information Engineering University,ZhengZhou 450052,China; 2.Northwest Institute of technology,Xi'an 710024,China);The Research of Polyhedral Projection Based on Geocentric Coordinate System[J];Beijing Surveying and Mapping;2010-04
9 GU Ning~1;FENG Zhong-ke~1;LUO Xu~2.1 Institute of GIS,RS & GPS,Beijing Forestry University,100083,P.R.China;2 China National Institute of Metrology,Beijing,100013,P.R.China.;Digital elevation model based on aerial UAV image.[J];Journal of Beijing Forestry University;2007-S2
10 DONG Bin~(1,2,3) FENG Zhong-ke~(1,2) ZHANG Dong-you~(1,2) YAO Shan~(1,2) SUI Hong-da~(1,2) WANG Jia~(1,2) 1 Key Laboratory for Silviculture and Conservation of Ministry of Education,Beijing Forestry University,Beijing 100083,P.R.China;2 Institute of GIS,RS & GPS,Beijing Forestry University,100083,P.R.China;3 School of Science,Anhui Agricultural University,Hefei,230036,P.R.China.;Construction technology of digital and three-dimensional forest form map based on GIS.[J];Journal of Beijing Forestry University;2008-S1
China Proceedings of conference Full-text Database 10 Hits
1 ZHOU Qi-gang~1 YUAN Li-feng~2 (1.Tourism School of Chongqing Technology and Business University,Chongqing 400067,P.R.China; 2.College of Telecom.and Infor.Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,P.R.China);Study on extracting method of single slope surface shape based on DEM:taking Wanzhou district of three gorges reservoir area as example[A];[C];2007
2 Weng Wei-lin,Chen Nan;Analysis on the Effect of Resolution of Raster DEM on the Landform Factors[A];[C];2007
3 ZHANG Zhi-jin1,LI Yong-sheng2,LI Wen-mei3 (1.Shandong Institute of Surveying and Mapping of Geology, Shandong Jinan 250013;2. Shandong Read Age Information and Technology CO.LTD,Shandong Jinan 250013;3.International Institute for Earth System Science Nanjing University, Jiangsu Nanjing 210093. );The comprehensive and comparative study of topographic information capacity in different spatial scale’s DEM[A];[C];2009
4 Jin Fu~(1,2),Jianbing Chen~1,Jinzhao Zhang~1 (1.Traffic Profession Key Lab of Road Engineering for Cold Region,The First Highway Survey and Design Institute Co.Ltd,Xi'an,710068,China.;2.Chang'an University,Xi'an 710064,China);Design and Development of Scientific Research Management and Data Analysis System in Qinghai-Tibet Highway[A];[C];2009
5 ZHOU Xiao-ming1,2,TANG DE-jin3, XU Xiao-liang1, WANG Nan4,YU Chang5 (1. Institute of Surveying and Mapping, Information Engineering University,Zhengzhou 450052,China; 2. Key Laboratory of Mine Spatial Information Technologies(Henan Polytechnic University ,Henan Bureau of Surveying & Mapping),State Bureau of Surveying and Mapping,Jiaozuo 454000, China;3. 61135Troops,Beijing 102211,China; 4. 61646Troops,Beijing 100192,China;5. 96633Troops,Beijing 100096,China;);The Noise Points detection Based on Airborne LIDAR point cloud data[A];[C];2010
6 GUO Li-xin1,2,ZHAI Jing-sheng3 CHEN Chang-lin1 (1.Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052, China; 2.Dalian Nautical Academy, Dalian, Liaoning, 116018, China; 3.Nautical Institute of Hydrographic Surveying and Charting, Tianjin, 300061, China);Research of Construction and Cognition for Nautical Chart Symbols[A];[C];2010
7 WANG Xiao-li1, 2 (1. Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450052, China; 2. Institute of Information Engineering, Information Engineering University, Zhengzhou 450002, China);On-the-fly Smoothing Method Improving Multi-scale Representation of Lines[A];[C];2010
8 LI Dongyue,LI Wenqi,LI Ming (The Academy of Equipment Command & Technology;Beijing;101416);Study of the Algorithms for Visual Analysis of GIS Based on Digital Elevation Model Data of Grid[A];[C];2010
9 Wang Li-qi Du Mao (Institute Of Integrated Automation,Xi'an Jiaotong University,Xi'an,710049);Obstacle Detection for Intelligent Vehicle Based on Laser Radar[A];[C];2010
10 Yuexiang Leng,Suilao Li,Chenzhi Zhao Dept.of Precise Instrument and Mechanics Northwestern Polytechnical University Xi'an,China;Self-Adaptive Data Compression Based on the Infinite-Circle Approximating Applied in making electronic map[A];[C];2010
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 HAO Zhen-chun,CHI Chen-xing niversity, Nanjing Jiangsu 210098, China);The Effect of Spatial Resolution and Sampling Method on the Watershed Features Derived from DEM[J];Journal of Glaciology and Geocryology;2004-05
2 BI Hua-xing 1,2; TAN Xiu-ying 3; LI Xiao-yin 1,2. 1 College of Soil and Water Conservation, Beijing Forestry University, Key Laboratory of Soil and Water Conservation & Desertification Combating, Ministry of Education,100083, P.R. China; 2 Soil and Water Conservation Service, Qingcheng County, Gansu Province, 745100,P.R.China.;Digital terrain analysis based on DEM.[J];Journal of Beijing Forestry University;2005-02
3 WANG Ming-chang~(1,2),GU Lan-ying~(1),WANG Yu~(1),LI Jian-ping~(3)(1.College of GeoExploration Science and Technology,Jilin University, Changchun 130026,China;2.Institue of Mineral Resources Appraisal of Synthetic Information,Jilin University,Changchun 130026,China;3.Northeast Institute of Geography and Agriculture Ecology,C A S,Changchun 130012,China);Study of Linear Elements Cartographic Generalization of Wavelet Analysis Method[J];Journal of Jiling University (Earth Science Edition);2005-S1
4 CHEN Nan, LIN Zong-jian, LI Cheng-ming, TANG Guo-an, XU Zeng-rang (Geoinformation Science & Engineering College, Shandong University of Science and Technology, Tai'an 271019, China; Chinese Academy of Surveying and Mapping,Beijing 100039,China; Department of Urban and Resource, Northwest University,Xi'an 710069,China);A comparison on DEM of different scale in loess hill and gully area[J];Science of Surveying and Mapping;2004-03
5 XIAO Zhi-gang~①,WANG Liang~②,TIAN Li-fang~①(①China University of Mining & Technology,Beijing,100083,China;②Chinese Academy of Surveying and Mapping,Beijing 100039,China);Application research of wavelet analysis in GIS[J];Science of Surveying and Mapping;2005-01
6 YING Shen①,LI Lin①,WANG Ming-chang②,ZHAI Liang①(①School of Resource and Environment,Wuhan University,Wuhan 430070,China;②College of Geoexploration of Science and Technology,JiLin University,Changchun,130026);Applications of computational geometry in Map generalization[J];Science of Surveying and Mapping;2005-03
7 YANG Qin-ke~(①),Tim R.McVicar~(②),Tom,G.Van Niel~(③),Mike Hutchinson~(④),LI Ling-tao~(②)(①Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling 712100,China;②CSIRO Land and Water,GPO Box 1666,Canberra,2601,ACT,Australia;③CSIRO Land and Water,Private Bag No.5,Wembley,6913,WA,Australia;④Centre for Resource and Environmental Studies,Australian National University,Canberra,0200,ACT,Australia);Generating a hydrologically correct DEM with ANUDEM in the Loess Plateau of China[J];Science of Surveying and Mapping;2006-06
8 FAN Qing-song①,TANG Cui-lian②,HU Peng①(① School of Resource and Environment Science,Wuhan University,Wuhan 430079,China;② Changjiang Institute of Survey,Planning,Design & Research of CWRC,Wuhan 430010,China);A quantitive approach for accuracy assessment of DEMs by comparing derived contour maps with original ones[J];Science of Surveying and Mapping;2008-03
9 WANG Dong-hua,JI Jian-pei,LIU Jian-jun,SHANG Yao-ling,WANG Zhong-xiang (National Geomatics Center of China,Beijing100044,China);Design and Establishment of National 1:50 000 Digital Elevation Model Database[J];Research Soft-Science of Surveying and Mapping;2003-02
10 LI Zhi-lin (Department of Land Surveying and Geo-Informatics,The Hong Kong Polytechnic University,Hong kong,China);A Theoretical Discussion on the Scale Issue in Geospatial Data Handling[J];Geomatics World;2005-02
【Secondary References】
Chinese Journal Full-text Database 8 Hits
1 YANG Qin-ke1,2,ZHAO Mu-dan1,LIU Yong-mei1,WANG Lei1,LI Rui2(1.Northwest University,Xi'an 710069,China;2.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling 712100,China);Application of DEMs in Regional Soil Erosion Modeling[J];Geomatics World;2009-01
2 YANG Xin,TANG Guoan,LIU Xuejun,LI Fayuan,ZHU Shijie (Key laboratory of Virtual Geograpgic Environment of Ministry of Education,Nanjing Normal University,Nanjing 210046,China);Digital Terrain Analysis:Theory,Method and Application[J];Acta Geographica Sinica;2009-09
3 WANG Feng1,WANG Chun-mei2 (1.Surveying and Mapping Institute of Shandong Province,Ji'nan 250013,China;2.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China);Research for the Influences of DEM Resolution on Topographical Factors——A Case Study of Mengyin County[J];Research of Soil and Water Conservation;2009-04
4 NIU Liang,YANG Qin-ke(College of Urban and Environment,Northwest University,Xi'an 710127,China);Calculation and Application of Histogram Similarity Measure in DEM Scaling[J];Research of Soil and Water Conservation;2010-03
5 LIU Hong-yan1,YANG Qin-ke2,3,NIU Liang2,WANG Chun-mei 3,LI Jun1(1.College of Resources and Environment,Northwestern A&F University,Yangling,Shaanxi 712100,China;2.College ofUrban and Environmental Science,Northwest University,Xi'an710069,China;3.Institute of Soil and Water Conservation,Chinese Academy of Sciences And Ministry of Water Resources,Yangling,Shaanxi 712100,China);Relationships between DEM-derived Slope and Horizontal Resolution[J];Research of Soil and Water Conservation;2010-04
6 GU Yun-he,YANG Qin-ke,LUO Yi-ning,WANG Lei,WANG Yi(College of Urban and Environment Sciences,Northwest University,Xi'an 710127,China);Representation of Eroded Geomorphological Features on the Digital Elevation Model(DEM)[J];Research of Soil and Water Conservation;2011-02
7 LI Jun1,YANG Qin-ke2,DU Ji-long3,LIU Hong-yan1,CHENG Lin1(1 College of Resources and Environment,Northwest A&F University,Yangling,Shaanxi 712100,China;2 College of City and Environment,Northwest University,Xi'an,Shaanxi 710069,China;3 Department of Environmental Engineering,Gansu Forestry Technological College,Tianshui,Gansu 741020,China);Establishment and evaluation of hydrologically correct DEM in Shaanxi Province[J];Journal of Northwest A & F University(Natural Science Edition);2010-11
8 YANG Qin,SUN Jinshui,LI Tianhong (Key Laboratory of Water and Sediment Science,Ministry of Education,Peking University,Beijing 100871,China);Soil Erosion Assessment under Various Scales and Scale Effects[J];Journal of Basic Science and Engineering;2011-S1
【Secondary Citations】
Chinese Journal Full-text Database 10 Hits
1 YANG Wei, SUN Yun-sheng (College of GeoExploration Science and Technology, Jilin University,Changchun130026,China);Multi-resolution Analysis Model and View Correlation Three-dimension Terrain Display Based on Biothogonal Compact Wavelet[J];Journal of Jiling University (Earth Science Edition);2005-02
2 TANG Guo an ①,YANG Wei ying ②,YANG Xin ①,LIU Ai li ①,YI Hong wei ①,LI Xiao yin ①(①Department of Urban and Resource Science of Northwest University, Xi'an 710069,China;②Department of Applied Geophysics of China University of Geosciences, Wuhan 430074, China);Some Key Points in Terrain Variables Deriving from DEMs[J];Science of Surveying and Mapping;2003-01
3 SHEN Tao, SU Shan wu (Chinese Academy of Surveying and Mapping, Beijing 100039, China);Study of the multi-scale display of river based on DEM[J];Science of Surveying and Mapping;2003-02
4 CHEN Nan, LIN Zong-jian, LI Cheng-ming, TANG Guo-an, XU Zeng-rang (Geoinformation Science & Engineering College, Shandong University of Science and Technology, Tai'an 271019, China; Chinese Academy of Surveying and Mapping,Beijing 100039,China; Department of Urban and Resource, Northwest University,Xi'an 710069,China);A comparison on DEM of different scale in loess hill and gully area[J];Science of Surveying and Mapping;2004-03
5 WANG Dong-hua,JI Jian-pei,LIU Jian-jun,SHANG Yao-ling,WANG Zhong-xiang (National Geomatics Center of China,Beijing100044,China);Design and Establishment of National 1:50 000 Digital Elevation Model Database[J];Research Soft-Science of Surveying and Mapping;2003-02
6 LI Da jun, GONG Jian ya, ZOU Shi lin, DU Dao sheng;Entropy Uncertainty of Unknown Distribution Error[J];Bulletin of Surveying and Mapping;2002-12
7 WU Ji tao 1, WANG Qiao 2 (1. Department of Mathematics Beijing University of Aviation and Space,Beijing, 100083; 2.College of Geographical Sciences Nanjing Normal University,Nanjing, Jiangsu,210097);A Study on Automatic Cartographic Generalization Using Wavelet Analysis in GIS[J];ACTA GEODAETICA ET CARTOGRAPHIC SINICA;2000-01
8 TANG Guo an 1, GONG Jian ya 2, CHEN Zheng jiang 1, CHENG Yan hui 1, WANG Zhan hong 1 (1. Department of Geography,Northwest University, Xi'an 710069,China; 2. National Laboratory for Information Engineering in Survey, Mapping and Remote Sensing;A Simulation on the Accuracy of DEM Terrain Representation[J];Acta Geodaetica Et Cartographic Sinica;2001-04
9 WANG Guang-xia~1, ZHU Chang-qing~(1,2), SHI Wen-zhong~3, ZHANG Guo-qin~2(1. Zhengzhou Institute of Surveying and Mapping, Zhengzhou 450052, China; 2.Institute of Geodesy and Geophysics, Chinese Academy of Science, Wuhan 430077, China; 3. Advanced Research Centre for Spatial Information Technology, Department of Land Surveying and Geo-Informatics, The Hongkong Polytechnic University, Hong Kong,China);The Further Study on the Accuracy of DEM Terrain Representation[J];Acta Geodaetica Et Cartographic Sinica;2004-02
10 Wan Gang ①② , Zhu Changqing ①② (① Zhengzhou Institute of Surveying and Mapping,Zhengzhou,450052) (② State Key Laboratory of CAD & CG, Zhejiang University, Hangzhou, 310027);Application of multi band wavelet on simplifying DEM with lose of feature information[J];ACTA GEODAETICA ET CARTOGRAPHIC SINICA;1999-01
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