2012 Second International Workshop on Earth Observation and Remote Sensing Applications最新文献

Landslide monitoring by PS-InSAR along Qing river PS-InSAR在清江滑坡监测中的应用

2012 Second International Workshop on Earth Observation and Remote Sensing Applications Pub Date : 2012-06-08 DOI: 10.1109/EORSA.2012.6261172

Ma Nengwu, Chen Weiyan, Lin Shuangping, Zheng Min, H. Ping, Jin Zonghuang, Wu Wenhao, L. Tao

引用次数: 3

Estimation of changes in urban ecosystem service values from remote sensing data in Guangzhou, China 基于遥感数据的广州城市生态系统服务价值变化估算

2012 Second International Workshop on Earth Observation and Remote Sensing Applications Pub Date : 2012-06-08 DOI: 10.1109/EORSA.2012.6261141

Y. Xiong, Changbai Zhu, Fenglei Fan

{"title":"Estimation of changes in urban ecosystem service values from remote sensing data in Guangzhou, China","authors":"Y. Xiong, Changbai Zhu, Fenglei Fan","doi":"10.1109/EORSA.2012.6261141","DOIUrl":"https://doi.org/10.1109/EORSA.2012.6261141","url":null,"abstract":"Based on three TM/ETM+ images of Guangzhou acquired in the winters of 1995, 2000 and 2009, land use/land cover (LULC) changes and the corresponding changes of ecosystem service value (ESV) in Guangzhou were estimated by using the artificial neural network (ANN) classifier and ESV coefficients of Xie et al. Results show that the annual total ESVs of Guangzhou were $1248.53, 1255.20, 1287.58 million in 1995, 2000 and 2009, with increases of $6.67 million from 1995 to 2000, $32.38 million from 2000 to 2009, and $39.25 million from 1995 to 2009, respectively. The annual average increasing rate was on average 0.24% during the study period. The combined ESV of woods land and water body together was more than 82.5% of the annual total values of Guangzhou in the three dates. The ESVs of gas regulation, climate regulation, water conservation, waste treatment, biodiversity protection, raw material and recreational culture functions increased while the ESVs of soil formation and conservation and food production functions decreased from 1995 to 2009. It is suggested that the LULC changes were mainly responsible for the ESV changes in Guangzhou and a sound land use planning should be taken effectively for sustainable urban development in Guangzhou.","PeriodicalId":132133,"journal":{"name":"2012 Second International Workshop on Earth Observation and Remote Sensing Applications","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122901105","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

Estimation of urban vegetation fraction from HJ-1B CCD data: Methods and comparison 基于HJ-1B CCD数据的城市植被覆盖度估算:方法与比较

2012 Second International Workshop on Earth Observation and Remote Sensing Applications Pub Date : 2012-06-08 DOI: 10.1109/EORSA.2012.6261176

Feng Chen, Y. Ren, Xiaofeng Zhao

{"title":"Estimation of urban vegetation fraction from HJ-1B CCD data: Methods and comparison","authors":"Feng Chen, Y. Ren, Xiaofeng Zhao","doi":"10.1109/EORSA.2012.6261176","DOIUrl":"https://doi.org/10.1109/EORSA.2012.6261176","url":null,"abstract":"Urban vegetation is an important contributor to the quality of urban environment and habitat situation. Researches on estimating urban vegetation fraction (UVF) accurately from remotely sensed imageries have been conducted massively and widely. However, in view of obtaining UVF and its spatio-temporal dynamics, shortcomings are still there in these widely used data, which are acquired by sensors, including Terra/Acqua MODIS, NOAA AVHRR, SPOT and Landsat series (e.g.1–5, 7). Therefore, it is desirable to exploit the usage of other kind of data, observed by the newly launched China satellites (e.g. HJ-1A/B, CBERS) for those issues. These data also are provided freely to the common users. In this paper, the possibility was evaluated that using HJ-1B CCD multispectral data for estimating UVF with optimal and practical methods. Two methodologies were discussed and compared, which specifically were based on vegetation index (VI) and spectral mixture analysis (SMA). Findings in this paper demonstrate that UVF was able to be obtained accurately through both the VI method (e.g. based on NDVI, SAVI, and EVI) and the SMA. Although the SMA performed superiorly to the VI method, results modeled from both methods were parallel with those obtained from Landsat TM/ETM+ (in previous practices). Our research suggests that these new satellites, including HJ-1A/B, can provide the useful data sources for monitoring urban environment, with both high spatial and temporal resolution.","PeriodicalId":132133,"journal":{"name":"2012 Second International Workshop on Earth Observation and Remote Sensing Applications","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114269340","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

Evaluation of Harmonic Analysis of Time Series (HANTS): impact of gaps on time series reconstruction 时间序列谐波分析的评价:间隙对时间序列重构的影响

2012 Second International Workshop on Earth Observation and Remote Sensing Applications Pub Date : 2012-06-08 DOI: 10.1109/EORSA.2012.6261129

Jie Zhou, L. Jia, G. Hu, M. Menenti

{"title":"Evaluation of Harmonic Analysis of Time Series (HANTS): impact of gaps on time series reconstruction","authors":"Jie Zhou, L. Jia, G. Hu, M. Menenti","doi":"10.1109/EORSA.2012.6261129","DOIUrl":"https://doi.org/10.1109/EORSA.2012.6261129","url":null,"abstract":"In recent decades, researchers have developed methods and models to reconstruct time series of irregularly spaced observations from satellite remote sensing, among which the widely used Harmonic Analysis of Time Series (HANTS) method. Many studies based on time series reconstructed with HANTS documented the excellent performance of this method. While some limitations of HANTS have been noticed in these applications, there is no dedicated study on a systematic evaluation on the performance of the HANTS method. In this study, we evaluated the impact of gaps on the time series reconstruction of NDVI by HANTS. For global representativeness, a simulated NDVI time series dataset was constructed for four generic patterns and was applied as a reference dataset. Then random gaps were introduced into the reference series and both the reference and gapped series were reconstructed by harmonic analysis. The deviations between the two reconstructed results were used to evaluate statistically the accuracy of harmonic analysis under different gap conditions. The size of maximum gap (MGS), the number of loss (NL) and the number of gaps (NG) were selected to parameterize the gap distribution. The results showed that MGS, NL and NG were significant factors in the process of reconstruction and the two terminals and the peak of the series are crucial positions. MGS and NL should not be too large in the time series for all seasonal or non-seasonal case; otherwise the reconstructed series is not reliable. These conclusions can be taken as a reference to indicate the reliability of HANTS for particular cases towards the definition of a quality indicator of any time series.","PeriodicalId":132133,"journal":{"name":"2012 Second International Workshop on Earth Observation and Remote Sensing Applications","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129920675","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: 14

Estimation of planted forest leaf area index from TM imagery using the algorithm based on geometric-optical model 基于几何光学模型的TM影像人工林叶面积指数估算方法

2012 Second International Workshop on Earth Observation and Remote Sensing Applications Pub Date : 2012-06-08 DOI: 10.1109/EORSA.2012.6261171

Hanyue Chen, Zheng Niu, Bo Gao, Wenjing Huang

{"title":"Estimation of planted forest leaf area index from TM imagery using the algorithm based on geometric-optical model","authors":"Hanyue Chen, Zheng Niu, Bo Gao, Wenjing Huang","doi":"10.1109/EORSA.2012.6261171","DOIUrl":"https://doi.org/10.1109/EORSA.2012.6261171","url":null,"abstract":"Global leaf area index (LAI) products such as MODIS LAI product et al. have relatively low spatial resolution (250m–7km) and can not meet the needs of high spatial resolution remote sensing applications. Therefore, it is necessary to explore the feasibility of the algorithm based on physical model for LAI retrieval using high spatial resolution remote sensing imagery. This study utilized the algorithm based on Four-scale model to derive LAI in planted forest from TM imagery. A set of land cover type dependent relationships between LAI and Simple Ratio (SR) are provided for various solar and view anlges. Bidirectional reflectance distribution function (BRDF) and clumping representation at canopy scale are both considered in the algorithm. The empirical model using NDVI as predicted variable is also considered for LAI estimation. A validation study was conducted with in-situ measurements of LAI in planted forest from Zhangye, Gansu province. Better accuracy in LAI prediction was observed from the inversion algorithm based on Four-scale model (R2=0.67, RMSE=0.50) than that from NDVI (R2=0.59, RMSE=0.67) compared with measured LAI, especially when LAI > 2.00. Moreover, the sensitivity analysis of inversed LAI to bands reflectance was carried out. LAI was more sensitive to reflectance at red band (ρred) than that at near infrared band (ρnir), with uncertainty value of reflectance range from −10% to −30%. This study prove the effectiveness of the algorithm based on Four-scale model in LAI estimation from TM imagery in planted forest and will be helpful in further developing physical models for high spatial resolution LAI retrieval.","PeriodicalId":132133,"journal":{"name":"2012 Second International Workshop on Earth Observation and Remote Sensing Applications","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121405837","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

Voxel-based Marked Neighborhood Searching method for identifying street trees using Vehicle-borne Laser Scanning data 基于体素标记邻域搜索的车载激光扫描行道树识别方法

2012 Second International Workshop on Earth Observation and Remote Sensing Applications Pub Date : 2012-06-08 DOI: 10.1109/EORSA.2012.6261193

Bin Wu, Bailang Yu, Wenhui Yue, Jianping Wu, Yan Huang

{"title":"Voxel-based Marked Neighborhood Searching method for identifying street trees using Vehicle-borne Laser Scanning data","authors":"Bin Wu, Bailang Yu, Wenhui Yue, Jianping Wu, Yan Huang","doi":"10.1109/EORSA.2012.6261193","DOIUrl":"https://doi.org/10.1109/EORSA.2012.6261193","url":null,"abstract":"As an important method for acquiring close-range three-dimensional (3D) data of cities, Vehicle-borne Laser Scanning (VLS) system provide an efficient technique for acquiring 3D information of different objects on the two sides of urban streets. Segmenting and identifying different types of urban street objects from laser scanning point cloud data are urgent issues for the VLS applications. This paper presents a new Voxel-based Marked Neighborhood Searching (VMNS) method for identifying street trees and measuring their morphological parameters from VLS data. The VMNS method includes following five steps, including voxelization, setting voxel value, neighborhood search and mark, computing the biophysical parameters, and eliminating other pole-like objects. The feasibility of the method is proved through a case study. The results show most of the laser points that constitute an individual tree are identified and extracted correctly. The errors of derived biophysical parameters are analyzed by compared with the in situ measurement data. The paper shows that our VMNS method is effective for the street trees identification from VLS data.","PeriodicalId":132133,"journal":{"name":"2012 Second International Workshop on Earth Observation and Remote Sensing Applications","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115325840","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

Integration of vector and raster-based coal mines surface and underground contrast map 基于矢量和栅格的煤矿地表和地下对比图集成

2012 Second International Workshop on Earth Observation and Remote Sensing Applications Pub Date : 2012-06-08 DOI: 10.1109/EORSA.2012.6261189

Changxiong Wang, Shanjun Mao, Mei Li, HuiYi Bao, Ying Zhang

引用次数: 1

Information extraction method on coastal wetland using TM data: A case study in Dongying, Shandong, China 基于TM数据的滨海湿地信息提取方法——以山东东营为例

2012 Second International Workshop on Earth Observation and Remote Sensing Applications Pub Date : 2012-06-08 DOI: 10.1109/EORSA.2012.6261139

Kun Shang, Xiaohong Zhang, Z. Dong, Xukai Zhang

{"title":"Information extraction method on coastal wetland using TM data: A case study in Dongying, Shandong, China","authors":"Kun Shang, Xiaohong Zhang, Z. Dong, Xukai Zhang","doi":"10.1109/EORSA.2012.6261139","DOIUrl":"https://doi.org/10.1109/EORSA.2012.6261139","url":null,"abstract":"As one of the most important ecosystems in the earth, wetlands need to be sufficiently protected from human interference. However, many wetlands in the world are degrading rapidly recent years, especially in China. The traditional method of monitoring wetlands by using field survey costs too much labor force and time. Nowadays, Remote Sensing data have been widely used in the researches of wetlands as the main data. This study was performed to propose an improved method of wetlands information extraction by using TM data. And an improved Maximum Likelihood method was proposed to obtain wetlands distribution more accurately with less noise. The wetlands distribution information and landscape parameters were extracted based on classification results of different years. Dongying City, located in the Yellow River delta, was chosen as the study area. The results showed the alteration of areas and landscape pattern of wetlands in Dongying from 2007 to 2010 and also revealed that this improved classification method could obtain wetlands distribution and landscape parameters effectively. The impact factors resulting in the wetlands alteration were also discussed to offer a reference for wetlands protection.","PeriodicalId":132133,"journal":{"name":"2012 Second International Workshop on Earth Observation and Remote Sensing Applications","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115737110","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

The method of assessing shape similarity of object-based classification result of remote sensing imagery 基于地物的遥感影像分类结果形状相似性评估方法

2012 Second International Workshop on Earth Observation and Remote Sensing Applications Pub Date : 2012-06-08 DOI: 10.1109/EORSA.2012.6261156

X. Ji, Yanchen Bo, Jiehai Cheng, Yaqian He, Xiaolong Liu

引用次数: 2

Reflectance spectra of Entermorpha In the whole life cycle Entermorpha整个生命周期的反射光谱

2012 Second International Workshop on Earth Observation and Remote Sensing Applications Pub Date : 2012-06-08 DOI: 10.1109/EORSA.2012.6261187

Li Zhou, Xia Lu

{"title":"Reflectance spectra of Entermorpha In the whole life cycle","authors":"Li Zhou, Xia Lu","doi":"10.1109/EORSA.2012.6261187","DOIUrl":"https://doi.org/10.1109/EORSA.2012.6261187","url":null,"abstract":"Reflectance spectra of Entermorpha were the basis of dynamically monitoring Entermorpha hazard in a large scale by remote sensing technology. Reflectance spectra of Entermorpha vary under different development periods due to great differences in their physical, chemical and biological properties. To explore the changes of reflectance spectra of Entermorpha through its whole life cycle, we collected Entermorpha from Huangwo, LianYunGang. The whole life cycle here was defined as from spore period, seedling period, maturation period, to death period. The reflectance spectra of Entermorpha in the whole life cycle were measured by ASD FieldSpec HandHeld spectrometer. Based on these reflectance spectra data, the reflectance spectra of Entermorpha during the whole life cycle were extracted by spectra morphology method. The results indicated that during the spore period, the measured reflectance spectra actually was the reflectance of sea water because the spore of Entermorpha could not identified by naked eye. During the seedling period, the peak and valley of reflectance spectra was not very obvious because of narrow length and width of Entermorpha. Weak peak and valley reflectance spectra were observed until the length reached 8 cm and the width reached 1.5 mm. During the maturation period, reflectance spectra had conspicuous peak and valley, however the whole reflectivity was very low, which was less than 0.3. During the death period, the absorption valley in the red light band, one of the reflectance spectra characteristics of Entermorph tended to decrease.","PeriodicalId":132133,"journal":{"name":"2012 Second International Workshop on Earth Observation and Remote Sensing Applications","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127473452","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