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基于富客戶端技術(shù)的地表覆蓋網(wǎng)絡(luò)化交互驗(yàn)證系統(tǒng)設(shè)計(jì)與實(shí)現(xiàn)

發(fā)布時(shí)間:2018-11-06 07:32
【摘要】:地表覆蓋及變化作為人類社會經(jīng)濟(jì)活動的產(chǎn)物,直接影響著地表環(huán)境和地理地貌等,是全球變化研究、氣候變化預(yù)測、生態(tài)環(huán)境評估、地理國情監(jiān)測、宏觀調(diào)控分析等不可或缺的重要基礎(chǔ)信息。目前的地表覆蓋信息都是通過遙感影像獲取,然后由專業(yè)技術(shù)人員進(jìn)行解譯,制圖,發(fā)布在網(wǎng)上。由于地理環(huán)境的復(fù)雜性,,地貌的多樣性,有些影像無法確認(rèn)甚至確認(rèn)錯(cuò)誤,而且專業(yè)技術(shù)人員去現(xiàn)場又不太現(xiàn)實(shí),所以需要社會大眾共同參與,交流互動,來完成數(shù)據(jù)的檢核,達(dá)到能被用戶使用,為廣大用戶服務(wù)的目的。 針對這個(gè)問題,本文研究的重點(diǎn)是采集樣本,收集數(shù)據(jù),跟地表覆蓋網(wǎng)絡(luò)化交互驗(yàn)證系統(tǒng)結(jié)合,在網(wǎng)絡(luò)上提供平臺,供社會大眾參與,互相交流,共同驗(yàn)證數(shù)據(jù)的可靠性,為此做了以下研究工作: (1)分析交互驗(yàn)證系統(tǒng)在地表覆蓋變化信息服務(wù)中的需求,指出了傳統(tǒng)的Web服務(wù)模型在變化信息識別、交流互動、數(shù)據(jù)驗(yàn)證方面存在的缺陷;在對國內(nèi)外相關(guān)研究現(xiàn)狀分析的基礎(chǔ)上,提出了基于富客戶端技術(shù)的網(wǎng)絡(luò)化手段、驗(yàn)證數(shù)據(jù)標(biāo)準(zhǔn)分析、數(shù)據(jù)庫的設(shè)計(jì)等問題。 (2)針對網(wǎng)絡(luò)化交流互動問題,本文采用基于富客戶端技術(shù)的結(jié)構(gòu)框架。對富客戶端技術(shù)和開發(fā)進(jìn)行了介紹和分析,以及所包括的內(nèi)容,并且提出了需要采用哪種方法來實(shí)現(xiàn);Web2.0技術(shù)是對空間型博客有重要支撐作用,也是解決了用戶之間互動性的問題。 (3)針對地理地貌特征的復(fù)雜多樣性,對于地表覆蓋信息,本文提出了驗(yàn)證數(shù)據(jù)的分類標(biāo)準(zhǔn);總體上可以分為四大類,分別是人造覆蓋、水體、耕地、裸地、林、灌、草;對每一類的典型形態(tài)和影像特征進(jìn)行了分析,為驗(yàn)證數(shù)據(jù)提供了參考標(biāo)準(zhǔn)。 (4)本文數(shù)據(jù)庫采用SQLServer2005,在數(shù)據(jù)庫設(shè)計(jì)上分為用戶權(quán)限數(shù)據(jù)庫和驗(yàn)證數(shù)據(jù)數(shù)據(jù)庫;用戶權(quán)限數(shù)據(jù)庫采用基于角色訪問控制方法,E-RBAC模型,用戶,角色,用戶組,權(quán)限;驗(yàn)證數(shù)據(jù)數(shù)據(jù)庫在設(shè)計(jì)上考慮了用戶的層級,數(shù)據(jù)的來源與質(zhì)量問題,并預(yù)留了可擴(kuò)展空間,解決了地表覆蓋信息的驗(yàn)證問題。 (5)在以上研究內(nèi)容的基礎(chǔ)上,開發(fā)出了地表覆蓋網(wǎng)絡(luò)化交互驗(yàn)證系統(tǒng)。采用微軟的Visual Studio2008作為開發(fā)平臺和開發(fā)環(huán)境,ASP.NET和C#作為開發(fā)語言,實(shí)現(xiàn)了網(wǎng)絡(luò)化標(biāo)注、地圖瀏覽、用戶之間交流互動,并以長春市朝陽公園水體為例,在數(shù)據(jù)驗(yàn)證方面取得了比較理想的效果,并改進(jìn)了專業(yè)技術(shù)人員參與的機(jī)制。 通過實(shí)驗(yàn)得出,地表覆蓋網(wǎng)絡(luò)化交互驗(yàn)證系統(tǒng)在多用戶共同參與下,能夠明顯看出水體的減少,以及參考評論和打分,基本實(shí)現(xiàn)了遙感數(shù)據(jù)的驗(yàn)證。
[Abstract]:As a product of human social and economic activities, land surface cover and change directly affect the surface environment and geographical landforms. They are the research of global change, the prediction of climate change, the assessment of ecological environment, the monitoring of geographical national conditions, etc. Macro-control analysis and other essential basic information. At present, land cover information is obtained from remote sensing images, then interpreted, mapped and posted online by professional technicians. Because of the complexity of the geographical environment and the diversity of the landforms, some images cannot confirm or even confirm errors, and it is not very realistic for professional and technical personnel to go to the scene, so it is necessary for the community to participate and interact with each other in order to complete the verification of the data. Can be used by users, for the purpose of serving the majority of users. In order to solve this problem, the focus of this paper is to collect samples, collect data, combine with the interactive verification system of surface covering network, provide a platform on the network for the participation of the public, exchange with each other, and jointly verify the reliability of the data. The following research work is done: (1) analyze the requirement of interactive verification system in land cover change information service, and point out the defects of traditional Web service model in change information identification, exchange interaction and data verification; Based on the analysis of the current research situation at home and abroad, the network means based on rich client technology, the analysis of verification data standard, the design of database and so on are put forward. (2) aiming at the problem of network communication and interaction, this paper adopts a framework based on rich client technology. The rich client technology and development are introduced and analyzed, as well as the contents included. Web2.0 technology plays an important role in supporting spatial blog, and it also solves the problem of interaction between users. (3) in view of the complex diversity of geographical and geomorphologic features, this paper puts forward a classification standard for the ground cover information, which can be divided into four categories: artificial cover, water body, cultivated land, bare land, forest, irrigation, grass; The typical morphology and image features of each class are analyzed, which provides a reference standard for verifying the data. (4) the database of this paper is divided into user authority database and authentication database in database design by using SQLServer2005, the user permission database adopts role-based access control method, E-RBAC model, user, role, user group, permission; In the design of the verification database, the user level, the source and the quality of the data are considered, and the extensible space is reserved to solve the verification problem of the surface coverage information. (5) based on the above research contents, a networked interactive verification system for surface cover is developed. Using Microsoft's Visual Studio2008 as the development platform and environment, ASP.NET and C # as the development language, realizing the network marking, map browsing, and the interaction between users, and taking the water body of Chaoyang Park in Changchun as an example. In the aspect of data verification, the better results are obtained, and the mechanism of professional and technical personnel participation is improved. The experimental results show that the surface cover networked interactive verification system with the participation of multiple users can clearly see the decrease of water body, as well as the reference comments and marks, and basically realize the verification of remote sensing data.
【學(xué)位授予單位】:吉林大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2013
【分類號】:P208

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