發(fā)布時間：2018-02-25 18:19

  本文關(guān)鍵詞： 地理空間元數(shù)據(jù) 信息可視化 地理空間元數(shù)據(jù)可視化 元數(shù)據(jù)服務(wù) 可視化映射 可視化評價　出處：《解放軍信息工程大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：地理空間元數(shù)據(jù)是空間信息基礎(chǔ)設(shè)施的核心內(nèi)容之一，傳統(tǒng)的空間元數(shù)據(jù)服務(wù)在模式和效率上的缺陷，阻礙了地理信息資源的共享和普及。地理空間元數(shù)據(jù)可視化是信息可視化與元數(shù)據(jù)服務(wù)的有效結(jié)合，將會改進服務(wù)模式，提高可用性。本文基于信息可視化技術(shù)的特點，研究了地理空間元數(shù)據(jù)可視化的基本理論和實現(xiàn)方法，主要內(nèi)容如下： （1）從系統(tǒng)概念出發(fā)，分析了傳統(tǒng)的元數(shù)據(jù)服務(wù)在模式和效率上存在的不足，為本文的研究奠定了必要性基礎(chǔ)。總結(jié)了信息可視化的技術(shù)和特點，并結(jié)合元數(shù)據(jù)檢索的使用背景，研究了地理空間元數(shù)據(jù)單要素和多要素可視化方法及適用條件。 （2）按照元數(shù)據(jù)服務(wù)模型中對象、用戶和工具的構(gòu)成要素，設(shè)計了地理空間元數(shù)據(jù)可視化的實現(xiàn)流程；總結(jié)了各個階段的步驟和功能，構(gòu)建了地理空間元數(shù)據(jù)可視化的邏輯模型。 （3）研究了地理空間元數(shù)據(jù)可視化設(shè)計的主要內(nèi)容。首先形成了用戶、任務(wù)和元數(shù)據(jù)規(guī)格參數(shù)的三因素影響模型；總結(jié)已有的研究資料和分析現(xiàn)有服務(wù)平臺的特點，細化了各項影響因素的具體內(nèi)容。其次設(shè)計了用戶與可視化界面、可視化視圖之間兩個方面的交互方式。最后提出了地理空間元數(shù)據(jù)可視化的應(yīng)用模式，并與傳統(tǒng)的元數(shù)據(jù)服務(wù)比較，分析了可視化模式的特點和優(yōu)勢。 （4）重點研究了地理空間元數(shù)據(jù)可視化的實現(xiàn)過程。首先為建立元數(shù)據(jù)庫，確定了元數(shù)據(jù)的表達形式、服務(wù)模式以及預(yù)處理步驟和存儲模式等。其次為解決海量數(shù)據(jù)的有效顯示，，從數(shù)據(jù)層次組織、空間關(guān)聯(lián)屬性獲取和多樣化檢索方式三個方面來篩選過濾數(shù)據(jù)。研究了可視化的映射過程，建立了元數(shù)據(jù)信息與可視化因素的相互映射關(guān)系，實現(xiàn)了數(shù)據(jù)的定性與定量化表示。最后對三種主要的可視化技術(shù)，實現(xiàn)了繪制和交互算法。 （5）實現(xiàn)了地理空間元數(shù)據(jù)可視化的原型系統(tǒng)，提出并細化了可視化評價的內(nèi)容和指標(biāo)，并在實驗中進行了量化分析。從任務(wù)需求和用戶兩個方面，對比傳統(tǒng)模式進行了評價測試，總結(jié)了系統(tǒng)存在的不足和改進方向。
[Abstract]:Geo-spatial metadata is one of the core contents of spatial information infrastructure. Geospatial metadata visualization is an effective combination of information visualization and metadata service, which will improve the service mode and increase the availability. This paper based on the characteristics of information visualization technology, The basic theory and realization method of geospatial metadata visualization are studied. The main contents are as follows:. 1) based on the concept of system, this paper analyzes the deficiency of traditional metadata service in mode and efficiency, which lays a necessary foundation for the research of this paper, summarizes the technology and characteristics of information visualization, and combines with the background of metadata retrieval. The visualization methods and applicable conditions of geospatial metadata single element and multi-element are studied. Secondly, according to the components of objects, users and tools in the metadata service model, the realization process of geospatial metadata visualization is designed, and the steps and functions of each stage are summarized, and the logical model of geo-spatial metadata visualization is constructed. (3) the main contents of the visualization design of geospatial metadata are studied. Firstly, a three-factor model of user, task and metadata specification parameters is formed, and the existing research data and the characteristics of the existing service platform are summarized. Secondly, the interaction between user and visual interface and visual view is designed. Finally, the application mode of geospatial metadata visualization is put forward. Compared with the traditional metadata service, the characteristics and advantages of the visualization mode are analyzed. Firstly, the metadata representation, the service model, the preprocessing steps and the storage mode are determined for the purpose of establishing the metadata database, and then the efficient display of the massive data is solved. Filtering data is filtered from three aspects: data hierarchical organization, spatial association attribute acquisition and multiple retrieval methods. The mapping process of visualization is studied, and the mapping relationship between metadata information and visualization factors is established. The qualitative and quantitative representation of the data is realized. Finally, the rendering and interactive algorithms are realized for the three main visualization technologies. Finally, the prototype system of geospatial metadata visualization is implemented, and the contents and indexes of visualization evaluation are proposed and refined, and the quantitative analysis is carried out in the experiment. Compared with the traditional model, the evaluation and test, summarized the shortcomings of the system and the direction of improvement.
【學(xué)位授予單位】：解放軍信息工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：P208;TP391.41

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本文編號：1534639