【摘要】：遙感技術(shù)不斷的發(fā)展，影像獲取的能力強(qiáng)大，從而積累的影像數(shù)據(jù)量越來越大，這就要求我們更加有效的存儲管理大量影像數(shù)據(jù)。影像數(shù)據(jù)資料的應(yīng)用越來越廣泛，為應(yīng)急救災(zāi)、國情監(jiān)測、城市建設(shè)規(guī)劃、交通等領(lǐng)域提供了重要的數(shù)據(jù)，發(fā)揮著重要的作用，這使得加強(qiáng)數(shù)據(jù)的維護(hù)管理顯得尤為必要。 本文從數(shù)據(jù)庫的角度出發(fā)設(shè)計研究能夠?qū)崿F(xiàn)遙感影像數(shù)據(jù)的有效存儲與管理的技術(shù)，確定了以面向?qū)ο?關(guān)系的Oracle數(shù)據(jù)庫為平臺，分析影像庫構(gòu)建的主要技術(shù)，并付諸于實踐進(jìn)行開發(fā)的技術(shù)驗證。主要內(nèi)容有： 首先結(jié)合遙感影像數(shù)據(jù)的組織管理模式，對國內(nèi)外影像數(shù)據(jù)庫的研究現(xiàn)狀與特點進(jìn)行了闡述與分析。 闡述分析了Oracle數(shù)據(jù)庫的開發(fā)平臺內(nèi)部數(shù)據(jù)組織結(jié)構(gòu)，以及技術(shù)優(yōu)勢。對于遙感影像數(shù)據(jù)的開發(fā)，Oracle有著獨特的內(nèi)部組件：用于空間數(shù)據(jù)組織管理的Spatial，以及存儲影像像素數(shù)據(jù)與屬性元數(shù)據(jù)的GeoRaster對象類型。 可以進(jìn)行數(shù)據(jù)庫開發(fā)的接口有很多種，選擇合適的接口對于提高數(shù)據(jù)庫系統(tǒng)的效率很重要。因此，文章對主要的接口進(jìn)行了闡述與對比分析，并且提出利用OCI接口完成與Oracle影像庫的數(shù)據(jù)交互工作。 對考慮影像數(shù)據(jù)量不斷增多的情況，對構(gòu)建金字塔的影像組織技術(shù)進(jìn)行了深入的分析，對于影像數(shù)據(jù)的在應(yīng)用層面的調(diào)度顯示技術(shù)地實現(xiàn)進(jìn)行了設(shè)計，影像數(shù)據(jù)以大小統(tǒng)一的規(guī)格進(jìn)行不同分辨率的存儲，物理空間存量增大，實現(xiàn)影像數(shù)據(jù)的高效調(diào)度顯示。而且數(shù)據(jù)庫具有很好的擴(kuò)展性。同時提出了在調(diào)度的過程中的首先的工作是影像數(shù)據(jù)塊的快速定位與計算，，借助Oracle內(nèi)部成熟的索引機(jī)制，在影像塊表上建立索引，提高檢索效率的方法。 最后，在上述研究的基礎(chǔ)上，對遙感影像數(shù)據(jù)進(jìn)行入庫、構(gòu)建金字塔、瀏覽顯示等功能，對本文的設(shè)計的方案可行性進(jìn)行了實踐驗證，基本實現(xiàn)了數(shù)據(jù)的有效操作與管理。對遙感影像數(shù)據(jù)建庫管理提高了性能與數(shù)據(jù)安全。
[Abstract]:With the continuous development of remote sensing technology, the ability of image acquisition is strong, so the amount of image data accumulated is more and more large, which requires us to more effectively store and manage a large number of image data. The application of image data is more and more extensive, which provides important data and plays an important role in the fields of emergency relief, national situation monitoring, urban construction planning, transportation and so on, which makes it particularly necessary to strengthen the maintenance and management of data. From the point of view of database, this paper designs and researches the technology that can realize the effective storage and management of remote sensing image data, and determines the main technology of image database construction based on Object-Oriented Oracle database. And put into practice to develop the technical verification. The main contents are as follows: firstly, combined with the organization and management mode of remote sensing image data, the research status and characteristics of image database at home and abroad are expounded and analyzed. This paper analyzes the data organization structure and technical advantages of Oracle database development platform. Oracle has a unique internal component for the development of remote sensing image data: spatial data organization and management, and GeoRaster object types that store image pixel data and attribute metadata. There are many kinds of interfaces that can be used for database development. It is very important to select suitable interfaces to improve the efficiency of database system. Therefore, this paper describes and compares the main interfaces, and proposes to use the OCI interface to complete the data interaction with the Oracle image library. Considering the increasing amount of image data, the image organization technology of building pyramid is deeply analyzed, and the scheduling and displaying technology of image data at application level is designed. The storage of image data at different resolution with uniform size can increase the amount of physical space and realize the efficient scheduling and display of image data. And the database has very good extensibility. At the same time, it is proposed that the first task in the process of scheduling is to locate and calculate the image data block quickly. With the help of the mature index mechanism of Oracle, the method of building index on the image block table is proposed to improve the retrieval efficiency. Finally, on the basis of the above research, we put the remote sensing image data into the database, construct the pyramid, browse the display and other functions, and verify the feasibility of the design scheme of this paper, and basically realize the effective operation and management of the data. The management of remote sensing image data base has improved the performance and data security.
【學(xué)位授予單位】：北京建筑大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：P208

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本文編號：2188003