【作者】 尹继豪；

【导师】 宋伟东； 张军；

【作者基本信息】 辽宁工程技术大学 ， 大地测量学与测量工程， 2004， 硕士

【摘要】 遥感作为一种覆盖范围广、速度快、能够提供具有客观事实依据的先进技术手段，在测绘业、GIS、地图制图及国土资源调查等国民经济发展的许多领域中发挥了重要的作用。但遥感图像数据量大，更新速度快，要实现空间数据库中遥感图像的一体化管理，能够高效、时实地调度遥感图像，必须对遥感图像进行合理的压缩存储。本文首先介绍了小波变换的基本理论，分析了图像的小波分解特性和现有小波图像的编码技术，并详细阐述了嵌入式零树小波编码的概念和方法。紧接着把小波变换应用到影像压缩中，提出了EZW编码算法，并作了大量实验验证算法的可行性。因遥感影像每一细节信息的重要性，所以提出了基于小波零树结构的遥感影像保持量测精度的有损压缩方案。本文通过分析空间数据库的特点，提出了遥感影像在空间数据库中的存储结构，最后依照影像存储结构得出空间数据库中遥感影像的空间索引结构。最后提出用“空心金字塔结构”存储和管理影像数据的设想。更多还原

【Abstract】 Remote Sensing(RS) is a kind of developed way which can cover with the most land, and provide fact rapidly. In the many fields, such as surveying and mapping field, GIS(geographic information system) and investigating resource etc, RS play an important role. But image data is very large, and always changes. If we want to manage these image well, and attemper them rapidly and timely, we will compress and manage these image properly.The author illustrates the based theory of wavelet transform firstly, and analyzes the mathematical transformation and encoding technology of wavelet transform. Furthermore, the author use wavelet transform to solve the sensing image compression, propose EZW(Embedded Image Coding Using Zerotrees of Wavelet Coefficient) arithmetic, and validate the encoding feasibility through many tests. The author study the statistical character of every sub-image under the different filter length after wavelet analyzing，and draw some useful conclusions．The author analyzes the character of the geographic database, propose the memory structure of these image. This paper analyzes the spatial reference characteristic of digital ortho-image, and proposes the storage mode and image data management. At last, the author puts forward “the special pyramid structure” which store and manage image data.更多还原