【作者】 车国泉；

【导师】 秦军；

【作者基本信息】 西南交通大学 ， 大地测量学与测量工程， 2007， 硕士

【摘要】 水系类型是地球应力作用的结果，水系类型表达了地质、地理的某些特性。通过水系类型信息研究可反映出一定的地质构造和地壳运动性质。根据水系平面形态的不同，我们可以将水系分为树枝状水系、辫状水系、平行状水系、放射状水系、扇状水系、环状水系、格子状水系等。对各种遥感影象的水系加以识别和分类，为决策者提供必要的信息和数据，具有重要的现实意义。首先，本文结合图象的相关理论，即颜色模型和象素间的联系，实现了对遥感图象从彩色到灰度的转换和对数字图象的二值化处理。在进行二值化处理时，可根据不同的要求选取不同的域值，得到相应的二值图象。其次，本文根据数学形态学的知识，利用击中击不中变换原理，采用八方向结构对实现了对数字图象的细化处理。再次，水系网是一个非常复杂的图形，水系网的特征提取主要是依靠人工目视。在对自然界中一部分辫状水系进行分析后，本文提出了以重复结点作为辫状水系识别的主要特征量。最后，本文结合句法模式识别中句法分析的方法与自动机识别技术对辫状水系进行了识别。并编制了相应的程序实现了辫状水系的自动识别，取得了较好的结果。更多还原

【Abstract】 The drainage pattern is formed by the ground stress, and it expresses some characters of geology and geography. It can reflect the characters of geological structure and crustal movement by investigating the information of drainage pattern. We can recognize the drainage system from its difference of pan as dendritic drainage, braided drainage, parallel drainage, radiate drainage, fanlike drainage, annular drainage, cancellated drainage and so on. It has an important practical significance in offering essential information and data for the decision-maker with recognition and classification the drainage system from the image of remote sensing.Firstly, with the theory of image—color model and pixels’ connection, itcompletes the conversion from color to grey and the binaryzation operation for digital image. When do the binary image processing, we can chose different range with different requirement and obtain the right binary image.Secondly, on the basis of morphological, with the principle of transformation between hit and miss, the digital image with thinned is carried out in eight direction frame.Thirdly, drainage system is a very complex image graphics. The extract of drainage system characteristics usually depends on manual visualization. With the analysis of braided drainage in the nature, this thesis put forward that repeated crunodes are the main characteristics of braided drainage recognition.Finally, with the technique of parsing and the automaton pattern recognition in the syntactic pattern recognition, the classification of braided drainage is carried out. A program is programmed for the braided drainage automatic recognition and obtains a good result.更多还原