基于窗口傅立叶变换功率谱分析的盐田地区高分辨率遥感影像分割分类方法探讨

图像分割是面向对象图像分析的基础。目前常规的图像分割算法普遍基于光谱同质性假设,但是这种假设对于提取干旱地区盐田这种具有析出结晶盐与卤水两种高反差地物共存的空间对象而言显得不足为用。针对面向对象图像分析中只采用光谱和形状异质进行图像分割的不足,以吉兰泰盐田及周边地区2008年11月SPOT 5影像为例,首先采用窗口傅立叶变换功率谱方法提取影像纹理特征,然后进行基于纹理、光谱的多尺度分割,进而对分割后图像进行多层次分类来提取盐田信息。实验结果表明,该方法对盐田地区的信息提取有较好的效果。

The Study on Classification of High Resolution Remote Sensing Image in Saline Area based on Window Fourier Transform Power Spectrum Analysis

The image segmentation is the basis of object-based image analysis method,which is usually carried out based on the hypothesis of spectral homogeneity.But this hypothesis is not quite applied to the saline lake in arid region which composed of two surface features with high contrast(crystalline salt and brine) in spectrum.Aiming at the shortcoming of segmentation only based heterogeneity of spectrum and shape in object based image analysis methods,the segmentation algorithms based on texture are proposed.In...