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基于蓝噪声理论的遥感图像森林植被纹理测量

DOI: 10.6046/gtzyyg.2015.02.10, PP. 63-68

Keywords: 遥感图像,纹理分割,蓝噪声,森林植被

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Abstract:

遥感图像分割中森林植被是重要的一类目标,有效确定森林植被的纹理尺度是纹理分割的重要问题。提出一种用蓝噪声理论描述遥感图像森林植被纹理特征的方法,是一种新的植被纹理刻画和纹理尺度计算方法。研究尺度与植被纹理形态的对应关系,对于选定的探测区域,迭代寻找蓝噪声特征。迭代过程包含通过几何变换缩小区域的尺寸,用快速傅里叶变换获取区域的频谱响应,从频谱响应中提取蓝噪声特征。对于具有蓝噪声特征的区域,计算森林植被纹理的灰度分布,根据当前区域尺寸计算纹理的尺寸。实验表明,森林植被纹理单元的尺度和灰度分布测量结果准确,为进一步纹理分割提供了可靠的基础。

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