遥感图像中薄云的存在为遥感图像的判读带来了极大的影响,本文针对遥感图像中的薄云雾提出了一种基于高维空间几何信息学(High-Dimensional Space Geometrical Informatics)(HDSGI)的去云的新算法.基于HDSGI理论,将一副带有薄云的遥感...遥感图像中薄云的存在为遥感图像的判读带来了极大的影响,本文针对遥感图像中的薄云雾提出了一种基于高维空间几何信息学(High-Dimensional Space Geometrical Informatics)(HDSGI)的去云的新算法.基于HDSGI理论,将一副带有薄云的遥感图像作为高维空间中的一点,通过各向同性滤波器将该高维空间点几何分解到不同尺度的两个子空间,对各个子空间的分解分量分别进行抑制、增益变换,将经过变换后的子空间分量合成得到最终所需的去云后遥感图像.采用实际卫星影像和航空影像对该算法进行实验验证,用同态滤波和小波分解算法进行同类算法比较,并采用若干客观图像评价参数评价分析处理后图像.实验结果表明,本文算法不仅能有效降低薄云覆盖及相关的噪音干扰,而且可以增强原始遥感图像边缘信息,达到去除薄云的目的.展开更多
In this paper, we have considered a class curves with some geometric properties in a higher dimensional space and obtained the differential equation of such a class curves, which are called the hyperbolas. We have con...In this paper, we have considered a class curves with some geometric properties in a higher dimensional space and obtained the differential equation of such a class curves, which are called the hyperbolas. We have considered also hyperbola-preserving conformal transformation and the relevant physical sense. And therefore obtained other invariant properties under the illustrious concircular transformation.展开更多
文摘遥感图像中薄云的存在为遥感图像的判读带来了极大的影响,本文针对遥感图像中的薄云雾提出了一种基于高维空间几何信息学(High-Dimensional Space Geometrical Informatics)(HDSGI)的去云的新算法.基于HDSGI理论,将一副带有薄云的遥感图像作为高维空间中的一点,通过各向同性滤波器将该高维空间点几何分解到不同尺度的两个子空间,对各个子空间的分解分量分别进行抑制、增益变换,将经过变换后的子空间分量合成得到最终所需的去云后遥感图像.采用实际卫星影像和航空影像对该算法进行实验验证,用同态滤波和小波分解算法进行同类算法比较,并采用若干客观图像评价参数评价分析处理后图像.实验结果表明,本文算法不仅能有效降低薄云覆盖及相关的噪音干扰,而且可以增强原始遥感图像边缘信息,达到去除薄云的目的.
基金Foundation item: Supported by the Natural Science foundation of Henan Education Committee (20021100002)
文摘In this paper, we have considered a class curves with some geometric properties in a higher dimensional space and obtained the differential equation of such a class curves, which are called the hyperbolas. We have considered also hyperbola-preserving conformal transformation and the relevant physical sense. And therefore obtained other invariant properties under the illustrious concircular transformation.
