激光与光电子学进展, 2019, 56 (10): 101003, 网络出版: 2019-07-04
基于光谱分析和动态分形维数的高光谱遥感图像云检测 下载: 1080次
Hyperspectral Remote Sensing Image Cloud Detection Based on Spectral Analysis and Dynamic Fractal Dimension
图像处理 高光谱 云检测 光谱反射 分形维数 image processing hyperspectral cloud detection spectral reflection fractal dimension
摘要
基于光谱反射特性,研究了多种背景下的快速云检测方法。将光谱反射特性与云的纹理特性相结合,提出了基于动态分形维数和辐射量特性相结合的云检测综合算法。以EO-1卫星Hyperion传感器拍摄的高光谱遥感图像为例,研究了不同下垫面的含云遥感图像,并检测与分析了厚云区和薄云区。对比遥感图像云检测的两种算法,所提算法可以更加精确地识别薄云区,极大地提高了遥感图像云检测精度,同时又可满足星载高光谱图像快速云检测的要求。
Abstract
The rapid cloud detection method in various backgrounds is studied based on the spectral reflection characteristics. The spectral reflection characteristics are combined with the texture features of the clouds, and a comprehensive cloud detection algorithm is proposed based on the combination of dynamic fractal dimension and radiation quantity characteristics. The hyperspectral remote sensing images taken by the Hyperion sensor of the EO-1 satellite are taken as examples to study the cloud-containing remote sensing images of different underlying surfaces, and the thick clouds area and thin clouds area are detected and analyzed. Compared with the two algorithms of remote sensing image cloud detection, the proposed algorithm can identify the thin cloud regions more accurately, which can greatly improve the accuracy of remote sensing image cloud detection and at the same time can meet the requirements of fast cloud detection of satellite-borne hyperspectral images.
徐冬宇, 厉小润, 赵辽英, 舒锐, 唐琪佳. 基于光谱分析和动态分形维数的高光谱遥感图像云检测[J]. 激光与光电子学进展, 2019, 56(10): 101003. Dongyu Xu, Xiaorun Li, Liaoying Zhao, Rui Shu, Qijia Tang. Hyperspectral Remote Sensing Image Cloud Detection Based on Spectral Analysis and Dynamic Fractal Dimension[J]. Laser & Optoelectronics Progress, 2019, 56(10): 101003.