一种评价光学卫星辐射特性及图像质量的噪声分析方法
A Noise Analysis Method to Evaluate Image Quality of Optical Satellites
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摘要: 该文通过分析光学卫星图像的辐射和噪声特性,引进了三维噪声分析方法,将图像噪声按时间、 空间水平和垂直三维空间划分为7个噪声项,并分析了各噪声因子的含义。通过对实际图像加以验证和分析,为评估图像质量和评价图像质量改善方法提供了一种可行的方法。
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关键词:
- 光学卫星图像; 辐射特性; 三维噪声
Abstract: A new 3D noise analysis method is introduced on the basis of analyzing the radiometric performance and noise of optical satellite image. The imaging noise can be divided into seven parts according to temporal and horizontal, vertical dimensions. The paper analyses the content of 3D noise. Several satellite images are used to validate the method. This method provides a feasible way to evaluate the imaging quality and to evaluate the methods of improving image quality. -
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