SPOT5超模式数据处理技术研究

超模式技术是为提高法国SPOT5卫星影像分辨率而采用的一项创新性技术,尽管已经有相关的文献对其进行了介绍,但在SPOT5超模式影像数据处理方面的研究却很少报道。主要对SPOT5超模式影像数据的处理方法进行了研究,在简要介绍SPOT5超模式技术的基础上,根据超模式影像数据交错采样的特点进行了基于梅花采样的影像内插,并对内插影像的去噪与解卷积过程进行了大量的研究,分析了影响SPOT5成像系统点扩散函数的主要因素。最后用SPOT5超模式影像数据进行了试验,取得了比较理想的效果。

A Research on SPOT5 Supermode Image Processing

Supermode is a completely original technique to improve the resolution of panchromatic images, there are some paper about this technique, but few regards the issue of Supermode image processing. we will focus on this issue in this paper. Based on a brief introduction about the supermode adopted in SPOT5 satellite, the sophisticated quincunx interpolation processing is considered, which can takes advantage of the regularity and structure inherent in interlaced data. Further more, some researches on denoising and deconvolution have been proposed and the main factors affect the PSF of SPOT5 imaging system are analyzed. Finally, we take some experiments on the SPOT5 supermode images processing and some satisfactory results are achieved.