DMC遥感小卫星数据预处理方法分析

DMC遥感小卫星1G级数据产品虽然经过了波段配准、辐射校正和系统几何校正处理,但尚不能作为海啸灾害解译和评估的基础图像。为了满足图像解译和目标几何量测的要求,研究DMC小卫星数据产品中噪声、拼接缝以及色调不均匀去除的方法,以提高DMC小卫星图像质量。通过对其形成原因和特性进行分析,提出了消除噪声、拼接缝和几何精校正,以及制作色调一致的真彩色三维影像图的技术方法,并给出了具体示例。

Analysis on DMC Remotely Sensed Mini-Satellite Data Pre-processing Method

Level 1G data product of DMC remote sensing mini-satellite has been processed by band registering, radiometric correction and systematically geometric correction. To meet the need of image interpretation and object geometric measuring, this paper discusses the methods to remove the noise, mosaic line and different color in DMC mini-satellite product, which will improve DMC mini\|satellite image quality. This paper analyzes their reasons and characteristics and, discusses the methods to get rid of noises and mosaic line and make the true color image map with uniform saturation. The specific illustrations is provided.