山地地区高分卫星影像正射纠正

Research on ortho rectification of high resolution satellite image in mountainous regions

随着国内外对地观测卫星技术的不断进步,山地地区高分卫星影像获取能力大幅提升。针对山地区域高分卫星影像云雾多、成像阴影多、纠正位置精度控制难等问题,该文提出山地区域高分卫星正射纠正生产方案。试验证明,经过大气校正、可视化的地形修复等处理后可解决薄雾去除和影像扭曲变形等问题;同时,GPU并行计算可实现影像快速融合、控制点自动选择等操作,提高生产效率,可为山地区域高分卫星影像快速处理提供参照。

With the development of the earth observation satellite technology at home and abroad, the ability of obtaining high resolution satellite images has advanced in mountainous regions. In the light of the problem such as cloudy weather, more imaging shadow, difficult to control the position precision of rectification, this paper proposed an effective ortho rectification strategy for high resolution satellite images in mountainous regions. Tests showed that the operation of fast image fusion and automatic selection of control point the operation could be achieved by GPU parallel computing cluster, which could greatly improve the production efficiency. Simultaneously, after processing of atmospheric correction and visualization of DEM repairing, it resolved the problem of image distortion, haze removal and other issues, provided references for the fast processing of satellite images in mountainous regions.