航放数据与高分一号卫星光学数据融合及应用

Study and Applicaton on the Fusion of Airborne Radiometric Data and GF-1 Optical Data

高分辨率的多光谱遥感影像与低分辨率的航空放射性测量数据的融合有利于提高地质体识别效果,可以为地质填图和找矿提供重要参考。从多光谱遥感影像及航放数据特征出发,建立了基于Curvelet变换的线性融合方法,实现了高分一号多光谱数据与航放数据的多源异构数据融合。对融合结果的地质解译效果评价表明,在融合系数为0.7时,多光谱数据与航放数据的融合图像所反映的地质信息最丰富,表明所提出的基于Curvelet变换的国产卫星影像与航放数据融合方法对实现此类多源异构数据的融合,具有重要参考价值。

The fusion of high resolution multispectral image and low resolution airbone radiometric data is useful to improve the recognition effect of geological bodies,and provides important reference for geological mapping and prospecting.In this paper,based on the characteristics of multispectral images and airborne radiometric data,a linear fusion method based on Curvelet transform is established,which realizes the fusion of multi-source heterogeneous data.The evaluation of the geological interpretation of the fusion results shows that the fusion image reflects the most abundant geological information when the fusion factor is 0.7.The fusion method based on Curvelet transform of domestic satellite images and airbone radiometric data is of great reference value for realizing the fusion of such multi-source heterogeneous data.