不同高分辨率遥感图像融合技术特征比较

简要回顾了图像融合技术的起源和发展情况。对图像融合的概念与基础理论作了阐述,剖析了其优缺点和使用领域。通过6种融合方法对杭州市滨江区QuickBird正射影像及数字化地形图进行了融合,并对融合图像进行了效果评价,结果表明,所有融合图像的方差和熵都大于配准后的图像,融合后图像的信息量大为增加。

On features of fusion technique of RS images with different high resolutions

The comprehensive and efficient utility of RS images different in space resolution, geometry resolution and spectroscopy resolution is one of the hot topics in the academic field. In this paper, we reviewed the origin and development of the image fusion, definition,expatiated on the conception and basic theory of fusion, and analyzed its advantages, disadvantages and usage field. The paper focused on the fusion of QuickBird orthographic images and digital map of Bingjiang District of Hangzhou city,evaluating the fused results. The results showed that all the variance and entropy of fused images are larger than those of matched ones,which increases the amount of information.