摘要
通过分析比较HIS变换、Brovey变换、SFIM变换、加权融合四种常用融合方法的原理及其优缺点,提出了使融合后图像光谱扭曲和失真较小,同时保持高分辨率图像的空间纹理细节信息的融合方法应满足的三条规则。并依据此规则,提出了一种基于高通滤波算子的边缘增强型的融合算法,实验结果表明此算法具有很好的空间分辨率,同时又能较好地保持原有多光谱图像的光谱特性,验证了规则的合理性。
HIS transformation. Brovery transform. SFIM transform and weighted fusion are four methods commonly used in fusing high resolution image and muhi-speetral image. Based on the analysis of the principle, advantages and disadvantages of the four methods, this paper proposes three fusion rules to avoid color distortion, and proposes a new fusion method based on edge enhancement through high-pass filtering algorithm according to the rules. Experiment shows that this algorithm presents almost the same color as the original multi-spectral image and enhances the space detail, what validated that the three rules are reasonable.
出处
《遥感信息》
CSCD
2007年第5期56-60,共5页
Remote Sensing Information
关键词
图像融合
融合规则
光谱保持
边缘增强
image fusion
fusion rule
spectral preservation
edge enhancement
