SPOT多光谱影像与全色影像融合研究

Research on the SPOT multi-spectral image and panchromatic image fusion

图像融合是解决多源遥感图像综合的有效技术手段,针对不同数据源选择最佳的融合方法是提高图像融合质量的关键.分析Gram_Schmidt融合算法的理论、算法和融合步骤的基础上,对SPOT的多光谱波段影像和全色波段影像进行融合,目视效果从色调、纹理和清晰度等方面进行定性分析,定量分析是根据均值、标准方差、扭曲程度指标进行分析,对融合后影像质量做出了评价.研究结果表明:SPOT影像采用Gram_Schmidt变换融合效果保持了较高的空间分辨率同时光谱保持较好,Gram_Schmidt融合算法适合高分辨遥感影像融合.

Image fusion was an effective technology to solve the multi-source remote sensing image synthesis method,in view of the different data sources to choose the best fusion method was the key to improve the quality of image fusion. Analysis theory and algorithms of Gram_Schmidt fusion algorithm and fusion steps,on the basis of on the SPOT of the multispectral band image and panchromatic band image fusion,the visual effect from the aspects such as color,texture and clarity to the qualitative analysis,quantitative analysis was based on the mean value,standard variance,the distortion degree index were analyzed,and made evaluation of fused image quality. The results showed that SPOT image fusion algorithm using Gram_Schmidt fusion images was kept high spatial resolution,but also had better spectral characteristics,Gram_Schmidt fusion algorithm was suitable for high resolution remote sensing image fusion.