中图分类号:P208; TP79 文献标志码:A
Fusion method of remotely sensed image for retaining color
(3S Centre, East China Technical University, Fuzhou Jiangxi 344000, China)
Abstract:This paper analyzed the Brovey transform, and then proposed an improved method called panchromatic image low-pass filter based ratio fusion (Low-pass RF), that production’s color was accordant with that of the multi-spectral image. This paper discussed its theory mechanism at terms of radiancy. Also, the results of visual interpretation and quantitative analysis to gray variance index show that the Low-pass RF transform have a capability of retaining color from multi-spectral image. Classification accuracy of the fused image by Low-pass RF transform is higher than the Brovey image. Therefore, Low-pass RF transform is more excellent than Brovey transform. ......