Images fusing in remote sensing mapping

Remote sensing image fusion is a method which integrates multiform image data sets into a new data set by geometry matching, color transformation and other ways. During mapping the LiJiang county in YunNan province with high-resolution remote sensing imagery, we found that it is a good way to utilize the technique of image fusion, which includes image matching, image interpolation, edge enhancement, and imagery updating, to improve the mapping quality. After iterative experiments, we explored a new way to update and fuse based on TM images, SPOT panchromatic images and air photographs. In the fused image, various RS image information can supplement each other, so the fused image not only has abundant spectrum information, but also reserves high spatial resolution. It proves that image fusion is an important way to improve representation ability of mapping imagery