Application of P5 and SPOT5 images in national land investigation

This paper utilized two images with different sensor and temporal but with the same resolution to interpret characteristics of surface features. At first, P5 image should be done orthorectification and accurate alignment with SPOT5 image. Interpretation symbols could be built according to objects appearing different characteristics on different images. Precision of outside investingation results was compared with pecision of investingation results by only using SPOT5 and by using SPOT5 and P5 together. It was shown that using corrected P5 images and SPOT5 image to interpret road, arable land, industrial and mining land and added features would be better, while other objects such as woodland, shrubbery land, lawn should be interpreted by SPOT5 with plentiful spectrum information.