negative images
4.It is the studies which use the method of combining digital elevation model (DEM) with the remotely sensed TM data, and through a combination of quantitative analysis with statistic regressive analysis. The major purpose of the study is to realize the recovering processing of the original TM data, i.e. eliminating the negative impacts of ground topography to spectral radiometer features on the images.
5.Through different calculating about the MSS tape of land satellite, the results show that the images are made by negative change of ratio—ratio increased—colouring of the colour level have a good effect to study on the Dari seismotectionic (Ms=7 3/4), Qinghai Province in 1947. The leading factor of the NWW direction of linear structure in this area is defined by different timephase;
