Study of DEM Information Security in Geographic Information Service
Ling Yu Chen, Guo Min Song · Applied Mechanics and Materials · 2015
Geographic Information Service is open service based on the network environment. DEM should be protected because of its significance. This paper gives three methods for DEM information protecting, they are DEM encrypting, DEM information hiding and DEM Information disguising, and researches their theories and techniques. Then, this paper analyses their differences and relation. This paper could provide theory support for DEM information security research in Geographic Information Service.