Real-time terrain rendering and visualization based on hierarchical method

Abstract

History of Geographic Information System (GIS) began since early 20th century saw the development of geographical data information visualization. GIS has changed the people workflow from manual system into an automation system that provides more effective and systematic way. GIS is one of the important developments in the field of information technology where it is a set of computer tools for collecting, storing, retrieving at w ill, transforming and displaying spatial data from the real world for a particular set of purposes or application domains. Until recently, GIS contributed for many sector and field, including agriculture, archaeology, environmental monitoring, health, forestry, emergency services, marketing, regional planning, site evaluation, tourism and infrastructure.