Literature Review

This review examines methods of terrain representation, creation and realism described in literature. In particular a combination of terrain synthesis using Fractional Brownian Motion, and erosion procedures is examined, as well as the procedural formation of rivers. Other techniques as examined, such as Triangulated Irregular Networks and ridges generation and discarded in terms of this project for reasons detailed. In conclusion it is decided that a combination of Fractional Brownian Motion, procedural formation of rivers via squig curves and a physically based model of river formation will be used as initial terrain, and then eroded to achieve the goals of this project.