  Many terrain modelling methods have been proposed for the past decades,
providing efficient and often interactive authoring tools. However, they
generally do not include any notion of style, which is a critical aspect for
designers in the entertainment industry. We introduce StyleDEM, a new
generative adversarial network method for terrain synthesis and authoring, with
a versatile toolbox of authoring methods with style. This method starts from an
input sketch or an existing terrain. It outputs a terrain with features that
can be authored using interactive brushes and enhanced with additional tools
such as style manipulation or super-resolution. The strength of our approach
resides in the versatility and interoperability of the toolbox.
