Beyond Morphogenesis Enhancing synthetic trees through death, decay and the Weasel Test

Artificial Life and Computer Graphics merge prominently in the production of virtual trees. This paper highlights several issues seldom raised by procedurally generated, synthetic landscape imagery that result in a perceived lack of authenticity or drama. Some of the concerns discussed include a need for models of decay and an understanding of the tree’s role in the environment and within human culture. These issues fall beyond current simulations, yet it is suggested that simple ad hoc techniques might be employed to overcome such gaps in current research. The intention here is to suggest ways to enhance the realism and drama of procedural landscapes. The paper also offers the subjective Weasel Test as a means to gauge the success of our models of natural phenomena. 1.0 Introduction and motivation