Organic Textures with Controlled Anisotropy and Directionality

This paper presents a computational method of generating
organic textures. The method first tessellates a region into a set of
pseudo Voronoi polygons using a particle model and then
generates detailed geometry of each of the polygons using Loop's
subdivision surface with fractal noises. Unlike previous particle
models, which are designed for creating hexagonal cell
arrangement, our particle model can also create rectangular cell
arrangement, which is often observed in organic textures. In
either cell arrangement the method allows a user to control
anisotropy of cell geometry and the directionality of the cell
arrangement. Detailed three-dimensional cell geometry is then
created by adjusting a set of parameters that controls the cells'
height and degree of skewing and tapering. A user can create
various types of realistic looking organic textures with ease by
simply choosing a cell arrangement type, anisotropy, and
directionality, along with the geometry control parameters.