DIVIDE-AND-TEXTURE: HIERARCHICAL TEXTURE DESCRIPTION

Many textures require complex models to describe their intricate structures, or are even still beyond the reach of current texture synthesis. Their modeling can be simplified if they are considered composites of simpler subtextures. After an initial, unsupervised segmentation of the composite texture into subtextures, it can be described at two levels. One is a label map texture, which captures the layout of the different subtextures. The other consists of the different subtextures. Models can then be built for the "texture" representing the label map and for each of the subtextures separately. Texture synthesis starts by creating a virtual label map, which is subsequently filled out by the corresponding, synthetic subtextures. In order to be effective, this scheme has to be refined to also include mutual influences between textures, mainly found near their boundaries. The proposed composite texture model also includes these. Obviously, one could consider such a strategy with sub-subtextures. Several experiments are shown, for example synthetic textures that represent entire landscapes.