Edge-based procedural textures

We introduce an edge-based procedural texture (EBPT), a procedural model for semi-stochastic texture generation. EBPT quickly generates large textures from a small input image. EBPT focuses on edges as the visually salient features extracted from the input image and organizes into groups with clearly established spatial properties. EBPT allows the users to interactively or automatically design new textures by utilizing the edge groups. The output texture can be significantly larger than the input, and EBPT does not need multiple textures to mimic the input. EBPT-based texture synthesis consists of two major steps, input analysis and texture synthesis. The input analysis stage extracts edges, builds the edge groups, and stores procedural properties. The texture synthesis stage distributes edge groups with affine transformation. This step can be done interactively or automatically using the procedural model. Then, it generates the output using edge group-based seamless image cloning. We demonstrate our method on various semi-stochastic inputs. With just a few input parameters defining the final structure, our method can analyze the input size of 512 x 512 in 0.7 s and synthesize the output texture of 2048 x 2048 pixels in 0.5 s.