Characteristics Extracted from Sketches and a Drawing Simulation.

Although there are several studies on techniques for producing painting-like images from photographs, almost none of them consider the sketching process. Because we think that the sketching process is rather important, we experimentally observed professional artists sketching. From the results, we extracted relationships between the types of sketches and the features that can they watch. We called these features expressional features. Based of these expressional features, we present an image simulator produce several types of expressions.