Abstract
We present an intuitive, interactive modeling and rendering system for creating non-photorealistic hairstyle images. The main feature of our system lies in its user-friendly sketch interface that allows the user to generate his/her desired hairstyle simply by drawing a few free-form strokes on the 3D model of a scalp. Hairstyles are modeled with a polygon based technique called cluster polygons, and are rendered expressively to obtain non-photorealistic images similar to those found in hand-drawn animations and cartoons.