Shape-driven Oriental Brush Stroke Synthesis

In this paper, we present a smart sketch-based algorithm for simulating Oriental brush strokes on shapes. The user inputs the contours of the shape to paint. The system first estimates automatically the optimal trajectory of the brush, and then renders the shape into Oriental ink painting style by direct brush texture mapping. We formulate the problem of optimal brush trajectory estimation as the minimization of an energy function. This energy function depends on the attributes of motion inertia of a brush, such as the variations in rotation, size, and angular velocity of the brush along a trajectory. Experiments on complex shapes show that our algorithm is able to generate smooth and natural looking oriental brush strokes