Modeling Virtual Chinese Brush Using Camshaft Curve and Stochastic Process

This paper presents a new model for simulating a virtual Chinese hair brush using Camshaft Curve, a novel analytic curve proposed in the paper to define the shape of brush stroke. Camshaft Curve is delicately designed to be user friendly and can easily capture the shape of real brush stroke thanks to the flexible and feasible coefficients arrangement. The process of pigment transfer, which is always simply simulated by other brush model, are also modeled using discrete stochastic process. A software based on the brush model has been developed and tested, which could be used for creating Chinese calligraphic artwork. Several samples created by the software were obtained and the differences between the imitation and real artwork are perceptually invisible.