In this paper a paradigm of human head aesthetic design based on hybrid genetic algorithm is proposed. Hybrid means the integration of interactive and natural selection of the population in genetic algorithm during the evolution process. Firstly, a sketching paradigm is proposed to sketch the head profile by mouse input, the profile is then parameterized and modified; quantities of more profiles are generated based on GA optimizer, where the user can select the best one. After 2D profile design, a 3D reconstitution algorithm is developed to construct the 3D head in NURBS model by analyzing four input sketching curves, i.e. one longitudinal curve, three side profile curves. The 3D head mesh model is capable of modification and easy to be manipulated. The prototype CAD system is developed based on ACIS 3D modeling kernel, and the design result is illustrated to show the effectiveness of this paradigm.
