An evaluation of a sketch-based model-by-example approach for crowd modelling

摘要: An increasing number of computer applications require complex 3D environments. Examples are entertainment (games and movies), advertisement, social media technologies such as "Second Life", education, urban planning, landscape design, search rescue simulations, visual impact studies military simulations. Many virtual environments contain thousands similar objects characters, trees, buildings. Placing these by hand is cumbersome, whereas an automatic placement does not allow sufficient control over the desired distribution characteristics. In previous work we presented a prototype for sketch-based model-by-example approach to generate large distributions from sketched example distributions. this paper present improved algorithm perform formal user study demonstrating that indeed intuitive, effective, it works regular, irregular clustered patterns. Remaining limitations related Gestalt semantic concepts illustrated discussed.