Acknowledgements This work was supported in part by the National Natural Science Foundation of China (Grant Nos. 60970093, 60902078, 6117210, and 61072151); by Natural Science Foundation of Beijing (4112061), and by the Scientific Research Foundation for the Returned Overseas Chinese Scholars of State Education Ministry of China.
Creating realistic 3D tree models in a convenient way is a challenge in game design and movie making due to diversification and occlusion of tree structures. Current sketch-based and imagebased approaches for fast tre...