基于简单手绘的树木快速建模

Fast Tree Modeling Method Based on Simple Freehand Sketch

针对树木建模过程繁琐、专业知识要求高等问题,提出一种面向非专业用户的树木建模方法,将简单手绘与枝叶库结合,实现让普通用户快速创造树木模型的目的。对用户的手绘草图预处理,消除笔画噪声点和错误点并完成笔画识别,对主干和分支进行三维重建,再依据二维轮廓构建三维子轮廓,以此为约束,从枝叶库中提取合适的枝叶模型插入到分支插入点上,从而完成整个建模过程。实验表明,该方法能让非专业用户在几十秒内建模出完整的树木模型。

Aiming at problems such as complicated process and professional knowledge requirements in tree modeling, a quick tree modeling method for non-experts was proposed, combining branch library with simple sketch to make non-experts create tree model quickly. The method preprocessed the sketch to eliminate noise and error points and identify the strokes, the trunk and branch were reconstructed, child three-dimensional profile was built through the two-dimensional canopy profile, under the constraint of the child profile, suitable branches from library and insert were extracted into the branches, consequently the whole tree model was completed. Experimental results show that this method can make non-expert quickly create a complete tree model.