基于随机森林的三维人造模型前朝向识别算法

发布时间：2018-01-28 09:38

本文关键词： 前朝向三维人造模型室内场景合成形体分析随机森林　出处：《计算机辅助设计与图形学学报》2017年07期 　论文类型：期刊论文

【摘要】：三维模型前朝向的识别是场景合成与重建的基础.针对现有三维模型前朝向识别算法依赖于模型在场景中上下文关系、计算过程复杂等问题,提出一种基于随机森林的三维人造模型前朝向识别算法.首先通过模型简化和计算模型方向包围盒得到候选面;然后基于物体功能设计和心理学等对模型进行形状分析,为候选面提取一组与之相关联的特征;最后利用随机森林理论训练前朝向判别分类器,实现对模型的前朝向识别.实验结果表明,该算法对模型前朝向识别正确率达到80%,能够很好地处理室内场景绝大种类模型,包括目前方法计算错误的模型.
[Abstract]:The recognition of forward orientation of 3D model is the basis of scene synthesis and reconstruction. In view of the existing 3D model forward orientation recognition algorithm depends on the context of the model in the scene the computation process is complex and so on. A forward orientation recognition algorithm for 3D artificial model based on random forest is proposed. First, candidate surfaces are obtained by model simplification and calculation of model direction bounding box. Then the shape of the model is analyzed based on object function design and psychology, and a set of associated features are extracted for the candidate surface. Finally, the forward orientation recognition of the model is realized by using the random forest theory to train the former orientation classifier. The experimental results show that the accuracy of the algorithm for the model orientation recognition is up to 80%. It can deal with the most kinds of indoor scene models, including the model that the current method is wrong.
【作者单位】：清华大学软件学院;
【基金】：基金项目:结合三维零部件检索的智能装配建模技术研究(61373071)
【分类号】：TP391.41
【正文快照】： 在三维场景的重建与合成领域,合理地将三维模型摆放到场景中与模型本身和场景美学息息相关,三维模型在场景中的摆放信息与模型的摆放位置和模型的朝向密切相关,三维模型朝向的获取是场景合成中重要的一环.从此实际应用出发,本文提出这么一个问题:能否从三维模型的几何形状特征

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