中文摘要：

针对模型降维的需要，提出一种实体模型的多分辨率中轴生成方法．首先根据模型的层次寻找模型中需要细化的部分，并据此对边界进行体素化；其次使用距离蔓延的方法计算多分辨率体素的距离；最后根据体素的距离计算出多分辨率的中轴体素．实验结果表明，该方法可以以低时间空间代价生成高质量的多分辨率中轴．

英文摘要：

According to the requirement of the dimensionality reduction of solid models, a multi-resolution medial axis generation method is proposed for solid models. According to different model levels, the parts of the model that need to be refined are found out first. Then, the boundary is voxelized with the help of the results. After that, the distances of the multi-resolution voxels are computed by distance dilation method. Finally, the multi-resolution medial axis voxels are computed according to the distances of voxels. Several groups of experiments are given to demonstrate that the multi-resolution medial axis of high quality can be generated with low time and space cost using the proposed method.