【摘要】 给出了一种基于递进网格的交互式模型编辑新方法 .该方法中把模型看成由若干个不同的细节层次来表示 ,对每一个层次均可进行单独编辑 .在活动层次中实现编辑操作的方法是将编辑区映射到二维空间上 ,并在其上对施加在原模型上的离散编辑信息进行插值 ,再逆映射到原三维模型 ,从而实现模型形状的修改 .映射和插值算法的高效是该算法可用于实时交互的关键 .另外 ,由于我们可以将编辑信息在不同层次间进行传播 ,因此该方法可以实现层次式模型编辑更多还原

【Abstract】 This paper proposes a novel approach for interactively editing a triangular mesh based on level of detail. By the approach, multiple levels of detail are generated first by using a method of improved progressive mesh to represent the original mesh. Designer then selects a level as an active level and a closed region from this level as an editing area. The idea of this approach in performing an editing operation is to embed the editing area of the active level onto a 2D rectangle and interpolate each component of the editing information in the rectangle that is then mapped back to the editing area. The editing information at the active level could be automatically propagated onto all the coarser and finer levels. The interactivity of the processes described above substantially increases intuitivity in the editing operation. As a matter of fact, a hierarchical modeling approach is proposed in the paper for the design and implementation of mesh editing systems.更多还原