论文标题
Treelike结构的几何感知平面嵌入
Geometry-Aware Planar Embedding of Treelike Structures
论文作者
论文摘要
3D数据中空间和结构信息的复杂性日益增长,使数据检查和可视化成为一项艰巨的任务。我们描述了一种使用其骨骼表示的3D Treelike结构嵌入平面嵌入的方法。我们的方法将原始的几何形状保持在最大程度上,没有重叠,从而可以在单个视图中探索拓扑。我们提出了一种新颖的相机视图生成方法,该方法最大化可见的几何属性(段形状和段之间的相对位置)。相机视图是针对各个段创建的,用于通过将它们投影到2D来确定每个节点的局部弯曲角度。最终嵌入是通过根据分支长度和2D角度最大程度地减少能量函数(可调节用户的权重)来生成的,同时避免了相交。用户还可以在2D嵌入中进行交互修改细分位置,并且总嵌入将相应地更新。使用为结构内的子树创建的层次摄像头视图提供了全局与局部交互式探索。我们通过定性和定量评估我们的方法,并通过构建线条数据的平面可视化(跟踪神经元)和体积数据(CT血管和支气管数据)来证明我们的结果
The growing complexity of spatial and structural information in 3D data makes data inspection and visualization a challenging task. We describe a method to create a planar embedding of 3D treelike structures using their skeleton representations. Our method maintains the original geometry, without overlaps, to the best extent possible, allowing exploration of the topology within a single view. We present a novel camera view generation method which maximizes the visible geometric attributes (segment shape and relative placement between segments). Camera views are created for individual segments and are used to determine local bending angles at each node by projecting them to 2D. The final embedding is generated by minimizing an energy function (the weights of which are user adjustable) based on branch length and the 2D angles, while avoiding intersections. The user can also interactively modify segment placement within the 2D embedding, and the overall embedding will update accordingly. A global to local interactive exploration is provided using hierarchical camera views that are created for subtrees within the structure. We evaluate our method both qualitatively and quantitatively and demonstrate our results by constructing planar visualizations of line data (traced neurons) and volume data (CT vascular and bronchial data