Context preserving maps of tubular structures.
Context preserving maps of tubular structures.
复制标题
管状结构的上下文保留图。
DOI：
10.1109/tvcg.2011.182
复制
发表时间：
2011
影响因子：
5.2
通讯作者：
Kaufman,Arie
中科院分区：
文献类型：
--
作者：
Marino,Joseph;Zeng,Wei;Gu,Xianfeng;Kaufman,Arie
当可视化管状3D结构时，外部表示通常用于引导和显示，并且这种2D视图通常可能包含遮挡。已经提出了虚拟解剖方法，其中整个3D结构可以映射到2D平面，尽管这些方法会因拉直弯曲部分而失去上下文。我们提出了一种新的方法来创建地图的三维管状结构，产生一个简洁的视图，同时保持整体的几何结构。给定结构的主要视图平面，其曲线骨架首先投影到2D骨架。此2D骨架经过调整以考虑长度的扭曲，经过修改以删除交叉点，并经过优化以保留原始3D骨架的形状。基于该成形的2D骨架，基于通过结构的切片路径和骨架周围的半径来获得对象的地图的边界。切片的结构被共形映射到一个矩形，然后通过谐波映射变形，以匹配边界的位置。该展平的图在2D显示中保留3D对象的一般几何上下文，并且可以使用体积光线投射来完成该展平的图的渲染。我们已经评估了我们的方法对人类结肠模型的真实的数据集。
When visualizing tubular 3D structures, external representations are often used for guidance and display, and such views in 2D can often contain occlusions. Virtual dissection methods have been proposed where the entire 3D structure can be mapped to the 2D plane, though these will lose context by straightening curved sections. We present a new method of creating maps of 3D tubular structures that yield a succinct view while preserving the overall geometric structure. Given a dominant view plane for the structure, its curve skeleton is first projected to a 2D skeleton. This 2D skeleton is adjusted to account for distortions in length, modified to remove intersections, and optimized to preserve the shape of the original 3D skeleton. Based on this shaped 2D skeleton, a boundary for the map of the object is obtained based on a slicing path through the structure and the radius around the skeleton. The sliced structure is conformally mapped to a rectangle and then deformed via harmonic mapping to match the boundary placement. This flattened map preserves the general geometric context of a 3D object in a 2D display, and rendering of this flattened map can be accomplished using volumetric ray casting. We have evaluated our method on real datasets of human colon models.