Bruckner Stefan, Gröiller M Eduard
Institute of Computer Graphics and Algorithms, Vienna University of Technology.
IEEE Trans Vis Comput Graph. 2006 Sep-Oct;12(5):1077-84. doi: 10.1109/TVCG.2006.140.
Exploded views are an illustration technique where an object is partitioned into several segments. These segments are displaced to reveal otherwise hidden detail. In this paper we apply the concept of exploded views to volumetric data in order to solve the general problem of occlusion. In many cases an object of interest is occluded by other structures. While transparency or cutaways can be used to reveal a focus object, these techniques remove parts of the context information. Exploded views, on the other hand, do not suffer from this drawback. Our approach employs a force-based model: the volume is divided into a part configuration controlled by a number of forces and constraints. The focus object exerts an explosion force causing the parts to arrange according to the given constraints. We show that this novel and flexible approach allows for a wide variety of explosion-based visualizations including view-dependent explosions. Furthermore, we present a high-quality GPU-based volume ray casting algorithm for exploded views which allows rendering and interaction at several frames per second.
分解视图是一种将物体分割成多个部分的图示技术。这些部分被移开以揭示原本隐藏的细节。在本文中，我们将分解视图的概念应用于体数据，以解决遮挡这一普遍问题。在许多情况下，感兴趣的物体被其他结构遮挡。虽然透明度或剖视图可用于揭示焦点物体，但这些技术会去除部分上下文信息。另一方面，分解视图不存在这个缺点。我们的方法采用基于力的模型：将体数据划分为由多个力和约束控制的部分配置。焦点物体施加一个爆炸力，使各部分根据给定的约束进行排列。我们表明，这种新颖且灵活的方法允许进行各种基于爆炸的可视化，包括与视图相关的爆炸。此外，我们提出了一种用于分解视图的基于高质量GPU的体光线投射算法，该算法允许每秒渲染和交互多个帧。
