Opacity Volume based Halo Generation for Enhancing Depth Perception
Halos are usually used to enhance depth perception and display spatial relationships in illustrative visualization. In this paper, we present a simple and effective method to create a volumetric halo illustration. In the pre-processing stage, we generate a view-independent halo intensity volume, which contains all potential halos around the boundaries of features, based on the opacity volume on graphic hardware. During halo rendering, the halo intensity volume is used to extract halos only around the contours of structures for the current viewpoint. The performance of our approach is significantly faster than previous halo illustration methods, which perform both halo generation and rendering during volume rendering. We further propose depth-dependent halo effects, such as depth color fading and depth width fading, to provide more perceptual cues for depth interpretation. Ex- perimental results demonstrate the efficiency of our proposed approach and the effectiveness of depth-dependent halos.
国际会议
2011国际计算机辅助设计与图形学学术会议(CAD/Graphics 2011)
济南
英文
1-7
2011-09-15（万方平台首次上网日期，不代表论文的发表时间）