论文标题
3D风景中透明覆盖的不透明度范围的研究
A Study of Opacity Ranges for Transparent Overlays in 3D Landscapes
论文作者
论文摘要
{在现实渲染的3D虚拟环境中可视化数据时，不仅表示3D场景，而且还要覆盖有关其他抽象数据的信息通常很重要。这些叠加层必须有可能可见，即足够可读以传达它们所代表的信息，但仍然没有引人注目，以免弄乱观点。我们通过研究三种不同模式（填充，条纹和虚线模式）之间的关系，两种模式密度，存在是否存在牢固的轮廓，两种类型的背景（空白和树木）以及覆盖层的不透明性来建立设计覆盖的准则。对于各种因素组合，参与者设定了最微弱和最强的可接受的不透明度值。这项第一项研究的结果表明，i）可接受的不相处范围约为20-70％，ii）ii）范围可以通过使用轮廓将范围扩大5％，而III）范围基于模式和密度等特征。
{When visualizing data in a realistically rendered 3D virtual environment, it is often important to represent not only the 3D scene but also overlaid information about additional, abstract data. These overlays must be usefully visible, i.e. be readable enough to convey the information they represent, but remain unobtrusive to avoid cluttering the view. We take a step toward establishing guidelines for designing such overlays by studying the relationship between three different patterns (filled, striped and dotted patterns), two pattern densities, the presence or not of a solid outline, two types of background (blank and with trees), and the opacity of the overlay. For each combination of factors, participants set the faintest and the strongest acceptable opacity values. Results from this first study suggest that i) ranges of acceptable opacities are around 20-70%, that ii) ranges can be extended by 5% by using an outline, and that iii) ranges shift based on features like pattern and density.
