高动态范围显示的体积渲染

A. Ghosh, Matthew Trentacoste, W. Heidrich
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引用次数: 12

摘要

传统显示器的动态范围限制限制了在体绘制应用程序中可以表示的细节数量。然而,对比度大于50,000:1的高动态范围显示器最近已经开发出来。我们将探讨如何将这些增加的功能用于常见的体绘制算法,如直接体绘制和最大投影绘制。特别是,我们讨论了在显示对比度范围内的强度分布,以及在显示可以产生的强度范围内传递函数到感知线性空间的映射。除了清晰地描绘主要感兴趣的区域外,这使我们能够为空间背景保留几个明显的强度差异步骤。我们还提出了在感知线性空间中通过数据的直方图均衡化来生成阶无关算子的自动传递函数。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Volume rendering for high dynamic range displays
Dynamic range restrictions of conventional displays limit the amount of detail that can be represented in volume rendering applications. However, high dynamic range displays with contrast ratios larger than 50,000 : 1 have recently been developed. We explore how these increased capabilities can be exploited for common volume rendering algorithms such as direct volume rendering and maximum projection rendering. In particular, we discuss distribution of intensities across the range of the display contrast and a mapping of the transfer function to a perceptually linear space over the range of intensities that the display can produce. This allows us to reserve several just noticeable difference steps of intensities for spatial context apart from clearly depicting the main regions of interest. We also propose generating automatic transfer functions for order independent operators through histogram-equalization of data in perceptually linear space.
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