Predictive lighting and perception in archaeological representations
Predictive lighting and perception in archaeological representations
复制标题
考古表现中的预测照明和感知
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
Duncan Brown
中科院分区：
文献类型：
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作者：
K. Devlin;A. Chalmers;Duncan Brown
目前使用三维计算机图形来表示考古遗址的趋势是有限的，因为它们的真实感水平无法得到保证。生成的图像可能看起来很逼真，但通常没有人尝试验证它们的准确性。为了让考古学家受益于计算机生成的表示并以有意义的方式使用它们，虚拟的过去环境必须不仅仅是漂亮的图片-它们必须准确地模拟正在建模的遗址的所有物理证据。
重建的一个经常被忽视的方面是照明。标准的三维建模包不允许精确控制照明值，因此，许多模拟显示考古遗址处于不适当或错误的照明条件下，例如现在的明亮、稳定的光。实验考古和逼真的照明模拟使我们能够重现考古遗址的原始照明，并向那些建造和使用它的人展示它可能是什么样子。预测照明还开辟了探索过去环境可能被感知的新途径，使我们能够在计算机上以安全、非侵入性的方式调查关于建筑、艺术和文物的新假设。本文概述了虚拟遗产中对感知现实主义的需求，并审查了预测照明技术的应用增强了考古解释的案例研究。
The current trend for employing three-dimensional computer graphics to represent archaeological sites is limited because their level of realism cannot be guaranteed. The images that are generated may look realistic, but often no attempt has been made to validate their accuracy. In order for the archaeologist to benefit from computer-generated representations and use them in a meaningful way, virtual past environments must be more than pretty pictures— they must accurately simulate all the physical evidence for the site being modelled.
An often neglected facet of reconstructions is the lighting. Standard three-dimensional modelling packages do not allow precise control over lighting values, and as a result, many simulations show the archaeological site under inappropriate or false lighting conditions such as the bright, steady light of the present. Experimental archaeology and realistic lighting simulation allow us to recreate the original lighting of an archaeological site and show it how it might have looked to those who built and used it. Predictive lighting also opens up new avenues of exploring how past environments may have been perceived, allowing us to investigate on a computer new hypotheses about architecture, art, and artefacts in a safe, noninvasive manner. This paper outlines the need for perceptual realism in virtual heritage, and examines case studies where the application of predictive lighting techniques have enhanced archaeological interpretation.