Recreating early Islamic glass lamp lighting
Recreating early Islamic glass lamp lighting
复制标题
再现早期伊斯兰玻璃灯照明
DOI：
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复制
发表时间：
2009
期刊：
影响因子：
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通讯作者：
N. Badler
中科院分区：
文献类型：
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作者：
Joseph T. Kider;Rebecca L. Fletcher;Nancy Xiaonan Yu;R. Holod;A. Chalmers;N. Badler
早期的伊斯兰光源并不是简单的、静态的、统一的点，灯具本身往往是玻璃、水、燃料和火焰的组合。各种基于物理的渲染器（如Radiance）被广泛用于模拟古代建筑场景;但由于微妙的照明效果，它们很少捕捉环境的真实氛围。具体而言，这些渲染器通常无法正确地对玻璃固定装置、水位和燃料源产生的复杂焦散进行建模。虽然西班牙科尔多瓦清真寺世纪到10世纪的原始装置没有幸存下来，但我们应用了从早期和当代遗址和文物中收集的信息，包括拜占庭的那些，假设它是由单一的罐子灯照亮的，或者是由多角形灯支撑的，这些灯投射出独特的向下腐蚀性照明模式，有助于人们导航和阅读。为了重新合成这种照明，我们收集了实验考古数据，并调查和验证了各种水位和玻璃灯具形状（可能在早期伊斯兰时代使用）如何改变整体光模式和向下焦散。在本文中，我们提出了一种称为焦散锥的技术，这是一种新颖的数据驱动方法，可以“塑造”从灯发出的光，以更好地重建向下的照明，而无需求助于计算昂贵的光子映射渲染器。我们通过对科尔多瓦清真寺的渲染展示了我们的方法如何通过提供更真实的早期伊斯兰玻璃的视觉模拟而使考古学家和建筑历史学家受益匪浅灯照明。
Early Islamic light sources are not simple, static, uniform points, and the fixtures themselves are often combinations of glass, water, fuel and flame. Various physically based renderers such as Radiance are widely used for modeling ancient architectural scenes; however they rarely capture the true ambiance of the environment due to subtle lighting effects. Specifically, these renderers often fail to correctly model complex caustics produced by glass fixtures, water level, and fuel sources. While the original fixtures of the 8th through 10th century Mosque of Cordoba in Spain have not survived, we have applied information gathered from earlier and contemporary sites and artifacts, including those from Byzantium, to assume that it was illuminated by either single jar lamps or supported by polycandela that cast unique downward caustic lighting patterns which helped individuals to navigate and to read. To re-synthesize such lighting, we gathered experimental archaeological data and investigated and validated how various water levels and glass fixture shapes, likely used during early Islamic times, changed the overall light patterns and downward caustics. In this paper, we propose a technique called Caustic Cones, a novel data-driven method to "shape" the light emanating from the lamps to better recreate the downward lighting without resorting to computationally expensive photon mapping renderers.Additionally, we demonstrate on a rendering of the Mosque of Cordoba how our approach greatly benefits archaeologists and architectural historians by providing a more authentic visual simulation of early Islamic glass lamp lighting.
高动态范围展示来自塞浦路斯的真实照明拜占庭艺术
DOI：
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发表时间：
2007
期刊：
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影响因子：
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作者：
E Zányi
通讯作者：
E Zányi