Enhanced illumination of reconstructed dynamic environments using a real-time flame model
Enhanced illumination of reconstructed dynamic environments using a real-time flame model
复制标题
使用实时火焰模型增强重建动态环境的照明
DOI：
--
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
F. Rousselle
中科院分区：
文献类型：
--
作者：
Flavien Bridault;M. Leblond;F. Rousselle
三维计算机重建中的交互式演练的目标是让人们有一种沉浸在不同时期不同地点的感觉。这些演练的真实感不仅是通过详细的 3D 模型实现的，而且还通过有关当时照明方式的正确照明来实现。为了增强巴瓦伊高卢罗马论坛的计算机重建的视觉外观，我们提出了一个模型，可以实时再现蜡烛和油灯产生的简单火焰的形状、动画和照明。使用纳维-斯托克斯方程求解器对粒子骨架进行动画处理来模拟火焰动力学。它的形状是使用这些粒子作为 NURBS 曲面的控制点获得的。真实火焰的光度分布由分光光度计捕获并存储到光度固体中。该纹理用作像素着色器中的球形纹理，以准确计算火焰在任何方向上产生的照明。我们的模型与现有的阴影算法兼容，旨在轻松融入任何文化遗产实时应用程序中。
The goal of interactive walkthroughs in three dimensional computer reconstructions is to give people a sensation of immersion in different sites at different periods. Realism of these walkthroughs is achieved not only with detailed 3D models but also with a correct illumination regarding the means of lighting in those times. Working on the enhancement of the visual appearance of the computer reconstruction of the Gallo-Roman forum of Bavay, we propose a model that reproduces the shape, animation and illumination of simple flames produced by candles and oil lamps in real-time. Flame dynamics is simulated using a Navier-Stokes equation solver animating particle skeletons. Its shape is obtained using those particles as control points of a NURBS surface. The photometric distribution of a real flame is captured by a spectrophotometer and stored into a photometric solid. This one is used as a spherical texture in a pixel shader to compute accurately the illumination produced by the flame in any direction. Our model is compatible with existing shadow algorithms and designed to be easily incorporated in any cultural heritage real-time application.