Sea surface simulation for testing of multiband imaging sensors
Sea surface simulation for testing of multiband imaging sensors
复制标题
用于测试多波段成像传感器的海面模拟
DOI：
10.1117/12.488472
复制
发表时间：
2003
影响因子：
--
通讯作者：
E. Repasi
中科院分区：
文献类型：
--
作者：
F. Schwenger;E. Repasi
目前的系统在可见光或红外波段模拟海面。本文提出了一种基于物理的三维海面模拟方法，用于计算多波段相机的图像。动态海面，由光滑的风驱动的重力波，生成的时间相关的统计模型。此外，波涛汹涌的波浪建模，以提高波涛汹涌的大海的真实感。海的外观在可见光和热波段的建模。相对于反射的天空辐射率和发射的海面辐射率来计算IR波段中的海面辐射率。给出了可见光和红外波段的太阳闪烁模拟。偏振效果被纳入，以提高物理现实主义。作为应用的一个例子，显示了具有浮动前景对象的海面的实时动画。模拟得到的海面图像与真实的图像吻合较好。
Present systems simulate sea surfaces either in the visible or in the IR band. A physics based 3D simulation of sea surfaces for the calculation of images for multiband cameras is presented here. Dynamic sea surfaces, composed of smooth wind-driven gravity waves, are generated by means of time dependent statistical models. In addition, choppy waves are modeled to improve the realism of the rough sea. The appearance of the sea in the visible and thermal bands is modeled. Sea surface radiance in the IR band is calculated with respect to the reflected sky radiance and the emitted sea surface radiance. Sun glint simulations in the visible and IR are presented. Polarization effects were incorporated to enhance the physical realism. As an example for an application a real-time animation of a sea surface with floating foreground objects is shown. The simulated images of the sea surface are in good accordance with real images.