【摘要】 基于影象模拟在海洋学上应用的初步探讨 ,对移行点源兴波中的Kelvin船波这种较为简单的海洋现象 ,用影象模拟的方法 ,即结合数值方法、高度真实感图形绘制、计算机动画仿真等技术 ,把平面移行点源兴波过程用高度真实感的图形显示在荧屏上 ,并实现运动过程的显示 ;其间通过计算原始数据、生成图象、实现动画的步骤 ,解决了数值计算、Z缓冲区数据库方法、光线追踪、动画制作等方面的问题 ,在较低的计算机硬件要求下得到了较好的模拟结果。从所得影象上可直观观察移行点源兴波的横波、散波、尖顶角及其运动、叠加等特征 ,并可发现对所选点源其兴波有不对称的特点。结果表明 ,海洋波动过程的影象模拟可行且有效。更多还原

【Abstract】 For the relatively simple ocean phenomenon of Kelvin ship waves in moving point source generated waves, by the method of video simulation, i.e. combining the technique of numerical method, highly realistic graph drawing and computer animation emulation, this paper intends to conjoin closely oceanography and computer graphics and animation, as a new form of Visualization of Scientific Calculation, and to display plane moving point source generated waves process on the screen with highly realistic graph and animation. By calculating original data, generating images and making animation, the problems of numerical calculation, Z-buffer database method, ray tracing, computer animation, etc. are solved. Satisfied results are obtained under low computer hardware requirment. From the results of video simulation it is easy to perceive directly the features of transverse waves, lateral waves, cusp angle and their movement, supraposition, etc., and the asymmetry of this kind of point source generated waves is found. The result indicates that video simulation of ocean wave processes is feasible and effective.更多还原