虚拟远海环境的建模与渲染技术

Virtual modeling and rendering technologies of high-seas environment

通过分波幅和分相位的扰动算法,改进了基于线性风浪谱的圆滑波峰现象;结合SNE(Synthetic Natural Environment)的浪级、风级、浪高,以及平均周期等信息,实现了与环境结合的风浪可视化算法;综合心理声学和音乐声学等主观声音学科,提出了风浪波谱参数的修正方案,并实现了实时风浪噪音算法的均衡器特性参数与增益调参;采用基于流动纹理的过程着色方案;并将环境纹理镜像化后合并,然后进行景象的高斯模糊;着色后修饰环境图像噪声,提高了适用于海洋景象模拟的纹素质量;实现了基于SNE综合自然环境信息的实时远海视听一体化系统,验证了视听算法的有效性.

A real-time linear accumulation ocean wave spectrum algorithm was adjusted by disturbing weighted phasic and amplitude factors which meliorated the defective smooth figure of billows and stormy waves. Base on the synthetic natural environment （SNE） information such as stormy level, wind level, equalized wave amplitude, and average cycle, advanced real-time combining environmental influence algorithm was presented. Based on the psychoacoustics and musical acoustics, advanced storm wave parameter adjusting method was proposed, and then real-time sound implementation node was realized using audio equalizer. Runtime shading method for flowing texture was proposed, background texture was appended to original one after mirror-image generation and Gauss blur distortion. Texture graphical quality was modified and image noise was also reduced after this underline processing. A harmonic visual and audio virtual system combing SNE information was realized which testified the feasibility of the advanced storm wave spectrum.