Technology and Methods for Deferred Synthesis of 4K Stereo Clips for Complex Dynamic Virtual Scenes

Timokhin P. Yu; Mikhaylyuk M. V; Vozhegov E. M.; Panteley K. D.

摘要

We consider the task of capturing the result of a researcher-driven stereo visualization of a complex dynamic virtual scene into a video sequence of stereo pairs (stereo clip) of ultrahigh resolution. An efficient technology of deferred synthesis of stereo clips is proposed. It allows one to create stereo clips without interfering with real-time visualization. The technology includes real-time construction of visualization scenario and offline transformation of the scenario into a stereo clip. Methods for implementing these stages for the task of stereo visualization of the saturation isosurface of displacing fluid are considered. For this purpose, a special file format scr for the visualization scenario is developed on the basis of chunk data structures. This format provides a compact representation of neighboring repeated frames. The scenario file is transformed into a sequence of 4K stereo pairs by means of the offscreen rendering technology of the virtual scene, and stereo pairs are added to the stereo clip using a number of open-source FFmpeg libraries designed for processing digital video content. The generated stereo clip is placed within an MP4 container, and the video compressing standard H.264 is used. The proposed technologies and methods of 4K stereo clip deferred synthesis are implemented in a software designed for visualizing simulation results of the unstable displacement of oil from porous media. Using this software, a 4K stereo clip is created, which illustrates the evolution of the saturation isosurface during the process of unstable oil displacement. Testing confirmed the validity of the solution. The software can be used in virtual laboratories, for designing virtual environment systems and scientific visualization systems, in educational applications etc.

机译：我们考虑捕获复杂动态虚拟场景的研究员驱动立体声可视化结果的任务到超高分辨率的立体对（立体声剪辑）的视频序列中。提出了一种高效的延迟合成立体夹的技术。它允许人们在不干扰实时可视化的情况下创建立体声剪辑。该技术包括实时构建可视化场景和场景的离线转换为立体声剪辑。考虑了用于实现这些阶段的立体声可视化的任务的方法，被考虑为位移流体的饱和异位表面。为此目的，基于块数据结构开发了一种特殊的文件格式 SCR 用于可视化方案。此格式提供了相邻重复帧的紧凑表示。通过虚拟场景的偏离屏幕渲染技术将场景文件转换为4K立体声对的序列，并且使用设计用于处理数字视频内容的数量的开源FFMPEG库将立体对的立体声对添加到立体声剪辑中。所生成的立体剪辑放置在MP4容器内，使用视频压缩标准H.264。所提出的4K立体剪辑延迟合成的技术和方法是在设计用于可视于从多孔介质中可视化油的仿真结果的软件中实现的。使用该软件，创建了4K立体声剪辑，其示出了在不稳定的油位移过程中饱和异位表面的演变。测试确认了解决方案的有效性。该软件可用于虚拟实验室，用于设计教育应用等虚拟环境系统和科学可视化系统。

Technology and Methods for Deferred Synthesis of 4K Stereo Clips for Complex Dynamic Virtual Scenes

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