Image Analysis

这项研究提出了一个重大进展，在确定 用数字图像处理技术对湍流的细节进行了研究， 跟踪技术，以获得完整的瞬时测量 （速度矢量，涡度和应变场）在空间和时间上， 边界层和管道中几种公认的湍流 流动。 空间和时间上的详细矢量速度场数据将 通过逐帧跟踪粒子流标记来获得， 立体电影。 根据这些测量， 字段将被计算。 为了完成这项分析， 必须以合理的自动方式处理数据。 本研究 建议建立所需的数字信息类型， 视觉记录，然后开发必要的软件来提取 以有效的方式提供信息。

This research proposes to make a major advance in determining the details of turbulent flows by using digital image processing and tracking techniques to obtain complete instantaneous measurements (velocity vectors, vorticity, and strain fields) in space and time for several well-established turbulent flows in boundary layers and in pipe flows. Detailed vector velocity field data in both space and time will be obtained by a frame-by-frame tracking of particle flow markers in stereoscopic films. From these measurements, vorticity and strain rate fields will be calculated. To accomplish this analysis, massive amounts of data must be processed in a reasonably automatic way. This research proposes to establish the type of digital information needed from the visual records and then develop the software necessary to extract that information in an efficient manner.