Peterson Kevin, Regaard Boris, Heinemann Stefan, Sick Volker
The University of Michigan, Department of Mechanical Engineering, 1231 Beal Avenue, Ann Arbor, MI 48109, USA.
Opt Express. 2012 Apr 9;20(8):9031-7. doi: 10.1364/OE.20.009031.
This paper introduces single-camera, three-dimensional particle tracking velocimetry (SC3D-PTV), an image-based, single-camera technique for measuring 3-component, volumetric velocity fields in environments with limited optical access, in particular, optically accessible internal combustion engines. The optical components used for SC3D-PTV are similar to those used for two-camera stereoscopic-µPIV, but are adapted to project two simultaneous images onto a single image sensor. A novel PTV algorithm relying on the similarity of the particle images corresponding to a single, physical particle produces 3-component, volumetric velocity fields, rather than the 3-component, planar results obtained with stereoscopic PIV, and without the reconstruction of an instantaneous 3D particle field. The hardware and software used for SC3D-PTV are described, and experimental results are presented.
本文介绍了单相机三维粒子跟踪测速技术（SC3D-PTV），这是一种基于图像的单相机技术，用于在光学通道有限的环境中，特别是在光学可达的内燃机中测量三分量体积速度场。用于SC3D-PTV的光学组件与用于双相机立体微粒子图像测速技术（stereoscopic-µPIV）的组件相似，但经过改进以将两个同步图像投影到单个图像传感器上。一种新颖的粒子跟踪测速算法依靠对应于单个物理粒子的粒子图像的相似性来生成三分量体积速度场，而不是像立体粒子图像测速技术那样得到三分量平面结果，并且无需重建瞬时三维粒子场。文中描述了用于SC3D-PTV的硬件和软件，并给出了实验结果。
