不同粒子浓度情况下体积重构技术的比较

In this study, four different volume reconstruction techniques for tomographic PIV are investigated using synthetic and experimental data at different particle densities. Multiplied line of sight (MLOS) and Minimum line of sight (MinLOS) represent methods that need significant less computation time than the standard MART reconstruction. Motion Tracking Enhancement (MTE) on the other hand needs significant more computational time, but has the potential to achieve more accurate results especially at higher seeding densities. The presented results confirm that the fast MLOS and MinLOS reconstruction are applicable at low seeding densities of about 0.02 particles per pixel (ppp), and achieve a lower accuracy than standard MART. MTE on the other hand is proven to be applicable in the broadest density range from 0.01 ppp up to 0.2 ppp. Imager sCMOS PIV相机 用于粒子成像测速(PIV)的荧光示踪粒子 体视层析粒子成像测速系统(Tomo-PIV)