Hybrid Adaptive Wavelet-Based Optical Flow Algorithm for Background Oriented Schlieren (BOS) Experiments

Table 1

Parameters used to simulate the BOS experiment.

Symbol	Description	Quantity
	Distance from background pattern to flow center	0.3 m
	Distance from flow center to camera	0.3 m
f	Focal length	25 mm
n	Refractive index distribution
R	Radius of flow field	0.1 m
l	Pixel pitch	5 µm
M	Image size	256 ∗ 256
	Dot density	20 dots/32∗32 pix