152
Appendix B
B.2 Regularity of Bubble Pattern
To eliminate the shape factor of bubbles, each recorded frame is converted into a
binary image with substituting captured bubbles with circles of an equivalent diameter. Besides, the intensity function M pol (i, d) is computed as the arithmetic mean
of normalised autocorrelation function obtained for each frame:
M pol (i, d) =
1
N
t=N
t=1
1 − ρ pol,t (i, d)
(B.7)
Appendix B
B.2 Regularity of Bubble Pattern
To eliminate the shape factor of bubbles, each recorded frame is converted into a
binary image with substituting captured bubbles with circles of an equivalent diameter. Besides, the intensity function M pol (i, d) is computed as the arithmetic mean
of normalised autocorrelation function obtained for each frame:
M pol (i, d) =
1
N
t=N
t=1
1 − ρ pol,t (i, d)
(B.7)