Measuring the Angular Velocity of a Propeller with Video Camera Using Electronic Rolling Shutter

Table 3

Angular velocity of the multiblade propeller.

Frame number	Center deviation (pixel)	Actual velocity (r/s)	Measured velocity (r/s)	Relative error of velocity (%)
1	(3, 3)	29.06	28.25	2.8
2	(2, 8)	29.18	29.34	0.5
3	(7, −4)	28.86	29.32	1.6
4	(5, −2)	28.90	28.97	0.2
5	(1, −1)	57.77	56.67	1.9
6	(−2, 6)	58.26	57.93	0.6
7	(−5, 7)	58.10	56.54	2.7
8	(−2, 3)	58.14	56.60	2.6
9	(1, 5)	75.28	74.12	1.5
10	(6, 3)	75.45	73.65	2.4
11	(10, 2)	75.55	73.80	2.3
12	(3, 4)	75.89	73.56	3.1
13	(−2, 3)	109.50	107.10	2.2
14	(−1, 0)	109.45	105.48	3.6
15	(−8, 3)	109.12	104.04	4.7
16	(3, −5)	108.93	103.86	4.7