A New Method for Detecting Compensation Hole Parameters of Automobile Brake Master Cylinder Based on Machine Vision

Table 7

Statistical table of 30 compensation hole radius size inspection.

Number of times	Random Hough transform R/pixel	Gradient Hough transform R/pixel	Paper algorithm R/pixel	Number of times	Random Hough transform R/pixel	Gradient Hough transform R/pixel	Paper algorithm R/pixel
1	48.757	48.512	48.021	16	48.923	48.806	48.035
2	48.723	48.736	48.035	17	46.845	47.728	47.984
3	48.536	47.568	47.955	18	48.852	49.216	47.996
4	47.524	49.545	48.032	19	49.668	47.236	48.003
5	48.467	48.636	48.043	20	48.324	47.724	48.002
6	47.326	48.634	47.981	21	47.745	48.448	47.959
7	49.835	47.332	48.042	22	48.448	46.767	47.968
8	47.536	48.869	47.981	23	47.788	48.426	47.984
9	48.665	49.234	48.000	24	47.595	48.373	48.033
10	48.869	46.842	48.021	25	48.495	49.353	48.015
11	49.965	48.765	48.014	26	46.527	47.221	47.986
12	48.845	48.423	47.953	27	48.684	48.545	48.044
13	46.534	47.232	47.982	28	49.755	46.658	47.992
14	47.876	48.154	48.043	29	46.635	46.835	47.951
15	47.769	48.321	47.967	30	46.445	48.815	48.034
				Mean	48.165	48.199	48.002
				Variance	0.986	0.824	0.030