Three-Dimensional Reconstruction of Welding Pool Surface by Binocular Vision

Chinese Journal of Mechanical Engineering

Table 4 Comparison between the tracer particle and the matching point pairs

Image group	Tracer particles ( mm)	Matching point pair 1 (mm)	Matching point pair 2 (mm)	Matching point pair 3 (mm)	Maximum abs (error) (mm)	Maximum relative error (%)
1	−1.31727	−1.36893	−1.33676	−1.33862	0.05136	3.92
2	−1.32219	−1.29371	−1.33483	−1.37148	0.05199	3.78
3	−1.19575	−1.23198	−1.23604	−1.12156	0.06419	5.37
4	−1.26499	−1.28316	−1.32741	−1.25829	0.06243	4.93
5	−1.17624	−1.16843	−1.21358	−1.16923	0.03736	3.17
6	−1.42836	−1.47268	−1.43864	−1.43269	0.04432	3.10
7	−1.27823	−1.29906	−1.24084	−1.24821	0.03748	2.93
8	−1.36529	−1.32842	−1.31868	−1.35937	0.04863	3.59