An Automatic Matching Method of Out-of-Order Point Sets for Comparative Analysis of Industrial Measurement Design
A comparative analysis and industrial measurement technology, applied in the field of matching, to achieve good integrity, reduce initial matching errors, and improve operating efficiency
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[0054] Such as figure 1 As shown, the existing design point set Degn(P D1 , P D2,...,P Dm ), and the measurement point set Surv(P S1 , P S2 ,...,P Sn ), m is not necessarily equal to n, and the two point sets are out of order, and the common point set of the two point sets is recorded as P=Degn∩Surv.
[0055] The side length matching strategy is:
[0056] Based on the design point set, the matching is performed by selecting the edges in the measurement point set, and the edges participating in the matching between the design point set and the measurement point set are L AB and L XY , where A and B are L AB The two ends of , X, Y are L XY The two ends of , and record the matching ambiguity ΔE as 3σ, where σ is the modulus sum of the error in measurement and the error in construction or welding, and the value is taken according to experience and calibration of measuring instruments;
[0057] If the length of both sides satisfies the formula
[0058] L XY -2ΔE≤L AB ≤...
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