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Table 3 Annotation quality on DH

From: Crowdsourcing BIM-guided collection of construction material library from site photologs

DH G C R NG5
Annotator A 51 33 3 7 5
Annotator B 15 11 0 11 5
Annotator C 362 76 0 43 5
Total 428 120 3 61 5