Enhancing Railway Maintenance Safety Using Open-Source Computer Vision

Table 2

Verification of recognizing and detecting algorithm railway signs.

Classification	Railway sign	True positive	False negative	False positive	Precision	Recall
0∼90 km/h	95	84	3	8	0.96	0.91
0∼50 km/h	40	39	—	1	0.98	1.0
51∼70 km/h	35	31	1	3	0.91	0.97
71∼90 km/h	20	14	2	4	0.78	0.86