Complex Texture Contour Feature Extraction of Cracks in Timber Structures of Ancient Architecture Based on YOLO Algorithm

Table 4

YOLO v3 training results.

Epoch	Gpu_men	Box	Obj	Cls	Total	Labels	Img_size	Precision	Recall	mAP@0.5
0/449	4.06 G	0.1105	0.0411	0	0.1516	82	640	0.0071	0.0318	0.0006
1/449	2.92 G	0.1005	0.0489	0	0.1495	27	640	0.0230	0.0260	0.0019
2/449	2.92 G	0.0926	0.0472	0	0.1397	78	640	0.0740	0.0679	0.0156
3/449	2.93 G	0.0861	0.0484	0	0.1345	79	640	0.1690	0.1811	0.0769
4/449	2.93 G	0.0845	0.0464	0	0.1309	76	640	0.1969	0.2161	0.1016
445/449	2.93 G	0.0269	0.0218	0	0.0487	106	640	0.9198	0.9198	0.9559
446/449	2.93 G	0.0261	0.0209	0	0.0470	33	640	0.9224	0.9156	0.9549
447/449	2.93 G	0.0261	0.0206	0	0.0468	74	640	0.9145	0.9239	0.9557
448/449	2.93 G	0.0267	0.0224	0	0.0491	75	640	0.9218	0.9223	0.9565
449/449	2.93 G	0.0261	0.0213	0	0.0474	84	640	0.9253	0.9164	0.9554