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Table 4 Data characteristics of all caves in Qiuxia Rockery (numbers in parentheses correspond to the subplots in Fig. 17)

From: Cave feature extraction and classification from rockery point clouds acquired with handheld laser scanners

Phase

Class

Wo

Xiu

Dong

Huan

Count

 

1

3

14

1

Thickness (mm)

Min

37 (a-1)

27 (b-1)

30 (c-7)

80 (d-1)

Max

37 (a-1)

52 (b-3)

250 (c-5)

80 (d-1)

Perimeter (mm)

Min

279 (a-1)

165 (b-1)

98 (c-14)

251 (d-1)

Max

279 (a-1)

350 (b-3)

970 (c-1)

330 (d-1)

Area (mm2)

Min

4947 (a-1)

2416 (b-3)

144 (c-6)

3335 (d-1)

Max

4947 (a-1)

4616 (b-2)

23,820 (c-9)

5968 (d-1)