Automated Localization and Classification of Expressway Pole-Like Road Facilities from Mobile Laser Scanning Data

Table 6

Confusion matrix of PLO classification at Site 2.

	A	B	C	D	E	F	G	H	I	J	Precision (%)
A	23	0	0	0	0	0	0	0	0	0	100.0
B	0	141	0	0	0	0	0	0	0	0	100.0
C	0	3	93	0	0	0	0	0	0	0	96.9
D	0	0	0	11	0	0	0	0	0	1	91.7
E	0	0	0	0	5	0	0	0	0	0	100.0
F	0	0	0	0	0	5	0	0	0	0	100.0
G	0	0	0	0	0	0	4	0	0	0	100.0
H	0	0	0	0	0	0	0	4	0	0	100.0
I	0	0	0	0	0	0	0	2	8	14	33.3
J	0	0	0	0	0	0	0	0	1	4	80.0
Recall (%)	100.0	97.9	100.0	100.0	100.0	100.0	100.0	66.7	88.9	21.1
Overall quality: 294/300 = 98.0%

Legend: A = high-mast lighting; B = lighting pole-2-sided; C = lighting pole-1-sided; D = overhead sign; E = CCTV camera; F = telecommunication tower; G = speed limit pole; H = lighting pole-1-sided (special type); I = small signboard; J = others.